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Replacing rear drum/sprocket
#654466 05/27/16 5:28 am
Joined: Sep 2013
Posts: 721
In Remembrance
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In Remembrance
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After having the front final drive sprocket replaced earlier this month, I have purchased the rear drum/sprocket and a new chain from Baxter's. I also purchased a bearing to go in the drum per the parts book illustration. It looks like the steps necessary to get the old parts off the worn drum/sprocket and installed on the new one are a little bit involved.

If any of you has done this before, please advise any suggestions, pitfalls, tricks etc.

Thanks.

Regards,
Stubb


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Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654505 05/27/16 11:32 am
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Any B.S.A. workshop.manual for the Gold Star like the Bruce Main.Smith or Haynes manual explains how to take out the bearings.Not too difficult.
Goldie John.

Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654509 05/27/16 11:46 am
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Do pay attention to the fit (interference)of the bearing/hub.

Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654582 05/28/16 7:23 am
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Wow. Well, good thing I have the books.


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Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654703 05/29/16 11:30 am
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The brake drum bearing is totally enclosed in the drum. Is this the bearing you want to replace. The bearing is secured by a dished washer and circlip which can be removed with a screwdriver.If this is the bearing you want to replace in the hub, this is the way to do it.
Goldie John.

Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654756 05/29/16 11:15 pm
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Check the new drum/sprocket for runout on the sprocket...have seen some (even original) with far too much runout when you spin them.


No generalisation is wholly true, not even this one.
Oliver Wendell Holmes
Re: Replacing rear drum/sprocket
Kerry W #654769 05/30/16 3:37 am
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My original basket case came with a I presume Taiwan rear drum/sprocket.
Had 2.5mm run out!!
Converted a A65/B44 rear drum with alloy brake to fit with bolt on sprocket.
Rear sprocket has 47 teeth, so made pulling away a little easier with my RRT (not T2) box that I have fitted...

Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654775 05/30/16 7:07 am
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Thanks fellas. I'll check the runout first thing. I hadn't thought of that.


Hate is a poison which one consumes hoping for another to die.
Re: Replacing rear drum/sprocket
stubbicatt R.I.P. #654792 05/30/16 10:51 am
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Stubbicat, the light that shines twice as bright lives half as long, so keep the revs down, or conversely,''life is a bitch, then you die''. make sure you don't hit anything.
The philosopher.


Moderated by  Rich B 

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