Trung,
Looks like Jim, Ollie and Speed have answered your questions. I am going to jump in on the T-34, Jim is correct, it must stay as a tri-cycle landing gear. If you like to put retracts in it, that is fine but again it must be a tri-cycle. Everyone that has raced the T-34s this year have had all fixed landing gears. Ollie is correct and almost all Bronze class is all T34s.

Glad you are getting involved with our races and looking forward to talking to you at the Trashman Classic Race.

The exact location of the rules is http://www.sacramento-rc-flyers.org/...birdrules.html

Thanks Ollie, Jim and Speed for helping out!