RCCrawler Forums

jardine · 03-10-2006, 01:10 AM

got a new rig so id figure i would use the old gears out of the old rig and do a extra low gear mod in the new one. could anyone explain to me and post pictures on how to do it. ive searched and looked at pictures but am still a little out in the blue. any of you help would be awesome.

thanks guys and crawl on

sourdojack · 03-11-2006, 04:53 PM

well i had read a lot about this before i did it on my truck, and everyone who used old axles to add a second reduction used the black layer. but i didnt like how thick it was and some people cut a hole in the side of the axle. so what i did was use another yellow layer (final layer) and instead of having just that top plate with the tabs on it, i used the top gear from the white layer (first layer) and i double drilled it to fit on the yellow layer. then after i got it all working i stuck it in right before the black layer. its kind of confusin, but it works great and gives you a 5:1 reduction.

after that i took a hobby knife and set it on a burner and cut out the motor mounts and the screw post. then i used a dremel with a round ended cutting bit and went to clearanceing out the grill thing. on the front axle you kinda have to grind into the steering motor, or while you are at it you could get some aluminum angle stock and make a servo bracket for the steering.

http://board.marlincrawler.com/index.php?topic=21010.0

03-10-2006, 01:10 AM	#1
jardine Newbie Join Date: Jan 2006 Location: alpine Posts: 3	low gear mod got a new rig so id figure i would use the old gears out of the old rig and do a extra low gear mod in the new one. could anyone explain to me and post pictures on how to do it. ive searched and looked at pictures but am still a little out in the blue. any of you help would be awesome. thanks guys and crawl on

03-11-2006, 04:53 PM	#2
sourdojack Rock Crawler Join Date: Feb 2006 Location: Where the foams are always wet Posts: 878	reply well i had read a lot about this before i did it on my truck, and everyone who used old axles to add a second reduction used the black layer. but i didnt like how thick it was and some people cut a hole in the side of the axle. so what i did was use another yellow layer (final layer) and instead of having just that top plate with the tabs on it, i used the top gear from the white layer (first layer) and i double drilled it to fit on the yellow layer. then after i got it all working i stuck it in right before the black layer. its kind of confusin, but it works great and gives you a 5:1 reduction. after that i took a hobby knife and set it on a burner and cut out the motor mounts and the screw post. then i used a dremel with a round ended cutting bit and went to clearanceing out the grill thing. on the front axle you kinda have to grind into the steering motor, or while you are at it you could get some aluminum angle stock and make a servo bracket for the steering. http://board.marlincrawler.com/index.php?topic=21010.0

Sponsored Links

RCCrawler Forums

Thread: low gear mod