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Thread: my Shimano 1 x 11 with a clutch conversion

  1. #21
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Works just fine on a Deore Shadow + and 105 5800 shifters.
    Thom Kneeland

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Unoveloce, that's brilliant. Any chance of a picture?
     

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    I'll take a pic when I get back to the shop. Right now there's no cable on it as the bike is an incomplete build. I just threw a cable and full length housing at it and a borrowed wheel from my CX bike to see if it would work and it does. Very nicely in fact.
     

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    I have an XT rear derailleur in the part box. Might give it a try too.
    --
    T h o m a s

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    This is both awesome and terrifying - FWIW i see a shifter cable pull mentioned earlier, whatever you measured, it is a progressive (non-linear) pull, so that number may have helped you get this to work, which is freakin' sweet - but I'd argue that it's an average...
    I work in a bike shop, and I'm pretty good at it..

    Sub 6kg or I don't want to ride it.

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    I disagree, it is definitely linear. I measured 2.7mm per index, and this was confirmed by it being precisely 24.3mm for 9 gears (the 10th shift, as in dropping into your 11th sprocket, does actually release more cable, approx 3mm, but this is the shifter just dumping all available cable. The limit screws will stop mech from over traveling) The mechanism inside the shifter is teeth on a ratchet wheel, and this wheel is a constant diameter, and the pitch of the teeth appears to be equal, all this points to linear cable pull. Also on the rear mech the radius from cable entry to pivot is almost identical to the cable clamp to pivot. This will give an (almost) perfectly linear cable pull. I say almost as the cable will always form a triangle with the pivot and clamps, not an arc, but these differences are down to 0.001's of a mm certainly close enough to be counted as effectively linear.
     

  7. #27
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    #vSalonRules

    Now someone show me how to get a clutch onto a Di2 Ultegra derailleur.
    Dustin Gaddis
    www.MiddleGaEpic.com
    Why do people feel the need to list all of their bikes in their signature?

  8. #28
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    See if I got this right before I start drilling into my rear derailleur(s):

    center to center measurement should be 20mm from the pivot to the center of the new cable hole. Right?

    M
     

  9. #29
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    yes, 20mm centre to centre
     

  10. #30
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Quote Originally Posted by dgaddis View Post
    #vSalonRules

    Now someone show me how to get a clutch onto a Di2 Ultegra derailleur.
    Like this:

  11. #31
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Quote Originally Posted by Cord View Post
    I disagree, it is definitely linear....
    I won't belabor the point, since you have some good real-world experience determining what you believe, but I am stating verbatim what I have been told from a top Shimano US tech... It is not linear.
    I work in a bike shop, and I'm pretty good at it..

    Sub 6kg or I don't want to ride it.

  12. #32
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    I should receive some ST-RS685 shifters tomorrow and I have a spare XT derailleur collecting dust. Will let you know how someone with two left hands fare.
    --
    T h o m a s

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Quote Originally Posted by bikemastermartin View Post
    I won't belabor the point, since you have some good real-world experience determining what you believe, but I am stating verbatim what I have been told from a top Shimano US tech... It is not linear.
    Is the der. Parellogram sweep non linear and the cable pull linear? Perhaps some clarity on why you guys are disagreeing helps?

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Even if we were talking cable pull, the pull difference might be simply too small to be measurable reliably by hand and it may just not matter that much. And shimano has refined the shifting performance so much in the last 2 decades that it may just mean the difference between wonderfully great shifting and supercalifragilisticexpialidociouswonderfully great shifting.

    I.E. less than the difference of shifting performance between a brand new and slightly stretched cable or chain.
    --
    T h o m a s

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    I built a little tool which uses a dial gauge to very accurately measure cable pull...I measured a few different shifters from different brands in the hopes there would be some hidden combo of functionality.

    Years back I wrote the DrivetrainCalculator.com website but it fell out of upkeep and I was hoping to modernize it.

    All the Shimano 9, 10 and 11 speed shifters I measured are completely linear in their cable pull. 11 speed road is 2.5mm of cable per click, right the way across the range.
    DA9000 11sp cable pull per shift by Tristan Thomas, on Flickr

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    how about the front (left) shifter pull?
    Matt Moore

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    I measured the cable pull with a little fixture that fitted onto the end of a set of digital calipers, I could use it to measure each individual shift, and the combined pull of several shifts. I never went to any lengths to record my data, at the time this little experiment was for my own use. I shall revisit the shifter this weekend and record my results properly. However, to the best of my measuring abilites i could not detect anything other than a linear pull. I'm more intrigued that Tristan arrived at 2.5mm per shift, that doesn't match my findings???

    Tristan i don't quite understand your graph, the vertical axis is cable pull in mm? The horizontal is gears but going up in steps of 1.2??? I'm somewhat confused?
     

  18. #38
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    That's the gear number on the X axis - I don't usually use the graphs so I hadn't formatted that axis but I can see why it doesn't make any sense. Here it is formatted.

    For DA9000 I got 2.5mm per shift. For XTR 9000 I got 3.5mm per shift.

    DA9000 11sp cable pull per shift by Tristan Thomas, on Flickr

    Here is my tool: A 30mm DTI with a return spring which can clamp to a cable. Pretty simple and it's very repeatable.

    Cable pull measurement tool by Tristan Thomas, on Flickr

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    Default Re: my Shimano 1 x 11 with a clutch conversion

    What a timely product release.. looks promising and equally breakable Tanpan — Lindarets
     

  20. #40
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    Default Re: my Shimano 1 x 11 with a clutch conversion

    Ding ding ding. This is a good thing yes?
    Quote Originally Posted by dually View Post
    What a timely product release.. looks promising and equally breakable Tanpan — Lindarets

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