Srams widEST 10-42 range superlight external 11spd cassette/gearing now allows a justified use of just 1 chainring thus no front shifting/shiftr/derailleur/2nd chainrng/clearances/xtra weight/cabling etc needed at all! It wld b by nature and simplicity, Lighter, Easier, Smoother, and potentially a stiffer frame due to more room for frame material in tht area.
LET THE TESTING BEGIN AND VIDEOS BEGIN!.... STAY TUNED TO BIKEFX FOR UPDATES.
My Shimano rep didnt evennknow if we cld use non 9000 rd with 9000 shifters :P. Shame! I bet you can. We must in order to work w 42t cog we need an mtb rd with 42t compatibility. So far, Sram's XX1 is the only one, officially. Unofficially? Any rd with a max. cog tooth of close to 42 will work...just not as smoothly as the XX1's - RD's pulley wheel with less than 42t max may touch the 42t cassette cog in that 42t gear only. That'd be the biggest issue. Next would be tht its shifting path may not match the 9-42 cassette shape but, that is likely a non-issue.
Crap ths is gonna b expen$ive...900$ shiftrs...who knws how much xx1 cass gona cost... Gotta borrow... ;)
STAY TUNED TO BIKEFX FOR THE LATEST TECHNICAL/MECHANICAL STUFF.
NB An 11+ speed internally geared hub is also worth noting here for non-racers aka, 'US" the people, the rest of the millions of people on earth that bike daily for fun up to multiple times a day all year round for transportation etc. ;)
WHY? Forgetting the additional 100's of grams of weight in the rear and limits against super light wheel choices because only many metal spokes can be built with these IGH hubs....ugh....you DO get a smoother and thus longer lasting chain, super smooth and ultra wide gearing all with little to no maintenance compared to regular/monthly maintenance with external gears.
***My greatest apologies. My connection did not come through with providing the XX1 parts for testing, therefore, cant test! Don't we hate it when people don't keep their word folks?