Phil,

for the T10, I think you might find the E-Flite's to be a little large and heavy. The plane wants to weigh no more than 30 oz - 26 would be ideal. The GP 10 size mechanicals are what I had in mind.

For the T20, the E-Flites are perfect. They are really made for 3-4 lb models, 20-32 size engines to my mind. An electric trike 10 size set would be great to have for the smaller scale and sport models.

Attached is a photo of the GP 10 size gear in a 40" span Deception wing. Gives you an idea of the size - they are quite light and could be operated with an HS-65MG or similar (0.6 oz servo). Those are 1.75" Dave Brown Lite Flite wheels - perfect for an electric T10 too.

David.