General Category => Wheels & Tires => Topic started by: illMATTic on February 14, 2013, 10:47:36 AM
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As you already know, the old stock bearings are probably pitted and worn. I have replaced them with a set of sealed NSK R8Z bearings. I also have a new 1/2" axle.
The bearings measure 1 1/8"x 3/8" with a 1/2 hole. I used a roughly a 1 1/4" diameter shim that was 1/16th" thick. There is also a spacer between the bearings. These numbers are approx. and may differ a couple thousandths.
I am in the process of doing this for my front Worksman brake drum as well.
I think I have like 20-25 bucks into the rear.
(http://img.photobucket.com/albums/v164/boombip/20130214_131538_zps3bc30ba8.jpg)
(http://img.photobucket.com/albums/v164/boombip/20130214_132854_zps92c4880d.jpg)
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FYI, anyone who needs replacement 1/4" balls for their original bearings, just let me know. I've got hundreds of them.
mike Sal
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My axle, bearings and races were all pitted. I know loose bearings are less money but I get tired of them falling out if I take the wheel off.
If my race was still good, I would have just replaced the loose bearings.
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Will you be offering a detailed drawings for both front and rear so we could have some made?¿? ???
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I will do my best. The problem is, I do not have the exact measurment for the rear shim any longer.
The parts I used for the front Worksman drum brake, are all off the shelf parts I found at www.treatland.tv (http://www.treatland.tv)They are a moped parts supplier. The bearing swap is pretty common for them.
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I will do my best. The problem is, I do not have the exact measurment for the rear shim any longer.
The parts I used for the front Worksman drum brake, are all off the shelf parts I found at www.treatland.tv (http://www.treatland.tv)They are a moped parts supplier. The bearing swap is pretty common for them.
Sure would like to convert mine over the winter. Any updates? Any issues since install?
Thanks,
Dave
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I second the interest in an update . Thanks .
Pete . :)
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Everything seems to be ok. I have only a few miles on it. As long as you use a quality bearing it should last.
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"I have only a few miles on it."
Hmm , I guess they really don't float to well . I mean not like a boat ... ;)
JK . :D
Pete . :)
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I have worked on this bike more in the past week than I have all summer. :P
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arent worksman's sealed bearings anyhow? why did you need a shim to fit the bearing?
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arent worksman's sealed bearings anyhow? why did you need a shim to fit the bearing?
Maybe he isn't using the worksman axle??? How long is a worksman axle anyway? What is the OD of a worksman axle? If I was going to use worksman wheels, I think I would just buy the rims and lace them to the Simplex hubs.
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I dont have one right here to measure but the drums etc are used on plenty of bikes (motored). i think the simplex is what? 4 3/4? im sure my whizzer is that and they fit those. Simplex drums are bigger, I know.
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I dont have one right here to measure but the drums etc are used on plenty of bikes (motored). i think the simplex is what? 4 3/4? im sure my whizzer is that and they fit those. Simplex drums are bigger, I know.
I'm thinking the axles might be too short for a simplex frame. Someone that has a worksman wheel needs to measure the axle length.
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A worksman axle is only 3/8". I have a 1/2" axle on the rear and a 12mm on the front.
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Okay..but the kit from treats brings em up to 1/2" ?
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No. This rear axle conversion was done on the fly. I had a friend turn the items on his lathe.
The other thread I have for the front states the 12 mm axle was purchased from treatland. I found this after I did the rear.