Author Topic: Snatching front brake(TLS)  (Read 2450 times)

Offline BSA500

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Snatching front brake(TLS)
« on: 23.09. 2015 20:04 »
Hi as per title my 8 inch twin leading shoe front brake is a tad-well-bloody dangerous and snatchy. When cool and damp it grabs like king kong at the slightest whiff of front brake use. Which in traffic is not good. Of course when warmed up it tends to fade and not give much feedback. I know most of the remedies but now I am going to really attack it(esp seeing as she's off the road for a few days as the chain snapped today-it never rains eh) so please chime in with your suggestions etc.
I will strip it down check the links /rods,clean the drum deglaze shoes if needed,camfer the leading edges etc etc.
thanks in advance Andy

Online morris

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Re: Snatching front brake(TLS)
« Reply #1 on: 23.09. 2015 21:13 »
What type of shoe lining are you using?
'58 BSA A 10 SA
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Offline duTch

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Re: Snatching front brake(TLS)
« Reply #2 on: 23.09. 2015 21:27 »

 Iwas going to suggest
Quote
,camfer the leading edges etc etc.
...but you got it covered *smile*
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
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Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #3 on: 24.09. 2015 08:41 »
Shoe lining is whatever the suppliers bond to the shoes,light brown if that helps *smile*. I will strip them and post pics. I noticed they should,according the the exploded images,have abutment pads but I don't think mine do. Again the strip and pics will help with that.

Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #4 on: 25.09. 2015 09:07 »
I think the pads in the pic (number 12 and 32  ) are missing,but I won't know until I pull the brake out. Link to pic below. That is the brake I have the 1968 tls

https://www.draganfly.co.uk/images/shop/a65/68/18.jpg

Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #5 on: 25.09. 2015 21:03 »
Well removed the brake shoes etc and no abutment plates so the shoes were not correctly positioned on the plate ever since I installed it(20+ years  *eek*). Here are some pics









Offline kiwipom

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Re: Snatching front brake(TLS)
« Reply #6 on: 26.09. 2015 02:12 »
hi guys, BSA 500, yes this is my one you can see the bits that you need,cheers
A10.G.Flash(cafe racer)Honda 250 vtr. Yamaha Virago XV920.

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Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #7 on: 26.09. 2015 09:34 »
Bloody surprised that  it worked at all. Found when I took it apart the connecting rod for the levers was a little bent. This is not the first time either so that is prob to do with the unequal braking forces ?

Online morris

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Re: Snatching front brake(TLS)
« Reply #8 on: 26.09. 2015 23:10 »
Shoe lining is whatever the suppliers bond to the shoes,light brown if that helps *smile*

The reason I was asking is because I recently replaced the aftermarket bonded shoes on the SA (full width hub) by the original shoes I still had lying around and which I relined with a set of nos Ferodo linings. It immensely improved the brake's performance in smoothness and stopping power.
'58 BSA A 10 SA
'52 BSA A 10 Plunger
'55 MORRIS ISIS
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Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #9 on: 27.09. 2015 11:25 »
Shoe lining is whatever the suppliers bond to the shoes,light brown if that helps *smile*

The reason I was asking is because I recently replaced the aftermarket bonded shoes on the SA (full width hub) by the original shoes I still had lying around and which I relined with a set of nos Ferodo linings. It immensely improved the brake's performance in smoothness and stopping power.

I shall sort out the plates etc and see how improved the stopping is. I have some spare shoes so if I need to I can have those relined  *smile*

Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #10 on: 28.09. 2015 11:56 »
Right as per usual the parts I need (37-2026 brake abutment pads) are not available-I have them on back order but its going to be at least 2 weeks if not more. Anyone know of a supplier who has these ???

Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #11 on: 03.10. 2015 20:21 »
I have had to order these from the USA so will update when fitted

Offline duTch

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Re: Snatching front brake(TLS)
« Reply #12 on: 04.10. 2015 00:02 »

 Took some detail the other day but work interfered with things, but if you need to make some, they're fairly simple
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia

Offline BSA500

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Re: Snatching front brake(TLS)
« Reply #13 on: 04.10. 2015 12:46 »
Thanks Dutch. I think that is something you can post as a sticky on the forum for all to see in case they run into the same issues. *smile*

Offline duTch

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Re: Snatching front brake(TLS)
« Reply #14 on: 05.10. 2015 00:42 »


 I thought I added this yesterday, so will anyway- and on the other page.

 I used the piece of paper and folded it around to;-
....show how a flat piece of 1/16" (1.6mm) sheet would look before folding, but if I had to make them, I'd use a bit of 1" SS RHS and fettle/'humour'  the folds *smile*

 I'll post in in your other thread too...when I find it
Started building in about 1977/8 a on average '52 A10 -built from bits 'n pieces never resto intended -maybe 'personalised'
Have a '74 850T Moto Guzzi since '92-best thing I ever bought doesn't need a kickstart 'cos it bump starts sooooooooo(mostly) easy
Australia