Hi Steve, I have the same problem with the ESCs in my HSL. They are cheap Chinese car model
s and can be a bit tricky to get into reverse quickly. I have found that either waiting a few seconds in neutral before trying reverse, or going to neutral and flicking the throttle forward a few clicks and back to neutral quickly (in .5 sec) usually sorts it. I think it may be that the motor
stops somewhere that the cheaper ESCs can't detect (bit like an old car starter that hits the bald spot on the ring gear and you have to jog it a bit) so you have to move it slightly for it to 'see' it (maybe the capacitor
s also). Brushed ESCs don't have that problem as the brush
es are in constant contact, rather than relying on correct positioning in Brushless motor
s. You will also find that some Chinese motor
s are not timed/wound correctly, and you can feel weak or 'floaty' spots between certain magnets which may also cause a problem. Perhaps trying a higher or lower ESC timing by 1 step either way might help if you have that capability.
if it works by just flicking the throttle method, you can just slow down as you come in and take you time finding reverse in a scale like manner (remember the PT109 movie where they went through the shed on the wharf) You can also try swapping the other pairs of wires on the motor
(same direction but different pairs). if you are still not happy then it might be time as Doug said, for a better ESC with instructions
. Get one which has all the programing features, (fwd, rev , timing, auto batt detection (lipos or NmH etc) starting mode- ie soft,hard, brake etc) this will give you plenty of options for adjustment. Doesn't have to be a marine one, a good known brand car/buggy one will do and if you have any heat problems you can always put a mini fan on it. Water cooled marine ESCs are really only for high amp high speed
setups. My 36"HSL has 2x 30A car ESCs running 2x 28/45 2000kv water cooled motor
s and ESCs never get even warm. Pictured are the ESCs I am using from HK which have an output plug for a fan if needs be. The 3rd pic is the brushless
ESC types (EBay, AliExpress) I am using, which have no problems with reverse transition
(see vid section re Thornycroft MTB maneuvering) also the HSL vids to give you an idea of how these brushless
ESCs perform even with the minor reversing problem. Hope you get it sorted.