SF - Brake Shoes

Haggis

Haggis

Hero member
Location
UK
Hi All

I'm wanting a bit more from my SF(0) front brake. 1972 - Laverda drums.

All the operating mechanics are optimised, only remaining thing is coefficient of friction betwixt ye olde shoe and ye olde drum.

Anyone out there know of good shoes? Who supplies the sticky-nippy-grippyest? Maybe something with a modern high coeff lining?  I think my linings are old and hard.

Cheers

Paul
 
Have you chalked/sanded/repeat until perfect contact is achieved with the drum?
 
Paul H said:
Hi All

I'm wanting a bit more from my SF(0) front brake. 1972 - Laverda drums.

All the operating mechanics are optimised, only remaining thing is coefficient of friction betwixt ye olde shoe and ye olde drum.

Anyone out there know of good shoes? Who supplies the sticky-nippy-grippyest? Maybe something with a modern high coeff lining? I think my linings are old and hard.

Cheers

Paul
Click to expand...

Very possible, Paul.

I have all my brake shoes re-lined by an outfit that do mostly lorries, tractors and the like.  They have a nice soft lining material from Jurid that they use for bike brakes, am very pleased with it.  I have them fit a thicker lining, this allows me to machine it precisely to the drum diametre.  The Lav duplex can be a really powerful brake if carefully set up! 

piet
 
Thanks Grant. yep, as a long term sufferer of Bultaco brakes, I'm a dab hand at that. Shoes are getting full contact.

Thanks Piet, you are right as ever, a custom reline is the best way to go. My thumb nail test shows the current linings as somewhere between bakelite and mahogany.

Paul
 
hi paul, i can remember ferodo at new mills /glossop area doing race drums for lads ,don't know if they still doit or even still there.
regards andy ps stay away from the black sticky linings.
regards andy
 
I had a problem with the brakes on my 'twinshock class' motocross bike.
Front brakes have to be drum and they were terrible....this is what I did;....
Stripped,  cleaned and greased the linkages - no change
new brake cable - no change
new grooved shoes were bought - no change
stripped front wheel and put hub in lathe - no machining required as internal brake contact surface area was not distorted enough (not oval as expected)
Built new shoes in situ' on brake plate - mounted whole assembly in the lathe and skimmed the new shoes - WOW!!!
what a difference. My bike has single leading shoes but the stopping power must be better than when the bike was new.........
Andy
 
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