Physics for marketing professionals

LLLLLLLLLLLLLLL




1 April, 1972

If these spokes pull rim for forward movement n pull to build....the build stress riser is at the last few spokes turned ?

that is unlike 'normal' spokes, these spokes do not pull to hub center, the new spokes pull along rim, possibly pulling outward as well or not well as the case maybe.

http://goo.gl/acQ49p



nnnnnnnnnnnn

On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n


Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)
--
Cheers,

John B.

On Friday, March 27, 2015 at 7:32:40 PM UTC-4, John B. Slocomb wrote:
On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n


Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)
--
Cheers,

John B.

lacing reality

On 3/27/2015 6:32 PM, John B. Slocomb wrote:
On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n


Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)


No particular reason aside from cost, weight and convenience.

Since Kevlar-Aramid spokes work just fine, a steel cable is
a logical extension.
http://www.yellowjersey.org/fiberfix.html

I've ridden a rear wheel with two of those for a few years
now (can't change spokes otherwise in that wheel).

There's prior art, a Dutch steel cable replacement spoke
named Simson from Mijdrect Holland NL. I have not used one.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971

SEEMS improbable but ...? there are nuts on every tree

as you know I made contact with the tensile tower outside the DC Smithsonian aerospace museum.

practically, we would need a form....and more than the Berto Beam...for building the wheel.

Gee whiz...I remember asking Andy abt this years ago....and others who said explicitly DAMN PITA is what...but not Muzi off course. Of exotic solid spoke wheels. I had pined via Colorado Cyclist for straight pull fiberglass spoke wheels to go with my R5 and Turbo 6 914.

here, eat this: http://goo.gl/Dy1jO5

so where's the intelligent analysis of the sideways spoke pull ? ...after all the whoha abt straight pulls heres a tangential pull....

On Sat, 28 Mar 2015 07:29:28 -0500, AMuzi wrote:

On 3/27/2015 6:32 PM, John B. Slocomb wrote:
On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n


Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)


No particular reason aside from cost, weight and convenience.

Since Kevlar-Aramid spokes work just fine, a steel cable is
a logical extension.
http://www.yellowjersey.org/fiberfix.html

I've ridden a rear wheel with two of those for a few years
now (can't change spokes otherwise in that wheel).

There's prior art, a Dutch steel cable replacement spoke
named Simson from Mijdrect Holland NL. I have not used one.

Aren't there some sort of cable spokes sold for "on the road" repairs
of a broken drive side spoke? I have seen them described on the Web
although never saw one for sale in the local shops.
--
Cheers,

John B.

On 3/27/2015 6:33 PM, jbeattie wrote:
On Friday, March 27, 2015 at 2:17:21 PM UTC-7, David Scheidt wrote:
Frank Krygowski wrote:
:On 3/27/2015 4:00 PM, James wrote:

: I'd love to read Jobst's review of these spokes.
:
:My first thought, too.

Look at them stress risers.

Yup, and then we would get to talk about the old days of crappy Alpine and Union spokes; how stress relieving cures all evils and how in ten trillion miles he hasn't broken a DT 15/16 Competition spoke -- and that no heavier spoke is needed (presumably ever). He would rail on "botique" wheels (which now dominate the market and are no longer botique -- any more than CF frames are botique.) Hmmm, what else? Probably something about the nipple design. He certainly wouldn't like the aluminum option.

Jay, Jobst was an extremely sharp engineer. I learned a lot from him,
as did a lot of other engineers.

That's not to say that I agreed with all his views. But the nature and
quality of his knowledge was such that I'd consider very carefully
whatever he'd say about these spokes.

--
- Frank Krygowski

On 3/28/2015 7:25 PM, John B. Slocomb wrote:
On Sat, 28 Mar 2015 07:29:28 -0500, AMuzi wrote:

On 3/27/2015 6:32 PM, John B. Slocomb wrote:
On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n


Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)


No particular reason aside from cost, weight and convenience.

Since Kevlar-Aramid spokes work just fine, a steel cable is
a logical extension.
http://www.yellowjersey.org/fiberfix.html

I've ridden a rear wheel with two of those for a few years
now (can't change spokes otherwise in that wheel).

There's prior art, a Dutch steel cable replacement spoke
named Simson from Mijdrect Holland NL. I have not used one.

Aren't there some sort of cable spokes sold for "on the road" repairs
of a broken drive side spoke?

Um... you might try clicking Andrew's link.


--
- Frank Krygowski

On Saturday, March 28, 2015 at 6:25:38 PM UTC-5, John B. Slocomb wrote:
On Sat, 28 Mar 2015 07:29:28 -0500, AMuzi wrote:

On 3/27/2015 6:32 PM, John B. Slocomb wrote:
On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n


Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)


No particular reason aside from cost, weight and convenience.

Since Kevlar-Aramid spokes work just fine, a steel cable is
a logical extension.
http://www.yellowjersey.org/fiberfix.html

I've ridden a rear wheel with two of those for a few years
now (can't change spokes otherwise in that wheel).

There's prior art, a Dutch steel cable replacement spoke
named Simson from Mijdrect Holland NL. I have not used one.

Aren't there some sort of cable spokes sold for "on the road" repairs
of a broken drive side spoke? I have seen them described on the Web
although never saw one for sale in the local shops.
--
Cheers,

John B.

http://www.amazon.com/FiberFix-Emerg.../dp/B001GSMQZC

On Sat, 28 Mar 2015 06:32:36 +0700, John B. Slocomb
wrote:

On Fri, 27 Mar 2015 09:43:24 -0500, AMuzi wrote:

http://www.bikerumor.com/2015/03/22/...spoke+desig n

Why not just use steel cable for wheel spokes? After all Suspension
bridges use steel cable :-)

Because the cable will rotate at the nipple when tensioned, which will
either increase or decrease the tension depending on which direction
the wire rope is spun. You could glue it in place where the wire rope
meets the nippel, but then it will rotate the nipple at the rim.
Designing the nipple to interface with the wire rope will also be a
challenge. The lack of laminar flow over the rather rough wire rope
surface, as compared to a smooth spoke, will add to the wind
resistance.

Ok, my turn. How about a 360 spoke wheel, where the spokes are made
from nylon or Kevlar fishing line? The 90% lower tension per spoke
would allow for the use of very thin string or line. Building such a
wheel might seem difficult, but with a lacing and tensioning fixture
similar those used for tennis rackets, I think it should be possible.
Balancing the string tension could be done with a guitar string tuner.

One nice feature is that with 360 strings, breaking a few will
probably not even be noticed. Should a string be wrapped around
something (like the forks or seat stays), it's thin enough to break
before it causes a crash.



--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558