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World Bicycle Relief explains that its Buffalo bicycles are designed to be "extremely durable to serve the needs of people who travel long distances over rugged terrain with heavy cargo in some of the world's harshest environments." With that in mind, simplicity and ruggedness are absolutely critical, and the redundant chain system is designed to provide a high/low gear solution that involves as few breakable, externally mounted parts as possible. These bikes are being delivered to places that don't have access to bicycle shops or spare part overnighting, so making something that's as tough and easy to repair as possible is an essential part of WBR's job.

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[-] TDCN@feddit.dk 2 points 6 days ago* (last edited 6 days ago)

Use a belt drive instead. They are super strong and dont get elongated over time. ~~Otherwise use a shaft driven axle with oil submerged gears. That shit never breaks~~

Edit: i don't understand why people down vote? A well maintained bike chain can only run between 3000-8000 km at best and that's under good conditions. A belt drive can easily run 20.000 km and some stories of over 40.000 km and can run In mud and snow without trouble. It does not need any lubricant and only a little water to clean it now and then.

For shaft systems i see that they are less developed for bicykles. On motorbikes it's more common and it never breaks.

Source for 40.000 km on a belt drive: https://www.cyclingabout.com/belt-drive-better-than-chain-drive-bicycles/ ~~___~~

[-] whyNotSquirrel@sh.itjust.works 5 points 6 days ago* (last edited 6 days ago)

Never seen a shaft driven axle used in those conditions, I've only seen it in a city where the roads are smooth

[-] TDCN@feddit.dk 2 points 6 days ago
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this post was submitted on 27 Dec 2024
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