classic motorcycle forum

Motorcycle Discussions => British Bikes => Topic started by: doughobbs on August 25, 2021, 08:10:30 PM

Title: Corrrect Speedo for a D3 Bantam
Post by: doughobbs on August 25, 2021, 08:10:30 PM

Hey folks,

Which scale is the correct one for a D3 Bantam (a D shaped smiths speedo) - 55, 65 or 70 mph? Am trying to find out for a friend with a D3 and we are seeing images of all three speedo's on the web!

thanks

Doug

Title: Re: Corrrect Speedo for a D3 Bantam
Post by: R on August 25, 2021, 11:28:27 PM

This would seem to indicate that the speedo for the D1 to D3 was the same.
https://www.classicbikepartscheshire.com/speedometer-tachometer-c41/bsa-bantam-d1-d3-genuine-smiths-speedometer-0-55-mph-refurbished-p3062 (https://www.classicbikepartscheshire.com/speedometer-tachometer-c41/bsa-bantam-d1-d3-genuine-smiths-speedometer-0-55-mph-refurbished-p3062)

The later 150cc and 175cc ones would likely require a few more mph on the scale ...
Hopethishelps.

Title: Re: Corrrect Speedo for a D3 Bantam
Post by: TGR90B on August 26, 2021, 09:58:25 AM

You can discount the 70mph speedo as that was reserved for the C12. I wasn't aware they made a 65mph job (could be wrong) so that leaves the 55mph one for the older Bantams (D1/D3).

Title: Re: Corrrect Speedo for a D3 Bantam
Post by: R on August 27, 2021, 02:11:24 AM

D14 Bantams apparently use an 80mph Smiths

https://www.classicbikepartscheshire.com/images/smiths-instruments-bsa-bantam-smiths-replica-speedometer-0-80mph-complete-with-fixings-p3638-7043_medium.jpg (https://www.classicbikepartscheshire.com/images/smiths-instruments-bsa-bantam-smiths-replica-speedometer-0-80mph-complete-with-fixings-p3638-7043_medium.jpg)

Title: Re: Corrrect Speedo for a D3 Bantam
Post by: Rex on August 27, 2021, 08:00:16 AM

But they were cheap round magnetic things, and not D shaped Chrono's.

Title: Re: Corrrect Speedo for a D3 Bantam
Post by: R on September 02, 2021, 10:38:09 PM

Quite so. But I was putting them in context.