Gearing for Brushless Revo/E-maxx 9XL

[jhautz]

Just wondering if anyone has any experience with running a Feigao 9XL in an e-maxx or brushless revo using an e-maxx transmision. (Diff gearing is the same for revo and emaxx) I just got a 9XL and a Quark 125MonsterPro ESC and I'm looking for advice eon gearing. The only spur options I have are 66T and 70T. (I'm using the robinson racing slipper).

I am planning on starting with a 24T pinion and testing it out. That should be pretty conservative. I also have a 26T. Do you think going a high as 29 would be to much? I plan on running in second gear most of the time.

BTW I'm using 5S Lipo for the batteries.