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Cycle Monkey

Internal Gearing Specialists, Bicycle Distribution & Service Center

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Soma Wolverine Adventure Bike w/ Rohloff SPEEDHUB 500/14



This decked-out Soma Wolverine was built for a customer in San Jose, CA. The rider was looking for a rugged commuter bike that would be efficient on his daily trips to work, but would also offer the versatility to enjoy longer tours on the weekend and even a few cycling-oriented vacations. Soma’s Wolverine frame fit the bill as a sturdy option that is affordable, works well with a Rohloff hub, and is belt-ready.

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Tech Talk: Rohloff's "Through-Axle" A12 Hubs

In 2016, Rohloff introduced a new version of their renowned SPEEDHUB 500/14 14-speed internal gear hub that works with through axle frames. Dubbed the SPEEDHUB A12, Rohloff offers versions to fit frames with 12x142, 12x148, 12x177, and 12x197mm spacing. The SPEEDHUB A12 is nearly identical to the standard Rohloff SPEEDHUB 500/14, with the exception of how the hub connects to the frame.

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Classic Commuter: Rohloff Rivendell



This classically-styled commuter belongs to a local Bay Area customer who was looking for the convenience and reliability of modern components like dynamo lighting and internal gearing for his vintage-inspired Rivendell Sam Hillborne frame. 

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Using the Gates Carbon Drive App

Belt drive systems from Gates Carbon Drive offer a multitude of advantages over traditional, chain-driven drivetrains: Belts do not rust or require lubrication, offering year-round reliability with minimal mess and virtually no upkeep. You can simply wipe ‘em down after a messy ride and immediately be ready to roll again—no chain cleaner or removal necessary. Belts also last 5-10x longer than most chains and don’t stretch. As a result, belts and sprockets tend to wear at the same (significantly slower) rate.

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Calculating Gear Ratios with the Pinion Gearbox

New Pinion users often find themselves wondering which size front or rear sprockets to use with their Pinion gearbox, or how to compare Pinion gearing setups with a derailleur bike. Pinion gearing can be easily compared to external gearing using the internal gear ratios for the gearbox and the size of the front and rear sprockets.

Here is what you need to do:

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Calculating Gear Ratios with Rohloff SPEEDHUB

New Rohloff users often find themselves wondering which size front or rear sprockets to use with a SPEEDHUB 500/14 or how to compare different Rohloff gearing setups with a derailleur bike. Rohloff gearing can be easily compared to external gearing using the internal gear ratios for the SPEEDHUB and the size of the front and rear sprockets.

Here is what you need to do:

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