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Discussion Starter · #1 ·
Hey Everyone,

My Skoda is somewhat broken. On further inspection the motor, when given power, refuses to turn unless i give it a small twist and then its away. Until I stop and then restart and then, once again, it needs to help to get going again. Before I do anything rash like spray it with WD40 or something like that I though it best to ask the experts for some advice. Or is it time to drop a new engine in there and have done with it?

Mark
 

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rob Wallader
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Hi Mark,
Are you sue its the motor? have you taken it out & turned it by hand. It is more likely to be the gearing. the plastic gears can have a burr on one which can cause it to stick.
If it is the motor, take it out of the car & check if it turns freely by hand.
Rob
 

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Hi Mark
That could be caused by any one of a number of problems.
If Rob's suggestion doesn't work, another possibility is a pole failed.

As you turn the motor by hand you'll notice it clonks over from magnetic pole to pole 6 times a rev.
If it won't start, turn it one or two clonks and try again.
If it will start in some positions at not others, it may be repairable if you strip the motor down. If you are not into taking motors apart, then its time for a new motor.
 

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I had a Slot.It orange endbell motor act the same way. I hooked it to a 9v battery and dunked into a cup full of water while running. After about 10 seconds, it "woke up" and spun free. Put it back in the car, and it runs great now.
 

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Either one of the poles is dead or you have two of the comm segments shorting out due to crud between the segents. Is it an SCX? Then its crud between the segments. Clean out the segments with a small pin ond dunk in some cleaning fluid.

cheers
rick1776
 

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Dickie,
what does one do with a motor after removing it from water ? I imagine water , if not properly dried/removed would lead to corrosion and other problems.
 

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Discussion Starter · #7 ·
Well, a new motor and a bit of soldering and hey-presto - goes like new. Thanks for all the useful advice folks. Think I might have gotten a bit carried away though, since I went straight on and replaced the motor in my battered old scoobydoo too
 
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