i know i could look it up but wondering about max engine size for 850 sq "

4 stroke- 1.8 cu.in
2 stroke- 1.4 cu.in.

http://www.sacramento-rc-flyers.org/...on%204%203.pdf

Yer welcome

ok thanks. i am going to stick a moki 2.1 on a H9 miss america and just wanted to know if could race if ever wanted too. looks like a no lol. have to stick to club racing.