A fine day's fettling in the garage yesterday, converting one bike to a 1x10 setup and servicing some bits and pieces in between. First I took the chainsets off both MTBS. The Soul was running double n bash with 36 24 Blackspire rings on an XT M770 triple chainset, 11-34 cassette with a GS (medium cage) XT clutch mech , and the Mojo was running XT M785 38/26 with an 11-36 cassette and long cage XT clutch mech. I removed the chainrings from the M770 and fitted a Superstar Components IO (narrow wide) 32T single chainring, in the middle position using spacers to pad out the chainring bolts. The Hope SS BB in the Mojo was sounding a bit rough, so I removed the BB cups, bearing shields and seals, and flushed out the old grease with GT85 and replaced with fresh marine grease.
Next I took the GS Shadow plus mech off the Soul and fitted a OneUpComponents RAD cage. This conversion allows crisp shifting on an expanded cassette eliminating B tension issues and jockey/cage clearance on a 42T cog. Next, I removed the XT 11-36 cassette from the freehub, and fitted a 42T OneUpComponents 42T expander, removing the 15 and 17T cogs and replacing them with a 16T to improve ratios. The cassette is therefore now 11-42 which coupled with the 32T chainring gives me much the same bottom gear as the previous setup. The advantage is that you simplify the setup, losing the weight of the shifter, front mech and cables. A net loss of 300g makes quite a difference to the overall weight of the bike. It now weighs a pretty decent 28 1/2 lb. (12.9kg) Tuning the gears was more straightforward than I thought it would be, and it now shifts beautifully.
So, front mech and shifter removed and nicely sorted.
Next I replaced the 26T granny on the 785 double chainset with a 24t and fitted it to the Soul. I used the long cage shadow plus mech off the Mojo as I had increased the overall capacity, refitted the chain and tuned the gears.