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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman Box Again
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<blockquote data-quote="brian gains" data-source="post: 115501" data-attributes="member: 3153"><p>just to bring this saga to a conclusion, after no end of kerfaffiing about the drama that started with 4th gear disappearing out of the blue, the gearbox casing failing at the drive side circlip retaining groove and then the lurching 1st gear problem having had not a single issue with 1st prior to this. Not suspecting there was anything wrong with 1st and thinking it was an end play issue on the shaft I finally replaced the lay shaft gear, here are the new and old for comparison. </p><p></p><p> .[ATTACH=full]32051[/ATTACH]</p><p>I would say that I inspected for wear and with nothing to compare the failed one with I expected to see wear from the driven side of the dogs only and there was what I thought some minimal wear on the leading crest of the dogs and on the stand everything engaged quite happily however with the benefit of comparison the all over wear seems quite excessive.</p><p>I would saythat there had never been any inkling of 1st gear failure and that it would seem that this wear occurred in a nano of a second when the shafts were slopping around due to the mainshaft not being registered correctly. Fingeres X'd only service items for the rest of 2020 and I hope someone at some point can benefit from my experience. ps the young woman who gave me a thumbs up and jumped up and down as I took it for the initial shake down run up the road doesn't know how close she came to getting a big hug and a kiss.</p></blockquote><p></p>
[QUOTE="brian gains, post: 115501, member: 3153"] just to bring this saga to a conclusion, after no end of kerfaffiing about the drama that started with 4th gear disappearing out of the blue, the gearbox casing failing at the drive side circlip retaining groove and then the lurching 1st gear problem having had not a single issue with 1st prior to this. Not suspecting there was anything wrong with 1st and thinking it was an end play issue on the shaft I finally replaced the lay shaft gear, here are the new and old for comparison. .[ATTACH type="full"]32051[/ATTACH] I would say that I inspected for wear and with nothing to compare the failed one with I expected to see wear from the driven side of the dogs only and there was what I thought some minimal wear on the leading crest of the dogs and on the stand everything engaged quite happily however with the benefit of comparison the all over wear seems quite excessive. I would saythat there had never been any inkling of 1st gear failure and that it would seem that this wear occurred in a nano of a second when the shafts were slopping around due to the mainshaft not being registered correctly. Fingeres X'd only service items for the rest of 2020 and I hope someone at some point can benefit from my experience. ps the young woman who gave me a thumbs up and jumped up and down as I took it for the initial shake down run up the road doesn't know how close she came to getting a big hug and a kiss. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman Box Again
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