glitching/cogging on new 4.5

[JThiessen]

Wow. So this saga is getting closer to an end I believe. I had him come over today so that we could try securing the connectors to make certain it wasn't his soldering that was contributing.
We hooked everything up, and I first tied down the battery connector to the chassis. I put out one of the ramps so we could run it over that to see what the effect was. He plugged in his battery, turned everything on, and started to run it out of the garage. He didn't get but 10 feet before smoke started rolling from under the body! The culprit - the capacitor blew.


So, he now has a burnt pile of crap to send back for retesting. I'm going to type up a synopsis of what we've tried, and he can attach that to the form, including the above picture.

After this occured, I put one of my old 4.5 systems in it, and it ran great. No cogging/glitching at all - even after landing a jump so hard that it snapped both rear shock mounts off the bulkheads! Yeah, he had a rough day!

Kinda sucks that this thing was returned once already - with a "nothing wrong" response.

[JThiessen]

Just thought I'd update this thread.

He recieved the system back from Novak a couple months ago, but due to all of our various vacations, we finally got around to putting it back in over the last week - in addition to converting his chassis to an FLM extended chassis.

Opening the box, it was the same system he sent to them, but with a new capacitor on it. I assumed that they checked and fixed "something" for the apparent BEC issue.

We put everything back together again, and dont you know it - same old glitching. ESC shuts down, reciever shuts down, then comes back on.
I pulled his Futaba system off his, and put it in my Revo with the MMM/Neu, and it worked fine (after spending a half hour with the WORST manual in RC history).

I once again put my DX3.0 in his truck, and got the same glitching.

I then pulled my old HV-4.5 off the shelf, and put it in his truck. Worked GREAT!! Next step, I'll put his Futaba back in and run it, but I'm 99% certain that it will work.

Now, how in the @($* do we get Novak to replace this damn thing instead of just bench testing it to spec and sending it back. The Brother in law isnt a very technically minded person, and he's getting really frustrated with the hobby due to this one product. I'm trying to keep him positive, but the string is getting short I believe....

On Edit after sleeping on this: I was ranting a little here, so I'll kick my soap box to the corner now! I'll attempt to contact Charlie myslef tomorrow afternoon regarding this, and see what I can communcate. The first time it was sent back was through the LHS where it was purchased, so there is no way I can know what info was relayed to Novak. However, the second time, I typed up a synopsis of the events portrayed in this thread, so I know what was conveyed to them then.

[BL_RV0]

Why not disable the BEC and run a RX pack? As Chris said, the problem is the BEC dipping voltage to the RX- effectively shutting the system down. This explains why the truck was "stalling" when landing jumps- the excess strain on the ESC to get the truck up to speed depleted the BEC voltage to the RX and "stalled" the truck.

[JThiessen]

FWIW, it's not just when landing jumps that it occurs. Its all the time.

Anyway, I think the reason he doesn't do that is because he shouldn't have to. Its never functioned since new, and should be replaced by Novak now, not just another stab at bench testing/repair. And on the old EMaxx chassis, there was a serious lack of room for another battery. Now on the FLM, there is room to do that.