- Sat Jun 04, 2016 8:40 am
#140297
Hello All! First off, I'm a newbie to modifying power wheels, but I love the idea, as I'm always tinkering. Glad I found this forum, but I can't find any help with the issue I'm having upgrading my son's BPRO from 6V to 12V, and its driving me nuts!
Here's the details:
It's a 6V Rollplay Chevy Silverado
I've added a 2nd gearbox (ordered it from Rollplay, so it's identical to the other one)
I've wired up a second identical stock 6V battery in series to boost it to 12V
I've swapped out the stock motors with the 12V Duratrax 550 starter box motors, that I've heard on here are good motors
Here's whats going on:
It works well for awhile, maybe 10 minutes or so, depending on how loaded the motors get (ie if he "offroads" it, etc). It goes fast when its working. I've checked, and the motors are receiving the 12V. After awhile though, it starts to sputter, the "on" button light flickers on and off, then it stops working. The batteries still have a full charge. After awhile, it will start working again.
So, based on this, I would guess something is overheating, but I don't know what. It's not motors, as they're 12V motors, I even put heat sinks on them. I feel the exposed wires, and they don't feel excessively warm, so I don't think its that. The truck does have a battery indicator board and a MP3/speaker board and headlights, which I thought may have been the issue, so I bypassed them by unplugging them, and its still having the same issue. The last thing I can think of is the motor control board which contains 2 relays and 2 resistors. Could this be the issue? Either that or some wiring is too small of a gauge and overheating and I'm not realizing it?
Any help or suggestions is MUCH appreciated, as again, its driving me nuts that I can't figure it out! I'm about to put it back to stock and sell it for a different one.

Here's the details:
It's a 6V Rollplay Chevy Silverado
I've added a 2nd gearbox (ordered it from Rollplay, so it's identical to the other one)
I've wired up a second identical stock 6V battery in series to boost it to 12V
I've swapped out the stock motors with the 12V Duratrax 550 starter box motors, that I've heard on here are good motors
Here's whats going on:
It works well for awhile, maybe 10 minutes or so, depending on how loaded the motors get (ie if he "offroads" it, etc). It goes fast when its working. I've checked, and the motors are receiving the 12V. After awhile though, it starts to sputter, the "on" button light flickers on and off, then it stops working. The batteries still have a full charge. After awhile, it will start working again.
So, based on this, I would guess something is overheating, but I don't know what. It's not motors, as they're 12V motors, I even put heat sinks on them. I feel the exposed wires, and they don't feel excessively warm, so I don't think its that. The truck does have a battery indicator board and a MP3/speaker board and headlights, which I thought may have been the issue, so I bypassed them by unplugging them, and its still having the same issue. The last thing I can think of is the motor control board which contains 2 relays and 2 resistors. Could this be the issue? Either that or some wiring is too small of a gauge and overheating and I'm not realizing it?
Any help or suggestions is MUCH appreciated, as again, its driving me nuts that I can't figure it out! I'm about to put it back to stock and sell it for a different one.