Hi Tobit,
This is just the kind of info I was hoping to get from my awkwardly worded questions.
So many thanks,
Paul
Dr. Paul J. Wilson paul@wilsondesigns.net Temecula, CA. 92590
On Oct 26, 2009, at 2:17 AM, tobit linke wrote:
> Hi Paul,
>
> I've covered a 5 tooth difference with Campy 1010 (road) dropouts,
> with a slot of 37mm end-end or 32mm center-center (of the axle).
>
> With a different chainstay length, i might have had to use a half
> link.
>
> So about every 1/4 inch of usable (center-center) slot will
> compensate 1 tooth difference
> in the most ideal case.
>
> Another limiting factor is brake pad alignment, and with horizontal
> track ends
> (road dropouts are slightly angled) this will probably make it
> impossible to ride more
> than 1-2 teeth difference without readjusting the brake pads.
> (This depends on the width of the brake surface and shape of the
> brake pad too).
>
> Flip-flopping(?) wheels on the road is no fun.
> The 42:17/22 fixed/free setup i used on an off-road bike, with the
> fixed gear as an
> on-road option.
> In spite of dropouts and a quickrelease axle (both of which make
> flip-flopping easier),
> i usually would just pedal faster on pavement, or take public
> transport.
>
> For a road bicycle I'd opt for 2 closely spaced all purpose gears
> (e.g. 18/20, with
> the 48 chainwheel) and choose between the gears based on daily/
> weekly/seasonal form and preference rather
> than expect flipping the wheel on the road.
>
> Tobit Linke,
>
> too lazy to change gears in
>
> Dortmund, Germany
>
>
>
>
>
> > Message: 11
> > Date: Sun, 25 Oct 2009 17:43:44 -0700
> > From: "Dr. Paul J. Wilson" <>
> > Subject: Re: [CR] "Path Racer" "Road-Path" NOW Legnano
> > To: <edvintage63@aol.com>
> > Cc: aldoross4@siscom.net, ritzmon@sbcglobal.net, CLASSIC RENDEZVOUS
> > <classicrendezvous@bikelist.org>
> > Message-ID: <2B9C88A4-52E0-4C25-A96D-09065BE6652C@yahoo.com>
> > Content-Type: text/plain; charset="US-ASCII"; format=flowed;
> delsp=yes
> >
> > Hi All, and Ed,
> >
> > I don't have near enough knowledge to respond to Ed's question.
> >
> > And so, I have a related question.
> > I live in a very very steep hilly area and want to ride to town
> (very
> > flat) & back on my Legnano Pista.
> > I have a "flip-flop" Campy rear wheel that I would like to set up
> with
> > a freewheels 22 or hopefully 24 and on the opposite side of the
> hub a
> > 15 or hopefully a 14.
> > And the question is, how small of a Campy chainring can I put on the
> > front. It now has a Campy Pista 48. Taking a 41 that I have lying
> > around shows that it is a tiny bit too small. Will a 42 fit? And
> if it
> > does, I would love to buy one from someone.
> > Also, what differential range of gearing will the dropouts handle?
> Do
> > I have to go 15/20, or can I get away with 15/22, or 14/20, or
> 14/22?
> >
> > Here is the description of what I bought on eBay 8-2008. Some of you
> > may remember.
> >
> > I am going to call this a 1969 Italian Path Racer
> >
> > Late 1960's early 1970's original Legnano with track drop-outs and
> > front and rear brake bosses. All seems very professionally done.
> >
> > Can you say Italian Path Racer? Wierd I know....
> >
> > The bike has sew-up rims which I replace with Rigida clincher rims
> > laced with DT Swiss spokes to the original Campagnolo Pista hubs.
> >
> > The bike features front and rear Universal Super 68 brakes with NOS
> > Campy cables which I added the rear as the frame feature a brake
> boss
> > at the rear and I wanted a 'finished' look.
> >
> > I would guess this to be a custom Legnano as in my research I could
> > not find a pista with brake bosses front and rear. Servicing the
> > headset there were no numbers on the fork tube and it appears to be
> > original and there is no sign of the fork ever having been painted.
> > Under the bottom bracket is the numbers 6125R
> >
> > There is no touch-up done anywhere on the paint and other than an
> area
> > of the head tube decal lifting the paint off (Chrome underneath) the
> > paint is very good with normal chips and decal scrapes for age of
> bike.
> >
> > Specs: * Legnano Chrome Fork * Campagnolo Light Blue Frame (56
> > cm) * Campagnolo Seat Post * Campagnolo Handlebar Post (Fully-
> > Adjustable) * Campagnolo Pedal & Toe Clips with original
> > harness * Cinelli (Milano) Handlebars * Weinman Brakes *
> > Fiame Rims (Double-butted spokes) * Avocet Seat * Brooks
> > (England) Saddle * Reynold 531 Tubing * Silca (Milano) Pump *
> > Campagnolo Wrench (in saddle pouch)
> >
> > Thanks for any technical help out there.
> >
> > Dr. Paul J. Wilson
> > paul@wilsondesigns.net
> > Temecula, CA. 92590
> >
>
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