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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
5 Speed Quaife
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<blockquote data-quote="clevtrev" data-source="post: 40932" data-attributes="member: 187"><p>Not so, that the 5 speed needs more travel. The angle between first and </p><p>fifth, is exactly the same as the angle between first and fourth on the </p><p>standard box. Near enough 148 degrees.</p><p>With a bevel gear there is only one tooth engaged. </p><p>As for the job of the pin, it`s not only for the spring, but it is the limit stop, to prevent the bevel gears from disengaging.</p><p>I and others have found quite a few Twin gearboxes that have never been in either first or top, since they left the works. Invariably this has been the result of the bevel gear in the camplate featuring a machining fault. The relationship of the engaging tooth, being out of sync with the location in the plate, or it could be the hole in the plate. </p><p>[ATTACH]1718[/ATTACH]</p></blockquote><p></p>
[QUOTE="clevtrev, post: 40932, member: 187"] Not so, that the 5 speed needs more travel. The angle between first and fifth, is exactly the same as the angle between first and fourth on the standard box. Near enough 148 degrees. With a bevel gear there is only one tooth engaged. As for the job of the pin, it`s not only for the spring, but it is the limit stop, to prevent the bevel gears from disengaging. I and others have found quite a few Twin gearboxes that have never been in either first or top, since they left the works. Invariably this has been the result of the bevel gear in the camplate featuring a machining fault. The relationship of the engaging tooth, being out of sync with the location in the plate, or it could be the hole in the plate. [ATTACH]1718.vB[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
5 Speed Quaife
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