Michael Vang said:I went ahead and did another century yesterday and tried this. I warmed
up for an hour or so in the small ring (it was around 30F with the
windchill) and then tried the big ring. It worked, and I survived.
My thoughts:
1) I was hesitant to shift back and forth because on my old Shimano
bike downshifting the front was pretty wild in that the spring just
chucks the chain at the small ring. On Campy, however, you can bleed
the chain over nice and easy with no theatrics.
2) Obviously, the gears were higher. I just ended up standing up a bit
more and I shifted a lot less. I think overall I ended up faster
because I was able to pedal downhill instead of coast. At my normal
16-19mph the chain line was pretty clean.
3) The rear sprocket gaps that seem so narrow on the small ring seem
bigger with the front ring.
4) I know this isn't scientific, but the big ring feels faster than the
equivalent gear using the small.
5) I was not able to use the 21 or 19 with the big ring which left me
with a 53x18 low. I was able to do all my hills okay with this but I
used some muscles I didn't know I had so I am a little sore today. I
doubt I could do our worst hill in this combo but I can always
downshift for that one.
So, I guess this whole thread was pretty pointless. I just needed to
try it and see. I think I can probably leave it in the big ring 95% of
the time which simplifies shifting.
That said, I can see a 48 or 50 large ring in my future, and/or maybe a
12-23.
Hi, get a chain guide like a N-Gear Jump Stop, then you won't have to
be concerned with that quick downshift, in front. I have an older bike
with a 39/52 and friction shifter. I was dropping the chain, put on a
Jump Stop, problem solved.
There are a number of different ones, the Deda Dog Fang, is one of
them. Here take a look at the Jump Stop:
http://www.gvtc.com/~ngear/
Life is Good!
Jeff