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Speedo drive ratio
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Topic: Speedo drive ratio (Read 798 times)
mthee
Posts: 1884
Speedo drive ratio
«
on:
November 02, 2019, 10:40:41 AM »
So I'm looking at this speedo for the XBR and like this simple one;
https://www.motorcycleproducts.co.uk/mini-speedo-60mm-mph-white-face-tripmeter-p-2565.html
The pic shows the ratio as 60mph=2000rpm which I believe is the US standard 2:1. But then the description says it's 2.1:1 which I think is the XBR's ratio in which 60mph=2240rpm. Maybe a simple typo?
Can anyone confirm the XBR ratio and whether the info given in the ad is correct about Japanese bikes using a standardised ratio of 2.1:1? If this is true, a whole used speedo market opens up for consideration...
My inner handbag needs a speedo with a white face to match the bike's new colour scheme!
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Fear of the unknown does not mean the unknown needs to be feared
iansoady
Full Member
Posts: 1699
Re: Speedo drive ratio
«
Reply #1 on:
November 02, 2019, 12:08:45 PM »
I think it's a typo - it says 2:1:1 which is meaningless. I would guess it's actually 2:1.
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Ian.
1952 Norton ES2
1986 Honda XBR500
1958(ish) Grumph.....
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