It’s a bit unusual in that the drivetrain is a combination of Campagnolo and SRAM components. Since I was born a long time ago, and the terrain I ride sometimes includes 20% gradients I wanted a lowest gear ratio comparable to my 2001 Trek 5900 triple which has a 32 largest cog on the cassette, resulting in a .9375 : 1 gear ratio.
I also wanted to bike to be as authentic Italian as possible, so I tried to use a Super Record 11 drivetrain to the degree possible. Of course since Campy doesn’t make MTB drivetrains or road triples any longer, I had to incorporate either a Shimano or SRAM cassette. I calculated that a 36T cog combined with a Campy 34T small chainring would result in a .9444 :1 gear ratio. I was unable to find any Shimano 11 speed cassettes with a 36T largest cog, although there were some with even larger cogs. The only 11 speed cassette with a 36T largest cog was the SRAM PG-1170.
I learned through an excellent article at the link below, that a SRAM (Exact Actuation) 10 Speed Mountain derailleur paired with a SRAM 11 speed Road shifter would work with the SRAM PG-1170 cassette.
http://blog.artscyclery.com/science-beh ... atibility/
Here's a pic of the mixed OEM shifters:
The component list:
*Campy Super Record 11 Ultra Torque Compact crankset, 50/34
*Campy Super Record 11 Front Derailleur
*Campy Super Record 11 Ultrashift Ergopower left shifter (I had to by a pair and use only the left!)
*SRAM Red 11 speed right shifter (these are luckily sold as either right only, left only or a pair)
*SRAM 11 speed PG- 1170 11-36 "Road" cassette
*SRAM 10 speed MTB long cage ”Exact Actuation" rear derailleur
*Shimano Ultegra 11 speed chain
Campy Super Record 11 Dual Pivot Skeleton Brakes
*Zipp Service Course SL-80 Alloy Handlebars (I was unable to find 46 MM C-C bars to my liking from an Italian manufacturer).
*Ritchey WCS 130mm +17 degree Alloy stem (the ONLY white, 130 MM + 17 degree stem I found in 3 weeks of searching!)
Deda Carbon spacers
Deda Handlebar tape
*Shimano Dura Ace 7900 carbon pedals
*Sella Italia SL XC Flow Saddle - Colnago branded
*Wishbone TF82525C Threaded Bottom Bracket Cups for Campy Ultra Torque
*3T Orbis II C50 Carbon Clincher wheels
The unusual rear derailleur cable entry point, without the traditional "loop":
Wishbone TF82525C Threaded Bottom Bracket Cups for C60 and VR-1:
- Wishbone TF82525C Threaded.jpeg (4.03 KiB) Viewed 5117 times
Bottom Bracket installed, non-drive side:
With the adapters in place, the next step would have been to install the Ultra Torque crank arms.
threads directly into the permanent steel sleeve after the Colnago replaceable alloy sleeves are removed. Each Ultra Torque cranks arm comes with a ceramic bearing pressed onto the spindle. When installing the crank arms, the bearings fit snugly into the cups of the Wishbone bottom bracket, but they are not "pressed in"; they go in with gentle pressure once they are correctly aligned.
