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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Anyone know anything about Auto Tempo 5" speedos?
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<blockquote data-quote="Hugo Myatt" data-source="post: 6422" data-attributes="member: 99"><p>No knowing the symptoms your 5" speedo is displaying the following may be of no use at all. However,the drive to my garage has a long and severe downward slope which requires me to wheel the bike down backwards over quite some distance. For some time I was plagued with an erratic speedo and frequent breakage of the cable. The culprit was the right angle gearbox on the back of the speedo. Pardon my lack of correct technical terms but there is a scroll type gear engaging with a helical cut gear. After about 20 or so turns of the cable backwards, one gear in the box would tend to drive the other one up until it seized solid against the end cap and so snapping the cable. This was a known problem with early Shadow speedo gearboxes. In 1998 I sent the gearbox to a company called Speedograph Richfield Ltd., Rolleston Drive, Arnold, Notts., NG5 7RJ. They modified the box and, touch wood, I have had no further trouble. I do not know whether this company still exists. I believe the modification involved inserting a small ball bearing between the end cap and the gear to take this upwards thrust.</p></blockquote><p></p>
[QUOTE="Hugo Myatt, post: 6422, member: 99"] No knowing the symptoms your 5" speedo is displaying the following may be of no use at all. However,the drive to my garage has a long and severe downward slope which requires me to wheel the bike down backwards over quite some distance. For some time I was plagued with an erratic speedo and frequent breakage of the cable. The culprit was the right angle gearbox on the back of the speedo. Pardon my lack of correct technical terms but there is a scroll type gear engaging with a helical cut gear. After about 20 or so turns of the cable backwards, one gear in the box would tend to drive the other one up until it seized solid against the end cap and so snapping the cable. This was a known problem with early Shadow speedo gearboxes. In 1998 I sent the gearbox to a company called Speedograph Richfield Ltd., Rolleston Drive, Arnold, Notts., NG5 7RJ. They modified the box and, touch wood, I have had no further trouble. I do not know whether this company still exists. I believe the modification involved inserting a small ball bearing between the end cap and the gear to take this upwards thrust. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Anyone know anything about Auto Tempo 5" speedos?
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