I was having trouble figuring out why my tekin redline 6.5 (6800kv) was only hitting 40000rpm in smart-sense mode on 8.4v so I tried sensored only mode and it hits about 52000rpm with cheat at 15%. Is this a problem with the firmware (I'm on 1.25) a characteristic of the redline motors (not running sensorless or something) or an issue specific to my esc?

I have the same issue with my redline 17.5. It only runs fast when i unplug the sensor cable

Interesting. I didn't test it full sensorless mode. I'll have to try that and see what happens.

I just emailed tekin on the problem. We'll see what they say

I'm going to test some of my other sensored motors on it this week and see if they have the same issue. If they do I know it's caused by my esc. Are you using an mmpro too or other esc?

this is my setup: MMpro, Turnigy 5200 30C 2-cell lipo, tekin redline 17.5, futaba s9452 servo

It did the same thing with an lrp motor so I'm pretty sure
it's the esc causing it. Which firmware are you using? I'm on 1.25. I'm going to see if another version of firmware will work. I'm going to email castle tonight too.

I am also using 1.25