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I know the common standard and aftermarket gearbox/ gear cluster choice tables posted on the forum in the past... and I know the Williams book has the wheel factors for 15" up to 19" in all tyre sizes.
I just wonder has anyone already produced a table for comparing ALL the variables? Or at least some combinations?
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28-04-2021, 04:24 PM
(This post was last modified: 28-04-2021, 04:24 PM by Renaud.)
Hi Jon,
Would you mean an Excel, or other, file with gearboxes and tyres combinations? giving speed versus rpms?
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yes - that sort of stuff..!
excel even better because presumably I could then alter it for adding back axle ratios...
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I'll be pleased to do that. I need only to collect datas.
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Oh I WOULD of course include back axle ratio!
I believe I can find everything in Bill Williams?
If you have more data available just direct me please.
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Renaud - thank you for enthusiasm but check out Charles' post - it may already all be done!!
Thanks all - will get reading....
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Try appendix 2 of Bill Williams book “Austin Seven Specials. This contains everything you would want to know on the subject.
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There was a good section on the Speedex site relating to gear ratios, wheel sizes and engine revs. worth looking at if its still there.
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There was Ian, though if memory serves me well it contained an error in the ratios for the crash 4-speed box, might be worth double checking the numbers.