[DieTrying]

Ok, my bike is geared down 1 and up 2 and i'm gonna go up 2 more in the rear, but my speedo is already off by about 15mph at normal freeway speeds, and it will be way off when i go up 2 more, is there a way to recalibrate the speedo/odometer to compensate for regearing?

Thanks!

 

[ECC3]

What you need is the YellowBox by Black Robotics

 

[raz_biker]

Or a Sigma bicycle computer