Re: [CR]Crank length, today and yesterday

(Example: Production Builders:Cinelli)

Date: Fri, 21 Sep 2001 07:40:23 -0700 (PDT)
From: "Tom Dalton" <tom_s_dalton@yahoo.com>
Subject: Re: [CR]Crank length, today and yesterday
To: CYCLETRUCK@aol.com
Cc: classicrendezvous@bikelist.org
In-Reply-To: <a5.1bcc370d.28dc2f8a@aol.com>


The leg length difference is best compensated for by moving the center of the pedaling circle upward on the short-leg side. This can be accomplished by shimming your clipless cleats or by using a custom (tall) pedal cage for clip and strap setups. The different crank lengths generate two different size pedalling circles (by a full cm., in your case) and this just isn't right. Your poor legs will be very confused, in a mechanical sense.


--- CYCLETRUCK@aol.com wrote:


>
> Well, I'm long in the leg (34" to 35"inseam) 6' 3/4"
> short torsoed and I ride
> mostly 170's.
>
> I picked up a color-mismatched Icon crankset for my
> Trek 850 Antelope MtB.
> For the dirt cheap price I figureed I could live
> with the color difference
> (two different shades of teal).
>
> But I discovered that the one crank was a 175 & the
> other was a 170.
> RATS!
>
> Then a remembered a factor I'd never considerd an
> issue---one leg is about
> .5" longer than the other.
>
> Which leads me to wonder if dif length cranks can
> compensate for differing
> leg lengths?
>
> Don't ask me if it'll work.....The 175 crank was on
> the side of my longer leg.
>
> Calvert"Leveraged to the Max" Guthrie
> Kansas City
>
>
> In a message dated 9/20/2001 9:51:24 PM Central
> Daylight Time, Wdgadd@aol.com
> writes:
>
>
> > Subj: Re: [CR]Crank length, today and yesterday
> > Date: 9/20/2001 9:51:24 PM Central Daylight Time
> > From: Wdgadd@aol.com
> > Sender: classicrendezvous-admin@bikelist.org
> > To: Huemax@aol.com, CaptBike@sheldonbrown.com,
> LouDeeter@aol.com,
> > classicrendezvous@bikelist.org
> >
> >
> >
> >
> > I'm reminded of a man I met in about 1975 at a
> shop called the Broken
> > Spoke in Dover Point, NH, named James Farnsworth.
> He advocated what he
> > called
> > "full throw cycling" which essentially meant using
> extremely long cranks,
> > huge rings, and a lowish cadence. He had a custom
> chrome Schwinn Paramount
> > with a very high bracket to suit the long cranks,
> which were T.A. 180's
> > with
> > machined bolt on block extensions giving perhaps 4
> or 5 cm. more length.
> > The
> > largest of the triple T.A. rings was at least a 65
> or 70. The bike had some
> > rather weird and rather crude modified components,
> like the SunTour GT rear
> > changer that had it's cage lengthened by cutting
> and brazing in a Mafac
> > wrench! He let me try the bike (with my wheels)
> and any impressions I had
> > are
> > lost in time, even if they had not been hopelessly
> colored by teenage
> > enthusiasm. I wonder how he talked Schwinn into
> building this for him? Does
> > anyone else remember this guy? By the way, I use
> 170's and one set of
> > 172.5's
> > on 60 cm c to c frames. I'm thinking of going
> shorter for fixed gear, say
> > 165's(don't think 167.5's would make much
> difference).
> >
> > Best Regards,
> > Wes Gadd
> >
>
>
>
>
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