Topica Loopframe_Guzzi Archive


Subject: RE: brake sanding

Author: Ray Hale

Date: Mar 19, 2005, 5:17 AM

Post ID: 1718567712



Bruce,
many thanks. Great explanation. I'm not a cheap bastard but like Dave
Richardson (stated in his dedication to his father in Guzziology) I am
Scots/Irish and if I can learn to do it myself, I'd rather.
Unfortunately my step-father couldn't change a light bulb without
hurting himself so I've learned by trial and much error and from my
friends, like here. Thanks again.
Ray


Bruce Giller wrote:
 
Doesn't Vintage Brakes (http://www.vintagebrake.com/) in Ca. do this
sort of
work? Send them your complete wheel and shoes and they will do all the
work.

But for those who want to do arc the brake shoes to the drum:

1. obtain some 80 grit sandpaper with a sticky back
(you can find strips of sandpaper at your local
auto paint store)
2. line the inside of the brake drum with one layer of
the sandpaper (have to cut the paper for width)
3. pencil on hatch marks over the entire width
and length of each shoe
4. assemble wheel back on the bike
5. spin wheel and apply brakes a few times to sand down
shoes
6. remove wheel and inspect pencil marks. If some of the
marks are still there, repeat Steps 3-5 until the
pencil marks are done
7. remove paper from the drum and clean out the drum. This can
really
leave a pile of sanded-down shoes, especially if the shoes
are new

And on the front wheel, you want to make sure that the two leading shoes
are
contacting the drum at the same time.

1. remove the metal rod connecting the two splined levers for each
shoe.
It has a "forked" held in by a small pin with a cotter pin.
2. hold the brake lever to where the front shoe is contacting the
drum
3. at the same time, manually make the rear shoe contact the drum by
pulling back
on the rear brake shoe splined lever
4. adjust the length of the connecting rod for a tight fit between
the two shoes.
probably won't get a perfect fit due to the large adjustment
distance. You
have to turn the forked end 180 for each adjustment. I made
mine a bit tight
to compensate for future shoe wear
5. now when you pull on the front brake lever, the two shoes will
contact at the
same time.

Bruce

'72 Eldo


-----Original Message-----
From: Ray Hale [mailto:ray.-@sfcc.edu]
Sent: Friday, March 18, 2005 9:50 AM
To: Loopfram-@topica.com
Subject: brake sanding


Ok, now onto the brakes. I've assembled both front and rear. I'd like to

do some sanding to make a better fit. Can't find anyone around here to
cut drums. Is there a method to mark shoes while spinning in the drum to

see high spots? A friend mentioned talcum powder. Haven't tried yet.
Ideas? I can certainly hear the rubbing come and go as I spin them. Do
you suppose this can be somewhat accurately assessed on the bench
without the wheel buttoned up to the chassis and axles?
Ray

pax sine tedio
73 Eldo "19"



pax sine tedio
73 Eldo "19"

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