Date: Fri, 27 May 2016 01:09:25 -0400
Reply-To: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject: Re: Solved?? Re: further measuring of new GW brake shoes vs old
generic brand shoes
In-Reply-To: <CAB2Rwfgnm8_DgdQqyLW-JisTvCARLwkmSv8zVL_D1TbnEP=T+g@mail.gmail.com>
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The only down side is that with those aftermarket shoes you get to have lousy brakes. Not having the full surface of the shoe contact the drum means less effective friction surface. There is a good chance those drums you have are tapered. I have had bad luck with drums being the correct dimensions so many times I only use ATE or the GoWesty HD. Turning new drums to make them round and true also makes more room. That pictures looks like you may have had some drag on the backing plate. I have seen that with poorly machined drums also.
Dennis
-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Neil N
Sent: Thursday, May 26, 2016 2:52 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Solved?? Re: further measuring of new GW brake shoes vs old generic brand shoes
So I bought another set of shoes locally. I set the adjuster just slack then measured to outside of each set of shoes, one set mounted at each wheel.
New shoes 245 mm, GW shoes 250 mm. ID of new drum is 252 mm.
When first measuring the GW shoes, the lower tangs appeared longer than same on old shoes. Manufacturer made them this way to help initial wear pattern?
(i.e. made tangs longer similar to one adding shims?) My next attempt at measuring seemed to confirm this. I clamped each pair to a new drum, butted the lowers ends together, measured distance from mid point at each upper tang of shoe. That tang on each was the same width at end.
GW: 133 mm image: http://tinyurl.com/h4sac7l new shoes: 143 mm. Image: http://tinyurl.com/haq5b2s
Shoe lining thickness in each shoe brand: 6 mm.
Difference in shoe bracket thickness: slightly less than 1 mm.
E brake lever on new set of shoes is thicker. The fork on adjuster fits with less play.
Holding the new shoes to drum, they fit well but sit a hair high at middle.
Pushing by hand takes out this play.
I bought the GW shoes over a year ago. Maybe they changed brands since then.
Maybe they're best suited to worn drums? (most owners typically replace only the shoes?)
googling new shoe number BS503L shows Dura International brand.
If they wear mostly at upper half initially, thats fine.
I'm hoping the new shoes don't drag.
On a side note, was disappointed to see my new backplate plug damaged by lip of new drum. Image: http://tinyurl.com/hfzzym8 This damage happened at each wheel. I don't know the brand of drum.
Neil.
On Wednesday, May 25, 2016, Neil N <musomuso@gmail.com> wrote:
> I cleaned the slots at wheel cylinder pistons and anchors then set top
> end of each new and old set of shoes at nearly the same point at wheel
> cylinder piston. Image: http://tinyurl.com/hlr335n
>