Rag joint or hub adapter the only options?

Discussion in 'Wheels, Brakes and Suspension' started by PsychDoc, Oct 22, 2019.

  1. PsychDoc

    PsychDoc Member

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    I have a 3 speed Sturmey Archer rear hub- love it- but its about 2.125 diameter and has a slight 'hourglass' shape so I don't think a hub adapter will work, and I refuse to use a rag joint. are there other options or do I need to give up 3 speed and use ? a coaster single speed? help please
     
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  2. kelly dean

    kelly dean Active Member

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    a good machinist could turn one up , the only other option that comes to mind is using a jack shaft shift kit...... kelly
     
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  3. PsychDoc

    PsychDoc Member

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    I was afraid of that. A good machinist = $$$
     
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  4. waynesdata

    waynesdata Active Member

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    @PsychDoc you have more options. If the hub is disc you can do disc mount. That is a more stable option than Rag joint or hub adapter. You can also do a jack shaft setup also better than Rag joint or hub adapter. Jack shaft allows for fat tires and rear disc at same time.
     
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  5. indian22

    indian22 Well-Known Member

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    The disc rotor bolt pattern on the "shifter" hub I reckon to be a very scarce item? If your hub has this feature it is a solution for which inexpensive adapters are available.

    Using a jack shaft to "crossover" motor output & drive the existing rear pedal sprocket will work, but the final sprocket size would need to be substantially increased in tooth count. Though not a complex problem it's certainly not couple of hours bolt on undertaking either....some assembly and fitting required, lol. I'd think it worth tackling as,"A good shifter does change things" like K.C. Vale was fond of reminding us.

    Rick C.
     
  6. PsychDoc

    PsychDoc Member

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    Shifting is not an option out here on the left coast- smoke all the weed you want, but don't shift that motorized bike.

    Seems a heavy duty wheel, coaster break, hub adapter is the easy solution?
     
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  7. indian22

    indian22 Well-Known Member

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    Monarch, Sta-tru are mid-range pricewise for wheels ...Workman very heavy duty and higher priced. I've used all of these and they work well as a coaster brake and using the 1.5" three bolt sprocket adapter.

    All three are steel cruiser style wheels.
     
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  8. waynesdata

    waynesdata Active Member

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    How do you feel about sealed vs packed bearing wheels?
     
  9. waynesdata

    waynesdata Active Member

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    LOL you can smoke weed, but cant shift. Even if I could not shift I would still jack shaft to keep my rear disc and wide tires.
     
  10. indian22

    indian22 Well-Known Member

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    billet hub 3.jpg hybrid hub 1.jpg
    I prefer sealed but these are seldom seen in other than expensive wheel hubs, typically custom laced, for cruiser style hubs. or road bikes in competition lightweight skinny hubs for the road bicycles or downhill mountain bicycles.

    I just mounted custom built billet aluminum rear hub for disc rotor and dual sprockets (pedal & motor drive) for my hybrid gas and electric pedal bike and it features sealed bearings, but that's a $250. hub and wheel, but it's really sweet! That's a 38 tooth cog and 203 mm rotor shown in the photo

    Rick C.
     
    #10 indian22, Oct 23, 2019
    Last edited: Oct 23, 2019
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  11. waynesdata

    waynesdata Active Member

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    Looking at sturmey-archer 8 speed disc hub not sure what kind of bearings it has.
     
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  12. PsychDoc

    PsychDoc Member

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    Very nice, very! But way out of my current league. Maybe next bike. Right now I’m going to seek out a good coaster break and heavy rim/spokes.
     
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  13. indian22

    indian22 Well-Known Member

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    I like the Sturmey product line and have used various hubs, mainly brake units, they've offered through the years. I've only been inside one of the multi-speed hubs and that a three speed maybe 40 years ago and just observed a technician rebuilding that one. It was a loose bearing hub, but you'd need to research their product line for more up to date info on the use of sealed bearings in the newer units.

    Does the 8 speed have a straight surface of sufficient diameter that a hub adapter could use for secure holding?
     
  14. curtisfox

    curtisfox Well-Known Member

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  15. waynesdata

    waynesdata Active Member

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  16. kelly dean

    kelly dean Active Member

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    i cant get that link either
     
  17. kelly dean

    kelly dean Active Member

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    id look for a wheel disc capable i really dont like coaster brakes
     
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  18. waynesdata

    waynesdata Active Member

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    I am going jack shaft because rear disc is a design goal this build.
     
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  19. curtisfox

    curtisfox Well-Known Member

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  20. indian22

    indian22 Well-Known Member

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    Psychdoc's building on a budget and there's just so much he can justify at this point. Now if he changes his mind or hits the lotto, whatever, then our likes might become his reality, but until he tells us differently the coaster brake is what will work and is hopefully in his price range.

    Rick C.
     
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