Levo Gen 2 27.5 on the rear, speedo recalibrate?

[Cavi]

So I put a 27.5 on the rear, and in theory the speedo should be slightly off. Am I correct on this assumption? Does the speedo read from the magnet on the rear wheel? I know I can change the wheel diameter in Blevo, but not in MC, I guess I have to take it in to the shop to change that. Or will changing it in Blevo change it in the MC as it might write to the bike itself?????

 

[maynard]

I want to know same thing. And if u change in Blevo . What do you change it too ? 2200 for 29 . What's 27.5 ?

 

[Zimmerframe]

Both the 27.5 and 29er "wheel size" will change quite considerably just depending on what size tyres you're running.

Ideally, you'd need to pick a point on the wheel/tyre - mark the floor. Roll it one revolution. Mark the floor - measure.

You can in threory work it out from tables, but each tyre brand ultimately has different sizing.

And then yes, on a Spesh (unless it's a 1.2 or 1.3) you'd need to get the bike shop to change the wheel size.

 

[Cavi]

yeah I found a chart that actually does diameter based on tire size Bike Computer – Tire Size Calculator – Berkshire Sports

 

[boBE]

I changed my SL to 27.5 wheels then took it to the bike shop to have the speedometer calibrated. It is accurate now.