Another update for you DRZophiles.
Big thanks to Rushy for the
Trail Tech Vapor speedo/tacho.
Took it out for a test today to calibrate it to my GPS. After a bit of button pressing I settled on 2112 as a circumferance figure.
The manual has 2110 as the default setting so I tried a few circumferance settings either side of that (1mm apart, 2109, 2111 & 2112)
2112 resulted in this...
..so pretty happy with that!
I'll have to re-calibrate it when I put the SM wheels back on but it's very easy to do.
In daylight it doesn't need the backlight so I'm going to put a bullet connector in the line & leave it disconnected. If I ever ride in the dark & need it on I'll connect it back up but it runs fine on the 3v internal battery.
A doddle to fit, the most time consuming part was finding a place to relocate my GPS & fabricate a new bracket. (picture below, right hand corner)
Bit worried about accidently splashing it with fuel when I fill-up though.