Discussion
A40-10s 750kv on a protos 500?
Yep, I'm probably crazy for asking this, but will this work on a protos 500?
The stock scorpion 3026-880 comes down really hot and I'm only doing mild sport flying. I'm getting 6 minute flights with an ending voltage of 22.5v on 6s 2650mah lipos, so no problems there.
My concern is the maximum RPM rating for the a40-10s. It says 16,000 rpm. If I do the math 22.2v * 750kv = 16,650 rpm which is not bad, but 25.2v * 750kv = 18,900 rpm. Waaay over that 16k rpm mark.
So what to do? Use a bigger pinion? The protos has a 93 tooth main gear btw.
Off to find a head speed calc.