RC-Monster Forums - View Single Post - Fantom Ion 17.5 Turn Brushless on 4s Lipo

MetalMan · 11.17.2009, 09:56 PM

I have mine geared a bit higher, and even on Smart Sense it would cog in the mid-range pretty badly if given enough throttle quick enough. Maybe it's because it has switched over to sensorless at that point and there's not enough back-EMF with the load?
In sensored only mode there is no cogging at all but the motor ran hotter... gotta love dynamic timing.

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MetalMan RC-Monster Mod Offline Posts: 5,297 Join Date: Mar 2005 Location: SoCal	11.17.2009, 09:56 PM I have mine geared a bit higher, and even on Smart Sense it would cog in the mid-range pretty badly if given enough throttle quick enough. Maybe it's because it has switched over to sensorless at that point and there's not enough back-EMF with the load? In sensored only mode there is no cogging at all but the motor ran hotter... gotta love dynamic timing. SH Z-Car, Custom Crawler, 8s Savage, 12s XTM XLB 1/7 buggy, 4wd 4-link rear/IFS Pro4 truck, Custom Hyper 10 Short Course, Belt-Drive Mammoth ST 1/8 truggy, 4s 17.5 MM Pro HPI Blitz