Touring Gear Inches Calculation

[sloe]

Touring Inches = Home Inches

times

Home Gradient divided by Touring Gradient ( in percent )

times

Home Kg divided by Touring Kg.

= Touring Inches.



WHERE



Touring Inches is the lowest gear inches you'll need to cycle up the steepest gradient you want to cycle up, on tour, at your normal climbing cadence. This ignores grinding and walking.

Home Inches is the gear inches you need to cycle up your favourite local hill at your normal climbing cadence.

Home Gradient is the gradient of said favourite local hill (in percent).

Touring Gradient is the gradient you'll want to climb at your normal climbing cadence (in percent).

Home Kg is your all-up weight when climbing aforementioned local hill.

Touring Kg is your all-up touring weight.



This neglects that we generally get fitter as we tour, but also that continental hills can be ... big.



The late lamented Sheldon Brown allows you to measure your inches here http://sheldonbrown.com/gears/



If some clever person could write this more elegantly, please do. But I think the sums are fine.

 

[vernon]

 

[clownfishrob]

I used to think I was good at maths but I must have lost it somewhere along the way.
+2

 

[Pottsy]

I assume sloe is talking about how to calculate what gear to use if touring on a fixed wheel or single speed bike to allow you to cope with terrain and baggage whilst away?