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TopRC giant P-47 Thunderbolt ARF

Old 03-21-2022, 01:16 PM
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Has anyone sorted the Tru-turn A-Style Prop Hub and backplate details (diameter, backplate, etc) for the UMS 5-150 to share?

Don’t have access to engine and would like to get on order

Cheers
Old 03-21-2022, 08:14 PM
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Originally Posted by PaulD
So has anybody come up with a good solution for the interference between the ailerons and flaps when the flaps are down?
I had the same interference issue with the flaps and ailerons and came up with one way to address it. I taped a cut line and the cut the "end cap" off the aileron with a jeweler's saw. Then I sanded both mating pieces flat and removed about .080" off the length and epoxied the cap back on. With some touch up sanding and flat white paint, I think it'll come out pretty good. May have to re-do the rivet marks..


definite interference

End to be cut off

inside aileron

Fit after shortening aileron

Old 03-21-2022, 08:16 PM
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Doubt anyone notices the rivet line being slightly off.

Nice fix!
Old 03-21-2022, 10:03 PM
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Thanks! I did redo the rivets with an 1/8" ball end mill and the dremel before the next coat of paint, lol. I'll get another pic when complete. Have to admit, it's amazing the maker never found the hitch in those parts..
Old 03-22-2022, 03:40 AM
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Chinese ARF.

the mounting blocks in my H9 mustang stabs were missing in action..


I fixed it, but not happy with the skin repair so more work to do on it.

Its the nature of it. Irritating as it is...

Last edited by Txmustangflyer; 03-22-2022 at 03:43 AM.
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Old 03-22-2022, 12:06 PM
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I guess anything can get messed up, haha.

Final result of the aileron surgery. Now the left wing..


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Old 03-25-2022, 12:44 AM
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Hello
I have the same problem with the flaps and the ailerons.
I think your solution is brilliant. I will do the same.
Thanks for your great report.

Greetings Werner
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Old 03-25-2022, 08:11 AM
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Originally Posted by Colt4570
I guess anything can get messed up, haha.

Final result of the aileron surgery. Now the left wing..

End result looks great!

managed to slot my hinge holes enough I could move the flap and aileron away from each other. Not perfect but effective enough.

PaulD
Old 03-25-2022, 10:16 PM
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Thanks Paul, I like your idea as well, didn't even think of that!

Originally Posted by PaulD
End result looks great!

managed to slot my hinge holes enough I could move the flap and aileron away from each other. Not perfect but effective enough.

PaulD
Old 03-25-2022, 10:25 PM
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Thanks Werner. I hope it helps. That's the great thing about these posts, where we can give each other some ideas!



Originally Posted by wescho
Hello
I have the same problem with the flaps and the ailerons.
I think your solution is brilliant. I will do the same.
Thanks for your great report.

Greetings Werner
Old 03-28-2022, 03:51 PM
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What's the max deflection/angle you guys are using for the landing flaps? Trying to keep the servo arm as short as poss without short changing the flap travel and servo strength. With 1" arms I'm able to get about 50 deg. Thanks.
Old 03-28-2022, 03:52 PM
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50 would be a little low...

Old 03-28-2022, 05:19 PM
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I'll probably just go with 1.250" then. With that length I can get 65 to the chord or roughly 70 to the bottom of the wing. I can always go shorter later, but can't make the arms longer once they're shortened. Thanks for the help.
Old 03-28-2022, 09:26 PM
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This was another contact spot I ran into with the flaps (on both wings). A few photos to show the fix. The top gets slotted the the end plate is shifted over and glued in the new location. Then the excess edge is reshaped and touched up.







Old 03-30-2022, 02:14 PM
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Has anyone flown one yet?
Old 04-01-2022, 08:44 AM
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Just got mine about a month ago, so still building. Someone must have flown one because I read a comment recently that the factory suggested CG was on the money. Sure would love to see a video of a flight though..
Old 04-13-2022, 09:38 PM
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Saw some posts today on the TopRC Model Facebook page, where 2 people posted they recently maidened there P47s. One put up a video and the plane flew great. Both said they needed little or no trim and apparently the factory CG is good! So, good news.
Old 04-13-2022, 09:47 PM
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Got the gear and doors installed on the right wing.
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Old 04-13-2022, 09:51 PM
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I take it you got your flap and aileron issues nailed down?
Old 04-14-2022, 07:06 AM
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Ran into a major problem with my TopRC P-47.
When I cycle the gear up or down I get MASSIVE interference with the control surfaces; the ailerons, flaps, elevator, and rudder begin to move erratically totally disconnected from the transmitter.
I'm using a Spektrum IX12 transmitter and a Powersafe 12 channel receiver.
I have no idea what the problem could be. The controls work fine, up until the gear is activated.
I did find one thing while trying to find the problem, and that is it is not as massive when I disconnect the tailwheel retract; but I am still getting movement on all the surfaces.
Anyone know what is up or what to do to fix this; is anyone else using Spektrum equipment on their bird?
Old 04-14-2022, 08:13 AM
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Try a different reciever. See if it does the same thing.
I fly Frsky equipment, but if its happening to all reciever channels, the reciever is a good place to start. Is your throttle servo twitching too?
If different reciever doesn't resolve, then you basically got some dirty rf coming off of something. Typically, when this happens, its seen from the engine ignition, but there can be other causes. Do you have an optical kill on the engine?

Last edited by Txmustangflyer; 04-14-2022 at 08:18 AM.
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Old 04-15-2022, 09:15 AM
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Originally Posted by Txmustangflyer
I take it you got your flap and aileron issues nailed down?
For all intents and purposes. I would say .100" removed from the aileron length will get clearance on all but full aileron deflection of around 35 deg. The upside to that is, there is probably something very wrong happening if your deploying the flaps during a high rate roll, lol. If the flaps are already deployed, you can use all the aileron deflection you need to.
Old 04-15-2022, 09:19 AM
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Sorry Mike, I don't use Spektrum..

I was wondering if anyone was able to mount the gear cover that is attached to the fuse without the hinge showing. If so, can tell me what hinges you used and maybe post a photo of the install, thanks!

Last edited by Colt4570; 04-15-2022 at 09:22 AM.
Old 04-15-2022, 12:37 PM
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Something like what Nir did on his.
He told me he mounted some wood to the inside of the fuselage and then cut thru, mounting it like an elevator almost.
Sorry no pics posted of the inside of the fuse.



Old 04-15-2022, 01:59 PM
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Found a video posted 2 days ago. Yea. It looks like a good combo with a usm 5-125


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