Question for Castle Reps or anyone who may know ? - RC-Monster Forums

snellemin · 11:31 AM

You will always have that startup cogging with those roar type motors trying to run sensorless. You can reduce that effect with gearing and startup power, but to me that just sucks as you can't get the full potential out of the motor. The 4 pole sensored motors work just fine in sensorless.

ta_man · 01.22.2012, 09:12 AM

Quote:

Originally Posted by snellemin

You will always have that startup cogging with those roar type motors trying to run sensorless. You can reduce that effect with gearing and startup power, but to me that just sucks as you can't get the full potential out of the motor. The 4 pole sensored motors work just fine in sensorless.

Tech guy I knew a long time ago said "Generalizations are never true."

I think it depends on the motor. I ran a Novak 8.5 (2 pole slotted) motor on an original Castle sidewinder for a while in a 2WD off-road truck and I thought it ran better than when I was using it with a sensored ESC.

snellemin · 01.22.2012, 10:23 AM

Quote:

Originally Posted by ta_man

Tech guy I knew a long time ago said "Generalizations are never true."

I think it depends on the motor. I ran a Novak 8.5 (2 pole slotted) motor on an original Castle sidewinder for a while in a 2WD off-road truck and I thought it ran better than when I was using it with a sensored ESC.

What rotor where you using in that 8.5T motor?

I got around the cogging with a 12.5mm rotor and some more voltage with my 2.5T motors. The LRP with 14mm rotor is a hard one to start up in sensorless.

ta_man · 01.22.2012, 10:29 PM

Quote:

Originally Posted by snellemin

What rotor where you using in that 8.5T motor?

I got around the cogging with a 12.5mm rotor and some more voltage with my 2.5T motors. The LRP with 14mm rotor is a hard one to start up in sensorless.

IIRC, standard 12.3 rotor.