Bike Touring Gear Inches

The sturmey archer brompton bwr takes two sprockets but other models are included in the list for the benefit of tinkerers see discussion.

Bike touring gear inches.

Can a 1x. You don t want to miss anything. That isn t quite right since the 700cx42 tires are more like 28 in diameter. That is a whopping 133 of the goal.

As in a car low gearing is for going up hills and high gearing is for going fast. Given that touring triple cranksets 48 36 24. Riding the gdmbr and even on the northern stretch of the natchez trace parkway i got down to 3 5mph on steeper climbs using 17 1 gear inches. Here is the most technical aspect i am going hit you with about touring bicycle gearing.

Values for gear inches typically range from 18 very low gearing via 70 medium gearing to 125 very high gearing. Gear inch comparisons across drivetrains. Gear inches understanding your gear ratios. 80 is green 50ish 80 blue and below 50 red.

It s basically derived from a formula and provides an indication of the mechanical advantage of different gears. We ve also been in that situation and yes we made the mistake of buying too many things. Gear inches is gear ratio times the diameter of the rear wheel. On 700c x 38mm tires this gives you a low end of 19 8 gear inches and a top end of 119 8.

So if for example our straight gear ratio is 44 16 and the rear wheel has a standard overall diameter of 26 then the calculation would be. So we get 26 3 gear inches. The sram sachs 3 x 7 3 x 8 3 x 9 3 x 10 and the sturmey archer cs rf3 and cs rk3 are the only recent current production internal gear hubs designed to use rear sprocket clusters. On a touring bike 18 is a great low gear and 113 is a good high gear.

Gear inches is one of several relative measures of bicycle gearing. Colors group similar values. The higher the gear inches then the harder it will be to pedal. Too high tech for you.

A mix of shimano alivio and sora the 520 has 48 36 26t chainrings mated to an 11 36t cassette. It has disc brakes an aluminum fork and yes a triple. The lowest that bike will go is 25 3 gear inches. The higher the gear inch number the farther your bike can travel on one revolution of the crank.

What are gear inches. When planning your first tour on a bicycle it is very easy to go crazy about buying all sorts of bike touring gear for it. 26 x 44 16 giving us 71 5 gear inches. When you are using one of your front chainrings and shift to one of your rear cogs you are changing the gear inches of your rear wheel.

The trek 520 updated for 2019 is about as modern as a classic touring bike can get.