I have run Single speed freewheels on Campy pista hubs for quite some time. I have used several different manufactures too. No problems to date. Mo st of these freewheels (guess I can call them that despite only having one cog) fit pretty close wrt the thread depth of the freewheel vs. that on the track hub.
Just another data point,
Tom Dockery
Los Altos, CA, USA> From: ternst1@cox.net> To: classicrendezvous@bikelist.o
rg; johnb@oxford.net> Subject: Re: [CR]Setting up a single-spd FW on a fixe
d hub!?> Date: Wed, 19 Mar 2008 09:08:43 -0700> > Everyone's experience wil
l be somewhat different, but I've seen several > strip out the threading on
the hub.> Maybe the chainline was off, perhaps the hubs were narrower thre
aded in > amount of threads for purchase area, but most likely the hub may
have had so > many cogs removed that the threads were thin and didn't have
enough bite > depth.> Many single freewheels are a little wider than a sing
le cog, and the single > cog usually sits almost directly above the thread
where the single freewheel > usually sits just a little farther out and cha
nges the angle a little in > relation to the cog thread relationship.> Why
did all those old hubs usually come single side fixed and opposite side > w
ide thread?> Were they for multispeed cogs or single freewheel when guys we
nt to races > and reversed wheel sides.> Were there that many multi-speed f
reewheels in use in England before the > war?> Granted. the factories could
use the same hubs when making bikes and save > cost on sourcing original e
quipment, going into the '70's.> It makes me wonder how much of this was a
typical bicycle hold over in an > industry loathe to change old habits, as
is shown still today in our > threading sizes?> Like I first wrote in my fi
rst post, it's a chance, and not my choice.> Ted Ernst> Palos Verdes Estate
s> California, USA> ----- Original Message ----- > From: "John Betmanis" <j
ohnb@oxford.net>> To: <classicrendezvous@bikelist.org>> Sent: Wednesday, Ma
rch 19, 2008 7:20 AM> Subject: Re: [CR]Setting up a single-spd FW on a fixe
d hub!?> > > > At 11:25 PM 18/03/2008 -0700, ternst wrote:> >> I was going
to respond and forgot. Here's my take:> >>One always takes a chance when pu
tting a freewheel albeit a single on the> >>narrow track hub thread section
.> >>Chances are it will be OK, but an aluminum hub is risky and a steel hu
b > >>mght> >>be OK.> >>Personally I wouldn't do it.> >>The thread stress f
rom the freewheel might be just too much for the hub to> >>hold especially
under hard riding, and you may ruin a hard to replace> >>treasured hub.> >>
You takes your chances. A 3/4/5 speed freewheel, hub suicide, a single> >>f
reewheel, chancy, especially on an alloy hub.> >>Not on any of my bikes on
my watch, neither a recommendation.> >> > I thought about that too, but how
would it be any different than the > > torque> > from a single fixed cog?
In fact, a fixed cog (with a lockring) would> > stress the hub threads in b
oth directions alternately, unlike a freewheel.> > Well, okay, maybe a mult
i speed freewheel would stress the threads when > > the> > chain is on the
small cog, but not a single speed.> >> > John Betmanis> > Woodstock, Ontari
o> > Canada> > _______________________________________________> > Classicre
ndezvous mailing list> > Classicrendezvous@bikelist.org> > http://www.bikel
ist.org/mailman/listinfo/classicrendezvous > > ____________________________