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  1. #1
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    Switchblade crankset considerations

    So, I bought the XT/XTR 1x model. It comes with an RF Aeffect cinch-style crankset and a 30-tooth cinch ring. Despite reports to the contrary, the ring did not come flipped from the factory. My chainline seems OK from a functional standpoint.

    I also own a RF Next crankset on a different bike. I'd love to be able to swap the two. So, I did a little disassembly today.

    IMG_1236 by dbozman1173, on Flickr

    IMG_1237 by dbozman1173, on Flickr

    As you can see, the Aeffect cranks don't have a "normal" RF 30mm spindle and the frame comes with a Shimano PF BB. The Aeffects also have a small NDS spacer (5mm) on the spindle and a mated DS spacer (10mm total width).

    The Next cranks have a 30mm spindle marked 68/73. Not sure where to measure from, but wouldn't these carbon cranks just swap right in with a swapped 30mm PF BB?

    And to follow up, would these Aeffects swap onto a standard threaded BB frame with just a Shimano BB swap?
    Just like a raindrop, I was born to fall.

  2. #2
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    No you need a wider spindal from raceface and spacers for the 30mm spindle. I just swapped the affects to the next sl's on mine

  3. #3
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    So the 2015 Next SL Cranks won't fit? I put in mine without the BB just to have a look about crankarm clearance and it looked fine to me.

  4. #4
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    Yep, visually it looks fine, though I can't tell about the Q factor or ring clearance by just eyeballing it.

    Involver: What BB did you use? And do you have a part number for the spindle you swapped?
    Just like a raindrop, I was born to fall.

  5. #5
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    I used a raceface bb92 for the 30mm spindle. I'll get the part number for you tomorrow. I'll give the shop a call and get it for you. it is a different spindle though due to the q factor

  6. #6
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    You got a different spindle for the old Next SL Cinch crank or the new Next SL G4?

  7. #7
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    I have the G4 on mine but I believe you need it for the old next sl as well

  8. #8
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    you need the spindle 30mm plus 143.5mm and i believe a 1.5mm and 11.5mm spacer in 30mm.

  9. #9
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    Thanks for checking.
    Just like a raindrop, I was born to fall.

  10. #10
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    Quote Originally Posted by Blatant View Post
    Thanks for checking.
    no problem man

  11. #11
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    The Aeffect crank we use has the longer spindle. So no need to flip the ring.


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