wiper motor getting too hot

[ferslash]

guys, i am doing the first laps in my seat mover, using pololus jrk and wiper motors, the thing is tha one of them, is getting too hot, that much that i had to stop using the sim (i used for 30 mins)

bouth motors are different, but one is hot and the other is totally cool, any ideas?

both motors has a computer fan to help up cooling them

best regards from mexico


fer

[Bruceaust]

A high proportional of derivative setting will also drive you motors harder and get to hot! I put some cooling fins on the wipers also - make them from aluminium angle and a couple of large hose clamps.

[prodigy]

I had the same problem, two different wipers, one of them was weaker, probably more used and this one was heating more.

[yokoyoko]

What do the brushes and the commutator look like?

How long are they still?

Kohlebuersten-AEG-63.10180.jpg (5 KiB) Viewed 3114 times

Can you feel a groove in the commutator with your fingernail? What colour does it have?

Bearings binding?

[ferslash]

wow! what a nice and kind replay, thank you all of guys

i will do as you recommend me, check for the amperage going to the motors via the jrk configuracion tool, if not, i will try to clean them or replace them.

* i have at first two similar motors, but one got broken (i think that goint to the yunke yard has not been a grate idea , then i replaced the broken one with a similar, but different one... by the way, the one that gets hot has a tremendous torke.

thanks guys


fer

[RafBR]

I made this heatsink and it works very fine.


regards!

[motiondave]

Just a comment, when I first got my big worm gear motors, they are rated at 180w (new ones are 200w and more efficient), I was overdriving them to 500w, and they got real warm, but nothing a fan wouldnt cool.