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The most popular gear ratios are pretty close to a 55 inch, which just seems to feel best for most people. The number is derived from a simple formula: (chainring size / cog size) X wheel size. Another popular unit for measuring gearing is Roll Out in inches.
18 Μαΐ 2009 · A typical BMX gear ratio is 44/16, which equals 2.75:1, which equals 55 gear inches on a bike with 20" diameter tires. The gearing that came on your bike is very close to that (25/9 equals 2.78:1, which equals 55.6 gear inches).
14 Αυγ 2024 · The classic BMX gearing (44/16) actually has one of the ideal sprocket and cog combinations at 55 gear inches. Thus, even the modern gear ratios, although the sprockets are WAY smaller, have very similar gear ratios. Whoever came up with this gear ratio nailed it!
16 Απρ 2020 · Classic BMX gearing evolved over the years to be 44/16 on most pro sized 20″ BMX bikes, which works out to approximately 55 gear inches. The most popular gear ratios are pretty close to a 55 inch, which just seems to feel best for most people.
Crupi is a BMX Racing Company; pure and simple! The company was started to create better BMX racing components and after 40+ years, Crupi is still focused on BMX Racing components exclusively! ... Gear Ratio Chart/Rollout Chart. 20 x 1-1/8 Wheels (with 20 x 1" tires, 19.375" inflated diameter) ... 18 40.9: 42.0: 43.1 ...
Here is a handy tool for calculating your gear ratio. The formula to find the gear inches for your bike is simple. and then multiply by the diameter of the rear wheel.
How do you calculate gear ratios? The formula to find the gear inches for your bike is simple. Divide the number of teeth in the front sprocket, or freewheel, by the number of teeth in the rear sprocket, or freewheel and then multiply by the diameter of the rear wheel.
