I have the Motobecane Fly Team 29 Ti with the 2011 XO build in size 15.5 as a 5' 7" 140 lbs rider. At the rate I'm upgrading it, it seems I'm upgrading everything except the frame, fork, XO (shifters, F/R der) and X9 (cassette/brakeset) level components.
My upgrade path:
Handlebars - 560mm is way too narrow. I came from 745mm, but settled with 660mm for weight.
Grips - Thin foam with a hex shape. Just not my taste.
Stem - 100mm +/-6d stem. I swapped to a shorter stem w/negative rise, and moved all my steerer tube headset spacers on top of it to get the handlebar lower. I could've probably stuck with the stock stem.
Saddle - Mine had an issue with one of the rails having play in the rear. If you bounced in the saddle at all, it'd make a hollow metal hitting plastic shell sound. Decently comfortably, I would've maybe liked it if it weren't so annoying.
Seatpost - 350mm setback. Not enough for a 29.5" inseam for efficient pedaling. Went with a 400mm carbon post, but noticed there are J&L 27.2 ti posts in 400mm on eBay for fairly cheap.
Tires/tubes - Kenda SB8. These just aren't a wise choice up front, and rear if you play in rocks, due to weak sidewalls, and the tubes are super thin and aren't even powdered. I went with Ikon EXO F/R and converted to tubeless. Kendas lasted 200miles before sidewall on the rear gave out. If I weren't currently in SoCal, I would've got a meatier tire up front.
Brake Rotor - 160mm 2011 G3 Cleansweep. Upgraded to 185mm up front to handle my speed/comfort level and since my rear was bent/warped (possibly from factory), I swapped my non warped front to the back.
Crankset - 27/42 gearing is relatively high for a 29er--rarely use the high gears except DH on smooth pavement and never spin them out, 3 bolt 86 BCD nearly impossible to find rings for in sizes other than 42t (forget about 1x10), poor front shifting performance (vastly inferior to XX). It develops a creak too sometimes in the left crankarm. Gonna repack the bearings following the guide on the drivetrain forum--apparently Mega EXO/V-Drive BBs have poor seals.
Wheelset - Flexy laterally and goes out of true very easily--going fast through rocks taco'd the front and going fast on rutty trails threw the rear out of true; bladed spokes can be a pain to true. Rear freewheel may have poor seals--I rode through puddles on a dusty trail. Can spin the wheel off the ground and hear the freewheel grinding on sand. Same with the front with the grinding sound, though not as bad. Going to take a look inside after I upgrade.
Hopefully, these last 2 are the last upgrades, besides maybe changing the chain a bit early. I feel that the upgrades were worth it. I'm beginning to appreciate my bike a bit more. I was kind of down, since it didn't ride as well as my Gary Fisher, but after upgrades (especially tires and tubeless and finding the tire pressure sweet spot) and especially after test riding some relatively higher end FS 26" bikes and doing some group rides, I think I'll be keep this bike for quite a while. It's extremely good at XC and pedaling and I originally was using it for light AM on Mt Beacon and fairly technical XC parts in Stewart, but now since I'm in SoCal which has very buff trails with only erosion ruts as obstacles really, I feel it's a perfect fit. I do rather well skill and speed wise with the locals.
New buyers should research upgrades before buying to see if buying a complete bike is worth it over buying the frame. The wheels are the most expensive upgrade with the crankset next. A set of quality tires is also moderately expensive at about $100 a set.
Other owners, how have you upgraded you Fly 29 Ti?
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