View Single Post
  #7  
Old 14-12-2013
beale's Avatar
beale beale is offline
Senior Member
 
Join Date: Apr 2011
Posts: 371
Default

2200kv x 7.4v = 16,280 RPM low kv generally for 4 cell 14.8v
4000kv x 7.4v = 29,600 RPM
Nitro engines as a guide run at around 30,000+RPM
Reply With Quote