Hello, my name is Jason. i am new mtb, my 6y.o son races bmx and am pretty well versed in that world, i do all his work and maintenance on his mini, I am pretty mechanically adept, i have been reading posts and websites on mtb for about 3 weeks now, so i am an epert in everything mtb! (thats a joke) i do need some advice/guidance on a serious note though....i purchased 2 bikes from a gentleman for what i found to be a great deal, i got my wife a 2007 Specialized FSR XC PRO (appearantly it was AJ's rentals, i did not know this, but in was in near mint condition) and a 2003 Epic with good upgrades. I got a host of misc. Stuff with the bikes as well. They happen to be a medium and large respectively, perfect sizes for thw both of us (wife and I) so onto the guts of the topic.....
The bike: 2003 Epic disc with brain. Stock CASSETTE:Shimano HG-50 LX, 11/34
CRANKSET:Specialized Strongarm 7050, XT Spline
CHAINRINGS:44Ax32Sx22S, 7050 alloy 4mm thick outer ring, 4 bolt 104/64mm pattern, Steel chainring bolts
BOTTOM BRACKET:Shimano ES-30 Octalink spline, 68mm shell width, 113mm spindle length
Upgrades by previous owner: chris king head set, Dt swiss hubs, easton seat post, easton cf handlebars, tires,
Issues....I am getting chain suck in the granny gear up front, its not that I use that gear but the chain jumps from the middle chainring and then 'suck'
Question: what is the best course of action? Single gear, replace all 3 chainrings(i was told when replacing 1, all 3 should be done)
Statement/question i would like to change the whole driveline ie bb,crankset,chainrings,cassette chain etc. I have read and reviewed nice things about the shimano xt and the m770. I cannot find where it will tell me or not if the xt crankset comes with a bb. Is this a seperate item? And if so what bb do you recomend?
I know this post is long, if I still have your attention, help would be greatly, greatly appreciated.