Originally Posted by
pumpkinhed
Hi All,
I have an older Scott Metrix 40 that I'd like to do a conversion, 3x8 speed to a 1x10 speed. I'm using the bike on roads and paved trails 95% of the time, and the reason I want to do a conversion is I'm unhappy with the stock components as the shifting is pretty crummy/unstable. I thought I'd simplify by going to a 1x, and I'm looking to upgrade to better components for improved shifting and stability. I realize this means new cranks,derailures, levers etc.
Can anyone point me in the direction of compatible components/groupsets for doing this? I'm happy with my rear wheels (Shimano FH-RM 30 hub) and the bottom bracket is Shimano BB-UN 26.
I don't care about weight, I care mostly about solid dependable shifting. If anyone has done a similar conversion or can make a suggestion it would be greatly appreciated. Additional bike specs at bikeroar metrix-40-solution-2014/specs
Thanks in advance for any help or suggestions!
I recently completed a 1X conversion, from 3x8 to 1x8, detailed here:
Converting Trek FX2 to 1x - Bike Forums
Most relevant portion starting at post #17. Four suggestions:
(1) You can break this project down into two steps: (a) Going to 1x8; (b) Going to 1x10. That way, if step (a) fails, at least you should be able to revert without having already bought everything you need for step (b).
(2) A new crankset is only necessary for your 1X conversion if the chain rings are riveted onto (and thus not removable from) the right crank arm, which seems to be the case (
Scott Metrix 40 Bike - 2014 | REI Co-op). I used the Dimension Cyclocross crank arm set linked in my post. You can use the same (but with a 10 speed chain ring).
(3) Not strictly necessary to change the bottom bracket if you don't mind using the middle ring position of the Dimension Cyclocross crank arms, which is not as clean looking as using the outer large ring position. (But, if it were up to me, I would take the opportunity to upgrade from a Shimano BB-UN26.)
(4) For step (b), you will need a new cassette, chain, rear derailleur, and shifter (all 10 speed). Shimano 10 speed components are cross compatible, so these four components do not even need to be from the same groupset. Just make sure the rear derailleur can handle the max rear cog. Other than that, it largely depends on how much you are willing to spend on this bike.