I'm getting closer to figuring out what to do with my touring bike (13 year old Bruce Gordon Rock 'n
Road currently w/ Suntour XC Comp; 130mm rear spacing; 68mm bottom bracket). My plan is to strip it
down this winter, and send it out to be repainted and then rebuild it with a new drivetrain. So now
some questions...
For a number of reasons, I want to go with Campagnolo Ergo brifters on drop bars and that drives a
lot of the other decisions. Some have suggested that I rebuild it w/ Shimano for more widespread
service capability in almost any city, but I just like the Campy Ergo better. I've read all the
discussions on combining Campy Ergo and Shimano, but feel that if starting from a clean slate it's
probably better to keep Ergo brifters/rear deraileur/rear cassette/rear hub all Campy compatible.
From a pratical standpoint, it also probably makes sense to do this as a 10 speed setup given the
longer spare parts availability lifespan of going with what is current. I was figuring on a front
crankset which gives 26-36-48 and consider two rear cassettes possibilities: 12-25 (~27.6 to 106.3
gear inches) or 13-29 (~23.8 to 98.1 gear inches). The current gearing goes from ~24.8 to 98.1 gear
inches. Does this sound like a solid plan?
I'd also rather be riding than tending after the bike so I much prefer components with sealed
bearings to keep maintanence to a minimum. From my research it appears that none of the Campy rear
hubs have sealed bearings. However, the White Industries LTA Campy cassette hub does have them. Any
comments on the LTA hub? Are there any other Campy hubs out there worth considering (I'm not
interested in fancy factory built wheelsets with proprietary or difficult to find spokes). The rear
deraileur would be a Campy long cage (although the medium cage would work if I only use the 12-25
or 13-26).
I'm assuming I can go with a more flexible array of gearing on the front with the Ergo (vs. STI) -
is this correct? I'm looking at an ISIS based
110/74 bcd mountain bike crankset with 26-36-48 9-speed rings. A LBS is strongly suggesting I go
ISIS and not square taper if possible. The Raceface Turbine LP is one ISIS crankset available
in 170mm length which can be configured like this. Any comments on this crankset or others
which might fit the bill? Will the Raceface 9-speed chainrings likely be compatible with a
Campy 10 speed rear? How do you determine which size bottom bracket is needed?The Raceface
website says as a general guide, "For narrow XC triple or double road - use a 108mm. For all
around triple ring setup - use a 113". Other than trial and error, is there a way to be sure
what size is right?
I've been wondering what to do for the front deraileur. I'm guessing the Campy triple fronts are
more optimized for larger chainrings (i.e. 30-40-50 or 30-42-53). Shimano seems like they have
several front deraileurs whose specifications say will handle a 46 or 48 big ring (FD-M761 (XT), or
FD-M953 (XTR)). Both are available in bottom pull. Would these be my best bet for the front?
Many thanks for all comments/review of this setup for touring.