Suggestions on gearing changes for the cross bike?
Currently uses a cross crankset and a road cassette.
F: 46-36
R: 11-28
The issue is a low gear of 36x28 at a gearing of 1.29 is rather beastly, especially for such a beastly bike to begin with
My
legs need some gearing assistance here, especially for singletrack duty. I'm not expecting the 0.70 low gear ratio of the Trek, but I find I could use maybe "2 more gears" on the back.
So. Find a crankset that has 48-32T chainrings? And fit an 11-32 cassette which is the max the 105 derailleur can handle? That would give a 1.00 ratio.
Or should I go a bit more bonkers, get WolfTooth Road Link to expand to 36T on the rear? The current 105 long cage can wrap 37 links, which would limit me to the current 46-36 crankset, possibly with a 34T inner ring. If it's 36x36 it's 1.00, if it's 34x36 it's 0.94. 6% is unlikely to really make much difference than the 1.00. I also don't know if you can mix and match road chainrings like that, I think it starts to dick up the shifting. So this is the cheaper option to get to 1.00 ratio but it's still basically just 1.00. FYI this is equal to the 3rd gear from the top of my SLX cassette.
In that above scenario, Ultegra 8000 can wrap 39 links, which would allow a 32T inner ring paired to the 36T cassette cog, for 0.89 gearing which would be pretty nice. Just requires another $80 on a derailleur. This would be similar to 2nd gear from the top of my MTB. I don't know if 32T is even possible on a 110 BCD road crankset.
Fucking Shimano with all the pull ratios being different. 10 speed Sram was all mix and match ready. You could throw a MTB derailleur on a road bike and it was totally NFG worked with the brifters and all.
I think most of my 1x cross friends have 1.00 low gear ratios with their Sram setups. Going with a frankenstein 1x setup with 10-42 XD cassette would require new drivetrain plus wheels. NGH. Well the wheels will eventually but I don't want to change absolutely everything on the drivetrain just now.