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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Alloy brake plate dimensions Help….
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<blockquote data-quote="timetraveller" data-source="post: 149147" data-attributes="member: 456"><p>I could measure up one of the new machined from solid ones but whether they are relevant to your castings I don't know. One thing which should be realised is that the holes in the centre of the original Electron plates was larger that the diameter of the hollow axle. The reason for this was so that upon assembly one could apply the brakes to centre the shoes within the drums before tightening the tommy bar axle. I tried to persuade the manufacturer of the new plates to do this but without success. The disadvantage of this is that upon dissassembly there is a tendency for the whole lot to fall apart and onto the floor. Rather like the original cup and cone head races. One person I know who used the new type brake plates, but with the 8" diameter brakes, machined back the centre thickness of the brake plate and then used a nut to tighten it up. Let me know if you think the measurements of the new plates is of any use to you.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 149147, member: 456"] I could measure up one of the new machined from solid ones but whether they are relevant to your castings I don't know. One thing which should be realised is that the holes in the centre of the original Electron plates was larger that the diameter of the hollow axle. The reason for this was so that upon assembly one could apply the brakes to centre the shoes within the drums before tightening the tommy bar axle. I tried to persuade the manufacturer of the new plates to do this but without success. The disadvantage of this is that upon dissassembly there is a tendency for the whole lot to fall apart and onto the floor. Rather like the original cup and cone head races. One person I know who used the new type brake plates, but with the 8" diameter brakes, machined back the centre thickness of the brake plate and then used a nut to tighten it up. Let me know if you think the measurements of the new plates is of any use to you. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Alloy brake plate dimensions Help….
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