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Old 04-28-2015, 04:52 PM
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Join Date: Mar 2010
Location: Central Texas
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Default Re: what did you do to your motorized bicycle today?

Originally Posted by bluegoatwoods View Post
I've been having a bit of trouble with my rear wheel.

Last Thursday I was on my way to work when the rear wheel suddenly locked up. It definitely looked as though the brake was applying without back-pedaling. (single speed, coaster brake.) I tried to free it up for a bit. Then I gave up, locked the bike to a guardrail and walked the rest of the way. Picked it up with my car that evening and took it home.

I got my chance to work on it yesterday. Took that hub apart and found that the left wheel bearing was toasted. Replaced it, put it back together carefully, rode it a couple hundred feet and all seemed okay. (Used my last spare bearing, too. But I'll soon get more on hand.)

Took it out for a longer test run. Got about a half mile from home and she really seized up this time. My brake arm is now twisted into a horseshoe shape. I don't doubt for a moment that I'll find that bearing shredded again. Probably other damage as well.

So today I took the rear wheel from my old Huffy Cranbrook and put that on. A couple mile test run showed no trouble. I want to adjust the wheel just a bit more and take it for another test run here shortly. But it feels like it's roadworthy.

So next I'll get new guts for a Shimano CB-E110 and rebuild my primary hub. I'm gonna have to figure out just what mistake I'm making in installation/adjustment. I've gone through more bearings than I ought to. It's the bearing under the brake arm that gives me trouble.

e sure you're not over tightening the bearings, they need to be snug with little to no play in them but over tightened bearings of those type will fail quickly.

What kind of grease are you using?

I personall6 think a High Tack grease with Molybdenum/Moly in it is best, Ive never had a single bearing failure in any of my wheels, front, coaster, multi speed type.

I like the braking of the E110 Shimano hubs the best, but even my Huffy Falcon hub has done a great job, pulled it down for general maintenance a while back for the first time since 2010 qnd the guts still almost look brand new it only has a little over 1000 miles on it, but they have been rough miles on these ver6 rough dusty dirt roads I ride and not a single issue, the engine on that bike has a sweet spot at 34mph according to my speedo and that is where it has been run for the majority of those miles so the wheels haven't been babied on it, jus5 properly tensioned bearings and a High Quality Tacky Moly grease made by Schaeffer is what I have that hub full of and I use another type grease also in my wheels made b6 a compan6 called arrow Magnolia, its so dang expensive though I've stopped packing my bike bearings with it and sticking with the Schaeffer Premium Moly Grease, its also a very good grease, just kinda hard to find.

Im gonna suggest you look closely at the bearing race in the hub itself, if it has heat stress cracks or is scolloped from all those other bearing failures you will never get a bearing to last running on that kind of surface and you need to either replace tha5 hub or just get an entire new wheel with new hub.

Hope you get this sorted out quickly, and hope the Huffy wheel gives you good service in the meantime, just make sure you dont get those bearing to tight, if you do you get serious heat buildup and the tolerances are to tigh5 for the grease to get in between the moving parts and that bearing is gonna cook quickly, just a slight amoun5 of play in the bearing is better than a bearing of that type that is to tight.

I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!
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