With my 46-30 crank and 12-28 cassette, I can use all 8 cogs in the
big ring and all but the 12&13 in the small ring. Best gearing setup
I've ever had!
I can do even fairly hilly rides in the big ring and there's just
enough overlap in the middle of the range that I don't shift the front
very much.
Ryan
On Mar 6, 2010, at 9:07, PATRICK MOORE <bertin...@gmail.com> wrote:
I used my wide range double as a single with a bailout; with 9 cogs
for the 44, 9/10 of what I needed required only rear shifts. And, I
set up the outer and the cogset for a pretty straight chainline in
the cruising gears. With nine or 10 cogs in back, one ring is plenty
for everything except loaded touring (I imagine) and steep off road
climbs; after all, a 46X32 with a typical 700c wheel gives a 39" low.
On Sat, Mar 6, 2010 at 8:09 AM, Bill M. <bmenn...@comcast.net> wrote:
The ugly crossover is why I ditched the 50/34 on my commuter, and went
back to a 46/36/24 triple. I have no use for the 24 on my flat
commute, but the shifting pattern is nicer. When I bought a brand-new
Campy group for my go-fast I went with 53/39 x 13-29 instead of 50/34
x 12-26 - similar gearing, but a nicer shift pattern. The club riders
with compacts always seem to be riding cross-chained.
IMO a workable wide-range double uses the small ring only as a bail-
out for the biggest climbs, and the big ring for everything else.
Something like 44/24 x 12-xx would work pretty well for me.
Bill
On Mar 6, 5:30 am, Steve Palincsar <palin...@his.com> wrote:
> On Sat, 2010-03-06 at 05:25 -0800, MichaelH wrote:
> > I don't think the biggest issue is how it will shift. After all
> > triple fronts are designed for a 22 tooth difference. Rather the
> > shifting pattern gets very awkward when you go from 14 to 16.
At 14
> > the next gear is typically two cogs away. At 16 your in no mans
land,
> > and at 18 and above the next gear is at the other end of the
> > cassette. I really like a 48/34 and could probably get along
with a
> > 44/30, but I think for rings below that I would prefer to have the
> > triple to widen the range without having to work so hard finding
the
> > next gear.
>
> Yes, the cross-over is the Achilles Heel of wide range doubles. For
> many recreational riders, the cross-over on common "compact doubles"
> spec'd for racers falls right in the middle of the cruising range.
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