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drive shaft bike?

Old 09-02-10, 06:56 PM
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drive shaft bike?

While sort of looking for a new bike, I stumbled on this:


Looks interesting for sure, so I'm wondering if anyone has experience with it.
I have experience with an internal hub (on my 1971 Raleigh-built 3-speed), so it's more the drive shaft I'm curious about.

From an engineering standpoint, is it more efficient? durable?
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Old 09-02-10, 09:15 PM
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Before this thread gets out of hand. Do a little search for shaft drive on this site.
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Old 09-02-10, 09:37 PM
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They don't claim it is more efficient than a chain, just more efficient than other shaft drive systems. I think a chain drive is pretty efficient and from the way they talk about efficiency it almost sounds like the shaft is less efficient. Probably not by a great deal either way but a test ride should tell you for sure.

Internal hubs are generally considered bulletproof for winter riding since there is nothing but a simple chain and a pair of cogs exposed to the weather. You would think this system would be better yet since nothing is exposed. It is curious that they claim a life of only 6k to 8k miles. Similar gear drives in a car are expected to go 100k miles and more. I would think that if it is done right a system like this would last as long as the frame. It should be a good system for tough environments and I do find it interesting. It should make an excellent all weather commuter bike drive. I'd probably be more interested in it for a full sized bike for road and trail riding if it had the new 11 speed hub. The folding model with the 8 speed would have been enticing back when I bought my Dahon but I'm set for commuting now that I do have the Dahon. I'd guess that if they are well made they will attract a following.

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