Hi Wings,

I'm sure your Mag91 is an excellent motor for the Chipmunk. Even if another Chip is faster, remember that the Chipmunk is not a patricularly fast plane but very agile. It's perfect for a good 4 stroke.

Look at www.artscholl.com for some info on the original one and some videos. There is also a huge amount of litterature available on Art.

Ari