[glassdoctor]

Second the plastic spur gear... make sure you get one with your other stuff. Mike has them... I would buy two just to have a spare. You will save a lot of $$ on chewed pinions, and the kyosho gear is only 5 bucks.

Which kv motor are you getting?

For the 1700kv I would suggest 12-14 gears.

The 2200kv... 9-11 gears