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RC Jim
เข้าร่วมเมื่อ 1 ก.พ. 2011
Down to earth practical insights from an ordinary RC enthusiast. Jim is a former automotive engineer who loves to come up with new devices and ways of doing things. He began flying control line planes as a child. When his two boys were entering their teenage years, Jim took up RC flying with them. Self-taught their approach was to go flying until nothing would fly anymore, take the pieces home, put them together and then have another go! They especially loved dog fighting, and doing crazy stunts. More recently, Jim has entered into part-time retirement, and has gotten back into regular flying again.
Join Jim in his "man cave" as he goes through things that he has learned along the way and shares them from a very "down to earth" perspective. You will also see the exploits of other RC flyers at the Central Coast Model Aero Club in Mannering Park, NSW.
LIke it? buymeacoffee.com/rcjim
Join Jim in his "man cave" as he goes through things that he has learned along the way and shares them from a very "down to earth" perspective. You will also see the exploits of other RC flyers at the Central Coast Model Aero Club in Mannering Park, NSW.
LIke it? buymeacoffee.com/rcjim
Freewing FA-18 90mm EDF Ducted Fan Replacement
Searching for a bit more power and thrust out of your Freewing FA-18 ducted fan jet? I saw that another flyer did that, saying that he got better performance, so I decided to follow suit and then test it to see if it was true. In this video, RC Jim shows you how to replace the ducted fan unit - it's not without issues - and then tests the thrust generated by each setup.
มุมมอง: 581
วีดีโอ
Freewing FA-18 Ducted Fan Jet Repair Final
มุมมอง 17012 ชั่วโมงที่ผ่านมา
RC Jim completes the repair of this beautiful RC ducted fan FA-18 from Freewing. Previously we have shown you most of the structural repairs, and now in this video we show the finishing and some work on the bottom of the plane and the ducted fan. In doing this work we discovered the fault that led to the crash.
Freewing FA-18 Crash Repair Part 1
มุมมอง 499วันที่ผ่านมา
What I feared has happened. I crashed my beautiful ducted fan jet that my son gave me! Initially I was devistated, but looking at it on the bench, I realised it might be possible to repair it and get it flying again. Fortunately I had carefully searched for and found all of the broken foam pieces - just missing a couple of nose gear door springs. So, in this first video we get into the repair o...
Hobbyking Bixler 2 Sailplane Launch Cradle
มุมมอง 1K21 วันที่ผ่านมา
Having had issues with hand launches, RC Jim decided to build a launch cradle for this RC sailplane. The first few attempts didn't work, but he finally came up with a design that does a great job of getting this RC glider up into the air!
VQ SBD Dauntless Crash Investigation
มุมมอง 2.3K21 วันที่ผ่านมา
While our maiden flight was beautiful, the second finished in disaster. As RC Jim picks up the pieces he goes through what might have gone wrong.
VQ SBD Dauntless Build Completion & Maiden Flight
มุมมอง 1.3K21 วันที่ผ่านมา
With the build of this beautiful RC Dauntless dive bomber completed, RC Jim shows you the configuraton of the 'internals', then does some final adjustments prior to bringing you along to the field for the maiden flight. The second flight didn't go so well - click on the link at the end to see the aftermath of that!
VQ SBD Dauntless Build - Part 3
มุมมอง 64121 วันที่ผ่านมา
RC Jim continues with the build of this fabulous World War 2 dive bomber. In this video he brings it to the point that nearly all of the mechanical aspects of the plane are complete. In the next video he will finish off the electronics and have it ready to fly.
VQ SBD Dauntless Build - Part 2
มุมมอง 440หลายเดือนก่อน
RC Jim continues the build of this beautiful radio controlled warbird. There were some major challenges and setbacks, including breaking some pieces. Jim worked through them all, and the result should be even better than if they had not happened!
Ups and Downs of Flying at CCMAC
มุมมอง 388หลายเดือนก่อน
Getting your plane up and down is pretty basic, and important. None the less, nearly all of us experience ups and downs in doing that! In this video, RC Jim shows you some of the ups and downs of a typical day of flying at the Central Coast Model Aero Club in New South Wales, Australia.
VQ SBD Dauntless Unboxing and Build
มุมมอง 1.9Kหลายเดือนก่อน
RC Jim shows you how this ARF RC Plane is packaged for shipping, and then proceeds with the first stages of building. In detail he shows how he sets up a set of servo operated retracts. Having owned, and crashed, this same model before, RC Jim has a good idea of what to watch out for and hopes to have a much better result this time! The previous plane had been acquired from another flyer, and J...
Crash Repair Complete - Great Planes Super Decathlon 40
มุมมอง 6042 หลายเดือนก่อน
That didn't take too long, and wow, what an outcome! See the final touches on this repair, and get ready for the remaiden flight of this electric powered Great Planes Super Decathlon 40.
Update 2 Great Planes Decathlon 40 Crash Repair
มุมมอง 1.4K2 หลายเดือนก่อน
In this second video, RC Jim shows the progress on this repair up to the point where the repaired bits are ready for covering. As a bonus, he shows you how a satellite receiver can be used to have a more dependable radio connection.
Crash Repair 1 - Great Planes Decathlon 40
มุมมอง 7542 หลายเดือนก่อน
This is the first video showing the repairs being made on this once beautiful plane. Our objective is to first of all make solid structural repairs to get it flying again, then, given we are successful with that, do some more cosmetic work to make it look great again. In this repair video, Jim shows some rather unique techniques, so watch it all the way through!
Radiomaster and Spektrum Trainer Setup
มุมมอง 5642 หลายเดือนก่อน
Did you know that you can use a DSM compatible transmitter, such as a Radiomaster 4 in 1, along with a Spektrum radio to have a wireless trainer/student radio setup? It's simple, and RC Jim shows you how in this video. See the video on the link at the end for details in setting up any wireless trainer involving a Spektrum radio.
Crash Analysis - Great Planes Decathlon 40
มุมมอง 4.4K3 หลายเดือนก่อน
RC Jim examines the flight data, comparing it second by second with what we see in the video to work out what happened in the crash of this beautiful plane. He then examines the wreckage to see what we need to do to fix it - and we will!
Maiden Flight & Crash - Great Planes Decathlon 40
มุมมอง 9K3 หลายเดือนก่อน
Maiden Flight & Crash - Great Planes Decathlon 40
Seagull 20cc Gas Ultimate Biplane Maiden
มุมมอง 7903 หลายเดือนก่อน
Seagull 20cc Gas Ultimate Biplane Maiden
Update 4 - Great Planes Decathalon 40 Build
มุมมอง 2503 หลายเดือนก่อน
Update 4 - Great Planes Decathalon 40 Build
Major Crash Repair FMS 64mm EDF F-16 Jet
มุมมอง 2843 หลายเดือนก่อน
Major Crash Repair FMS 64mm EDF F-16 Jet
Update 3 - Great Planes Decathlon 40 Build
มุมมอง 1463 หลายเดือนก่อน
Update 3 - Great Planes Decathlon 40 Build
FMS F-16 Antenna Placement and Telemetry Voltage Probe
มุมมอง 1123 หลายเดือนก่อน
FMS F-16 Antenna Placement and Telemetry Voltage Probe
Update 2 - Great Planes Decathlon 40 Build
มุมมอง 2113 หลายเดือนก่อน
Update 2 - Great Planes Decathlon 40 Build
Update 1 - Great Planes Decathlon 40 Build
มุมมอง 1503 หลายเดือนก่อน
Update 1 - Great Planes Decathlon 40 Build
Great Planes Super Decathlon 40 Build Resumed
มุมมอง 2604 หลายเดือนก่อน
Great Planes Super Decathlon 40 Build Resumed
Duraplane Aerobat 40 Conversion to Electric
มุมมอง 3254 หลายเดือนก่อน
Duraplane Aerobat 40 Conversion to Electric
Black Horse Super Air Major Repair Completion
มุมมอง 1684 หลายเดือนก่อน
Black Horse Super Air Major Repair Completion
Thanks Jim for sharing. You have made a great job of your plane, well done. I have the same plane 23 years now and during the summer i misjudged the top of a hedge when coming into land and damaged both halfs of the wing. Im now in the process of repairing the wing and recovering it. Im also now thinking about recovering the entire fuselage and tail and keeping it the Tuskeegee airmen scheme with the red tail. I like the job you did with the pilot, im thinking of doing the same as to keep the plane authentic. Kind regards Aidan.
I'm sure you will do well. Thanks for sharing.
To repair crushed foam, to straighten it out, I heat up pieces with hot wet rags. I get them wet, heat the rags in my microwave, and apply to the foam for a few minutes. I often spend an hour repeatedly applying newly heated rags. Once the foam expands, I twist and pull it into the former shape. I use white Gorilla Glue usually to set the pieces along with toothpicks and wooden BBQ skewers and blue painters tape. Gorilla Glue doesn't stick it much. I also use a glue like Foam-Cure or Foam-Tac, if it isn't bent or crushed, depending on where it goes.
Yes, that's similar to the approach of many, and it works. Where the original formula, light brown Gorilla glue is really good is when you have a rather mangled break - it will fill in the gaps, and as it expands it creates a foam that is rather similar in density to the foam in the airplane. Just do your best to tape up the joins on the outside. That will reduce the amount of mess, force the expanding glue to fill in the gaps, and also make the foam that it creates a bit more dense.
I bought some spare 304 Stainless Steel Dual Hook Tension Springs on eBay for the landing gear doors. I seem to lose them a lot. The size was Dia 0.4 x 4 x 15mm. The 4mm is the diameter of the spring. The 15mm was the length.
Thanks for the detail. I bought a box of assorted springs so that I could use them for other things as well - and I wasn't sure what size I needed.
7.128 max trust, not very impressive. But your FA-18 90mm is!
Yes, it seems that many EDFs are lacking in static thrust, which makes take offs challenging. But because of the velocity of the air coming out of the nozzle(s), they perform quite well once up to speed.
@@RCJim Just a suggestion. With my Avanti S V2 80mm, I swapped out the 80mm 12-blade for an 80mm 9-blade, it increased the thrust by ~5%. Maybe test this out on your thrusting device. You may lose some of the "whizzing" sound, but it'd be interesting to test.
Why would replace the fan and motor with one that produces less overall thrust??
I didn't know that until I tested it. The original fan is now back in the jet. Based on what another TH-camr said on his channel, I expected the FMS fan to do better. Now all of us can benefit from what we have discovered.
Are you think right?? TheFMS is going to spin SLOWER thatn the Freewing fan!!!
Yes, I made that correction in the text displayed at the bottom of the screen.
Hi Jim, I do lots of motor upgrades. I prefer to buy kits and install my own components. A couple of issues here. You interpreted the KV of the motors incorrectly. It was obvious that the FMS would be less powerful from the basic spec. The Higher the KV the more thrust. But with a downside of consuming more power, And requiring a larger power ESC. The FMS has a lower KV but would be more efficient given if using the same fans. The other factor you need to consider is the pole count of the motors. Some ESCs you can actually specify the pole count. Others you can only adjust the timing. You would need to match the Freewing ESCs timing with the Motor required timing. ideally you should have swapped the ESC as well. If the aircraft was underpowered after reviewing the specification of the EDFs you would have been better placed swapping to the 8S EDFs and ESCs from Freewing. They are a direct swap for the 6S versions.
Yes, I'm not sure how it all happened, but I was thinking that I was ordering an EDF that had a higher kv rating. It was only when I was editing the video that I realised that I had those numbers mixed up, so I put in the correction in the text at the bottom of the screen. With regard to ESC timing, those two motors are close enough regarding pole count and speed that I wouldn't think it would make a difference. Some ESCs actually have an automatic timing setting. I don't know if that is the case with the ones from Freewing. Even with a fixed timing setting, with the FMS having a slightly lower kv and generating slightly less thrust, it seems to pretty well explain what's happening. If you are suggesting using 8s batteries with the 90mm fan, I think there would be issues with both the current generated and room for the battery. Of course there are a lot of factors to consider, so thank you for sharing your insight.
Jim i hope you complete you goals and never back down
Thanks!
I fly foam warbirds and still don’t know a lot about the outrunner motors, but I feel that the KV on the new motor was lower, thus, your RPM are going to be lower and create lower thrust. I wonder if you could’ve gotten a bigger motor with a higher KV, if it would’ve given you the extra thrust that you were looking for. Either way, I love the data!
Lower Kv usually means more power. How it's harnessed makes all the difference. With prop powered models you can either add blades or a higher pitch blade. You could also use a bigger diameter prop if the clearance is there, which it usually isn't. With an EDF you add more blades or a different pitch blade. Cheap EDFs may only have 4 blades. More powerful ones have 12. You can also use an INRUNNER vs an OUTRUNNER. Inrunners can usually spin at faster RPMs and have a higher FAN SWEPT AREA (FSA). Inrunners are smaller in diameter. The extra area that would be the outrunner motor is now occupied by the inrunners longer fan blades. Extra FSA creates more thrust. But you need the extra power of a lower Kv motor to turn a larger area (FSA) fan that also has more blades, and probably higher pitch blades. In this case the FW 3668-1960Kv EDF Motor is an inrunner and the larger diameter 12-blade 4068-KV1850 EDF is an outrunner.
Yes, somehow in my head I thought I was getting one with a higher kv rating, so even when I was recording the video, I had that in my head. But, it's not a big difference, and having a bit more torque, which goes with the larger diameter, it would be better able to keep the rpm going when under load. At the end of the day, however, it didn't perform quite as well as the original.
Awesome video! Very clear how-to on this swap.
Much appreciated!
I have a static test stand that I use to measure fan/motor thrust output. It sure comes in handy !
That's good, but the air duct in the plane is also part of the equation. The fan builds up pressure in the duct and the nozzles 'squirt' it out. The velocity of it coming out is going to affect the thrust at various air speeds.
Hey i hope your TH-cam channel turns out being good and if you ever become famous i will still believe in you Jim♥
Thanks Isaiah. I don't expect to ever being anything close to famous, but I do hope to help a lot of people along the way while I enjoy doing it all myself!
This is an excellent explanation. I'm getting back into RC after many years, and I was at the time mostly flying 3 channels without airlerons. This is helpful in understanding adverse yaw and downwards movement that I'm not used to and never understood
Glad it was helpful!
NICE WORK 👍
Thanks! This part of the job feels really good. The video comparing the two different ducted fans is now up.
But I don't have a fancy radio to use as a "instructor" radio. The old days "cord" was better......
You can use a lot of current radios with a cable connecting the two. A cheap one is Flysky. The main thing is that the two radio transmitters need to be compatible. Not necessarily the same brand, but using the same type of system.
Thanks, I didn't know how to configure my ESC from the transmitter and you saved my life.
Great to hear!
Two items you did not mention: First, the glow plug, which sometimes needs to be replaced. Last ones I bought were 10 USD each. Not cheap! Also, you have to have a battery to clip onto the glow plug when starting. Second, safety: Starting and adjusting a nitro engine requires you to be close to the prop. This is not the case with electric. I feel much safer with the electrics, especially with the throttle cut feature that is available. I used to bad-mouth electric airplanes. Then about 5 years ago, I got one. Never flew nitro again.
Good and helpful points. Thanks for contributing.
Is your website down?
Yes it is, I'm working on getting it up again.
Jim I like your channel but I have to ask. If you knew on takeoff that there was a problem why fly for 3 minutes and then crash. You keep saying you have to stop crashing so much but you had plenty of time to land the plane in the 3 minutes why not land and try to figure out why it is lacking power? This one didn’t sneak up on ya. You just didn’t listen to the plane begging for help.
You are absolutely right.
Warbirds are not going to dead stick well, if it was a Cub or Cessna you would have just had a hard landing. Having a bit of bad luck lately Jim. Will watch with interest, thanks for your video.
Especially 6S EDF warbirds!
Wow. Finally someone shows the whole process to setting up a plane. My question is, is there a way to set up a template (generic plane with flaps) with your preferred settings and switch selections, bind to a specific plane, tweek the settings, change the name, and still retain the original generic plane for future planes? Do you have to save the original on the memory chip and reload it each time?
Actually, there is. Under "System Setup" go to "Model Select." Where "Create New Model" is displayed at the top, highlight that, then use the scroll wheel to get "Model Copy." You can then select the model that you want to copy.
put fluorescent wingtips on it orange fluorescent wingtips and then you can tell she better and don't dump them it in😂😂😂😂😂😂😂
Now that's an idea! :-)
Easy hand launch.
When done right...
A internal combustion engine power output is effected by a number of things such as barometric pressure, temperature, humidity etc. Most HP ratings are based on perfect conditions which almost never occur. While certain extreme conditions can effect electric motors generally under normal conditions they can and will put out there max rated HP. This is the reason for the power disparity. A interesting exercise that shows this is portable generators most of which have IC engines with 2 to 3 times the HP ratings of the output of the generator.
Good thought. And with both the generators and electric motors, there is a matter of efficiency. Input power drawn is always greater than the output.
super helpful...just needed that dsm paramater (to bind).. mine was on auto and it wasn't working but your value does. thanks much
Great to hear!
Oh man that is so sad! Interesting forensic analysis and I hope you can rebuild and demonstrate again. I'm a relatively newby to RC and soaking up as much knowledge and experience from others as I can.
Thanks, we will get it going again!
That is a win. Likely try this out sometime on a similar craft.
Now that we know what works we can make a more professional looking one!
Thanks Jim, Well explained and easy to understand. It helps with this "hobby".
Glad that it has been a help.
Thanks, Jim. When using NX 7e and have selected a plane which was already flown , do I have to rebind it if I change the rate and expo or throttle cut? I'm thinking, no.
No, you don't have to bind it again. You only need to do that if you replace the receiver.
information in many cases, a sudden loss of control is a result of servo glitching. servos glitch when there is 'too much' vibration. the most common source of excess vibration is at the prop/motor. when there is excess vibration from the prop there is usually also excess prop noise. in this case, however, prop noise was not excessive. so, idk if there was something else that caused glitching. servos can glitch because there is an electro-mechanical position sensor inside them. that is, a center-tapped pot. potentiometer.
I'm curious as to what is causing you to focus on servo glitching.
It's very obvious to me that the tree has positioned itself in front of your aircraft initiating the crash, those darn trees, if the trees will co-operate you will have more success :)
Yes, and a friend of mine at the club just landed his plane in one yesterday. Highly experienced, former pattern flying competitor, but the motor failed, and he was just a bit too far from the field for his altitude. But you would think the tree would understand, and just sway to the side for him! :-)
very nice job 👍
Pretty basic, but used it again today, and it works great!
Very Professional ! Nice job Jim ! ❤😉🙃😎 NZ
Thanks 👍
That went perfect Jim, I would suggest that's a win.
Yes, and a few losses pointed us to the win! I actually forgot about my first attempt as I was doing the video. The first one was a chunk of chipboard that I fastened the wheels to. It also went nowhere!
A lot of work for something that is easy to hand launch but then I guess experimenting is part of the fun. If an overhead hand launch doesn't work try a discus type launch, I have used this on some planes that have a body too wide to grip comfortably.
Yes, other guys at the club hand launch them, but every time I've had someone do it for me, it has hit the ground. Either I have the throttle too high for the angle they throw it, or whatever, but the crade totally eliminates any guesswork. I might mention, I also have a larger motor in mine than the original.
been flying for about 50 years had my share of crashes,,but in your case lm more inclined to think the rudder pulled loose not enough glue on hinges
Certainly a hinge failed somewhere. And the rudder is a possibility.
sorry to see that jim, i had one of these some years ago and it flew great, i did however glue the dive brakes in position as they were a bloody nightmare and looked "not fit for purpose" best of luck if you do rebuild it, although they are quite cheap models, i would just buy a new airframe. cheers
Thanks. Part of my DNA is to fix things, so I'm going to have a go at working with what I've got.
I have one of these VQ Dauntlass although so far it has only had one flight. While it flew well I did find it had a tendency to drop the right wing when levelled out after a turn, easily recovered but rather unexpected when it happened. I was using a new engine that was unhappy at lower power settings needing the low speed needle leaned out so this may have had an effect. Got it down OK although the landing was probably a bit faster than ideal. No chance to est out dive brakes or the flap.
Prior to the crash it was flying great. No complaints. I was purposefully keeping the airspeed up, knowing that many warbirds have nasty stall characteristics.
Bummer brother. It doesn't seem like a VQ problem though? Or was it?
Ultimately I have to take the blame. When you build a plane, you need to make sure everything is secure. Apparently something wasn't. I still don't know what it was, but something must have come loose. Having said that, I certainly wouldn't trust any of the gluing that they have done on control surfaces. I actually didn't before, but I forgot to pin all of the hinges as I originally planned.
@@RCJim It happens, Jim. I hope your rebuild goes well.
Well, thats a hard day at the office Jim. The most important thing is that you seem to get enjoyment out off the hobby and that's the most important thing.
Yes, I prefer not to crash them, and I hope to continue to get better at that, but I also enjoy restoring something that others figure is a write-off. A bit like a spiritual journey...
Hi Jim, sorry about the crash. Unfortunately it happens to us all. If i can be so bold, id like to make a suggestion. I used this ca on hinges for many years. I now use a product called Super Phatic by Deluxe Products out of the U.K. The glue is readily available. The big advantage is that you can coat the hinge itself and also add a few drops into the hinge slots. This stuff soaks in much better than ca since it gives you a bit of time to adjust things around. A can assure you, you'll never pull that hinge out unless you take the wood with it. Give it a try sometime. I think you'll like it. Best of luck.
Thanks for the tip. I think you are right about the CA. Often it doesn't penetrate very far into the hinge.
WOW sorry about your crash , I would definitely rebuild and get rid of the dive brakes like you said maybe just flaps to slow you down- I think a good couple weeks you could be flying that thing around again
Thanks for the encouragement - it's needed in a time like this!
Nice looking bird Jim she’s a good flyer nice job 👍
Flew great the first time. Continued to fly great the second time until something went wrong! th-cam.com/video/eXZpESvWqnU/w-d-xo.html
VQ builds some great, tough ARF's.
No so sure about that.... th-cam.com/video/eXZpESvWqnU/w-d-xo.html
Awesome to see the progress and maiden flight.
Yes, that was a good feeling.
Oh Jim, I'm so sorry. I've been watching your build while i'm building mine. Looks like it flew nicely prior to the mishap. Keep your chin up, you can rebuild it!
Yes, I think the flight characteristics of the plane are great. Just a few too many things that can go wrong, given the complexity of this build. I'll make it much more simple when I fix it.
I hate to say it to you jim, especially when you have crashed such a nice model. I’ve been watching you almost since you started on you tube. I have to say your flying models way beyond your skill level . You need to get some instruction. Anybody who still crashes trainers after 20 years of flying obviously needs help. You said in one of your videos you way beyond trainer aircraft I actually don’t think you are. Let’s face it you have crashed almost every model you have. Your own son according to you even said same thing. Don’t get me wrong I love watching you put them back together but it must be soul destroying. Do yourself a favour and get some instruction. I’ve been been flying since 1978 I stopped in 2004 came back to the about 2/3 years ago. Jim your even using safe and as3x. Get yourself some help. Bob.
That's not very nice at all..
I think you need to show some respect.
@@FarmerFpv he said using safe and as3x so safe does make it easier to fly and they both act as helpers to fly.
Show some respect? WTH you on about?
First of all you need to read what I said. Safe and as3x are aids so wth you on about? Don’t matter what size the model is.
I'm confused by the use of the word "build". This is a ARF, correct?
Yes, it is considered an "ARF." Some ARFs just require a bit of assembly. This one required dozens of hours of work. Maybe that doesn't qualify as a "build", but I thought it was a reasonably accurate description.
nonostante il crasc hai sempre il sorriso sul tuo viso questo e' positivo forsa Jim ce la puoi fare
Grazie per l'incoraggiamento Penso che potrò farlo volare di nuovo.
I have been watching your build Jim, great effort. I thought the power was ok. Anyway, congratulations.
Yes, the power was fine. My general ballpark is to have a 1:1 ratio, which gives a plane real punch, but this one still performed better than scale.