Rpm vs mph???

[superek4]

I hv this 2 motors n want to know what's the diff between these 2 set up?

I am using 6s lipo n on a CRT.

1.neu-1515/3d with 16/50spur speed 37mph, 30192 rpm

2.medusa 1600kv with 13/50spur speed 35.41mph, 35520 rpm

i am confused do we measure by speed or rpm? so which setup is faster? less rpm means less torque?

[brushlessboy16]

Rpm directly corrolates to speed.but these two cannot be directly compared because they use different kv motors and differenent gearings.

Torque is based on Kt or oz/in per amp of power. In most cases Kt and Kv are directly related..


*in most cases*
-A motor with a higher Kv will have a lower kt

-a motor with a lower kv will have a higher kt.


So running a lower kv motor (with a higher kt) on higher voltage results in a torqueier power system.


hope this helped

[superek4]

Hey thx now I know:)

[zeropointbug]

Originally Posted by brushlessboy16

So running a lower kv motor (with a higher kt) on higher voltage results in a torqueier power system.

I wouldn't say that, a lower kv. motor will draw less current to do the same thing (torque), a higher kv. motor WILL draw more current to do the same thing as well. They will both be equally powerful and same torque levels for a given max rpm setup.(well, the higher voltage will be SLIGHTLY more powerful ) The only difference really is running temps, they will always be lower when you increase voltage and lower the kv. value.