On my fms 800mm corsair..i used cheap hk $12 1400kv motor,8x6 ,1000 3s and 50 amp esc i had from a boat and removed all the heat shrink and water cooling ...cg was perfect..50mm from leading edge...when trimmed just 2 clicks of reflex on elevator at half throttle...was not a speed demon ,but had plenty of power and 5 plus min flights.
Yep, I can usually only afford budget components but so far that has worked out as well as the much more expensive stuff ;-) This one now had a RacerStar BR2208 1400kv Motor, APC 7x5 Thin Electric Prop, HobbyWing Skywalker 20A ESC, and I use a Tattu 3S 650mAh 75C Lipo.
@@GroundControlRC do you think it could be altered to fit a 1000 3s? And where was cg when you finished all your mods.. i think 35 to 50mm range is about right from my memory..been over 10 years since i built 800mm fms kits..thanks for sharing ..i think this would be a great field hand launch model also..
@@roadstar499 After all my MODs the CG is 56mm from the Leading Edge of the Wing at the Outer Gun Turrets. I always measure my CG at a location that makes it easy to check so mine is not measured from the specified location which is 68mm +-5mm from Leading Edge of Wing where it meets the Fusleage. I think the Battery Bay could be enlarged a bit but it depends on the form factor and dimensions of the LIPO. The 3S 650mah LIPO I use is a snug fit but I haven't enlarged the bay. This one is a breeze to hand launch from the belly or the wingtip without a gyro.
@@GroundControlRC the fms p51 is actually 750mm..its pretty much exact airframe imo..this paint scheme is great also..its a great price and can be modified if needed for very little cost and time..its a homerun for mustang lovers...there's even a guy that added retracts.
Like the vids! Whats the benefits of a 2-blade prop vs a 3 or 4-Blade Prop? Im assuming you can get them 4-Blade Prop aftermarket in 5mm. What made you go with the 2-Blade Prop? Is it just easier to figure out the correct prop size? Also how do you know that you need a higher or lower Kv motor? What is it doing or not doing that makes you be able to tell the difference?
Thank You! It all comes down to motor and prop testing. I test a lot of motors and props and document my bench test for thrust and efficiency. 2-blade prop are more efficient then 3-blade or 4-blade props. Motors with lower kv will have more torque than a motors of the same size with a higher kv. See you in the Air!
Nice development flights. The plane is getting better and better. And 3 smooth landings in a row. Looking good! Sounds like this might be a 3S airplane, but the new motor will tell. 400KV more = about 2800 more shaft RPMs unloaded. I'm curious as to how it would do on 2S with a 2500KV? Maybe even 3000KV. I noticed the UMX 2S planes have moved up in KV ratings too. 2000KV motors are now 3000KV or even 3500KV Happy flying!
Thank you much! I'm very happy with this Power System on 3S but I'm very curious about the performance of the 1800kv Motor. My thinking is with an 1800kv Motor I can fly it on 2S with a 7x4 Prop and on 3S with a 7x3 Prop and hopefully get great flight time with both while still having plenty of power on both. I think Volantex chose the kv wisely for a 2S Power System. I have some 24g 2S 3000kv Motors I thought about testing but they're not rated for 3S so I decided not to go that route. I think as long as you have a large motor with plenty of torque a higher kv motor would give you more power without sacrificing too much flight time. Maybe a 2212 or 2216 Motor? See you in the Air!
@@GroundControlRC, If sticking with 2S power, then this might be worth putting on the test stand....more torque than the shorter stator 2208 AND higher rpms for sustained higher prop speed. Who needs 3S?: www.ebay.com/itm/Miniature-DC-Brushless-Motor-2211-3000KV-Suitable-for-Miniature-Fixed-Wing-A6X2/264718831761?hash=item3da278d091:g:pQcAAOSw4B9erck~
@@Doggeslife , that looks exactly like the motor that I have. They used to refer to these as Blue Wonder Motors. I think the ones I have are Blue Wonder clones produced by Hobby King as mine are Hextronik. They used to have these in several KV including a 1700kv. hobbyking.com/en_us/hextronik-24gram-brushless-outrunner-1700kv.html hobbyking.com/en_us/turnigy-2211-brushless-indoor-motor-2300kv.html Here is the one I have: hobbyking.com/en_us/hextronik-24gram-brushless-outrunner-3000kv.html They're pretty good motors for the price just not as versatile as my others as the 24g motor is only rated for a 2S. When I put mine on the thrust stand with a 2S LIPO it was producing 393g of thrust pulling 9.9amps with a 6x3 2-blade prop. I think you could definitely get the thrust needed on a 2S with this motor but I think the amp draw will also be about the same. I'll see how that BR2208 1800kv performs when I get it. Hopefully as much thrust pulling fewer amps ;-)
Thanks for sharing amps data & your experience with this plane...ESC point is valid point too- as most of motor vibrations r bcz of bad ESCs too 2808 1800kv motor on 6.7in 4 blade prop 2s is grossly under propped so u had to run it at hi rpm to keep plane afloat, meaning hi throttle needed for cruise ie hi current 2808 1800kv motor's match is 8 in or a 9 in Prop that they have on Volentex cub & with that u can run it at just quarter throttle for cruise Big 2 blade props, on low kv motor, that runs warm, requiring quarter throttle for cruise on 2s not 3s is the most efficient setup...Experimentally, hi kv motors draw proportionally more amps REASONING: The faster u spin, the more distance bearings races travel wrt eachother... Energy losses = work done in friction =friction force * distance travelled Experimentally same size 4 blades props pull roughly 1.5 times more amps than 2 blades while producing marginally more thrust REASONING : Next blades having to use turbulent air in the wake of previous blade - in 4 blades prop next blade is close by.
Indeed torque roll point is correct....That's the issue with these PNP models that their power systems r not properly matched to the size of the plane....U have put the r8 size 2208 mototr on this one & if u wanna run 2s u can go with 8 in prop ...If u wanna run 3s then 7in prop....U got it as giveaway gift but that's y I always buy kit planes & put power system compatable with model. not the just the recommended one
Yep! I think that is the way to go. I like it when I can order a kit and select the electronics myself. I did that with the Fun Cub 1100 and I absolutely love the power and performance of that Plane. I wish they always had a kit as an option on these planes.
I have the PNP and fly a easy 5 minutes on the original lipo of 500mah. and enough power, on the 3S 1000mah a easy 10minutes with so much power that the motor mount came loose, causing major vibrations that upset the giro's, so I will just stick to the 2S lipo's with a higher mah. Mine has a problem with the stock receiver, in safe mode the rudder won't come back to neutral, luckily its not the elevator, or ailerons. :-)
Thank you much for the information Ruudy as that confirms my issue. I was flying with a 2S 450mah and by 3 minutes of flight it was time to get it on the ground because the batteries were fully depleted. At the rate my motor was using amps I would need a 2S 1000mah just to get 5 minutes of flight. The 2S Power System definitely has sufficient power and I was impressed by that ;-) Shame regarding your receiver. Mine does not have a gyro but the plane is very stable in the air and very maneuverable. I really like it. Thanks again for this information Ruddy as I was fairly sure my stock motor was the issue. See you in the Air!
OOps! i Thought you stated 3S not 2S! The 2S I'm using is a GNB 2S 550mah. If you can find battery dimensions that are approx. the same length and width but thicker it would probably work. As stated below, I do like the GNB and Nanotech LIPOs. I do like the performance of a 3S over a 2S on this Plane. I'm not sure what 3S 1000mah LIPO Ruudy was using. My GNB 3S 550mah LIPO was a snug fit. I'm thinking of cutting out some foam so I can fit a LIPO that size in there. I don't know if Ruddy had to do that to fit a 3S 1000mah LIPO in that battery bay. Perhaps he'll chime in to give a link to the LIPO he used. I do like the GNB and Nanotech LIPOs. I have a lot of them and they seem to perform well even after many flights and they don't break the bank ;-) I just looked at the battery bay door and I think I will have to MOD that as well to fit any of my 3S 1000mah LIPOs in that Plane. They should have provided a larger battery bay for a Warbird of that size as I'm definitely going to be in the throttle a lot with a Warbird ;-) I would like to get at least 6 minutes of flight time on 3S.
Excellent analysis mods and fixes for this plane, but many potential issues and too short of a flight time for my liking. I'm having a similar issue with my XK X420 VOL, heavy, fragile and under powered. I will probably skip the 768-1, I'm just so happy with my P51-D minis, yes I got 2 ;)
Thank you very much! Yeah, unfortunately this one had some issues right out of the gate. I now have a great flying Mustang with decent flight time but it was pretty frustrating getting there. You can't beat those Mini Mustangs for the Fun Factor or price ;-) See you in the Air!
I think the RTF Version of this Plane would be a better comparison as it has a Gyro and this one doesn't. This one flies like a much different Plane than the Mini Mustang. I highly recommend the Mini Mustang as a Trainer Plane but I would not recommend this one as a Trainer, especially without a Gyro. I would classify this Plane as an Intermediate to Advance Plane. After working through the issues I had it's a very nice flying Plane that's fast, agile, and aerobatic. I'm going to have a lot of fun flying it ;-) See you in the Air!
Hi, thank you very much for your review. I recently bought PNP version and i have larger ESC and 3S battery to try on it. I was reviewing the way this plane was taking off even with your 3S-based power system, and it seems like even for that setup it takes a long time to take off. I wonder if you measured elevator's total travel, because i think it could be on the shorter side. Perhaps increasing elevator travel will give you faster take off. I you try it, please let us know the results. Thank you again and see you soon!!
Thank you Gabriel! I does take a long run for me to get it in the air. The dirt road where I takeoff is very rough and I've found if I throttle up slowly on takeoff the Plane is less likely to bounce off the road before liftoff ;-) I've started hand launching this Plane because of the poor condition of this dirt road. I didn't realize until now that I haven't created a Setup Sheet for this Plane. I'll try to get that created soon and it will list all of my control surface deflections as well as EXPO and Linkage. It's a beautiful Mustang and I hope you're having a lot of fun with it ;-) I'll try to get my setup posted soon. See you in the Air!
On my fms 800mm corsair..i used cheap hk $12 1400kv motor,8x6 ,1000 3s and 50 amp esc i had from a boat and removed all the heat shrink and water cooling ...cg was perfect..50mm from leading edge...when trimmed just 2 clicks of reflex on elevator at half throttle...was not a speed demon ,but had plenty of power and 5 plus min flights.
Yep, I can usually only afford budget components but so far that has worked out as well as the much more expensive stuff ;-)
This one now had a RacerStar BR2208 1400kv Motor, APC 7x5 Thin Electric Prop, HobbyWing Skywalker 20A ESC, and I use a Tattu 3S 650mAh 75C Lipo.
@@GroundControlRC do you think it could be altered to fit a 1000 3s? And where was cg when you finished all your mods.. i think 35 to 50mm range is about right from my memory..been over 10 years since i built 800mm fms kits..thanks for sharing ..i think this would be a great field hand launch model also..
@@roadstar499 After all my MODs the CG is 56mm from the Leading Edge of the Wing at the Outer Gun Turrets.
I always measure my CG at a location that makes it easy to check so mine is not measured from the specified location which is 68mm +-5mm from Leading Edge of Wing where it meets the Fusleage.
I think the Battery Bay could be enlarged a bit but it depends on the form factor and dimensions of the LIPO.
The 3S 650mah LIPO I use is a snug fit but I haven't enlarged the bay.
This one is a breeze to hand launch from the belly or the wingtip without a gyro.
@@GroundControlRC the fms p51 is actually 750mm..its pretty much exact airframe imo..this paint scheme is great also..its a great price and can be modified if needed for very little cost and time..its a homerun for mustang lovers...there's even a guy that added retracts.
@@roadstar499 Great flying airframe.
I saw the video with the retracts MOD.
That's very cool.
Thank you for sharing all this
You are so welcome!
See you in the Air!
Ahahaha, We Believe.
When things aren't goin Your way,,,
Can't wait to get Mine singing. Great show and Your finals were sick.
Thank you Jono! That Plane gave me the hardest time during the review of any Plane I've reviewed ;-)
Like the vids! Whats the benefits of a 2-blade prop vs a 3 or 4-Blade Prop? Im assuming you can get them 4-Blade Prop aftermarket in 5mm. What made you go with the 2-Blade Prop? Is it just easier to figure out the correct prop size?
Also how do you know that you need a higher or lower Kv motor? What is it doing or not doing that makes you be able to tell the difference?
Thank You!
It all comes down to motor and prop testing.
I test a lot of motors and props and document my bench test for thrust and efficiency.
2-blade prop are more efficient then 3-blade or 4-blade props.
Motors with lower kv will have more torque than a motors of the same size with a higher kv.
See you in the Air!
Nice development flights. The plane is getting better and better. And 3 smooth landings in a row. Looking good!
Sounds like this might be a 3S airplane, but the new motor will tell. 400KV more = about 2800 more shaft RPMs unloaded.
I'm curious as to how it would do on 2S with a 2500KV? Maybe even 3000KV. I noticed the UMX 2S planes have moved up in KV ratings too. 2000KV motors are now 3000KV or even 3500KV
Happy flying!
Thank you much! I'm very happy with this Power System on 3S but I'm very curious about the performance of the 1800kv Motor. My thinking is with an 1800kv Motor I can fly it on 2S with a 7x4 Prop and on 3S with a 7x3 Prop and hopefully get great flight time with both while still having plenty of power on both. I think Volantex chose the kv wisely for a 2S Power System. I have some 24g 2S 3000kv Motors I thought about testing but they're not rated for 3S so I decided not to go that route. I think as long as you have a large motor with plenty of torque a higher kv motor would give you more power without sacrificing too much flight time. Maybe a 2212 or 2216 Motor? See you in the Air!
@@GroundControlRC, If sticking with 2S power, then this might be worth putting on the test stand....more torque than the shorter stator 2208 AND higher rpms for sustained higher prop speed. Who needs 3S?:
www.ebay.com/itm/Miniature-DC-Brushless-Motor-2211-3000KV-Suitable-for-Miniature-Fixed-Wing-A6X2/264718831761?hash=item3da278d091:g:pQcAAOSw4B9erck~
@@Doggeslife , that looks exactly like the motor that I have. They used to refer to these as Blue Wonder Motors. I think the ones I have are Blue Wonder clones produced by Hobby King as mine are Hextronik. They used to have these in several KV including a 1700kv.
hobbyking.com/en_us/hextronik-24gram-brushless-outrunner-1700kv.html
hobbyking.com/en_us/turnigy-2211-brushless-indoor-motor-2300kv.html
Here is the one I have: hobbyking.com/en_us/hextronik-24gram-brushless-outrunner-3000kv.html
They're pretty good motors for the price just not as versatile as my others as the 24g motor is only rated for a 2S.
When I put mine on the thrust stand with a 2S LIPO it was producing 393g of thrust pulling 9.9amps with a 6x3 2-blade prop.
I think you could definitely get the thrust needed on a 2S with this motor but I think the amp draw will also be about the same.
I'll see how that BR2208 1800kv performs when I get it. Hopefully as much thrust pulling fewer amps ;-)
Thanks for sharing amps data & your experience with this plane...ESC point is valid point too- as most of motor vibrations r bcz of bad ESCs too
2808 1800kv motor on 6.7in 4 blade prop 2s is grossly under propped so u had to run it at hi rpm to keep plane afloat, meaning hi throttle needed for cruise ie hi current
2808 1800kv motor's match is 8 in or a 9 in Prop that they have on Volentex cub & with that u can run it at just quarter throttle for cruise
Big 2 blade props, on low kv motor, that runs warm, requiring quarter throttle for cruise on 2s not 3s is the most efficient setup...Experimentally, hi kv motors draw proportionally more amps
REASONING: The faster u spin, the more distance bearings races travel wrt eachother... Energy losses = work done in friction =friction force * distance travelled
Experimentally same size 4 blades props pull roughly 1.5 times more amps than 2 blades while producing marginally more thrust
REASONING : Next blades having to use turbulent air in the wake of previous blade - in 4 blades prop next blade is close by.
Indeed torque roll point is correct....That's the issue with these PNP models that their power systems r not properly matched to the size of the plane....U have put the r8 size 2208 mototr on this one & if u wanna run 2s u can go with 8 in prop ...If u wanna run 3s then 7in prop....U got it as giveaway gift but that's y I always buy kit planes & put power system compatable with model. not the just the recommended one
Yep! I think that is the way to go. I like it when I can order a kit and select the electronics myself. I did that with the Fun Cub 1100 and I absolutely love the power and performance of that Plane. I wish they always had a kit as an option on these planes.
I have the PNP and fly a easy 5 minutes on the original lipo of 500mah. and enough power, on the 3S 1000mah a easy 10minutes with so much power that the motor mount came loose, causing major vibrations that upset the giro's, so I will just stick to the 2S lipo's with a higher mah. Mine has a problem with the stock receiver, in safe mode the rudder won't come back to neutral, luckily its not the elevator, or ailerons. :-)
Thank you much for the information Ruudy as that confirms my issue. I was flying with a 2S 450mah and by 3 minutes of flight it was time to get it on the ground because the batteries were fully depleted. At the rate my motor was using amps I would need a 2S 1000mah just to get 5 minutes of flight. The 2S Power System definitely has sufficient power and I was impressed by that ;-) Shame regarding your receiver. Mine does not have a gyro but the plane is very stable in the air and very maneuverable. I really like it. Thanks again for this information Ruddy as I was fairly sure my stock motor was the issue. See you in the Air!
OOps! i Thought you stated 3S not 2S! The 2S I'm using is a GNB 2S 550mah. If you can find battery dimensions that are approx. the same length and width but thicker it would probably work. As stated below, I do like the GNB and Nanotech LIPOs. I do like the performance of a 3S over a 2S on this Plane. I'm not sure what 3S 1000mah LIPO Ruudy was using. My GNB 3S 550mah LIPO was a snug fit. I'm thinking of cutting out some foam so I can fit a LIPO that size in there. I don't know if Ruddy had to do that to fit a 3S 1000mah LIPO in that battery bay. Perhaps he'll chime in to give a link to the LIPO he used. I do like the GNB and Nanotech LIPOs. I have a lot of them and they seem to perform well even after many flights and they don't break the bank ;-) I just looked at the battery bay door and I think I will have to MOD that as well to fit any of my 3S 1000mah LIPOs in that Plane. They should have provided a larger battery bay for a Warbird of that size as I'm definitely going to be in the throttle a lot with a Warbird ;-) I would like to get at least 6 minutes of flight time on 3S.
Excellent analysis mods and fixes for this plane, but many potential issues and too short of a flight time for my liking. I'm having a similar issue with my XK X420 VOL, heavy, fragile and under powered. I will probably skip the 768-1, I'm just so happy with my P51-D minis, yes I got 2 ;)
Thank you very much! Yeah, unfortunately this one had some issues right out of the gate. I now have a great flying Mustang with decent flight time but it was pretty frustrating getting there. You can't beat those Mini Mustangs for the Fun Factor or price ;-) See you in the Air!
Try a brushless upgrade in the 420: th-cam.com/video/uo3HkJaUgwk/w-d-xo.html
Great job thanks for sharing cheers 👍
Thank you much! See you in the Air!
How's this bigger mustang compared to eachine mini P51d?
I think the RTF Version of this Plane would be a better comparison as it has a Gyro and this one doesn't. This one flies like a much different Plane than the Mini Mustang. I highly recommend the Mini Mustang as a Trainer Plane but I would not recommend this one as a Trainer, especially without a Gyro. I would classify this Plane as an Intermediate to Advance Plane. After working through the issues I had it's a very nice flying Plane that's fast, agile, and aerobatic. I'm going to have a lot of fun flying it ;-) See you in the Air!
@@GroundControlRC tq man. I have the mini mustang as a newbie. Been racing rc car for years. It's such a fun little thing to fly.
@Vaccine Sheep , thanks for the info! I wondered how the Gyro version would fly ;-)
Hi, thank you very much for your review. I recently bought PNP version and i have larger ESC and 3S battery to try on it. I was reviewing the way this plane was taking off even with your 3S-based power system, and it seems like even for that setup it takes a long time to take off. I wonder if you measured elevator's total travel, because i think it could be on the shorter side. Perhaps increasing elevator travel will give you faster take off. I you try it, please let us know the results. Thank you again and see you soon!!
Thank you Gabriel! I does take a long run for me to get it in the air. The dirt road where I takeoff is very rough and I've found if I throttle up slowly on takeoff the Plane is less likely to bounce off the road before liftoff ;-) I've started hand launching this Plane because of the poor condition of this dirt road. I didn't realize until now that I haven't created a Setup Sheet for this Plane. I'll try to get that created soon and it will list all of my control surface deflections as well as EXPO and Linkage. It's a beautiful Mustang and I hope you're having a lot of fun with it ;-) I'll try to get my setup posted soon. See you in the Air!
Nice bro
Thank you! I finally have some power and good flight time ;-) See you in the Air!