Electronics questions

[Espeefan]

Baker3, I think independent dual motor ESCs are generally not cheap. You could also run two separate single motor ESCs as well. A radio transmitter with dual sticks would be ideal for running a set-up like that. Single motor ESCs can be found for very cheap, but the catch is you need two. If you can keep the cost under that of the Sabertooth 2x5 ESC, which is $60, it would be beneficial. Otherwise, you might just be better off with a Sabertooth.

Perhaps someone knows of a cheaper dual motor ESC. I would suggest checking with some robot supply stores for something really light duty. The servos shouldn't pull much more then 5 amps. You might try posting a wanted for something second hand.

On another note, it is possible to convert normal servos into continuous rotation servos quite easily. The internal circuit board of any servo makes a great built in ESC, once you've made the conversion. Then no external ESC is required at all. Each servo would have it's own.