Originally Posted by
zrxrxr
All turn motors have a KV rating also, it just depends on how a company wants to label their motors.
Let me explain:
Castle, and most 8th scale motors are usually labeled as KV only. I think only speed-passion uses a turn denomination for their 8th scale stuff.
The KV-Turn is standard across companies.
The only one I know by heart is 17.5 turn, which is 2200kv. No matter which 17.5 turn motor you get, it will be 2200kv, and vise versa.
Hope that helped.
All 17.5 motors are not 2200, and that includes roar approved 17.5's and kv and turn are not as you noted 'vise versa' at any rating.
All 17.5 turn motors do have 17.5 turns (the wires inside the can) many other factors come into play to determine the kv rating. Manufacturers usually provide this figure.
Kv ratings and torque have more to do with each other in a visa versa sort of way; as kv goes up torque goes down and visa versa, kv down torque goes up.