First post here... sorry it has to be a problematic question.
I've had my summit here for about 2 weeks (ish). When I bought it, it was the floor model (all they had left), and I was expecting some issues. First one was the servo. Gears were next to stripped already from people yanking the wheels back and forth on display. Expected.
However, it's never had any power cycled through it prior to my purchasing it. This was rather odd out of the box: at low power, the summit would kind of.... hesitate going either direction. You have to really juice it forward or backwards to get it going, otherwise it stutters, then it shuts off. Light on the esc is off, entirely. Just push the button and it's back going.... but it's still odd.
Now... after having been dealing with that (no spare esc to replace the one at the hobbytown where I bought it), it's gone all kinds of weird today. I was literally just outside running it through some damp tall grass, and it just stopped all together. Steering still works fine, but it just refuses to provide any power to the wheels at all. Has a NASTY sound when it turns on. Sounds like some arcing or something.
-When giving throttle, wheels just stutter back and forth cycling between reverse and forward constantly.
-Trying to go reverse causes a high pitch squeal from the esc.
I did some basic cleaning last night with it (removed shocks from arms and loosened everything to clean the caked on clay and sand out that a hose wouldn't), but everything is back in place as it should be.
There is no binding when rolling the car free-hand without the battery(ies) in.
Things of note:
I was running 2 NiMH batteries in series when this happened, didn't break half throttle.
Summit stopped functioning in grass that's barely tall enough to touch up halfway to the top of the tires.
I think it's just a bad ESC, personally. Everything points to it. I just want some extra confirmation before I go ahead and find one.
Also... what other ESC should I look for? Still using it stock-out-of-the-box. I've been out of the R/C scene for about 4 years now, so some advice on that would be greatly appreciated. (For perspective, the latest and greatest radio I had used prior to this was a futaba FM radio. We upgraded from AM crystals. Brushless systems were just starting to come out. Haha.)