Beginner Question Thread! 2023 Edition

[Egtscs]

@Perrystevens

what happens if I keep it on 190kv?

(Obligatory not an expert)

I believe the primary risk is based on excessive Erpm
(Which is different from RPM)

@system

ERPM (Electrical RPM)

This is how you use motor KV and battery voltage to define the ERPM value. Remember this, its the holy grail of VESC configuration values.

KV * Max Voltage * 7 = ERPM

Example: 190 KV * 42.0v (10S) * 7 = 55,860 ERPM
Example: 260 KV * 25.2v (6S) * 7 = 45,864 ERPM

Why is ERPM important? The short answer is that all VESC’s and VESC based ESC’s have an ERPM limit, you want to stay below this limit or you’ll be the proud owner of a $200 + charcoal briquette. A standard 4.12 VESC has an ERPM limit of 60k, the FocBox/Unity and VESC 6 can go up to 80k per some sources but its (IMHO) better to stay at or below the industry defined spec of 60k.

I believe @Dinnye has ran (and blown up) several D100s’s in his Raceboi build.
Do keep in mind that this board is also constantly pushed to all of it’s limits. The majority of riders (me included) don’t push their controllers as hard as @Dinnye does.