Twin leading shoe brakes lock on
Hi Juel. I bought mine (from PV) about a year ago. The short answer is "b*llsh*t". It's the sort of thinking that belongs to an era when bikes had ineffective front brakes and it was believed that application of a front brake would inevitably throw the rider over the bars. Yeah, right.
Nor has it ever happened on any of the 2ls brakes I've used on road or track. (Suzuki, Honda, 8" home-made Norton, 8" Manx Norton, all two shoe, 10" Kawasaki H1R, 9" Menani, and of course 7" Vincent, all 4-shoe. And a Seeley, a 9" four shoe sls brake, but with a clever little linkage to get more servo than sls provides.
2ls brakes certainly hit fast, but 1) that's what I wanted, a brake that works RIGHT NOW, not half a wheel rotation later, and 2) that's only ever been a problem at walking pace on gravel. It's a problem with discs too - at walking pace on gravel.
I don't understand why anyone would want single leading shoe brakes anyway. One shoe servos itself on, and the other shoe servos itself OFF. Where's the problem in having brakes that work? You can buy a 2ls replacement brake for virtually any classic bike originally fitted with an inadequate (but cheap to make) sls one, and VOC decides to market a one inch bigger sls one. Why isn't anyone marketing Norton, Triumph and BSA single leading shoe brakes an inch bigger? Because they're not as smart as us?
What is the truth about the rumor I have heard that Twin Leading Shoe Brakes can lock-on and spill you off? Just the facts 'mam.