Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Ah ok thank you man, im probaly going to go with either 1730kv with 19 tooth pinion Or 1480 Kv with 22 tooth pinion
Switching speed is not necessarily the bottleneck.The Max6/Max5 manual does state the 1,500kv limit is maxed on a 5892 sized motor, which I find odd given I thought it would be related to switching speed between phases. That must be related to amp draw as well, so I think you are fine given the stock electronics come with a 2050kv 4074.
2050kv at 24v = 49,250 RPM
Under load even fully charged 6S by the time it reaches the motor the voltage will certainly be lower. Let’s say 22v so 45,150 RPM for a 2050.
Using 22v just for a rough idea of what 6S RPM might max out at for different KV ratings.
2050kv=45,150
1720kv=37,840
1650kv=36,300
1500kv=33,000
1250kv=27,500
1000kv=22,000
800kv=17,600
I don’t know if this is anywhere close to reality or what the effect of a larger volume motor is on the speed the ESC can switch, but this is why you need to gear up with a lower KV motor, because that literally means that motor spins slower at the same voltage. You get more torque but at the cost of RPM.
Weight is a huge determining factor here. When you upgrade a stock truck and add weight to it, especially rotating mass from the wheels and tires to the motor itself and everything in between, you need more torque to move it without overheating and must go lower KV or lower gearing to compensate.
Register and gain access to Discussions, Reviews, Tech Tips, How to Articles, and much more - on the largest Arrma RC community for RC enthusiasts that covers all aspects of the Arrma-RC brand!
Register Today It's free! This box will disappear once registered!