vmsguy

Hello all,

I just received as a gift, a partially completed kit.

The specifics: (From GP's website)

Piper J-3 Cub 40
Stock Number: GPMA0160
Wingspan: Standard Wing: 76.5 in (1945 mm) Clipped Wing: 61.5 in (1560 mm)
Wing Area: Standard Wing: 820 in² (52.9 dm²) Clipped Wing: 653 in² (42.1 dm²)
Weight: 6.5-7.5 lb (2950-3400 g)
Length: 49 in (1245 mm)
Requires: 2-stroke .40-.60 cu in (6.5-10 cc) or 4-stroke .48-.70 cu in (8-11.5 cc); 4-channel radio; 2+ rolls MonoKote

The previous owner has completed the wing. (standard configuration) And got a good start on the fuselage.

Multiple questions.

1. Anyone build/fly this plane?
2. What would be a "real nice" motor/prop combo for it? I'll listen to both 2-stroke and 4-stroke recommendations.
3. Any tip/tricks with this plane???

I'm not looking to build an uber-accurate scale plane. I just want a nice flying, stand-off scale, airplane.

With regards to performance, I'm looking for something a bit better then scale. But no where near "wild-and-crazy".. It's a cub, it's not Mustang... I want to be able to tool around 1/2 throttle or so.. maybe goose it up to 3/4 to do a loop or climb.. Nothing too crazy...

jagnweiner

My Feedback: (1)

I've built and flown the GP .60 size Cub. I believe the .40 has a little different design. If you can afford a 4-stroke, go for it. Cubs beg to have a 4-stroke. Any .60 to .70 size 4stroke would be a good choice. The Magnum .70 would be good.

Since I haven't built the .40 size, I don't have a whole lot of tips. I would recommend waiting until the engine is in to finalize servo and radio placement. I glued my servo tray in the location on the plans, but ended up having to add a lot of nose weight to balance.

MinnFlyer

My Feedback: (4)

I also say a 70 4-stroke.

And if it's not too late, clip the wing!

Rodney

If all you want is scale type performance, even an LA .40 will do the job. We have become so used to overpowering our models that many have forgotten how to fly using a scale type power. True you will have more leeway using a larger motor but, you will learn to fly on the wing with the smaller motor.

Norm Nestie

It's a great plane, very good kit. I have flown mine for 4 or 5 years with a Saito .56 and feel it is the right amount of power for this plane . Prety sure i'm using an MAS 12x6 prop. Spent the few extra $$s and covered it in worldtex. When i feel like a nice relaxing flying session it fills the bill. Good luck with yours.

rc-sport

My Feedback: (12)

I had an OS 52 in mine and used a 12-5 prop. It was plenty.

sandal

One of my friends built one, and I have flown it several times. He had an OS FS-52S with APC 12x6 prop. I agree with rc-sport; the OS .52 was plenty. The plane was very nice, and I can't think of anything to modify. My friend built it with Solartex, but I think I would have used plastic film (Monokote or similar).

DavidAgar

My Feedback: (108)

I have flown one with an OS 70 4 stroke on it. The wing was clipped as per the plans and it was a great flyer, right up until the tree reached out and grabbed it. Good Luck, Dave