Setting in mm for Racing Ralph 29 x 2.25 for Polar

[jcza]

Dear friends, please help me. I don't have a tape measure or ruler and I'm very far from home. Need to insert into Polar.

 

Much appreciated!

[kennyg]

i run mine at 1.6 bar, 2290mm, it runs within a km of the GPS over 100km.

[Bianchi]

No expert, but it depends quite a bit on your tyre pressure too - I noticed this on my 29x2.1. Mine was 2275mm though - I set it using the double-distance tape-measure method.

[jcza]

Thanks guys! Needed it on Saturday at graveltravel. Ended up guessing and set it to 2135 which meant Polar showed 69km at the end instead of 79km. Will get a tape measure and do it properly. Felt like I was never going to finish!

[Mr SingleTrack]

Thanks guys! Needed it on Saturday at graveltravel. Ended up guessing and set it to 2135 which meant Polar showed 69km at the end instead of 79km. Will get a tape measure and do it properly. Felt like I was never going to finish!

remember to sit on your bike while marking the wheel distance... As mentioned, your tire pressure and weight plays a huge role.

Sorry about the spelling, I am not near my pc to check...

[jcza]

remember to sit on your bike while marking the wheel distance... As mentioned, your tire pressure and weight plays a huge role.

Sorry about the spelling, I am not near my pc to check...

 

Top tip

 

Thanks!