A couple of notes after riding multiple times. C3. I'm 5'10" and 160 lbs. 170lbs riding weight. Riding a large.
- Bike handles phenomenal. Geo is spot on, although it does feel a touch long in reach. Maybe a 35mm or 40mm stem
- Rear end and shock is perfect. Love the feel of super deluxe. It has a nice fast rebound but it is controlled. Use exactly what the Ride Aligned said and added one additional click of rebound.
- The fork is blah. Not bad, but definitely not great. I have been playing with it since I got the bike. If you ride semi hard, hit descent sized jumps or ride steep terrain you will need to air the bike up another 5psi compared to what Ride Aligned says and use a click of compression. I have the same air pressure that Ride Aligned say I should have if I was a Pro. I'm not a Pro. I considered myself an advanced or expert rider. I added another click of rebound which gives me 5 clicks from fully slow/closed. Seems to be odd for my weight that the rebound needs this many clicks. The fork still feels to rebound a bit fast compared to my 36 Grip2 on my other bike.
- The chain was long by a link from the factory. Take a link out a readjust the B screw.
- Brakes are actually pretty good. I splurged and put on XTR rotors. The levers felt funky on initial ride but I got used to it. I originally thought I would eventually upgrade them but they feel fine. I'm going to keep them. Bleed was spot on from factory and the bite doesn't change on long descents.
- The shifting is not the best in the 14,12 and 10 gears. I think it is the hub or something is popping under a lot of power. This is my 3rd 12 speed Shimano setup and the other two bikes don't/didn't do this. Is it the hub?
- The tires are ok for the PNW. They are fast and work well on flow and jump trails but get a bit overwhelmed on steep wet terrain. I'm used to dual ply casing high grip tires with Cush Core in the rear. I have to admit though for jump style trail they are the bomb. You need run a bit higher pressure compared to dual ply. I'm running 23/25. 160 lbs. With my Assegai/E13 set up I run 20/21. They were super good on a dryer days at Tokul and 360/Swan creek.
- If I was to upgrade anything I would do the following in this order. Damper, XT Shifter, 35mm stem, Tires DHF 2.5 MaxxGrip DD F/R. New Wheelset with a DT Swiss 350 hub and Flow MK Rims.
- I ride in the Pacifc NW and rode the bike at Tokul, Tiger, 360 Bike Park and Swan Creek. I can't wait for a real good Duthie and 27 day. Tiger was wet when I rode and real slippery. This is where I wish I had a tire with more grip and thicker sidewall. Tokul is my home base and it absolutely is a perfect bike for that terrain. Steep twisty with some drops and jumps.
- The Orange is amazing but I still wish I could bought the C2 Shimano.
Erik
Great summary and my sentiment basically align with you on the C3.
Did you cut your bars down to the specified size, as this might make a big difference regarding your reach. Taking mine to 770mm (I'm 179cm tall) improved my comfort and fit a noticeable amount.
Upgrading the Damper to a 2.1 charger is at the top of my list.
The break lever upgrade (to XT) for me was essential as I'm a 1 finger breaker. The calipers have plenty of power for the way I ride.
The tyres are great in the dry (it's summer here) but will be replaced by something better in the wet come winter.
As for your issues with the drive train, it should be fairly bomb-proof, so if it was mine I would just pull it apart, inspect, relube, re-seat and re-adjust everything to make sure nothing was missed during the factory build. Or just drop it to your LBS and let them give it a once over.
I think the C3 really hits the sweet spot as for cost and upgrades. With a little bit of extra cash (or a lot of extra cash if you add carbon wheels) you can get this running just as you want.