speedo on 700 way out

[StumpyFingers]

Before I had my rear tyre changed the error in speed was about 9% (on a TA 700) and the odometer was less at about 5%. With the new Trailwing on the error was reduced to about 5% and 1%. This makes sense with reduced circumference on the old tyre.

Is your speedo calibrated off the rear?
It should not make a difference if the rear tyre is changed only the front.

[Delboy 777]

I thought the speedo on a 700 was taken off the gearbox and that it is electronic. If this is the case and your fussy enough, you could fit a speedo healer.

[dubhe]

^ pretty sure it is the grarbox, which is why when the motor was driving a 'smaller' rear tyre, it thought I was going faster than I actually was.

[MandoBear]

The speedo on the 700 is, I believe, taken off the rear wheel by the ABS sensor - which is also present on the non-ABS version of the bike.

As noted already, I think the 10% or so over reading is pretty normal. My old Varadero did it, my TA700 does it, may partner's Nissan does it... even educated fleas do it....

[jasonbc]

Is your speedo calibrated off the rear?
It should not make a difference if the rear tyre is changed only the front.

Shouldn't make any difference as the speed sensor is in the gearbox

[dubhe]

^ it doesn't matter where the speedo drive is, either on the gearbox or on the rear wheel. A worn tyre means a smaller wheel, and the speedo doesn't know this so will read higher.