Tamiya lunchbox accelerating problem

[hj800]

Hi guys im new to this, bought a lunchbox for a few laughs. But some time when i try to accelerate the hole car jumps and doesnt move forward. Its like it jumps from to much torque. It moves forward if i push the throttle slowly but if i go full wack it just jumps and moves about an inch.

ANy ideas? Maybe a problem with the electronic speed controller or the radio reciever not be the most compatable?

Any suggestions would be appreciated

[jimmy]

I was gonna say - sounds like a typical 3-step mechanical speed controller problem, but obviously it isn't. Is it a Tamiya electronic speed controller? I've no experience with the Tamiya ESC's but maybe someone will have heard of this problem and be able to help.
The only thing I can think is maybe the voltage is dropping when you hammer the throttle and that's shutting down the ESC? I think I had similar experience with my Tamiya ESC in the tamtech-gear buggies - when the cells were fairly low (but not flat) on charge, the ESC would jump the car forward and cut out.

[Migs]

yeah sounds like LVC, how long til after the car stops accelerating do u get throttle response back, ie is there a delay after the car stop before you can make it move again

[Power Surge]

Do you have another battery pack to try? Sounds like the pack may be bad and can't handle the initial amp draw from a heavy start.