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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Installing a Front Disc Brake on a Series ‘C’
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<blockquote data-quote="andrew peters" data-source="post: 94034" data-attributes="member: 3776"><p>60s and 70s Harleys had a hydraulic rear drum... a single leading shoe, it really was no better than the mechanical drum, they stuck with the big mechanical drum on the front... Harleys really aren't a good example to use when thinking of good brakes, they had large drums that were hopeless, in fact a performance mod in the US was to remove excess weight and who needs a heavy brake that doesn't do much anyway, especially as American racetracks require little braking, referring to Board Track to Flat Track.. (I have a '54 Panhead that I've put a disc on as I got so close to crashing so many times) Even when Harley fitted the Massive brake calipers on a 10" disc and 5/8 bore master cylinders they were still dire! So there is proof size isn't important, a caliper off a truck and it still doesn't stop! </p><p>I suggest hydraulic drums were never popular on motorcycles due to the size of (available) components, (the industry will usually source what is available from sub contractors, ie Brembo) the complexity of a hydraulic system and bottom line, cost!</p></blockquote><p></p>
[QUOTE="andrew peters, post: 94034, member: 3776"] 60s and 70s Harleys had a hydraulic rear drum... a single leading shoe, it really was no better than the mechanical drum, they stuck with the big mechanical drum on the front... Harleys really aren't a good example to use when thinking of good brakes, they had large drums that were hopeless, in fact a performance mod in the US was to remove excess weight and who needs a heavy brake that doesn't do much anyway, especially as American racetracks require little braking, referring to Board Track to Flat Track.. (I have a '54 Panhead that I've put a disc on as I got so close to crashing so many times) Even when Harley fitted the Massive brake calipers on a 10" disc and 5/8 bore master cylinders they were still dire! So there is proof size isn't important, a caliper off a truck and it still doesn't stop! I suggest hydraulic drums were never popular on motorcycles due to the size of (available) components, (the industry will usually source what is available from sub contractors, ie Brembo) the complexity of a hydraulic system and bottom line, cost! [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Installing a Front Disc Brake on a Series ‘C’
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