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#827433 10/21/20 10:42 pm
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I have a front wheel I think is a 1967 with a 9" SLS brake plate.
Is there a TLS brake available that fits?


1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
1960 Harley Servi-Car
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Nick H #827459 10/22/20 6:43 am
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It’s more likely to be an 8” SLS brake, yours should have the flanged drum (where one side of the spokes come out of a flange on the brake side and the other side come direct out of the drum.

If this is the case, an 8” TLS brake plate (with shoes and associated hardware) will go straight on. If you get the 69-70 type you won’t need to change your brake cable.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

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Nick H #827467 10/22/20 12:21 pm
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Allen, he also needs to know about the difference in width of the forks, which changed 1n 1969 when Triumph introduced the '69-70 brakes.

The '68 brake WILL swap right in, but it comes with that long cable (It's the brake Triumph introduced on their Thruxton racers in '67)

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Originally Posted by Irish Swede
Allen, he also needs to know about the difference in width of the forks, which changed 1n 1969 when Triumph introduced the '69-70 brakes.

The '68 brake WILL swap right in, but it comes with that long cable (It's the brake Triumph introduced on their Thruxton racers in '67)

Thanks Irish, I didn’t know there was a change. Interesting that the 68 brake plate fits though. On the Beeza either will fit without modification.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

Nick H #827470 10/22/20 1:00 pm
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Fork width change was for larger tyres, the 67 with the flanged hub will take the TLS, some refinement of the stub that locks the brakeplate from turning may be needed.

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Nick H #827472 10/22/20 1:47 pm
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That's good news. This tire came without shoes, springs, lever etc. The plate measures 9.25" but the drum is 8".

WeaselFrontbrake.jpg WeaselFrontbrake2.jpg

1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
1960 Harley Servi-Car
Nick H #827476 10/22/20 3:00 pm
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I put a 1969/70 TLS front brake assembly on my 1967 T120R years ago. It was an easy bolt in swap. I did have to fabricate a spacer to adjust for cable length to use an existing cable. Stopping abilty is greatly enhanced. A recommended swap.

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Nick H #827489 10/22/20 8:56 pm
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Nobody's mentioned but if you have a later wheel with complete brake you can swap the spindle for the shorter one

Nick H #827497 10/23/20 12:29 am
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Found a decent one on eBay. So the same brake would work on my 67 BSA?


1966 BSA Lightning
(2) 1967 Triumph "Choppa"s
1974 Indian ME125
1960 Harley Servi-Car
Nick H #827520 10/23/20 6:53 am
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That depends on the type of front brake already on your BSA, if it has a screw in spindle it's a definite no.

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Nick H #827522 10/23/20 7:42 am
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BSA used the triumph hub from 68 on (least for the TLS braked bikes) the half width QD drum won’t take the TLS brake plate. The early full width hub will, but will need the brake plate spacing out or the wheel spikes offsetting to make it fit


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (undergoing restoration)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

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Hi,

Originally Posted by kommando
Fork width change was for larger tyres,
Originally Posted by Allan G
BSA used the triumph hub from 68 on (least for the TLS braked bikes)
Larger (3.50 vs. 3.25) front tyre was fitted to T120TT, TR6C and T100C from '67, Triumph fork legs were 6-1/2" centres 'til '69.

Complete Triumph 8" TLS and 7" SLS hubs/brakes were used on BSA's from '68 (the 7" SLS certainly on the new-for-'68 B25 and C25). Both hubs used the W1641 spindle, from the Triumph 6-1/2" centres forks; however BSA fork legs were 6-3/4" centres, which necessitated '68 one-year-only sliders.

More likely Triumph forks were increased to 6-3/4" centres for fewer one-off slider parts?

Regards,

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