Close ratio 4 speed box

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Bevel bob
Posts: 1097
Joined: Thu Apr 15, 2010 8:01 am
Location: Bromley Kent UK.

Close ratio 4 speed box

Postby Bevel bob » Wed Jul 28, 2021 5:06 am

Were any early single 4 speed roadsters sold new in the late 1950's with close ratio boxes ?, were parts availiable to convert ?.
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Rick
Posts: 340
Joined: Thu Nov 11, 2010 1:12 am
Location: Northern Plains, USA

Re: Close ratio 4 speed box

Postby Rick » Fri Jul 30, 2021 6:13 pm

The first 175s had a closer ratio transmission, but they're hard to find, and the F3, but not really a 'roadster'- will attach part of an old spreadsheet that I think is accurate.
Rick
ratios.png
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Bevel bob
Posts: 1097
Joined: Thu Apr 15, 2010 8:01 am
Location: Bromley Kent UK.

Re: Close ratio 4 speed box

Postby Bevel bob » Fri Jul 30, 2021 9:38 pm

Thanks Rick, I will pass that on , Do you think that later 175's had wider ratio boxes than the early 1957 bikes. ?.
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