Beginner Question Thread! 2023 Edition

[yoyotinker]

@poastoast

I’m on 100D #7 but I’ve yet to kill any due to breaking any erpm limits, over voltages, things like that
(I ran lipos for about half of them) still very happy with performance

@jaykup

@Cyanoacrylate

Whats a reasonable max erpm for a stormcore 60d+? Would 245kv motors (from radium) @12s for an unloaded max erpm of ~75k be pushing it too much?

@YeetMeat

If memory serves correctly the 60d+ are based off of 4.xx hardware, so the max ERPM you can achieve (or stay below) is 60 or 65k? I keep mine around 50k to be safe.

@frame

no, 60d+ is v6 hardware

The VESC 4 has 2 battery shunts, a DRV8302 gate driver and at the time of it’s release, unoptimized firmware with issues.

The VESC 6 design has 3 phase shunts and a DRV8301 gate driver with external current sense amplifiers

The Stormcore 60D+ has 3 battery shunts, a larger 100 pin STM32F405, two newer DRV8323 gate drivers with internal current sense amps.

The Unity/Stormcore ESCs are really a category of their own compared to VESC 4 or VESC 6 designs from Vedder. The Unity was based off the 2 battery shunt VESC 4 with quite a few changes, and evolved into a much improved design with the Stormcores.

You can run more than 65k eRPMs on a 60D. Bioboards tested the 100D to 100k eRPMs. and the older Unity was tested by the designer at 130k eRPMs

There is evidence to suggest that the 100D is fine up to 100k erpm.

My question is-- has anyone had issues with the 100D at high erpm? e.g. 65-100k or so