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You’ll need to look into the capacity of the front mech to know how much larger than the little ring you can go.
As for the chain, stick the bike in the big cog at both ends and see what position the rear mech cage is in. You might need to add a link or two but might get away with it if it’s only a couple of teeth and the chain isn’t too short at the moment.
M_V
@MrMister
I tried posting in the current projects thread (https://www.lfgss.com/conversations/347572) but figured this is quite a specific issue. Does anyone know which (larger) chainring I can use to increase the tooth count of a 44t Shimano Deore LX? I'm confused, to say the least. I'm guessing a Shimano FC-M530 (48t, 9 speed, 104BCD) but then there is FC-M590, FC-M510, FC-M660, and that's not including other manufacturers like Blackspire, Truvativ or the Specialites TA versions. I found a 48t Chinook with the right BCD but don't know if I will need to make any changes to the chain, or derailleur, cassette or bottom bracket? I read that it may only be possible if I change all three chainrings to keep the differences equal (22/32/44 to 26/36/48) but that sounds prohibitively expensive. I feel I may be opening a can of worms here...
Anyone able to assist/put me out of my misery?