SickBikeParts Right Hand Side Chain Tensioner idler wheel options

Discussion in 'Transmission / Drivetrain' started by Fabian, Mar 11, 2014.

  1. Fabian

    Fabian Well-Known Member

    It seems everything has already been invented, because after i made a simple modification to the right hand side chain tensioner, i come across flanged (ball bearing) idler wheel options for the SBP R.H.S chain tensioner.

    I wouldn't have bothered solving the problem myself if knowing about Teracycle flanged idler wheels which also have an added design benefit by being fitted with a captive chain bar to prevent the chain from moving past the extremities of the sprocket flanges.

    The right hand side chain tensioner will now be modified to take a much better looking (professionally presented) Teracycle idler wheel.

    KettenleitrolleUmlenkrollefuerLiegeradDreiradidlerpulleyforrecumbentbicycletrikeTerraCyc_007.jpg

    be9aca_feae07089cdfd93d84631dde146146a3.jpg

    la_08ter_catrike_idler.jpg

    tcidlers-4.jpg

    IDL137_LRG.jpg

    glyde_52lg.jpg







    My attempt is a poor imitation of a properly designed product.



     
    Last edited by a moderator: Dec 15, 2015
    FurryOnTheInside likes this.

  2. FurryOnTheInside

    FurryOnTheInside Active Member

    These are just the job! Definitely much less risk of trouser chewing or chain coming off the tensioner than the standard equipment. :D Nice find Fabian!

    I like the way they've used them on the final drive chain too, with the ability to slide side-to-side to accomodate gear changes.
     
  3. FurryOnTheInside

    FurryOnTheInside Active Member

    Where did you find these, Fabian? Goggling it I'm coming up with nothing but some recycling company and recumbent forums mentioning this from 2004, but with broken web links. :(

    EDIT: Never mind, found it! http://t-cycle.com/idlers-chain-management-c-41/idlers-c-41_9/ $67 each wheel for the small idler wheels (no mounting hardware) though, ouch!
     
    Last edited: Mar 11, 2014
  4. Fabian

    Fabian Well-Known Member

  5. Fabian

    Fabian Well-Known Member

  6. Fabian

    Fabian Well-Known Member

  7. FurryOnTheInside

    FurryOnTheInside Active Member

    Posting simultaneously again haha. I found it eventually but thanks. :)


    Yeah I'm not sure the flanges are even neccesary with the use of the chain keeper (bar passing over the top of the idler) in your second link, we're talking about using on the final drive chain below the chainstay, aren't we? I am not swayed from my idea of using old derailleurs, lol. Only maybe I could use flanges like the excellent ones you made for your RHS tensioner if they do turn out to be neccesary. :)
     
  8. FurryOnTheInside

    FurryOnTheInside Active Member



    Nice cheap solution there! :D Delrin disk, lathed then drilled.. very, very simple and they're claiming 1500 miles with no signs of wear problems. :)
     
  9. Fabian

    Fabian Well-Known Member

    Imagine how good the right hand side chain tensioner would """look""" if these "mag wheel" idlers were attached to the tensioner, but in anodised red or blue !!!

    One hot ticket item.


    CHM151_LRG.jpg
     
  10. FurryOnTheInside

    FurryOnTheInside Active Member

    STOP IT I'M GETTING DROOL EVERYWHERE! :tt1:
     
  11. Fabian

    Fabian Well-Known Member

    I will take flanges over a chain keeper any day of the week, but i'll take both design concepts if i have the chance to install them together as a complete engineered package.


    No, i am referencing all of this material in relation to the SickBikeParts Right Hand Side Chain Tensioner idler wheels.
     
  12. Fabian

    Fabian Well-Known Member

    So am i, and i'm about to write Jim an emotively laden 3,000 word essay on why SickBikeParts needs not just to have a functional product range, but an aesthetically pleasing product range, and i am just one person of many prepared to pay a premium price to get my hands on not just a properly engineered product, but delightfully good looking and highly desirable engineering master pieces.
     
  13. FurryOnTheInside

    FurryOnTheInside Active Member

    That surprises me, I can't envisage a need for the chain keeper with the RHS tensioner, you're the one writing from experience though. Definitely on a final drive chain management system, I can see the need for the chain keeper there.


    And I'm still gawping like an idiot at that last picture! Where's that from?
     
  14. FurryOnTheInside

    FurryOnTheInside Active Member


    I have an opinion from reading MB sites that the majority of MBers would pay more for looks than for function anyway, and I am sure the guys at SBP know this already. They'll get there, just give them time. The hobby is still growing. :)
     
  15. Fabian

    Fabian Well-Known Member

    I don't have time.
    I want my bike to be an aesthetically pleasing artistic mechanical masterpiece, and i want it """NOW"""
     
  16. Fabian

    Fabian Well-Known Member

    I thought the exact same thing, but when the going got brutally tough, and when the system was pushed to breaking point, it revealed a small problem that required a small quick fix.
    I would have much preferred to be able to order the Right Hand Side Chain Tensioner with optional (though expensive) Terracycle flanged idler wheels that had been given the SickBikeParts special treatment by being finished in anodised red or blue colour options.
     
  17. Fabian

    Fabian Well-Known Member

    I can't remember. I found it somewhere floating about on the net.
     
  18. Fabian

    Fabian Well-Known Member

    Although i want my bike to be an example of engineering perfection, i also want it to """look like""" an example of engineering perfection.

    Many facets of life are moving examples of art, and i like art to be captivating as well as pleasing on the eye; my motorized bicycle included in that concept.
     
    Last edited: Mar 11, 2014
  19. FurryOnTheInside

    FurryOnTheInside Active Member

    But a chain keeper isn't possible with the current straight arms on the RHS tensioner. They need to be somewhat L shaped. I hope they read this and make L shaped tensioner arms that a chain keeper can be fitted to.. actually the closer I look the more I can see it would have to be a clunky add on, for now at least. Certainly SBP can't redesign the RHS chain tensioner arms NOW, they only just got them made!

    Oh yeah and anodized everything would be great too. I could get the anodizing done for next to nothing but for their other customers I'm sure it'd make a big difference, trouble then is how many of each colour.. they can't quadruple their unsold finished stock just to add colour choices; small businesses need to avoid the cashflow problems caused by too much stock.

    Off topic now, but do you think the LHS tensioner cover plate is big enough to accomodate the 21T sprocket? Will the idler wheel go low enough? Will there be any leg protection from the cover plate?
    I suppose you want those anodized in black red and blue and chrome plated, too! ;) (so do I but it's not going to happen this year lol)
     
  20. Fabian

    Fabian Well-Known Member

    A quick and dirty modification would be something like the concept pictured below, where the material is bent 90 degrees, allowing the disk flange tabs to meet each other over the 11 tooth sprocket, thereby acting both as a flange and a chain keeper:

    [​IMG]
     
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