ive got some 181 rear drums for my baja that i bought dirt cheap , thing(sic) is they are scored and could do with bit of a clean up on a lathe! oversize shoes/linings/whatever you crazy yanks call 'em are hard to find in the uk! what is the most i can take off and still use 'standard' shoes ? got any measurements aswell ( standard diameter , min /max wall thickness) thanx mikey
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viva las vegas baby
'skimming' rear drums
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elvisisgod
- Posts: 28
- Joined: Fri Mar 01, 2002 12:01 am
\'skimming\' rear drums
nice one fellas!
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viva las vegas baby
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viva las vegas baby
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jimw
- Posts: 63
- Joined: Sun Apr 22, 2001 1:01 am
\'skimming\' rear drums
Diameter for turning is 9.118 Max, or almost
9 1/8 if using a tape measure.
9 1/8 if using a tape measure.
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Jerry D
- Posts: 457
- Joined: Tue Mar 13, 2001 12:01 am
\'skimming\' rear drums
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Marc:
In fact, the maximum diameter cast into VW drums is based upon being able to achieve a satisfactory radius-match with "standard" linings. The "Without Guesswork" workshop spec booklets for Type 1/2/3/4 allow a 1.0mm larger drum diameter if oversize linings are used on those vehicles; I've never seen such a spec for Things but I'd expect it's the same. I don't endorse the practice for applications where potential fading is a big concern (like driving a camper in the mountains or repeated braking at high speeds) but apparently VW felt that there was sufficient material left in their drums even when turned past the "normal" spec or they'd never have put this in writing.<HR></BLOCKQUOTE>
Marc,
You are the first person I have seen that actually referred to the "Without Guesswork" booklets.
I was just getting ready to grab one of mine to look up the spec. when I saw your post.
I don't know if i could survive with out my little book.
Jerry....
In fact, the maximum diameter cast into VW drums is based upon being able to achieve a satisfactory radius-match with "standard" linings. The "Without Guesswork" workshop spec booklets for Type 1/2/3/4 allow a 1.0mm larger drum diameter if oversize linings are used on those vehicles; I've never seen such a spec for Things but I'd expect it's the same. I don't endorse the practice for applications where potential fading is a big concern (like driving a camper in the mountains or repeated braking at high speeds) but apparently VW felt that there was sufficient material left in their drums even when turned past the "normal" spec or they'd never have put this in writing.<HR></BLOCKQUOTE>
Marc,
You are the first person I have seen that actually referred to the "Without Guesswork" booklets.
I was just getting ready to grab one of mine to look up the spec. when I saw your post.
I don't know if i could survive with out my little book.
Jerry....
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justcallmebob
- Posts: 124
- Joined: Sat Nov 23, 2002 12:01 am
\'skimming\' rear drums
Easy Fix Old Boy
1. The maximum allowed
ID of the drum is stamped/cast into the drum itself. Anything beyond that will lead to warped drums in short order.
2. A good brake repair shop will have a machine that sands/grinds the new linings to the new radius of the drums. If the left and right are different the shoes will be sanded to match that drum. This is a standard practice on drum brakes.
3. As poor as VW brakes are you should always have your shoes "Arced" to fit each drum, otherwise you will not get full contact.
Cheerio
1. The maximum allowed
ID of the drum is stamped/cast into the drum itself. Anything beyond that will lead to warped drums in short order.
2. A good brake repair shop will have a machine that sands/grinds the new linings to the new radius of the drums. If the left and right are different the shoes will be sanded to match that drum. This is a standard practice on drum brakes.
3. As poor as VW brakes are you should always have your shoes "Arced" to fit each drum, otherwise you will not get full contact.
Cheerio
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Marc
- Moderator
- Posts: 23741
- Joined: Thu May 23, 2002 12:01 am
\'skimming\' rear drums
In fact, the maximum diameter cast into VW drums is based upon being able to achieve a satisfactory radius-match with "standard" linings. The "Without Guesswork" workshop spec booklets for Type 1/2/3/4 allow a 1.0mm larger drum diameter if oversize linings are used on those vehicles; I've never seen such a spec for Things but I'd expect it's the same. I don't endorse the practice for applications where potential fading is a big concern (like driving a camper in the mountains or repeated braking at high speeds) but apparently VW felt that there was sufficient material left in their drums even when turned past the "normal" spec or they'd never have put this in writing.