rec.bicycles.tech Google Group

Re: Polarized sun glasses

2008-05-13T18:07:02Z

Just got a response from Rudy Project. Apparently that sticker is
required by law in Australia on all polarized glasses. They believe I
somehow received a lens that was supposed go down under by mistake.
But Jobst has a good point about not being able to see wet spots on the
road......... :(

Re: External-bearing BBs?

2008-05-13T17:58:38Z

bfd wrote:
Rivendell is the new Fwench!
Chalo

Re: External-bearing BBs?

2008-05-13T17:32:32Z

I disagree, its not only Rivendell pushing the 650B (584mm) wheel
size. For example, QBP, arguably the largest parts distributor in the
US is pushing the 650B Bleriots and supplies all the needed wheel
goodies like tires, rims and complete wheels. Further, other
distributors are getting into the act.

'08 Madone bearing swap - Ceramics

2008-05-13T17:27:12Z

I picked up a set of the aftermarket ceramic bearings, but re-
assembling the cranks with the wavy-washer results in too much binding
in the system and the bearing roll like my steel ones. A teammate
removed the wavy-washer and cobbled something together slightly
slimmer and it works fine, but it's a bit of a hack. Has anyone had

Re: Unwarranted Paselagasm: Now they get creepy

2008-05-13T17:13:24Z

On May 13, 12:00 pm, Ozark Bicycle
Hey, that's the spirit!
You know what it could all be, though...this bit of the ride back from
The Lake, the Heinous Climb from the flood plain of the Stones River
(now used as a ball field, as it's dammed), passes by one of the water
treatment plants. For a good long while I used to think it was a

Re: External-bearing BBs?

2008-05-13T17:09:57Z

OK, presuming the outboard bearing is from the Zipp VumaQuad crankset,
how about checking out the installation manual, which does show the
spindle interface:
[link]

Re: Unwarranted Paselagasm: Now they get creepy

2008-05-13T17:00:15Z

<Fogels smarm and bitter, joyless crap snipped>
Dear Carl,
Why don't you just go fuck yerself?
Cheers!

Re: Unwarranted Paselagasm: Now they get creepy

2008-05-13T16:50:54Z

On Tue, 13 May 2008 07:08:35 -0700 (PDT), landotter
Dear LD,
So it's a matter of your special low-speed balance problem, not
rolling resistance?
That is, your old narrow tires were so "tippy" and the new wider tires
are "far rounder" and "+2mm wider" without kevlar belts, so you can
ride up the hill without losing your balance?

Re: need advice on: Trek 1600 or Felt z70?

2008-05-13T16:49:07Z

Not "hard" per se, but as they're low-spoke, higher tension for no
reason other than fashion--they are more likely to *need* to be
repaired in the first place. Check out the reviews on them here:
[link]
The Felt comes rolling laced on conventional and strong 32H Mavic

Re: Campagnolo wheels...on a car?

2008-05-13T16:46:42Z

At one time Campy made wheels for aircraft as well.

Re: need advice on: Trek 1600 or Felt z70?

2008-05-13T16:26:59Z

qui si... & landotter,
thanks for your comments. do you mean that Treks come with wheels that
are hard to repair?

Re: External-bearing BBs?

2008-05-13T16:17:55Z

If I understand correctly, Peugeots had gotten with the program by the
time MTBs were the dominant bikes on the scene. If that's true, then
there is nothing wrong with a Peugeot MTB versus another sort of MTB
from the same time period. Same with Raleighs; they gave up using
proprietary thread standards by sometime in the '80s, and after that

Re: The zero wind tunnel option for serious cyclists

2008-05-13T16:05:32Z

Depending on the method, .01 m^2 could be pretty big. If reasonable
protocols are followed with the right method, a few to several minutes
of samples. With A-B-A testing, one guy detected the change due to an
aero water bottle of less than that size. Another guy estimated the
change in CdA due to a 5cm x 5cm reference object (i.e., .0025 m^2)

Re: Campagnolo wheels...on a car?

2008-05-13T16:04:17Z

The late and unlamented MV Agusta 600 street bike had mechanical Campy
disc brakes on the front. Hard squeeze, little stoppage.
Phil Brown

Re: The zero wind tunnel option for serious cyclists

2008-05-13T15:18:10Z

That's the necessity my method is intended to circumvent. The common
coastdown method takes a spot reading on some maximum speed and,
generally speaking, derives both power and Cd from there, a procedure
with considerable potential for error.
I certainly don't mean 2% repeatable. I mean a very high degree of