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Sturmey Archer 3-Speed Belt Drive
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- Опубликовано: 3 июл 2024
- I decided to upgrade my singlespeed belt-driven bike to a Sturmey Archer 3-speed internally geared hub. The conversion wasn’t really easy, but overall, I am satisfied with the results.
Link to Onshape model for the sprocket adapter:
cad.onshape.com/documents/1ac...
I grew up in the 60’s and always wanted a bike with a Sturmey Archer hub. Back then you found them on British bikes that as kids we called English racers. I never did get an English racer, or a Sturmey Archer hub, but I got a chance to ride them a fair bit back them, and they worked well.
Right. I have no idea why they were replaced by fragile derailleurs.
I know Shimano still has some Nexus 7 to 9 speed internal hubs but it's more niche now.
The clicking "freewheel" noise is normal when pedaling. This is true on 3-speed hubs like yours as well as most of those with more gears. This is because with internally geared hubs, the gears are always engaged and driving different freewheels at different speeds, and whichever one is going faster drives the hub, while the others freewheel. However, more expensive hubs like the Shimano Alfine and higher-end Nexus models will not make freewheeling noise because they use "roller clutches" which are equivalent in function to freewheels but don't make noise due to a different design principle. Also, shifting delay is normal until you ease off the pedals to allow the internal mechanisms to move to their new positions.
@@namdarbolour9890 thanks for explaining the clicking noises. Makes sense since the easiest gear is silent but the two faster gears make the noise. I have already gotten used to hearing it and it doesn’t really bother me. Would be nice to try a higher end hub sometime to see if the roller clutches also improve the engagement delay.
You're welcome. The roller clutches won't improve gear change delay, but they will reduce the slight lag from freewheeling to driving when you start pedaling again after coasting.
It's great to see all these Americans realize what a dumb fad single speeds were.
@@greenefieldmann3014 I know, but I still love my single speeds!