RCCrawler Forums

kooter · 11-16-2009, 08:59 AM

So yesterday at the comp my rig died on the finals course. I just figured it was the battery hitting the lipo cutoff. I went to charge said battery and its still at 11v. I did notice something strange. With the battery out of the rig, I spin either the front or rear tires and the other tires spin too like if it was a shafty. It shouldn't do this. I can't get the crawler to move under its own power with the battery. Did something get fried?

SVEN · 11-16-2009, 09:25 AM

Quote:

Originally Posted by kooter

So yesterday at the comp my rig died on the finals course. I just figured it was the battery hitting the lipo cutoff. I went to charge said battery and its still at 11v. I did notice something strange. With the battery out of the rig, I spin either the front or rear tires and the other tires spin too like if it was a shafty. It shouldn't do this. I can't get the crawler to move under its own power with the battery. Did something get fried?

Not sure what's wrong with your rig, but that 'shafty likeness' is normal for MOA rigs. It is caused by the motor you spin generating power and since the two motors are wired to each other, the other motor turns using the power you generated.

kooter · 11-16-2009, 09:31 AM

Thanks for the info. This is my first MOA rig so I just never noticed this before.

Robbob · 11-16-2009, 09:57 AM

how old are the motors? check brushes, maybe the hung up or need replacing? different pack do the same thing?

kooter · 11-16-2009, 10:00 AM

Motors are newer. Probably had 4 or 5 batteries through them. I'll take a look at them just to make sure they're good.

punkuup5150 · 11-16-2009, 12:28 PM

check gear mesh also. with motors getting smashed up on rocks the mesh can get very very tight doesnt happen often that it stalls out the motors but could be one of the causes. also as stated above check brushes i knwo my integys are about 3 months old and the brushes are allready chipped big time so im haveing alot of power loss from this also

kooter · 11-16-2009, 12:34 PM

Found the problem. Guess my soldering wasn't good enough as I broke a joint between a deans end and a wire from the ESC. Thanks for the ideas and I'll take a look at the mesh. I'm getting ready to swap out the 55's for 45's.

11-16-2009, 08:59 AM	#1
kooter Pebble Pounder Join Date: May 2006 Location: St. Louis Posts: 123	What Happened? So yesterday at the comp my rig died on the finals course. I just figured it was the battery hitting the lipo cutoff. I went to charge said battery and its still at 11v. I did notice something strange. With the battery out of the rig, I spin either the front or rear tires and the other tires spin too like if it was a shafty. It shouldn't do this. I can't get the crawler to move under its own power with the battery. Did something get fried?

11-16-2009, 09:31 AM	#3
kooter Pebble Pounder Join Date: May 2006 Location: St. Louis Posts: 123	Thanks for the info. This is my first MOA rig so I just never noticed this before.

11-16-2009, 09:57 AM	#4
Robbob Custom Carbon Fiber Join Date: Oct 2007 Location: Connecticut :( Posts: 4,501	how old are the motors? check brushes, maybe the hung up or need replacing? different pack do the same thing?

11-16-2009, 10:00 AM	#5
kooter Pebble Pounder Join Date: May 2006 Location: St. Louis Posts: 123	Motors are newer. Probably had 4 or 5 batteries through them. I'll take a look at them just to make sure they're good.

11-16-2009, 12:28 PM	#6
punkuup5150 Rock Crawler Join Date: Mar 2008 Location: lodi Posts: 952	check gear mesh also. with motors getting smashed up on rocks the mesh can get very very tight doesnt happen often that it stalls out the motors but could be one of the causes. also as stated above check brushes i knwo my integys are about 3 months old and the brushes are allready chipped big time so im haveing alot of power loss from this also

11-16-2009, 12:34 PM	#7
kooter Pebble Pounder Join Date: May 2006 Location: St. Louis Posts: 123	Found the problem. Guess my soldering wasn't good enough as I broke a joint between a deans end and a wire from the ESC. Thanks for the ideas and I'll take a look at the mesh. I'm getting ready to swap out the 55's for 45's.

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