Official Nexa 1570mm (61.8") P-40 Warhawk

[rifleman_btx]

Crap i got to look, it's been a long time since I put those in

[Bellke]

Get yourself some metal eflite retracts, and save the headaches. That's what I did, and haven't had a single failure in 4 years of ownership.

Which ones did you get and which strut set?

[rifleman_btx]

This thread is full of crap!!!! Posts show retracts included but THEY ARE NOT!!!! EXTRA FOR RETRACTS AND THEY DONTS HAVE THE SCALE STRUTS SO NEXA P40 IS USELESS

They probably had them pulled because the nexa retract units were all plastic and could not hold the weight of the planes. I have the helcat, and had to replace the retracts after the 3rd landing. They folded right up and broke the plastic mechanisms. Get yourself some metal eflite retracts, and save the headaches. That's what I did, and haven't had a single failure in 4 years of ownership.

[aferree61]

This thread is full of crap!!!! Posts show retracts included but THEY ARE NOT!!!! EXTRA FOR RETRACTS AND THEY DONTS HAVE THE SCALE STRUTS SO NEXA P40 IS USELESS

[Apolonio]

PLEASE, need some help! Can someone tell me how you folks at Motion were able to fit a MAS 15x7 3-blade prop on this airplane using the GP10 motor as shown in Part 2 of the build video? The prop shaft adapter is WAY too short to accommodate the thickness of the prop hub. Best I can do is get a 14x7 to fit and that is only by not using the prop washer and still only having a few shaft threads...not enough threads to even go all the way through the nut. I'm not comfortable flying this beautiful bird without a better prop fit. Thanks!

I'm surprised no one from Motion RC has answered your question, this is a serious issue having too short of a propeller shaft shaft.

I'm having the same problem, and if you and I are having the same problem so will others. Prop hub is too short to accommodate the 25x7 3-blade with spinner back plate. What I'm doing is actually mounting the spinner plate directly to motor using the same motor propeller shaft adapter three holes. Only, I had too replace the three screws with longer ones. Now, the props back plate mounts directly to the motor assembly and will rotate as motor powers up.

Then, I shaved some material off the prop so the nut screws in further. The, the spinner nose mounts on with the three screws. This spinner nose locks the prop within the assembly, because the prop spinner back plate is directly mounted to prop adapter the motor now turns the prop with the spinner nose in place. I know, it's totally crazy but I had to figure out a way to keep the prop attached and turn with little stress. Although the prop nut is hardly connected, the spinner nose is keeping the prop pressed against the spinner back plate.

I'll post pictures of the fabricated prop setup soon, will maiden the P-40 soon hopefully within two weeks. I did order another propeller shaft and are hoping it's longer, so I'm waiting for it to arrive. If it's the same length, then I stick with my fabricated setup.

[pmisuinas]

So I'm curious what the wheel diameter is for this model. Nearly all the scale P-40 ARFs have undersized wheels, to be even close to scale the diameter should be 4" for this one--how close did they come?

[Skavage]

PLEASE, need some help! Can someone tell me how you folks at Motion were able to fit a MAS 15x7 3-blade prop on this airplane using the GP10 motor as shown in Part 2 of the build video? The prop shaft adapter is WAY too short to accommodate the thickness of the prop hub. Best I can do is get a 14x7 to fit and that is only by not using the prop washer and still only having a few shaft threads...not enough threads to even go all the way through the nut. I'm not comfortable flying this beautiful bird without a better prop fit. Thanks!

[rifleman_btx]

Yes, unfortunately they very much are.

[Mach351]

I went with the eflite rotating retracts on the hellcat because I had the same issue with collapse with that plane. Got the eflites and been happy ever since

thank you, sir.
found them on Horizon's website. in true Eflite / HH fashion, they are proud of those little buggers pricewise.

[rifleman_btx]

I went with the eflite rotating retracts on the hellcat because I had the same issue with collapse with that plane. Got the eflites and been happy ever since

[Mach351]

bought the Nexa P-40 last fall for a winter project and waited a month to have a day of calm wind to make the maiden flight.
finally put it in the air and thought i'd revive this thread by sharing some of my build. overall, the build was fun and i like the plane.

everything is packed nicely for shipping.

i'm currently using the power system for a Flightline 1.6m Spitfire - 5055-390kv motor, 80 amp Hobbywing ESC and 16x10 4-blade prop. (the which-of-why for this is it was already on-hand)
this P-40 is not super-fast on this setup, but it is adequate.
thought about using the 18x12 3-blade prop, but the blade tips were kinda close to the ground when then tail is up and the plane is level. i didn't want to risk a prop strike in the first flights. and the nose cone for the Spitfire aligns nicely with the P-40 cowl so it aesthetically looks way better than the prop for the Corsair.

no issues with the installation or performance of the Hitec servos recommended by Motion RC.

went a little different direction from James's video by mounting the motor directly to the firewall without using the wood stand-off.
in doing this, had to trim 10mm off the back of the cowl with a Dremel and sand a bit off the crossmember on the bottom of the fuselage to get the front of the cowl to line up with the front of the motor.
(probably not the recommended method for those uncomfortable fabricating stuff)

the cowl is actually a really nice piece made from fiberglass, not molded plastic.

everything else went together easily.
though if i had one thing to do over, it would be to cut a hole in the flap servo mounts for the servo horn to come out of the bottom of the plane so that a straight pushrod can be used in the same manner as the ailerons. this would have been much easier than trying to figure out the bends to make the pushrod come out of the bottom of the wing.

the maiden flight went okay, except i had the CG a little too far aft and the plane porpoised up a little a few times. (used Admiral 4000 mah batts on the first flights)
for the second flight, moved the battery forward and everything went well in the air - the landing approach may have been a little too slow and the plane set down a little hard on the airfield... aaand both retracts collapsed.
so if you have seen Ron White's skit on getting tires put on his van at Sears... that's kinda where i was at for a moment.

yeah, it is a heavy plane for solid struts and weak retracts. is it a grass airstrip?... yes, well manicured grass. and i have never seen this happen before. once in a while an EDF will pull a gear mount away from the airframe, but a prop plane collapsing both retracts is a first.
wouldn't it be nice to have struts with a spring dampener... but wait, the Freewing F4U Corsair has rotating gear with spring dampeners on the strut... would a crossfit even be possible... on our next suspenseful episode of ...

[Skavage]

Hi James,

I'm a little late to the show here but having just bought this plane today I have a couple questions if I may.

First, what size is the tri-blade spinner that comes with the plane? Second, how are those Hitec 485HB servos holding up? I'm considering whether to put some digital metal geared servos in but I'm still on the fence a bit. Having had it for nearly a year now do you have any suggested modifications or such that should be considered? And lastly, if you don't mind can you tell me what brand your blue airplane stand/cradle is in the build pics? I have a DIY PVC one but I'd like something I can adjust for various size projects I've got going on.

Thanks so much for your thread here as it went a long way towards helping me make the decision to buy. Can't wait to put this one in the air!

[Bob Crawford]

I bought the Nexa P-40 and I am not very happy with it. The covering is not fuel proof and it is a very low temp film. It melts at a very low temp. The glued joints were not very good. I had to go over a lot of the joints and re glue them. The fuel tank would not fit. The hatch would be up over 1/2 inch. It looks good but I felt the quality was very poor.

[Chalredline1]

Well my maiden went great. Plane flew beautifully however there seems to be an issue with the right side landing gear. On 3 successive flights the gear collapses on touchdown. We are talking about it doing it on a nice soft landing. Upon inspection I was able to move the gear up and down by hand. I can cycle the gear and it does appear to lock in the down position. Upon the next take off it stays locked. I tried cycling the gear in the air as well as leaving it down but again on touchdown it will collapse. This only happens with the right side gear. Any suggestions?

[Chalredline1]

Thanks for posting the videos. I notice the aileron throws you start with are much greater than what the manual states. It states 6mm. I’m thinking that is going to be too little. Any thoughts on that? Thanks

[James]

Flight video is live:

[James]

I am absolutely getting this P40 or the Nexa P47 within a couple weeks. But, having an incredibly hard time deciding between the two. I'll definitely be going gas and using the NGH 17cc. Decisions, decisions.....

I hope to join you on the 17cc front. I think my next Balsa bird will be the Nexa Hellcat on that engine.

[JamesonC]

I am absolutely getting this P40 or the Nexa P47 within a couple weeks. But, having an incredibly hard time deciding between the two. I'll definitely be going gas and using the NGH 17cc. Decisions, decisions.....

[James]

Just an update, 2 of our 3 video series on this P-40 are now live. Part 1 is the Unboxing and Spec and Part 2 is the step by step assembly

[Chalredline1]

Thanks. Looking forward to the assembly video.