Asked
— Edited
going to buy a battery for a sabertooth. im going to get one with a mini Tamiya end and add the male plug to the sabertooth.
what is a good voltage for a sabertooth 2x12 running two 3A motors, each with a peak of 6A's?
if you find a good one please give a link.
Thanks, Techno
Technopro, You are going about this backwards. You need to figure out how many volts and amps the motors take to run, then get a controller that will hande that load. It looks like you have the amps figured out. Most Sabertooth controllers have a wide range of voltage that they will cover, but it is the motors that determine what voltage you need to supply.
ok well I know the motors came from another rc car that was powered by 4 AA batteries. 4 AA= 6v.
that drove them alright. it was the start ups in the other rc car that made me tear it apart.
I might have read your question wrong the first time. Were you looking for a battery, or a link for the Sabertooth? I thought you were trying to decide what controller to buy. In any event, the motors are designed to run at a maximum voltage. That is what your battery should be. If they came out of a car that ran on 6V, then that it what you should be looking at. I don't know much about small batteries to recomend a particular one. I am sure that someone here can help you with that. But, you answered your own question. 6Volts is what you will need.
Ok so the minimum voltage for the sabertooth.
If the motors take 6V, then the battery has to put out 6V and the Sabertooth has to handle 6V. Here's a Sabertooth that will work. It is a little pricey. You could probably find one cheaper. This one is regenreative. When you slow your car down, the braking energy is converted back into electricity that is fed back into your battery so that it doesn't run down as quickly. It runs 6V to 18V. It can handle two motors running at 5 Amps each and peaks of up to 10 Amps. Your motors sound like they are within that range. There are other motor controllers that are cheaper than Sabertooth. The important thing is to look at the specs (volts and amps). I wouldn't buy a real cheap one though. Well, I wouldn't do it again. I did that once, and got junk that didn't work. Shop around. Be smart about it.
yea. unfortunately that sabertooth has a peak of 10 A for a few seconds. with the 2 motors im using I need a 6A continues and a 12A peak
that's why I was going to use the sabertooth 2x12.
www.dimensionengineering.com/products/sabertooth2x12
it will supply the motors with all they need and no more. plus I could reuse it with larger motors.