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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Series 'A' Handlebar Levers
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<blockquote data-quote="A_HRD" data-source="post: 2158" data-attributes="member: 49"><p><strong>Series A Levers and Fittings</strong></p><p></p><p>Thank you to all those who have responded so far. I have it on good authority from ClevTrev that the 2 per side holding the pivot assembly to the bars are held by quite complex square-headed screws having a BSCy thread (1/4 I guess - or perhaps 3/16?). This is confirmed by a call to Bob Stafford who reckons the square variety existed until very early 1936. Thereafter they appear to have been cheesehead slotted screws. </p><p></p><p>And it appears that the levers are not 'handed'. I have since seen old pictures of the brake lever having an upside-down hex bolt and nut (nut on top). This would fit with Robert's observation too. </p><p></p><p>As regards the decompressor lever; Bob Stafford reckons these were of the very short variety - not like the long post-war ones. He can't be certain though; but both the A's he bought in the mid-1950s (1 Twin and 1 Comet) were fitted thus. </p><p></p><p>Further comment invited. </p><p></p><p>Regards, Peter Barker</p></blockquote><p></p>
[QUOTE="A_HRD, post: 2158, member: 49"] [b]Series A Levers and Fittings[/b] Thank you to all those who have responded so far. I have it on good authority from ClevTrev that the 2 per side holding the pivot assembly to the bars are held by quite complex square-headed screws having a BSCy thread (1/4 I guess - or perhaps 3/16?). This is confirmed by a call to Bob Stafford who reckons the square variety existed until very early 1936. Thereafter they appear to have been cheesehead slotted screws. And it appears that the levers are not 'handed'. I have since seen old pictures of the brake lever having an upside-down hex bolt and nut (nut on top). This would fit with Robert's observation too. As regards the decompressor lever; Bob Stafford reckons these were of the very short variety - not like the long post-war ones. He can't be certain though; but both the A's he bought in the mid-1950s (1 Twin and 1 Comet) were fitted thus. Further comment invited. Regards, Peter Barker [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Series 'A' Handlebar Levers
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