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In article <[email hidden]>,
Russell Seaton said:bigsky <[email hidden]> wrote in message news:<[email hidden]>...
Quoted message said:I am interested in getting a compact crankset for my bike upgrade
project.
Exactly what are you upgrading? It seems your intent is to change the
gearing on your bike. Does a double 110mm bcd crank give you a
different gear range? It will most likely give you a different shift
pattern. Maybe, most likely, for the worse. My preferred gears,
42x15 to 42x19, do not work well with a double 110mm bcd crank. The
low end of this range falls at the upper end of the small
chainring/small cogs and the lower end of the big chainring/big cogs.
Or all on the very low end of the big chainring.
_ You could get those gears with a 36 small ring.
36x13 - 36x16.
You wouldn't get as fine steps though if you have a
15-16-17-18-19 somewhere in your cluster. Getting a compact
crank does not mean getting a 50/34.
Quoted message said:
Maybe a 110mm bcd double crank works for special event once a year
rides, but its shift pattern would not be acceptable for me on 99.9%
of my miles.
_ It works really well for me on 99.9% of my miles. There is a
gap, but with careful choice of cluster you can put the gap at
speed you don't use. If you live somewhere with long hills, it
allows a very rational set of gears. I think if you're happy with
a regular double it doesn't make much sense. It's really an
alternative to a road triple. It works best with at least 9 gears
in the back, but a 110mm double with 9 or 10 speed clusters can
easily cover the same range as many triple ring setups with a lot
less hassle and expense.
Quoted message said:
Seems to me lots of people are taken in by the newest fads. Whether
they be in bicycles, vehicles, clothes, music, diets, etc. Advertise
it and they will buy it.
_ It's not a new fad, in many ways it duplicates the setup that
you'd get with a Cyclotourist half-step triple and a 5 speed
freewheel. IMHO it's a return to rationality. The fad IMHO is a
53x12. Besides, you can always return to a 42/53 if you want.
Having a compact double allows you to easily and relatively
cheaply vary your gearing in a way that's just not possible
with standard road doubles. You can get any even size you
want from 34 to 56 in 110 bcd very easily and cheaply. Odd
sizes are available, but tend to cost more.
_ Booker C. Bense
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