Lateral adjustments on a Rennen?- Mtbr.com
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  1. #1
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    Lateral adjustments on a Rennen?

    I installed a Rennen Rollenlager on my converted SS and for different reasons (BB width, chainring size, frame clearance...), the Rollenlager's roller is too far toward the wheel so it screws my chainline. Can I adjust the roller position to keep the chain straight? I would need to move it outward by a few mm.

    As it is now, the chainring and cog are perfectly aligned but not the roller so every now and then, the chain seems to slip under burst of pedal torque (sudden acceleration, first pedal stroke when I stand up to climb)....
    Last edited by Dan Gerous; 06-14-2006 at 12:34 PM.

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  2. #2
    And He was Not
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    Yes you can. I had to use a longer bolt and a washer from some old v brakes to get my roller in line with the chain. This is very common with the Rennen.
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  3. #3
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    Thanks, I'll mess around with it. Seems like there is some kind of spacer between the arm and the roller, perhaps I could just put that spacer on the other side of the roller...


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  4. #4
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    I had to go the other way. I needed the roller closer to the wheel.
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  5. #5
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    another option

    would be to adjust your chainring position (inside of arm or outside of arm) and cog position. Basically adjust your chainline which is relatively easy if you are using small spacers (not Gusset)...

  6. #6
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    Quote Originally Posted by flipnidaho
    would be to adjust your chainring position (inside of arm or outside of arm) and cog position. Basically adjust your chainline which is relatively easy if you are using small spacers (not Gusset)...
    That went through my head but the chainring (I'm using a 44T) gets dangerously close to the chainstay if I put it inside the crankset...

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  7. #7
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    Holy Smokes!

    Quote Originally Posted by Dan Gerous
    That went through my head but the chainring (I'm using a 44T) gets dangerously close to the chainstay if I put it inside the crankset...
    Dang! that's a big a$$ chainring! Is it a commuter or roadie SS? Anyway, since it's a SS, you can run the bb spacers on the drive side to move your chainline further out. However, swapping the spacers out of the axle of the Rennen guide sounds like a simpler solution (I have not done this myself personally)...

  8. #8
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    Yeah, it's a commuter:




    I'll see if I can move the roller outward, my el cheapo square taper BB doesn't offer much in terms of chainline adjustability...

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  9. #9
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    SWEET commuter...
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