We have flown the Gemini Version 2 for over 4 Hrs! check out the video: th-cam.com/video/auOC8a_zdg8/w-d-xo.html&google_comment_id=z124jbmrqyeujzo0t23gytgxir2ihpuyq04&google_view_type
Spike, I have just received the Gemini v2 plans thank you very much. the new plans are fantastic, so well described, plenty of photos in the instructions. This is value for money and with the kit that Wayne provides top Quality all-together. Thank you so much, great service All the best to you Guys Allan
OOOh-AAAh! Very nice Spike. The feature set is looking good. This looks like a great refinement of the #1. The wing pods could drop a smoke marker or a rubber chicken!
Very happy to see that work continues on improving this platform. Impressive flight times, I see quite a few useful applications utilizing this design. Redesign of motor pod was a logical approach. Subbed and looking forward to seeing your progress.
Rubber chicken attachment! I need one! hahaha It's great to see your completed Gemini V2 in the air! I can attest to the fact that they do fly very stable! :)
I have a friend who is a retired airbus flight instructor, and he's obsessed with rubber chickens, so had to mention it. glad you liked it. I will include your air brake suggestions on the website soon, for other people to consider. thanks for the input!
So when dropping the payload, you lose the doors? Unless you go and find the little things. Also can long range fpv still take place if trees get in between you and the aircraft?
I was thinking the same thing, but the door looks pretty simple, so making lots of spares sounds like a better plan than having the drag of a hinged door hanging loose. As for what to drop in a SAR scenario, I'd think a smoke canister in one pod and a small aerial flare in the other, along with maybe a signal whistle and/or air horn would be the most helpful, letting the victim have another method to guide searchers in if the plane can't keep circling overhead long enough for them to get there.
"Help I'm stranded! Here's my position." "It will take us a couple hours to reach your location on land so we'll send an RC plane and drop a rubber chicken" "What the hell is that gonna do?" "I dunno, provide comfort?"
+ FPVREVIEWS Great work , I love it , always keep upgrading , going to fly it soon. I like it so much and already get the plan and the kit from wayne. I still have some Questions : 1- Could you suggest another motor ? or Guide me for some important specification to choose ? now I just have O.S Motors (OMA-5020-490) and ( OMA-5025-375 ) which is 490Kv and 375 Kv 2- I have Dualsky ESC 80A dose there any problem in using it instead of buying new castle PHOENIX EDGE 50 A ? Regards .
A few minor thoughts; first of all, I have to say I very much preferred the look of the wood finish on the V1. I know, I know, its just a choice, but it looked so awesome. The white cover on your V2 hides all the craftsmanship and makes it look like cheap plastic. Secondly, why would you put both rx antenna's in the exact same orientation? Put them at a a 45-90 degree angle, so you'll have better chance of reception while banking Lastly, the dropable payload under the wings, did I see it right that you lose the hatch on each drop? There is room for improvement there I think. Now that I got that off my chest; what a fantastic plane!
there are two control systems, one ezuhf with diversity, and the second antenna for it is not visible, because it's hidden in the fuselage. it's in a horizontal position to best receive at very ugh altitudes. the second one you see is the antenna for the dragon link. on a n airframe like this you tend to run out of control channels no matter how many of them you use. you also have more functionality than one pilot can handle. The white monokote is more stable in the sunlight, and does not show the accumulation of condensed moisture inside the airframe. being cooler, there will be less of it too. it was a bit of an issue with the prototype covered in clear. i no longer need to inspect the airframe each flight either, as the v-2 is much more robust. I looked the look too, but this is so much more practical. you do lose the hatch, but i was just trying to show one application for the droppable payload. the hatches can be made out of a piece of cardboard, and cut out with scissors, so no bio loss there, or is it really littering if it biodegrades within a couple of weeks. anyway, hope that helps explain things. cheers
I just purchased your Plan and shortly the kit from your mate Wayne, The plans I receive are from the original, not version 2, can you rectify that if possible All the best, I just can't wait to start building such a great plane Allan
Horacio Stjeward once i committed to a twin, there are lots of benefits, and a lot of bad habits of single engine planes go away. p effect, torque roll, gyroscopic precession, thrust height, thrust angle problems, and vibration problems go away because props are in clean air, and the vibration counters itself internal to the wing spar,and never transfers into the fuselage,where the sensors are located. etc, etc..
Hi i just looked at video on Gemini and would like to ask if there are instructions on how to put it together. For example cut out of wood and connections.
+Coolwater Hubby The plans come with build instructions for the laser cut kit assembly, and there is a build video on this channel for the scratch build version.
Is there a way in which one can buy a Plug and Fly version from you? I live in the United States... I have seen videos of you testing planes that you build for some clients. How does that work? I'm very interested on this plane. 👍👍👍
blueflamingo1 without modification of the airframe, a 17 inch prop will physically fit. if you flip the motor mount brackets, a 21 inch prop will fit. it's just a few bolts to swap. the recommended prop is a 13 x8.
blueflamingo1 i have tried runnig less pitch, and it was not as good. what might work better would be a larger diameter, even more pitch, and lower rpm/KV. if you try anything, i would be interested to know the results. the lower pitch props work well on multi rotors at near zero airspeed, but for planes, a bit higher pitch usually works better. the 15 inch prop will fit, though. trying props is cheap at least.
Interesting, I never would have suspected that a large diameter but smaller pitch would perform worse. How much thrust are you getting on your motors (roughly)? I was thinking Cobra 2820 840kv on 15x6. This would give me around 4.5kg thrust total. I don't intend on carrying a large payload, instead just a very stable AP/FPV platform. Do you think this would be enough thrust? If I go ahead with this project, I will keep you informed on how the motors perform.
blueflamingo1 the difference is relative to airspeed. at zero airspeed, a prop with large diameter and less pitch. ike a multi rotor prop is the best, and produces the best static thrust. static thrust is no longer relevant, as the airplane will not be static when the motor is running,a nd the prop is working. have a look at the props on a turboprop commuter plane in flight. lots of pitch, and they use constant speed props too. but they adjust for a lot of pitch in cruise flight. i have not tried much larger props on gemini, however,a nd would be interested to know. thanks.
questions: 1 does it work on high humidity or rain? 2 if one engine fails, the remaining, can bring the plane home? 2.1 there is one batt for both engines? so if one fails, the other can use the remaining power?.. 3 is it possible to glide silently, if needed?
domnuspike humidity, no problem, in fact we did our 4 hr +endurance flight in high humidity. rain, don't know, it's a wood plane, probably not the greatest idea to intentionally fly in the rain. if i did, it would seal the gaps in monokote with tape first. one large battery pack. lots of cells, so if a cell fails, no problem. with modern cells, that should not be much of problem , anyway. motors only running at 80% pf their max rating for continuous, so a motor failure is unlikely. we did experience a motor failure on our prototype, at full power in a climb, and we were able to maintain control, without problem. it just pulled to one side a bit. you can go back to our channel to watch the video. we happened to have a camera looking at the motor when it failed, and you can see the smoke roll out from the cowling. we have upgraded the motors since then, and also, the new style motor mounts are heat sinks. it glides very well, we recently glided from altitude for 40 minutes straight. i set props to freewheel in glide to provide some aerodynamic braking actually. check out our other videos, and the website for more info.
Yes, it's possible. however, the stock thrust is more than sufficient to carry a large external payload and have a good sustained rate of climb. The plane climbs primarily due to the lift, not so much the thrust. The motors just have to make enough thrust to maintain a climb airspeed, and a small angle of climb, and the wing does the rest. It's quite different from most sport aircraft.
Wow nice plane I wish I have that much clear air space but we have restrictions and we have to respect that orders so for now I just fly at eye sight altitude but nice plane.
juan sanchez You have to look at the reason that the laws are made, many new technologies are outlawed because of public fear that has its base in ignorance, and fanaticism. governments are also scared of the technology, and tend to make blanket rules, not for safety, but out of fear of losing their power. The benefits for the future, are a cleaner planet, and better agriculture production volume/quality, among saving lives, and providing super cheap access to space. The governments will eventually realize the reality of it, and it will become mainstream, and common. remember, in many countries, cell phones, radios, internet, and television broadcast were illegal, but we now have all of these technologies on our phones. The countries that choose to regulate these technologies at this time will not be any safer, they will criminalize a sector of their most productive population, and will get a very late start with the largest growing industry in the world. it is very sad indeed. all of this has to be taken into account. just be safe, and learn what you need to do so. best wishes, my friend.
yes the reason many guys broke air space with drums at ny city sadly now we all pay for the new rules. I love this hobby but now I have to check first where I fly by the way have drums and gliders..
FPVREVIEWS The govt knows these things now. However they do not want the average citizen to have these things! They are reserved for the ruling powers in the administration who spits on the constitution and defies congress and writes his own "presidential" bans and disallowances. This is the president who drone strikes his enemies after all.
Gyula Szabó Gemini V2 (as slightly modified by Tom and Dave) is available in a variety of stages of completion. They range from Assembled Fuselage, Wings and tail sections to complete with FPV and PixHawk autopilot systems. You can contact Tom at teimages@sbcglobal.net for more details. Prices start at $1,500 USD.
Hi, I recently got the plans for the Gemini and have a few questions: 1.It is possible to use 2x 500mm tube rather than 1x 1000mm tube in the centre wing section, I can get 2 x 500mm tube for a 1/5 of the price than 1 x 1000mm tube. 2. The plan package on drop box came with sheets 2,3,4,5 of the plans, but not page 1, is this normal? 3. I have lots of ply available to use, but not much balsa, would it be ok to use ply where it says use balsa (it will be the correct thickness)? I still intend to use balsa for the square and circular dowel sections. Thanks for the great plans, can't wait to get building this machine!
DroneDuo use the link below for the purchase of the carbon fiber tube, it should not be very expensive. it really needs the 1 meter long section, unless you have a way to join the two 500mm sections without losing strength. you could join them with an aluminum plug, but you would have to have it machined, then use small screws to secure it? One piece is best because it can be slid, out and removed for transport. page 1 is now called the spec sheet, it has been re-named, this is normal. it's ok to substitute lite-ply for many parts, just watch the overall weight. the design is tolerant to weight, but the payload, duration will be reduced slightly. in most cases, keep the thickness. Let me know if you have any other questions. my direct email is fpvreviews@gmail.com best, spike www.ebay.com/itm/OD-25-mm-ID-23-mm-x-1000mm-1m-3k-Carbon-Fiber-tube-Tubing-pipe-shaft-/141394052252?pt=LH_DefaultDomain_0&hash=item20ebbe049c
Thank you for the link, doesn't seem like a bad price now. Do you have a source for the 7x1.2mm carbon strips? I can only find 6x1mm at the moment. Thanks
+philkiller ny i don't use high resolution cameras for the FPV feed, as they have high latency, i use a readymaderc 700tvl fpv cams for the video feed, and carry 2 go pro 2's, one go pro 3, and one mobius. they all work well, however, there are much better cameras now available.
+Austin Blair the standard size DSLR is probably too big, i would guess, but you could always create a bulge in the aft fuselage to fit it, or scale the plane up slightly.
This is fantastic. Great to see the increase in capacity from V1. Shame to submit to practicality and simplicity of design by ditching the excellent cooling design from V2. Understandable though. What is the scope for solar power, given the wing surface area available. Could push you past 12km. Very impressed viewer from Australia, will look to get onto one in the near term.
it could go well beyond 12 km, just have not wanted too until i get a reliable autopilot. 120km distance linear in one flight, while carrying a payload. by changing the airfoil, i have retained the performance. will be doing some demo flights soon to push the envelope for endurance. cheers!
+Dennis Lobos Thanks for your inquiry. there are options, depending how much of the wood you are willing to cut, and what you want laser cut. send an email to flyingsquirrelmodels@gmail.com, and Wayne will be happy to send you the info package with pricing. The laser cut kit options ship from Canada.
Had to watch a video to understand what you were talking about. Heh. Might not be a bad idea. Easier said than done for sure. Really don't know all the options out there to comment further.
+Joe DeJohn the overall challenge of integrating retracts is fairly simple, in that most aircraft that have them either have very complex actuators, or are a low wing configuration, making the retracts simple to integrate. you're right, though, it would be cool. and reduce drag, etc.
I wonder if you made a hinge with a spring that would straighten the posts. A small servo with gearing would collapse the hinge(retract). The posts are partly a stiff spring for shock absorbtion. Crude.
Can this aircraft fly single engine in case engine lost? With full payload what are realistic endurance at 7 thousand feet MSL field elevation and climbing to a cruise altitude of 8 thousand feet MSL?
+svsoftair I have not flown the Gemini V-2 on one motor, however, i have flown the prototype, (very similar) on one motor, and it pulled to one side a bit, but was very controllable. it was at max power at the time of the failure. i expect that a motor failure in itself would not be a problem. i may simulate a motor failure, by making a way to shut off the signal to the esc in flight, and do some testing, when i set the chance. it's very unlikely that a motor would fail in flight, if the motors and esc's are not overloaded. about 75-80% of max is recommended for continuous operation at full power. and the wiring has to be large enough as well. at that altitude, i don't think the endurance would be much different, if at all. with an air breathing engine, yes, but with the electric power, i don't think there will be a big difference. perhaps none. if there is any, an adjustment to the prop diameter or pitch would compensate. I have flown it up to 4008 meters, and it climbed just fine, at 30 amps out of 80.
+grinchyface It's made from Balsa, aircraft grade lite ply, and carbon fiber tube spar, and pultruded strips. The plans are PDF, but if you want it laser cut, the kit from Flying Squirrel Models is a great value, it's about the same price as the wood.
Thanks sir! I considered buying a kit, but as this would be my first balsa build I imagine I'd break or mar half the parts at least once. I purchased the plan last night- is there any chance for an extra fee I can get .svg .plt or another vector format that your laser guy might be using?
+grinchyface Thanks for your purchase! The laser cut files were created by Flying Squirrel Models for their own use in the manufacturing of the kit, so they re not available, however, they have priced to the kit in such a way, that it is cost effective when compared to purchasing the raw materials. I recently did a custom build from the kit, and it was excellent. Sorry I can't help with the specific request. Best, Spike
Just had a chance to glance through the files, am I correct in saying these are just assembly instruction and don't actually contain individual part dimensions or sketches?
+Jorge Tortosa I'm afraid that would be quite impractical. We did build a smaller uav a while back for yacht photography, called Atlantis. it had 1.5 meter span, and 50 minutes endurance. single boom pusher. it flew very well, but applications are limited. we find it better to spend the extra weight required for waterproofing simply to increase airframe performance, even when flying over water. there would be a very special set of circumstances where the waterproofing solution would be good, but for now we are concentrating on land based aircraft which can be flown over water.
i like your video. i am making a UAV to track endangered species of Dogs in Africa ( African painted dogs) in Zimbabwe as a part of school project. i no nothing about FPV and how they work. we made a aircraft with wings and everything and we need one FPV. can you help me to know about FPV and how can i get cheap good one and easy to install ? thanks
great thank you, see... since i am doing different assemblies to make this UAV fly, i am trying to get something quick.. is there a product out there you recommend that is kind of install, plug and go ? cheap and reliable thank you again for your quick replay.
+daniel perkins Telefly OSD that came with the tracker. you don't have to use it for the tracking feature, you can piggy back another osd if you prefer. but i like it.
The airframe can be built for 1000-1300 US depending on kit version, or scratch built version, and choice of propulsion. not including battery, control system, or fpv equipment. It's more than the foamies, but low cost when you compare it to other UAV's with similar capabilities.
I have to admit, My situation forces me to buy Chines, but when I see someone like you GUYS Work hard to produce something so beautifull and well thout off, and then a Chiness guy comes along and just start producing cheap, Just because the so called Polotishens have solled out to America's enemy, Brakes my hart. Anyways Thank you for sharing, and wish you the Best of LUCK...:)
yes, and you can also murder people with a car or a fork. Much more likely to succeed with the last two things... cars and forks cannot monitor crops or count wild animals BTW
@@fatherlandchild2780Don't wait until it's a threat. When someone approaches you about something like that, notify the Appropriate Authorities, so they can investigate the person before they are able to acquire the equipment, ability to do such a horrible thing, just like any other sinister plot. Where are you located anyway?
Depends on how little battery you are willing to carry. about 7 lbs would be max, and still be able to fly for at least 30 minutes. at the recommended max gross weight. if you overload the plane, and only fly for a few minutes on small batteries, probably could carry more than 10 lbs. not a great idea, but would do it. if you want to lift a lot of weight, a 16 ft telecaster would lift more. gas engine.
We have flown the Gemini Version 2 for over 4 Hrs! check out the video:
th-cam.com/video/auOC8a_zdg8/w-d-xo.html&google_comment_id=z124jbmrqyeujzo0t23gytgxir2ihpuyq04&google_view_type
true, but we can drop mavics out of the rear cargo bay!
Spike, I have just received the Gemini v2 plans thank you very much.
the new plans are fantastic, so well described, plenty of photos in the instructions.
This is value for money and with the kit that Wayne provides top Quality all-together.
Thank you so much, great service
All the best to you Guys
Allan
Thanks Alan, let us know if you have any questions!
It is not just an rc plane, but.. this is a masterpiece. I appreciate it 👍
Welcome back!
Definitely a setup for FPV champs :O
Ton of capabilities with this airplane!
Thanks for sharing and have a great weekend
It's here!!! This is on my bucket list. A must have. Such an amazing UAV platform.
Best UAV plane I've seen in a long time.
Wow! That is the best looking FPV-plane I've ever seen! Amazing craftmansship!
Very well done. I can't imagine how long this took to design and build. Great vid. thanks.
how long this took to design and build - 30 minutes
Man, that looks like fun. I can't wait to get into this hobby.
I'm curious... What's it's endurance time??
4+hrs is easily possible
Great looking new one, congratulations on another fine ship.
OOOh-AAAh! Very nice Spike. The feature set is looking good. This looks like a great refinement of the #1. The wing pods could drop a smoke marker or a rubber chicken!
Very happy to see that work continues on improving this platform. Impressive flight times, I see quite a few useful applications utilizing this design. Redesign of motor pod was a logical approach. Subbed and looking forward to seeing your progress.
Great work spike! Really enjoyed seeing it...
Congratulations Spike!
Thanks! Looks like you have been riding your motorcycle lately.(Your channel) Would be good to see you again!
Rubber chicken attachment! I need one! hahaha It's great to see your completed Gemini V2 in the air! I can attest to the fact that they do fly very stable! :)
I have a friend who is a retired airbus flight instructor, and he's obsessed with rubber chickens, so had to mention it. glad you liked it. I will include your air brake suggestions on the website soon, for other people to consider. thanks for the input!
So when dropping the payload, you lose the doors? Unless you go and find the little things. Also can long range fpv still take place if trees get in between you and the aircraft?
I was thinking the same thing, but the door looks pretty simple, so making lots of spares sounds like a better plan than having the drag of a hinged door hanging loose.
As for what to drop in a SAR scenario, I'd think a smoke canister in one pod and a small aerial flare in the other, along with maybe a signal whistle and/or air horn would be the most helpful, letting the victim have another method to guide searchers in if the plane can't keep circling overhead long enough for them to get there.
"Help I'm stranded! Here's my position."
"It will take us a couple hours to reach your location on land so we'll send an RC plane and drop a rubber chicken"
"What the hell is that gonna do?"
"I dunno, provide comfort?"
Finally somebody gets it!
how about a com device and a programmed gps .
OR OR OR...First aid/survival kit with food, water, and medical supplies.
"squeeze the rubber chicken so that we can hear where you are - it's more fun than just blowing a whistle!"
Top notch - I love it. I'm gonna go this route.
+ FPVREVIEWS
Great work , I love it , always keep upgrading , going to fly it soon.
I like it so much and already get the plan and the kit from wayne.
I still have some Questions :
1- Could you suggest another motor ? or Guide me for some important specification to choose ?
now I just have O.S Motors (OMA-5020-490) and ( OMA-5025-375 ) which is 490Kv and 375 Kv
2- I have Dualsky ESC 80A dose there any problem in using it instead of buying new castle PHOENIX EDGE 50 A ?
Regards .
Spike; Great Video! When should e mention our ARF and RTF Geminis?
GOD I LOVE THIS CHANNEL - THESE GUYS ARE THE BEST!!!! BEARY NICE
very nice plane. and a very nice landing
Just awesome bit would really like to know how effivicient this beast is :)
This looks pretty awesome. Whats the ballpark on total cost for a plane such as this?
Beautiful plane! Fly it (past LOS and FPV) while you can!
A few minor thoughts; first of all, I have to say I very much preferred the look of the wood finish on the V1. I know, I know, its just a choice, but it looked so awesome. The white cover on your V2 hides all the craftsmanship and makes it look like cheap plastic.
Secondly, why would you put both rx antenna's in the exact same orientation? Put them at a a 45-90 degree angle, so you'll have better chance of reception while banking
Lastly, the dropable payload under the wings, did I see it right that you lose the hatch on each drop? There is room for improvement there I think.
Now that I got that off my chest; what a fantastic plane!
there are two control systems, one ezuhf with diversity, and the second antenna for it is not visible, because it's hidden in the fuselage. it's in a horizontal position to best receive at very ugh altitudes. the second one you see is the antenna for the dragon link. on a n airframe like this you tend to run out of control channels no matter how many of them you use. you also have more functionality than one pilot can handle.
The white monokote is more stable in the sunlight, and does not show the accumulation of condensed moisture inside the airframe. being cooler, there will be less of it too. it was a bit of an issue with the prototype covered in clear. i no longer need to inspect the airframe each flight either, as the v-2 is much more robust.
I looked the look too, but this is so much more practical.
you do lose the hatch, but i was just trying to show one application for the droppable payload. the hatches can be made out of a piece of cardboard, and cut out with scissors, so no bio loss there, or is it really littering if it biodegrades within a couple of weeks. anyway, hope that helps explain things. cheers
I just purchased your Plan and shortly the kit from your mate Wayne,
The plans I receive are from the original, not version 2, can you rectify that if possible
All the best, I just can't wait to start building such a great plane
Allan
How much was the laser cut kit? I couldn't find the price for that anywhere, thanks
Smokkedandslammed send an email to wayne at flyingsquirrelmodels@gmail.com
Thx for the mention on your website too BTW!
Nice work, would it make sense to use the wing hardpoints for extra battery's?
yes, it could. the batteries could also be inside the wings. there is room.
Nice... The twin engine setup makes this a very interesting platform.
Horacio Stjeward once i committed to a twin, there are lots of benefits, and a lot of bad habits of single engine planes go away. p effect, torque roll, gyroscopic precession, thrust height, thrust angle problems, and vibration problems go away because props are in clean air, and the vibration counters itself internal to the wing spar,and never transfers into the fuselage,where the sensors are located. etc, etc..
Superb craftsmanship.
Great job! you did it again.
Just awsome!!!
Hi i just looked at video on Gemini and would like to ask if there are instructions on how to put it together. For example cut out of wood and connections.
+Coolwater Hubby The plans come with build instructions for the laser cut kit assembly, and there is a build video on this channel for the scratch build version.
What kind of distance can you get out of this
Is there a way in which one can buy a Plug and Fly version from you? I live in the United States... I have seen videos of you testing planes that you build for some clients. How does that work? I'm very interested on this plane. 👍👍👍
What airfoil u use in jemini v2?
Beautiful plane. I would love to build one. What is the max prop size it can run in the stock configuration?
blueflamingo1 without modification of the airframe, a 17 inch prop will physically fit. if you flip the motor mount brackets, a 21 inch prop will fit. it's just a few bolts to swap. the recommended prop is a 13 x8.
Thank you. I was thinking of running 15x4 propellor for greater efficiency over a 13x8 (completely unnecessary I know)
blueflamingo1 i have tried runnig less pitch, and it was not as good. what might work better would be a larger diameter, even more pitch, and lower rpm/KV. if you try anything, i would be interested to know the results.
the lower pitch props work well on multi rotors at near zero airspeed, but for planes, a bit higher pitch usually works better. the 15 inch prop will fit, though. trying props is cheap at least.
Interesting, I never would have suspected that a large diameter but smaller pitch would perform worse.
How much thrust are you getting on your motors (roughly)?
I was thinking Cobra 2820 840kv on 15x6. This would give me around 4.5kg thrust total. I don't intend on carrying a large payload, instead just a very stable AP/FPV platform. Do you think this would be enough thrust? If I go ahead with this project, I will keep you informed on how the motors perform.
blueflamingo1 the difference is relative to airspeed. at zero airspeed, a prop with large diameter and less pitch. ike a multi rotor prop is the best, and produces the best static thrust.
static thrust is no longer relevant, as the airplane will not be static when the motor is running,a nd the prop is working. have a look at the props on a turboprop commuter plane in flight. lots of pitch, and they use constant speed props too. but they adjust for a lot of pitch in cruise flight.
i have not tried much larger props on gemini, however,a nd would be interested to know.
thanks.
questions:
1 does it work on high humidity or rain?
2 if one engine fails, the remaining, can bring the plane home?
2.1 there is one batt for both engines? so if one fails, the other can use the remaining power?..
3 is it possible to glide silently, if needed?
domnuspike humidity, no problem, in fact we did our 4 hr +endurance flight in high humidity.
rain, don't know, it's a wood plane, probably not the greatest idea to intentionally fly in the rain. if i did, it would seal the gaps in monokote with tape first.
one large battery pack. lots of cells, so if a cell fails, no problem. with modern cells, that should not be much of problem , anyway.
motors only running at 80% pf their max rating for continuous, so a motor failure is unlikely.
we did experience a motor failure on our prototype, at full power in a climb, and we were able to maintain control, without problem. it just pulled to one side a bit.
you can go back to our channel to watch the video. we happened to have a camera looking at the motor when it failed, and you can see the smoke roll out from the cowling.
we have upgraded the motors since then, and also, the new style motor mounts are heat sinks.
it glides very well, we recently glided from altitude for 40 minutes straight.
i set props to freewheel in glide to provide some aerodynamic braking actually.
check out our other videos, and the website for more info.
FPVREVIEWS 100% and 1000‰ complete answer,
thank you..
instead of installing to blade propeller is it possible to install four blade propeller for more thrust.
Yes, it's possible. however, the stock thrust is more than sufficient to carry a large external payload and have a good sustained rate of climb. The plane climbs primarily due to the lift, not so much the thrust. The motors just have to make enough thrust to maintain a climb airspeed, and a small angle of climb, and the wing does the rest. It's quite different from most sport aircraft.
Ok is it possible for you to construct the same and make detailed video for this as I wanna to learn as I am crazy about aeronautics
We've made lots of videos including a build video, and you can find out more info on our website. link in the description.
Subbed, love the design of the plane.
If you're flying it for hours, you probably use an autonomous flight controller with programmed waypoints. Which one do you favor?
Wow nice plane I wish I have that much clear air space but we have restrictions and we have to respect that orders so for now I just fly at eye sight altitude but nice plane.
juan sanchez You have to look at the reason that the laws are made, many new technologies are outlawed because of public fear that has its base in ignorance, and fanaticism.
governments are also scared of the technology, and tend to make blanket rules, not for safety, but out of fear of losing their power.
The benefits for the future, are a cleaner planet, and better agriculture production volume/quality, among saving lives, and providing super cheap access to space.
The governments will eventually realize the reality of it, and it will become mainstream, and common.
remember, in many countries, cell phones, radios, internet, and television broadcast were illegal, but we now have all of these technologies on our phones.
The countries that choose to regulate these technologies at this time will not be any safer, they will criminalize a sector of their most productive population, and will get a very late start with the largest growing industry in the world.
it is very sad indeed.
all of this has to be taken into account. just be safe, and learn what you need to do so.
best wishes, my friend.
yes the reason many guys broke air space with drums at ny city sadly now we all pay for the new rules. I love this hobby but now I have to check first where I fly by the way have drums and gliders..
FPVREVIEWS The govt knows these things now. However they do not want the average citizen to have these things! They are reserved for the ruling powers in the administration who spits on the constitution and defies congress and writes his own "presidential" bans and disallowances. This is the president who drone strikes his enemies after all.
This looks pretty cool! What is the estimated price to build the aircraft including every components. Thanks!
Gyula Szabó Gemini V2 (as slightly modified by Tom and Dave) is available in a variety of stages of completion. They range from Assembled Fuselage, Wings and tail sections to complete with FPV and PixHawk autopilot systems. You can contact Tom at teimages@sbcglobal.net for more details. Prices start at $1,500 USD.
Wow, that thing is awesome! About how long does it take to build?
the kit is much faster, but the scratch built version took me about 1 week, and a half to get in the air. the kit, probably less than a week.
Hi by chance will it ever come in EPO Foam
Any RTF Gemini Version 2 planes in the works? :)
Hi, I recently got the plans for the Gemini and have a few questions:
1.It is possible to use 2x 500mm tube rather than 1x 1000mm tube in the centre wing section, I can get 2 x 500mm tube for a 1/5 of the price than 1 x 1000mm tube.
2. The plan package on drop box came with sheets 2,3,4,5 of the plans, but not page 1, is this normal?
3. I have lots of ply available to use, but not much balsa, would it be ok to use ply where it says use balsa (it will be the correct thickness)? I still intend to use balsa for the square and circular dowel sections.
Thanks for the great plans, can't wait to get building this machine!
DroneDuo use the link below for the purchase of the carbon fiber tube, it should not be very expensive. it really needs the 1 meter long section, unless you have a way to join the two 500mm sections without losing strength. you could join them with an aluminum plug, but you would have to have it machined, then use small screws to secure it? One piece is best because it can be slid, out and removed for transport.
page 1 is now called the spec sheet, it has been re-named, this is normal.
it's ok to substitute lite-ply for many parts, just watch the overall weight. the design is tolerant to weight, but the payload, duration will be reduced slightly. in most cases, keep the thickness. Let me know if you have any other questions. my direct email is fpvreviews@gmail.com
best, spike
www.ebay.com/itm/OD-25-mm-ID-23-mm-x-1000mm-1m-3k-Carbon-Fiber-tube-Tubing-pipe-shaft-/141394052252?pt=LH_DefaultDomain_0&hash=item20ebbe049c
Thank you for the link, doesn't seem like a bad price now.
Do you have a source for the 7x1.2mm carbon strips? I can only find 6x1mm at the moment.
Thanks
DroneDuo i buy from rcfoam.com actually, 6X1 would work too, but it's so easy to order from them, that's what i'd do if possible.
Hello, I like your video so much! Can you tell me what's your favorite camera 2k for the fpv pease
I am french and I don't speak very well english:)
+philkiller ny i don't use high resolution cameras for the FPV feed, as they have high latency, i use a readymaderc 700tvl fpv cams for the video feed, and carry 2 go pro 2's, one go pro 3, and one mobius. they all work well, however, there are much better cameras now available.
+FPVREVIEWS Thank's a lot!!
If two compact DSLRs (like the Sony NEX) can fit in one compartment, can a standard size DSLR (EOS in particular) fit?
+Austin Blair the standard size DSLR is probably too big, i would guess, but you could always create a bulge in the aft fuselage to fit it, or scale the plane up slightly.
Can this plane fly on one motor, if one fails during flight ?
This is fantastic. Great to see the increase in capacity from V1. Shame to submit to practicality and simplicity of design by ditching the excellent cooling design from V2. Understandable though. What is the scope for solar power, given the wing surface area available. Could push you past 12km. Very impressed viewer from Australia, will look to get onto one in the near term.
Cooling design from V1*
it could go well beyond 12 km, just have not wanted too until i get a reliable autopilot. 120km distance linear in one flight, while carrying a payload.
by changing the airfoil, i have retained the performance. will be doing some demo flights soon to push the envelope for endurance. cheers!
FPVREVIEWS Ah ok, fair enough. Bloody good range. Keep it up. Great to see the project progress. Cheers.
What airfoil can I use slow Fly and trainer Rc plane material is tharmkol
Great video mate thanks!! At 10.33 it looks like Bruce from rc model reviews with a bigger beard lol
What's the wheel size?
Very well thought out.
How much does it weigh?
Incredible work, well done!
Hi my friend. where can I cut the wooden and what would be the cost
+Dennis Lobos Thanks for your inquiry. there are options, depending how much of the wood you are willing to cut, and what you want laser cut. send an email to flyingsquirrelmodels@gmail.com, and Wayne will be happy to send you the info package with pricing. The laser cut kit options ship from Canada.
This is really neat, but woud be really cool with retracts.
+Joe DeJohn i was thinking Tecnam style retracts.
Had to watch a video to understand what you were talking about. Heh. Might not be a bad idea. Easier said than done for sure. Really don't know all the options out there to comment further.
+Joe DeJohn the overall challenge of integrating retracts is fairly simple, in that most aircraft that have them either have very complex actuators, or are a low wing configuration, making the retracts simple to integrate.
you're right, though, it would be cool. and reduce drag, etc.
I wonder if you made a hinge with a spring that would straighten the posts. A small servo with gearing would collapse the hinge(retract). The posts are partly a stiff spring for shock absorbtion. Crude.
+Joe DeJohn E-flite makes some very nice and lightweight servo less retracts, it's just a problem of how to integrate them.
how much the total plane does cost?
where to buy ?
Can this aircraft fly single engine in case engine lost? With full payload what are realistic endurance at 7 thousand feet MSL field elevation and climbing to a cruise altitude of 8 thousand feet MSL?
+svsoftair I have not flown the Gemini V-2 on one motor, however, i have flown the prototype, (very similar) on one motor, and it pulled to one side a bit, but was very controllable. it was at max power at the time of the failure. i expect that a motor failure in itself would not be a problem. i may simulate a motor failure, by making a way to shut off the signal to the esc in flight, and do some testing, when i set the chance.
it's very unlikely that a motor would fail in flight, if the motors and esc's are not overloaded. about 75-80% of max is recommended for continuous operation at full power. and the wiring has to be large enough as well.
at that altitude, i don't think the endurance would be much different, if at all. with an air breathing engine, yes, but with the electric power, i don't think there will be a big difference. perhaps none. if there is any, an adjustment to the prop diameter or pitch would compensate. I have flown it up to 4008 meters, and it climbed just fine, at 30 amps out of 80.
+FPVREVIEWS thanks Spike
is this balsa or aircraft plywood? If I buy your plans, are they in .plt format so I can send to my own cutter?
+grinchyface It's made from Balsa, aircraft grade lite ply, and carbon fiber tube spar, and pultruded strips. The plans are PDF, but if you want it laser cut, the kit from Flying Squirrel Models is a great value, it's about the same price as the wood.
Thanks sir! I considered buying a kit, but as this would be my first balsa build I imagine I'd break or mar half the parts at least once. I purchased the plan last night- is there any chance for an extra fee I can get .svg .plt or another vector format that your laser guy might be using?
+grinchyface Thanks for your purchase! The laser cut files were created by Flying Squirrel Models for their own use in the manufacturing of the kit, so they re not available, however, they have priced to the kit in such a way, that it is cost effective when compared to purchasing the raw materials. I recently did a custom build from the kit, and it was excellent. Sorry I can't help with the specific request. Best, Spike
Just had a chance to glance through the files, am I correct in saying these are just assembly instruction and don't actually contain individual part dimensions or sketches?
+grinchyface you were sent several files, the build instructions and plans are separate. the plans should be there, 4 pages of them.
where is the air brake
Beautiful!
Thanks! Cheers!
Anybody have a ballpark on what the laser-cut kit might cost?
Adam McGhee its 415 USD, excluding postage
Interesting design.
Can you waterproof the Gemini?
+Jorge Tortosa I'm afraid that would be quite impractical. We did build a smaller uav a while back for yacht photography, called Atlantis. it had 1.5 meter span, and 50 minutes endurance. single boom pusher. it flew very well, but applications are limited. we find it better to spend the extra weight required for waterproofing simply to increase airframe performance, even when flying over water. there would be a very special set of circumstances where the waterproofing solution would be good, but for now we are concentrating on land based aircraft which can be flown over water.
i like your video. i am making a UAV to track endangered species of Dogs in Africa ( African painted dogs) in Zimbabwe as a part of school project. i no nothing about FPV and how they work. we made a aircraft with wings and everything and we need one FPV. can you help me to know about FPV and how can i get cheap good one and easy to install ? thanks
There are lots of good videos on how to setup the basic FPV components, such as this one:
th-cam.com/video/CiFRNJUUdwM/w-d-xo.html
great thank you, see... since i am doing different assemblies to make this UAV fly, i am trying to get something quick.. is there a product out there you recommend that is kind of install, plug and go ? cheap and reliable
thank you again for your quick replay.
did you ever make that uav!?!?
What osd are you using?
+daniel perkins Telefly OSD that came with the tracker. you don't have to use it for the tracking feature, you can piggy back another osd if you prefer. but i like it.
+FPVREVIEWS Sorry for another question, but how long does it take (on average) to build?
+daniel perkins can be built in 2-3 weeks.
About how much does this entire project cost to build?
The airframe can be built for 1000-1300 US depending on kit version, or scratch built version, and choice of propulsion. not including battery, control system, or fpv equipment. It's more than the foamies, but low cost when you compare it to other UAV's with similar capabilities.
wow so Beautiful thanks ..
peter verrone glad you like it!
nice project!! 100!!
Cual es el precio del u a v.
wow nice big fpv plane
How much for the rubber chicken?
42
@@FPVREVIEWS LOL Let me see if I can get a loan from Zaphod first and I'll get back to you.
It is very good. Every time need so like long range aircraft.. But Why the Uncle doesn't speak?! :)
Zafer Guler Thanks for your interest. Dad speaks sometimes, but he is a bit shy on camera.
Very cool
👍👍👍... nice
nice
I have to admit, My situation forces me to buy Chines, but when I see someone like you GUYS Work hard to produce something so beautifull and well thout off, and then a Chiness guy comes along and just start producing cheap, Just because the so called Polotishens have solled out to America's enemy, Brakes my hart. Anyways Thank you for sharing, and wish you the Best of LUCK...:)
Great plane and Super mario....
Rubber Chicken :D
So it can be used to drop a grenade...
yes, and you can also murder people with a car or a fork. Much more likely to succeed with the last two things... cars and forks cannot monitor crops or count wild animals BTW
@@FPVREVIEWS Yes, you right. I think its harder to get caught with drone :(
@@fatherlandchild2780what are your intentions anyway?
@@FPVREVIEWS Peacefull. Was just wondering If someone Else does it how are we able to protect against it lol
@@fatherlandchild2780Don't wait until it's a threat. When someone approaches you about something like that, notify the Appropriate Authorities, so they can investigate the person before they are able to acquire the equipment, ability to do such a horrible thing, just like any other sinister plot. Where are you located anyway?
We should use this to patrol the US-Mexico border. Stop illegal crossings.
it's an ideal application for a long endurance aircraft. We could scale it up for such things, for even more endurance.
more i see, more you need to be able to 3d print, there are many fixed wing uav solutions in the market, you cant scale a hobby.
WTH IS WRONG WITH THIS GUY'S EARS?
shut up and take my money!
whats your maximum payload?
Depends on how little battery you are willing to carry. about 7 lbs would be max, and still be able to fly for at least 30 minutes. at the recommended max gross weight. if you overload the plane, and only fly for a few minutes on small batteries, probably could carry more than 10 lbs. not a great idea, but would do it. if you want to lift a lot of weight, a 16 ft telecaster would lift more. gas engine.
nice