Matthew,
I must admit that your problem defies logic - sort of - and i s not in accord with what is "supposed" to happen. But such is real life :-) It is puzzling that a symmetrical 111mm spindle doesn't work, since that should be what goes with a standard track setup.
Still, if the as ymmetrical 115mm spindle is too tight, then it would seem impossible for th e 111mm spindle to work. That is, the 115mm spindle should have 2.5 to 3 e xtra millimeters on the drive side when compared to the 111mm piece. So th e 111mm spindle would have to bring the crank even closer to the chainstay.
What was the chainline measurement with the 115mm spindle? If it was actually something like 42 or 42.5mm, I would have to think that your cran k arm's tapers have been stretched. That is, a new crank arm with a symmet rical 111mm spindle should provide a chainline of 42mm to 43mm. So I would expect the 115mm spindle to give you a chainline of at least 45mm, perhaps even 46mm.
In fact, using the chainline as a reference point might be the best approach to understanding what is happening. Otherwise, you migh t be in for new surprises when you finally find a 151 BCD crank arm.
Best regards, Fred Rednor - Arlington, Virginia (USA)
> F
rom: devotion finesse <devotion_finesse@hotmail.com>
> Subject: [CR] My C
ampy BB Woe Of The Month!
> To: "CR discussion list" <classicrendezvous@b
ikelist.org>
> Date: Friday, March 27, 2009, 12:06 AM
>
> Gang,I am
in the process of setting up my mid-50's Frejus
> track bike with
> a
mix of period components and 70's Nuovo Record
> bits...The darn BB has c
ontinually caused me a headache.
> This is my latest. To get the bike on
the
> road with what I had kicking around, I was previously
> running t
he bike with a combo of Dura Ace cups, a
> Campy 70-SS spindle and Cam
py NR "strada"
> crank arms (inner ring lip ground down). A little
> close to the chainstay.
> Not ideal. But it got the job done...Until
I found the
> ideal solution:Or w
> hat I thought to be the ideal solut
ion: When used with a NR
> crankset, the
> best case scenario would be
a Nuovo Record pista BB,
> right? "70-P-120"
> spindle? Given that
the bike (a) has a 70mm BB shell (b) is
> a P-ista and (c
> ) has rear
spacing of 120...all oughtta be A-O-K. But
> it isn't.This BB has
>
a 111mm spindle, which is too dang short for said crankarm
> to work wi
tho
> ut hitting the chainstay. My question is, did
> "70-P-120" spi
ndles come i
> n multiple lengths? The 70-SS spindle was a
> 115mm.
Is this likely the appropriate length for the bike?
> When I do final
ly get around to getting 151
> B.C.D./inch pitch Campy crankarms, what B
B/spindle combo is
> gonna be right?Matthew BowneBrooklyn, New York