Bot has Tamiya Twin motor GearBox Set, L293D and 850 mAh LiPo. This battery: https://www.sparkfun.com/products/341
It seems to go straight ok on the floor or carpet. Turning is a problem, particularly on carpet. If you slow a track down it tends to stall.
The gears seem kind of loose. Is slippage and jamming common? Is it underpowered for turning, particularly when there is good traction? Any ballpark ideas how long before needing a charge and is it okay to run it like 15 minutes straight?