Hi Craig,

If you do fancy a Piper Cub, and  a really good build, Then why not try the Flair version..Its much easier to fly than  a true scale job, and is available either with built up, or foam wings. It's a perfectly practical trainer with a 40 ic engine. I finished mine in american wartime colours, complete with black and white invasion stripes. It's miles away from true scale, but looks great in the air

ernie

Re twinstar brushed on a 3s lipo, I converted mine using a 3200 mah 3s and just needed a bit ot weight in the nose to make it balance.

Much better performance but it kept throwing the Gunther props, so I bought some prop adaptors and fitted those with some 5 x 3 props. Again great performance but one motor only lasted about 10 flights before it gave up.

Great flyers though so if you are going down this route, either look at a brushless up grade or speak with Puffin Models about the new Mig Brushed motors specifically for 3s lipo's.