Speed vs Torque motor Heat

[Swan]

I have a 48 volt series cart with a plum quick Rattlesnake motor. Now according to PQ the rattlesnake is a good "middle of the road" motor with good speed and torque. I find myself lately driving on loose sand roads at a lower speed which is heating up the motor and it starts to whine when you accelerate after a period of time. Give it a half-hour of cool-down time and it is fine again. would a torque-style motor have the same issue or does it seems to use more amps to offset the heat issue.

[Swan]

Bump

[greg-g]

An electric motor whining is fine but do monitor the temperature. Remember that all electric motors change their internal characteristics when heated.

[Swan]

that i understand , but will a torque motor have the same issue ?

[Fairtax4me]

Driving on sand is kinda like constantly climbing a hill, even if it's packed sand it still causes a lot of drag on the tires.
You can lower tire pressure some to try to compensate and get them to float a little more on the sand, but if it's something you will do on a regular basis I would change to a torque motor. You will lose top end speed, but gain power in the low end and will reduce your motor temps at least slightly.

[scottyb]

Agreed. The choice between torque and speed is a decision many cart owners struggle with. The question I hear is 'I use my cart to hunt the GA hills and I want my cart to be faster than my neighbors. What motor should I get'
Honestly this person should get 2 motors. Throw the torque motor in for the hunting season and put the speed motor in for racing around.

Currently I'm running an Admiral long stack B14 (same as A14 with a different spline) and 21" tires, it is strong enough for any terrain and fast enough for anybody with the common sense to know 25 mph is fast enough in a cart designed for 1/2 that speed. This might be a motor you want to look at.

A motor built for torque will run cooler under a high torque situation and a motor built for speed will run cooler under high speed use... however. Both situations can result in excessive amperage draw, especially under low battery charge, resulting in unwanted heat.

[Fairtax4me]

#off-topic

Scotty, What brand is that plastic bed?

[kgsc]

Obviously Scotty would know but looks like a Rhox.

[scottyb]

Originally Posted by kgsc

Obviously Scotty would know but looks like a Rhox.

Bingo - They work pretty good for light to medium loads. No rock or firewood hauling. We have tractors for that work.

[Swan]

thanks all