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A few questions about batteries, gearing and my motor.

A few questions about batteries, gearing and my motor.

Old 09-30-2021, 12:17 AM
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Default A few questions about batteries, gearing and my motor.

I have a traxxas 1/16 e-revo VXL that i bought around 5 years ago. I started running this car with the stock 1s 1200mah nimh battery, and I got really into it and bought 2 3s 1400mah traxxas lipos, and I was running them parallel on 28/50 stock gearing. The motor would get really hot to the point that I could only keep my finger on it for about 1-2 seconds before it would burn me, would that be a problem? I have got back into rc cars and have since thrown the puffy lipos out. I got a new 1200mah 1s nimh battery and the car has to warm up until I can reach higher speeds, why would that be? I am thinking of buying 1 or 2 2s lipos and either running them parallel on 23/55

or just one at a time, is there anything wrong with that? And also, what are good, cheap 2s lipos that would fit the car's small battery compartments.

Cheers, Harry.
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Old 09-30-2021, 05:00 AM
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Please clarify, what do you mean by "1s NiMH"? "s" is normally used for the number of cells - 1 cell NiMH would only have 1.2V (very unlikely you have that). 4-6 cells is the usual range, meaning 4.8-7.2V nominal voltage. If you put a 3s LiPo into that same system, it would run on 11.1V (again, nominal voltage - actually up to 12.6V, with no load), so you have increased the power a lot. That's why it got hot, and yes, motors getting too hot (I don't trust the finger for x seconds method, since everyone's sensibility is different), can potentially damage them.
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Old 09-30-2021, 09:34 PM
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Originally Posted by DirkW
Please clarify, what do you mean by "1s NiMH"? "s" is normally used for the number of cells - 1 cell NiMH would only have 1.2V (very unlikely you have that). 4-6 cells is the usual range, meaning 4.8-7.2V nominal voltage. If you put a 3s LiPo into that same system, it would run on 11.1V (again, nominal voltage - actually up to 12.6V, with no load), so you have increased the power a lot. That's why it got hot, and yes, motors getting too hot (I don't trust the finger for x seconds method, since everyone's sensibility is different), can potentially damage them.
Sorry, it is a 6 cell 7.4volt battery pack. It says 1Series on the pack, and I just assumed as the "1" and the "S" were so big it was trying to say it was 1s. And thankyou for the advice with the motor.
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