RCCrawler Forums

slobin3d · 08-26-2007, 03:16 PM

I've got a hand wound 60t that is in the front of a clod, the endbell has been spun 180 to reverse the windings, running off a MMax.

The problem is that just recently it has stopped running properly,what it does is when I give the truck throttle in any amount it will not start to spin till I give the tires a boost, forward or reverse. I cleaned the brushes, which are nearly new, cleaned the comm as well, Any Ideas what could be causing this??

theshimonator · 08-26-2007, 03:52 PM

there have been several problems like this and jrh helped me out with this in telling me that the armatures stop between the magnes then no longer go until you push it! i sorted this problem with me buying a new motor. i took the original motor apart countless times and nothing seemed to happen!

scatterbrains · 08-26-2007, 05:19 PM

I had the same problem, except w/ a 45T lathe it was junk tried everything and nothing worked scrapped it and borrowed a buddies 55T lathe works fine.
hope it helps

slobin3d · 08-26-2007, 09:51 PM

got it running again, recut the comm and recleaned the brushes, then ran it for about 15 minutes no load at full throttle, works great

EeePee · 08-26-2007, 09:56 PM

Yeah, that's a flat spot on the comm, or something like that.

Cut the comm, and it should work, as it did in your case.

08-26-2007, 03:16 PM	#1
slobin3d I'm a stupid C U N T! Join Date: Jun 2005 Location: In the Garage! Posts: 4,307	motor wont spin on start I've got a hand wound 60t that is in the front of a clod, the endbell has been spun 180 to reverse the windings, running off a MMax. The problem is that just recently it has stopped running properly,what it does is when I give the truck throttle in any amount it will not start to spin till I give the tires a boost, forward or reverse. I cleaned the brushes, which are nearly new, cleaned the comm as well, Any Ideas what could be causing this??

08-26-2007, 03:52 PM	#2
theshimonator Rock Crawler Join Date: Oct 2006 Location: England, Where the birds fly backwards. Posts: 626	there have been several problems like this and jrh helped me out with this in telling me that the armatures stop between the magnes then no longer go until you push it! i sorted this problem with me buying a new motor. i took the original motor apart countless times and nothing seemed to happen!

08-26-2007, 05:19 PM	#3
scatterbrains RCC Addict Join Date: Jun 2006 Location: hillsborough Posts: 1,031	I had the same problem, except w/ a 45T lathe it was junk tried everything and nothing worked scrapped it and borrowed a buddies 55T lathe works fine. hope it helps

08-26-2007, 09:51 PM	#4
slobin3d I'm a stupid C U N T! Join Date: Jun 2005 Location: In the Garage! Posts: 4,307	got it running again, recut the comm and recleaned the brushes, then ran it for about 15 minutes no load at full throttle, works great

08-26-2007, 09:56 PM	#5
EeePee MODERATOR™ Join Date: Jul 2004 Location: Ohio Posts: 18,928	Yeah, that's a flat spot on the comm, or something like that. Cut the comm, and it should work, as it did in your case.

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