Piper Cub J3 Trainer engine .40 question
 

Hello to all. the Question is.
I Have Just Baught a .40 Supertigre GS-40 Dual BB Ringed W/ Silent Muffler engine. and was wondering what you might think. as for the prop for it the list is this. top flite 10x6 power point propeller, other suggested prop size is .
9x7, 9x8, 10x5, 10x6, 10x7, 11x4, 11x5, breakin: 10x6 I dont know what would work best with this engine the wing span is 71" if that helps any. would like your input... the company said . I should go with what the plane plans call for . But I dont have the plans for this plane....... the plane frame is Balsa wood

John

RE: Piper Cub J3 Trainer engine .40 question
 

Engine will be fine with the 10 x 6 for break in and flying purpose. I do not know if is the adequate engine for your kit as you do not describe the power requirements, JR Piper cubs are not trainers and they could be extended or clipped wings.

Best regards:

Alfredo.

RE: Piper Cub J3 Trainer engine .40 question
 

Hi John:

I have a Goldberg J3 Cub that is 71 inches in wing span and I had it powered by a KB .40, and now with a Saito 45 Four Stroke. I went to the Saito because of the nice sound the 4 stroke produces. The 40 size engine should be more than adequate for the Cub. Break it in kind of rich and the 10X6 is a perfect prop for the .40 sized engines. Enjoy the Cub, they are a joy to fly.

RE: Piper Cub J3 Trainer engine .40 question
 

thanks for the info guys

John

RE: Piper Cub J3 Trainer engine .40 question
 

well. I Just got off the phone with Sig mfg company. what a great Bunch of people. I also found out that they are only 3hrs from my Home. here in Iowa


John