Also, about how tight which fastening system holds a wheel in--the holding
power of quick releases could be overestimated if you're too impressed with
how much a tightened qr compresses the bearings in a hub. A quick release
pushes all of the parts involved together but wouldn't a sold axle with nuts
be pulling them slightly apart? Classic content--the compressing effect of
a qr makes Maxicars and original Mavic SSC hubs look like an even better
design job considering they both can have bearing load adjusted when the
wheel is in a bike and the skewer is locked--Campagnolo only caught up with
that one three years ago!
David Feldman
Vancouver, WA
<warbetty@sympatico.ca> Cc: <classicrendezvous@bikelist.org> Sent: Thursday, March 28, 2002 8:12 AM Subject: Re: [CR]Track ENDS/Nutted Fasteners
> on 3/28/02 6:37 AM, Tom Dalton at tom_s_dalton@yahoo.com wrote:
>
> >
> > And now mine...
> > Whatever Curt Harnett and Marty Nothstein prefer is probably based on
the
> > established standards for track racing. I may be totally wrong on this
one
> > (really) but I have the impression that QR skewers, properly adjusted,
exert
> > more force on the dropout face than track axle nuts, properly torqued.
This
> > may just be some theoretical gibberish based on thread pitches and cam
> > profiles that totally breaks down becasue it doesn't account for various
> > frictional forces, the area of contact between fastener and frame and so
on,
> > but I have read (in more than oine place) that QRs grip better. As I
recall,
> > this discussion was always in the context of arguements surrounding yet
> > another QR product liability suit. In any event, I can see where
elastic
> > deformation of the skewer itself may be significant enough to cause a
wheel to
> > let go under extreme loads. But, while Marty may exert three (okay,
five)
> > times the force on the pedal that the rest of us do, I'll speculate that
many
> > of us are just as likely as he is to pull a wheel due to the extreme
loads
> > allowed by the 24x32 gearing on our touring bikes.
> > Tom Dalton
> > Bethlehem, PA
> > Warren & Elizabeth <warbetty@sympatico.ca> wrote: My turn to
speculate...
> >
> > First, they are track ends, not dropouts. Nutted axles are perceived to
be
> > stronger than quick release although there appear to many riders who say
> > QR's are sufficient. Try selling that to Curt Harnett and Marty
Nothstein.
> >
> > CR content...on many of the older fixed road bikes , axle retainers were
> > used in conjunction with track ends, providing the ultimate in wheel
> > security. They also make chain tension and wheel alignment a cinch. Yes
> > they are a pain when changing a flat but who thinks about that when they
go
> > out for a ride.
> >
> > Warren Young
> > Toronto
> >
> >
> >
> > A follow up to the drop out question.
> >>
> >> Why are the wheels on fixed gear/track bicycles
> >> attached with nutted fasteners rather than quick release type skewers
used
> >> on road bicycles?
> >>
> >> Track/Fixed gear rear wheel attachment seems to be distinctly different
> >> from a road,but the front seems to be the same.
> >>
> >
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> >
> >
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> All- I agree, a quality quick release in the locked position both more
> convienient and more(I firmly belive) secure than an axle nut. Years ago I
> ran my touring bike with Campy track axles. The nuts (especially on the
> front) continually vibrated loose. However as an experienced track rider
> I've bounced my front wheel off of too many competitors bikes during races
> that I would relish a fat target like a QR lever. QR end loads high
enough
> to secure the wheel distort the hollow axle enough to bind the hub. Try
> mounting a bare QR hub (sans spokes/rim) in a frame and close the quick
> release. Unless the hub is adjusted with side play it will bind. It has to
> be worse when the rider is sitting on the bike. To a trackie the smoother
> running traditional track set up (imagined or real) is faster.
> My very classic 1975 Holdsworth Pro Sprint now used only as a road fix
> gear has non traditional quick release...who wants to carry a "peanut
> butter" wrench!
> T. Shaw
> Santa Clara, California
>
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