Bonneville America Forums Forums Technical Forums Accessories Bonnie Speedo

Just wondering if anyone out there knows if the Bonnie speedo works with the speedmaster setup as I am thinking of getting a bracket made up for a bonnie speedo and fit in on the Speedmaster.

Can tell you in 2 Weeks - doing this right now but the Garage is to cold and the cable is missing...

Dan

Speedometers are calibrated to specific tire circumferences, if you can find and mount a front tire to your Spdy that is the same actual circum. as a Bonnie, than you can assume an accurate readout at travel. To answer your question, research Bonnie as built Specs. and find out if the front tire is similar in size and your query will be resolved. I was able to use a TBS 17 inch front wheel and maintain a factory ratio by mounting a fat 130/90-17 tire, the circum. of the tire worked out to 3/8ths of an inch less than the OEM 18 incher and my speedo reads out close enough for me. If you want perfection though, go get an Acewell electronic.

If possible try to get the speedo of a thruxton - it has an 18incher frontwheel.

Dan

well mine is in the workshop after my little get off and I am awaiting some parts for it

just go to the dealer and measure the front tire , might be hard with the fender so you could measure the radius and then measure the radius on your bike. If they are the same the reading should be correct. As far as mounting goes that you would have to do, might have to make a mount might not.

got an idea for a mount so now all I have to do is a little more research.

Thanks guys

There some adapters out there that will let you connect an analog speedo to a digital sensor (Magnet sensor).