microsash is using a lithium polymer cell - 140 mAh as far as i know.
The truck has one major problem - the articulation has an enormous influence on the steering. You can only solve this problem, if the servo is mounted/connected to the axle. As it is done on the larger (1/10) crawlers.
He has modified his concept and is now using a seperate servo for each axle.
Here is the coresponding thread
http://549.rapidforum.com/topic=102177466221
But this increases the overall length/size
It isn't a zipzap any more
diets - the smaller the servos, the smaller the truck
