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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Float Level 276's
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<blockquote data-quote="wld50" data-source="post: 11672" data-attributes="member: 502"><p><strong>276 carburettor throttle stop thread</strong></p><p></p><p></p><p></p><p>I've inherited a worn 276, in this case the throttle stop screw thread in the carburettor body is no longer viable. (I've read somewhere that the steel screw when unscrewed would have destroyed the thread in the alloy).</p><p></p><p>It seems worth trying to remake the right thread in the first place, I've been told by Hitchcocks that the thread is 1BA, (Can anyone confirm the thread/ size?) and Armacoil make 1BA helicoil inserts but only available in 50 packs, about a pound per piece. </p><p></p><p>Has anyone already invested/ wants to do the same and would like to share the pain ?</p><p></p><p>Alternatively, does anyone know a commercial organisation which offers a rethreading service for a 1BA thread into an alloy carburettor on a reasonably fast turn around?</p><p></p><p>As a temporary expedient I've used another, larger bolt, but it wobbles around, can't be good for the long term.</p><p></p><p>wld '50</p></blockquote><p></p>
[QUOTE="wld50, post: 11672, member: 502"] [b]276 carburettor throttle stop thread[/b] I've inherited a worn 276, in this case the throttle stop screw thread in the carburettor body is no longer viable. (I've read somewhere that the steel screw when unscrewed would have destroyed the thread in the alloy). It seems worth trying to remake the right thread in the first place, I've been told by Hitchcocks that the thread is 1BA, (Can anyone confirm the thread/ size?) and Armacoil make 1BA helicoil inserts but only available in 50 packs, about a pound per piece. Has anyone already invested/ wants to do the same and would like to share the pain ? Alternatively, does anyone know a commercial organisation which offers a rethreading service for a 1BA thread into an alloy carburettor on a reasonably fast turn around? As a temporary expedient I've used another, larger bolt, but it wobbles around, can't be good for the long term. wld '50 [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Float Level 276's
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