Kalahari Vegmot Posted July 4, 2017 Posted July 4, 2017 I want to convert someone's bike to 2x10 from a 3x10 setup using the existing 3x front mech and 3x front shifter. Ratio will be 24/36. Is this as simple as putting the 36 where the middle ring would be(like with a 1by), and using the first click of the 3x shifter with the 3x front mech, and just adjusting the limiting screws? Am I missing something?
Long Wheel Base Posted July 4, 2017 Posted July 4, 2017 Also look and see if there are spacers on the drive side crank moving the crank away from the frame. If yes, you could remove them to bring the crank closer to the frame to get your chainline right. EDIT: or add spacers
Kalahari Vegmot Posted July 4, 2017 Author Posted July 4, 2017 Groupset is:Acera octalink cranksetSlx shiftersAcera F/DXt R/D No spacers on anything
Long Wheel Base Posted July 4, 2017 Posted July 4, 2017 But it is possible. I have done it with XT. BUT the XT shifter I used was able to be used on 3x or 2x. It had a little screw under that you turn and it locks out one click.
Long Wheel Base Posted July 4, 2017 Posted July 4, 2017 Groupset is:Acera octalink cranksetSlx shiftersAcera F/DXt R/D No spacers on anythingYou might need spacers to bring the crank in-line with the cassette. In a normal 2x setup you should be able to use all 10 gears in either chainring. Whereas on a 3x running small small or big big isn't really practical and often not even possible.
Kalahari Vegmot Posted July 4, 2017 Author Posted July 4, 2017 To move the crank outwards or inwards? I won't be able to move the crank anywhere but maybe the chainrings?
seanrcb Posted July 4, 2017 Posted July 4, 2017 I just changed from 3x9 to 2x10 had to insert spacer between bb and crank (chainring hits on chainstay) needed spacer/washers on chainring bolt to to taken up slack of missing ring or use shorter single speed bolts
Captain Fastbastard Mayhem Posted July 4, 2017 Posted July 4, 2017 Bumpity bump. Where's myles?trying to extricate himself from threads such as this, as it takes up a kakload of time.... But seriously. It will work. 24-36 is the limit of the standard rings and pickup points in terms of the gap between small and large rings before additional shifting ramps have to be put into place to help with shifting the chain up to the big ring (as is the case with the AM 38t ring) Just ensure that the FDs limits are set up so that it won't shift into 3rd on the shifter, and you're golden.
Kalahari Vegmot Posted July 4, 2017 Author Posted July 4, 2017 trying to extricate himself from threads such as this, as it takes up a kakload of time.... But seriously. It will work. 24-36 is the limit of the standard rings and pickup points in terms of the gap between small and large rings before additional shifting ramps have to be put into place to help with shifting the chain up to the big ring (as is the case with the AM 38t ring) Just ensure that the FDs limits are set up so that it won't shift into 3rd on the shifter, and you're golden. Thank you!
Boerklong Posted July 4, 2017 Posted July 4, 2017 Ive done it with my 3x xt crank. Took the big blade off and modified the bushes/spacers and put it back. Had 32/22
T-Bob Posted July 4, 2017 Posted July 4, 2017 I've got a 2 x 10 slx shifter (I think) if you want to save the hassle. Free-99. Might be I-spec though.
Kalahari Vegmot Posted July 4, 2017 Author Posted July 4, 2017 I've got a 2 x 10 slx shifter (I think) if you want to save the hassle. Free-99. Might be I-spec though. Thanks man. If I don't come right I'll PM you
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