outrunner for Revo on 4s ?

[BL-Power]

A 2200kv is spinning too fast on 4s Lipo,it is good for a 2s Setup. In general, you shouldn't take cheapo outrunners above 15000rpm and the better ones (AXI....) above 20000rpm. So look for a 1000kv outrunner on 4s Lipo and use largest pinion and the smallest spur gear you can find.