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Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
gearbox/axle combination AND wheel size table?

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gearbox/axle combination AND wheel size table?
JonE Offline
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#1
28-04-2021, 04:04 PM
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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Renaud Offline
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#2
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?
http://tricyclecaristes.1fr1.net/t1032-le-sandford-de-mon-pere
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JonE Offline
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#3
28-04-2021, 04:51 PM
yes - that sort of stuff..!
excel even better because presumably I could then alter it for adding back axle ratios...
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Renaud Offline
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#4
28-04-2021, 06:27 PM
I'll be pleased to do that. I need only to collect datas.
http://tricyclecaristes.1fr1.net/t1032-le-sandford-de-mon-pere
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Charles P Offline
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#5
28-04-2021, 06:44 PM (This post was last modified: 28-04-2021, 06:53 PM by Charles P.)
Try this

https://www.dropbox.com/s/43ct6fxe9no5sk...s.xls?dl=0
Hopefully the link works
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Renaud Offline
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#6
28-04-2021, 07:08 PM
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.
http://tricyclecaristes.1fr1.net/t1032-le-sandford-de-mon-pere
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JonE Offline
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#7
28-04-2021, 08:05 PM
Renaud - thank you for enthusiasm but check out Charles' post - it may already all be done!!
Thanks all - will get reading....
https://ulster7.wordpress.com https://sevenrk.wordpress.com/
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David Stepney Offline
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#8
28-04-2021, 08:49 PM
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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Ian Williams Offline
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#9
28-04-2021, 08:56 PM
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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Chris KC Offline
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#10
28-04-2021, 10:36 PM
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.
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