Esc Advice

[Theo]

Would they work for testing, though? To be honest, I just want a pair of speed controllers that drive the motors for now, I don't think I'll be able to make any events for another 6 months to a year (depending on if robot wars does a FW tournament). So, would the cheap eBay ones do the trick just for testing? Do they brake? (key question) ​Thanks.