Thumper Club Forum

Technical => Bike Problems/Questions => Topic started by: mthee on November 02, 2019, 10:40:41 AM

Title: Speedo drive ratio
Post by: mthee 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! ;D

Title: Re: Speedo drive ratio
Post by: iansoady 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.