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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Gear Ratios. Which gears are fitted?
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<blockquote data-quote="timetraveller" data-source="post: 44653" data-attributes="member: 456"><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Just to make sure that all readers are familiar with this; the early Black Shadows had a gearbox internal ratio of 2.07:1 giving an engine to wheel ratio of 7.25:1. This allowed up to 70 mph in first gear causing consternation and high laundry bills among most other vehicles of the time. This ratio was found to be too high in slow moving traffic and after engine number 7076 all Shadows had the same first gear ratio as Rapides, 9.1:1 overall. There was also reputed to be a close ratio box available for racing (Lightnings) but many people believe that these never existed. However, among my bits and pieces, buried under the debris of years I believe that I do have such a gear cluster which would give an overall first gear ratio of 6.77:1. Any high first gear that one is likely to come across by chance nowadays is likely to be an early Shadow one.</span></span></span></p></blockquote><p></p>
[QUOTE="timetraveller, post: 44653, member: 456"] [SIZE=3][COLOR=#000000][FONT=Calibri]Just to make sure that all readers are familiar with this; the early Black Shadows had a gearbox internal ratio of 2.07:1 giving an engine to wheel ratio of 7.25:1. This allowed up to 70 mph in first gear causing consternation and high laundry bills among most other vehicles of the time. This ratio was found to be too high in slow moving traffic and after engine number 7076 all Shadows had the same first gear ratio as Rapides, 9.1:1 overall. There was also reputed to be a close ratio box available for racing (Lightnings) but many people believe that these never existed. However, among my bits and pieces, buried under the debris of years I believe that I do have such a gear cluster which would give an overall first gear ratio of 6.77:1. Any high first gear that one is likely to come across by chance nowadays is likely to be an early Shadow one.[/FONT][/COLOR][/SIZE] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Gear Ratios. Which gears are fitted?
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