DT's ratcheting quick release

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat.

I suppose they must be referring to quick releases that have a delrin
washer against which the eccentric part of the lever pushes. I'd never
heard of heat posing a problem for them. Wouldn't heat cause the washer
to expand, thus increasing the clamping force? Or is the heat high enough
to actually melt the surface of the washer, reducing the friction that
keeps the lever in place?

If this is true, it suggests another reason why disk brakes and quick
releases are problematic.

The clamping force of the

Quoted message said:

RWS is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes
particularly apparent with disc brakes.

# Safe and easy handling
# Up to 50 % more clamping force than common quick release systems # 100
% disc brake compatible
# No plastic or synthetic material parts in the force flow # Clamping
force not influenced by heat

Given how much they emphasize the problems with disk brake systems,
perhaps this new design is a response to the problem James Annan brought
to our attention.

# Multi-position lever

Quoted message said:

# Axles available: High-strength steel, titanium or aluminum # Lever:
Made of carbon fiber reinforced material # 100% Swiss made

RWS road titan - titanium axles
RWS MTB – steel axles
RWS thru bolt - The thru bolt RWS optimizes the RWS system even more.
Instead of a regular 5 mm quick release axle, a 9 mm front and 10 mm
rear thru bolt is used. Together with a DT Swiss thru bolt hub it offers
an even better connection to the frame and fork than even a standard RWS
as well as any other quick release. The RWS thru bolt system combines
the advantages of a fixed thru axle with the ease of use of a standard
quick release. The RWS thru bolt system is 100 % compatible with any
standard frame or fork that would normally use a quick release!

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

# Safe and easy handling
# Up to 50 % more clamping force than common quick release systems
# 100 % disc brake compatible
# No plastic or synthetic material parts in the force flow
# Clamping force not influenced by heat
# Multi-position lever
# Axles available: High-strength steel, titanium or aluminum
# Lever: Made of carbon fiber reinforced material
# 100% Swiss made

RWS road titan - titanium axles
RWS MTB – steel axles
RWS thru bolt - The thru bolt RWS optimizes the RWS system even more.
Instead of a regular 5 mm quick release axle, a 9 mm front and 10 mm rear
thru bolt is used. Together with a DT Swiss thru bolt hub it offers an
even better connection to the frame and fork than even a standard RWS as
well as any other quick release. The RWS thru bolt system combines the
advantages of a fixed thru axle with the ease of use of a standard quick
release. The RWS thru bolt system is 100 % compatible with any standard
frame or fork that would normally use a quick release!

When I was a kid I put big wingnuts on my Raliegh sportster.

Ron

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

# Safe and easy handling
# Up to 50 % more clamping force than common quick release systems
# 100 % disc brake compatible
# No plastic or synthetic material parts in the force flow
# Clamping force not influenced by heat
# Multi-position lever
# Axles available: High-strength steel, titanium or aluminum
# Lever: Made of carbon fiber reinforced material
# 100% Swiss made

RWS road titan - titanium axles
RWS MTB – steel axles
RWS thru bolt - The thru bolt RWS optimizes the RWS system even more.
Instead of a regular 5 mm quick release axle, a 9 mm front and 10 mm rear
thru bolt is used. Together with a DT Swiss thru bolt hub it offers an
even better connection to the frame and fork than even a standard RWS as
well as any other quick release. The RWS thru bolt system combines the
advantages of a fixed thru axle with the ease of use of a standard quick
release. The RWS thru bolt system is 100 % compatible with any standard
frame or fork that would normally use a quick release!

I don't think I understand this. Do you have one?
What 'carbon reinforced material" has "no plastic"?
How is this different from a wingnut? (same leverage, 2 handles)
How does that short lever with no cam tighten "as well as any quick
release"?
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

A Muzi said:

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

Quoted message said:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Quoted message said:

Here's the text description:

Quoted message said:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

Quoted message said:

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

Quoted message said:

# Safe and easy handling
# Up to 50 % more clamping force than common quick release systems
# 100 % disc brake compatible
# No plastic or synthetic material parts in the force flow
# Clamping force not influenced by heat
# Multi-position lever
# Axles available: High-strength steel, titanium or aluminum
# Lever: Made of carbon fiber reinforced material
# 100% Swiss made

Quoted message said:

RWS road titan - titanium axles
RWS MTB - steel axles
RWS thru bolt - The thru bolt RWS optimizes the RWS system even more.
Instead of a regular 5 mm quick release axle, a 9 mm front and 10 mm rear
thru bolt is used. Together with a DT Swiss thru bolt hub it offers an
even better connection to the frame and fork than even a standard RWS as
well as any other quick release. The RWS thru bolt system combines the
advantages of a fixed thru axle with the ease of use of a standard quick
release. The RWS thru bolt system is 100 % compatible with any standard
frame or fork that would normally use a quick release!

I don't think I understand this. Do you have one?
What 'carbon reinforced material" has "no plastic"?
How is this different from a wingnut? (same leverage, 2 handles)
How does that short lever with no cam tighten "as well as any quick
release"?

And ifit ratchets tight, how the heck do you release it?

A Muzi said:

What 'carbon reinforced material" has "no plastic"?

"No plastic in the force flow". The lever can safely melt away...

Quoted message said:

How is this different from a wingnut? (same leverage, 2 handles)

Being a ratched you can position the lever as you like, a true
benefit for aerodynamics and look, for sure 8)

--
MfG/Best regards
helmut springer

A Muzi said:

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten
up the system by turning the lever clockwise by hand as firm as
possible (min. 15 Nm hand force). Depending on the frame or fork
construction, this can be made by turning the lever several times. Then
put the lever in the optimal position and the wheel is mounted firm and
safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the
RWS is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection
to the frame or fork firmer and therefore stiffer. This becomes
particularly apparent with disc brakes.

# Safe and easy handling
# Up to 50 % more clamping force than common quick release systems #
100 % disc brake compatible
# No plastic or synthetic material parts in the force flow # Clamping
force not influenced by heat # Multi-position lever
# Axles available: High-strength steel, titanium or aluminum # Lever:
Made of carbon fiber reinforced material # 100% Swiss made

RWS road titan - titanium axles
RWS MTB – steel axles
RWS thru bolt - The thru bolt RWS optimizes the RWS system even more.
Instead of a regular 5 mm quick release axle, a 9 mm front and 10 mm
rear thru bolt is used. Together with a DT Swiss thru bolt hub it
offers an even better connection to the frame and fork than even a
standard RWS as well as any other quick release. The RWS thru bolt
system combines the advantages of a fixed thru axle with the ease of
use of a standard quick release. The RWS thru bolt system is 100 %
compatible with any standard frame or fork that would normally use a
quick release!

I don't think I understand this. Do you have one? What 'carbon
reinforced material" has "no plastic"? How is this different from a
wingnut? (same leverage, 2 handles) How does that short lever with no
cam tighten "as well as any quick release"?

I don't have one. They say there's no plastic in the "force flow." I'm
guessing that the lever isn't in the force flow, whatever that is. Maybe
the lever has a metal insert that does the ratcheting. It makes sense to
me that once the plastic lever has been used to tighten the qr, it
wouldn't wouldn't matter if the lever is effected by heat when the bike
is in motion (i.e., when the plastic part of the lever has no function).
By contrast, other qr's use plastic parts to maintain the clamping force
(though I have no idea if DT's claims that they're adversely effected by
heat are true).

I don't have even a guess about your other questions.

Brian Huntley said:

A Muzi said:

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

Quoted message said:

Quoted message said:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Quoted message said:

Quoted message said:

Here's the text description:

Quoted message said:

Quoted message said:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

Quoted message said:

Quoted message said:

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

Quoted message said:

Quoted message said:

# Safe and easy handling
# Up to 50 % more clamping force than common quick release systems
# 100 % disc brake compatible
# No plastic or synthetic material parts in the force flow
# Clamping force not influenced by heat
# Multi-position lever
# Axles available: High-strength steel, titanium or aluminum
# Lever: Made of carbon fiber reinforced material
# 100% Swiss made

Quoted message said:

Quoted message said:

RWS road titan - titanium axles
RWS MTB - steel axles
RWS thru bolt - The thru bolt RWS optimizes the RWS system even more.
Instead of a regular 5 mm quick release axle, a 9 mm front and 10 mm rear
thru bolt is used. Together with a DT Swiss thru bolt hub it offers an
even better connection to the frame and fork than even a standard RWS as
well as any other quick release. The RWS thru bolt system combines the
advantages of a fixed thru axle with the ease of use of a standard quick
release. The RWS thru bolt system is 100 % compatible with any standard
frame or fork that would normally use a quick release!

Quoted message said:

I don't think I understand this. Do you have one?
What 'carbon reinforced material" has "no plastic"?
How is this different from a wingnut? (same leverage, 2 handles)
How does that short lever with no cam tighten "as well as any quick
release"?

And ifit ratchets tight, how the heck do you release it?

"Removal is the reverse of installation."

On Mon, 05 Mar 2007 13:59:01 -0600, Gary Young <[email hidden]>
wrote:

[snip]

Quoted message said:

They say there's no plastic in the "force flow." I'm
guessing that the lever isn't in the force flow, whatever that is.

[snip]

Dear Gary,

"Force flow" is probably just an awkward phrase from a DT Swiss
employee whose English is otherwise reasonably fluent.

He probably meant something like "there's no plastic in the force
path" and was looking for something like "there are no plastic parts
in tension or compression," meaning that after the thing is tightened,
everything directly involved in clamping the axle is metal to metal.

Cheers,

Carl Fogel

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

I have a hard time believing that disc rotors can
transfer heat through the hub and fork end to the
QR mechanism efficiently enough to make heat an
issue.

Does this thing even have serrations on the clamping
surfaces?

A riding partner of mine had a QR that you tightened
by turning the lever rather than clamping an eccentric
cam, like this one. I don't recall if it had a ratchet.
It was made by one of the makers of trick MTB parts
back in the day - maybe by White Industries? I can't
remember. Certainly before disc brakes were common.

This isn't the one I saw, but from the trick parts boneyard,
here's a ratcheting skewer by Gonzo:

http://www.bikepro.com/products/hub_skewers/gonzo_hskew.html

Ben

Quoted message said:

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

Quoted message said:

I have a hard time believing that disc rotors can
transfer heat through the hub and fork end to the
QR mechanism efficiently enough to make heat an
issue.
Does this thing even have serrations on the clamping
surfaces?
A riding partner of mine had a QR that you tightened
by turning the lever rather than clamping an eccentric
cam, like this one. I don't recall if it had a ratchet.
It was made by one of the makers of trick MTB parts
back in the day - maybe by White Industries? I can't
remember. Certainly before disc brakes were common.
This isn't the one I saw, but from the trick parts boneyard,
here's a ratcheting skewer by Gonzo:
http://www.bikepro.com/products/hub_skewers/gonzo_hskew.html

I remember those. No cam, only works in vertical ends.
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

Ben JW? said:

Quoted message said:

I'm curious if any of the engineers here have anything to say about
the merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Quoted message said:

Quoted message said:

Here's the text description:

Quoted message said:

Quoted message said:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated
into any desired position. The handling of the RWS is very simple:
Tighten up the system by turning the lever clockwise by hand as
firm as possible (min. 15 Nm hand force). Depending on the frame or
fork construction, this can be made by turning the lever several
times. Then put the lever in the optimal position and the wheel is
mounted firm and safe.

Quoted message said:

Quoted message said:

The RWS is 100 % disc brake compatible because there are no plastic
or synthetic material parts in the force flow, which means the
clamping force of the RWS is not influenced by heat. The clamping
force of the RWS is up to 50 % higher than what can be achieved
with a common quick release. This is not just safer, but also makes
your wheel connection to the frame or fork firmer and therefore
stiffer. This becomes particularly apparent with disc brakes.

Quoted message said:

I have a hard time believing that disc rotors can transfer heat
through the hub and fork end to the QR mechanism efficiently enough
to make heat an issue.

The problem is that plastics are... plastic and creep under steady
load. It is not a heat problem although heating accelerates creep.

Quoted message said:

Does this thing even have serrations on the clamping surfaces?

Quoted message said:

A riding partner of mine had a QR that you tightened by turning the
lever rather than clamping an eccentric cam, like this one. I don't
recall if it had a ratchet. It was made by one of the makers of
trick MTB parts back in the day - maybe by White Industries? I
can't remember. Certainly before disc brakes were common.

That sounds like wing nuts of old. What an idea!

Quoted message said:

This isn't the one I saw, but from the trick parts boneyard, here's
a ratcheting skewer by Gonzo:

http://www.bikepro.com/products/hub_skewers/gonzo_hskew.html

This is all an effort to make an old reliable device used by
professional racers to be fool proof. That's hard to do. See lawyer
lips etc.

Jobst Brandt

<[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Gary Young said:

I'm curious if any of the engineers here have anything to say about the
merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Here's the text description:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated into
any desired position. The handling of the RWS is very simple: Tighten up
the system by turning the lever clockwise by hand as firm as possible
(min. 15 Nm hand force). Depending on the frame or fork construction,
this can be made by turning the lever several times. Then put the lever
in the optimal position and the wheel is mounted firm and safe.

The RWS is 100 % disc brake compatible because there are no plastic or
synthetic material parts in the force flow, which means the clamping
force of the RWS is not influenced by heat. The clamping force of the RWS
is up to 50 % higher than what can be achieved with a common quick
release. This is not just safer, but also makes your wheel connection to
the frame or fork firmer and therefore stiffer. This becomes particularly
apparent with disc brakes.

I have a hard time believing that disc rotors can
transfer heat through the hub and fork end to the
QR mechanism efficiently enough to make heat an
issue.

Does this thing even have serrations on the clamping
surfaces?

A riding partner of mine had a QR that you tightened
by turning the lever rather than clamping an eccentric
cam, like this one.

With Ringles you had a not very eccentric cam, after closing the lever, you
tightened up like this DT one. I still have a Ringle on the back of this
bike:

http://www.2fortheroad.net/soma3.jpg

Greg

G.T. said:

Quoted message said:

A riding partner of mine had a QR that you tightened
by turning the lever rather than clamping an eccentric
cam, like this one.

With Ringles you had a not very eccentric cam, after closing the lever, you
tightened up like this DT one. I still have a Ringle on the back of this
bike:

http://www.2fortheroad.net/soma3.jpg

Like these?

http://www.bikepro.com/products/hub_skewers/ring_twst_hskewr.html

I don't get why anyone liked these over the standard
cam design. But people did all sorts of funny things
during the trick parts era. See here for a selection
of mostly-vanished boutique skewers:
http://www.bikepro.com/products/hub_skewers/h_skewer.html

As I've said here before, bikepro.com is the Burgess Shale
of fossilized remnants of the MTB parts evolutionary
explosion. As usual in these periods of species
proliferation, most of the varieties die off leaving
no offspring, while a few become the progenitors
of the genera we see today. Sometimes an anachronism
survives to the present day, like coelocanths or
purple Avid Tri-Dangles.

Ben Weiner

<[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

G.T. said:

Quoted message said:

A riding partner of mine had a QR that you tightened
by turning the lever rather than clamping an eccentric
cam, like this one.

With Ringles you had a not very eccentric cam, after closing the lever,
you
tightened up like this DT one. I still have a Ringle on the back of this
bike:

http://www.2fortheroad.net/soma3.jpg

Like these?

http://www.bikepro.com/products/hub_skewers/ring_twst_hskewr.html

I don't get why anyone liked these over the standard
cam design.

Close, actually the earlier version that still looked like a regular QR but
for which you still had to twist after closing.

I was a weight weenie in the late 80s/early 90s until I saw the light (and
gained a lot of weight making it absurd to keep a light bike).

Greg

Quoted message said:

Ben JW? said:

Quoted message said:

I'm curious if any of the engineers here have anything to say about
the merits of DT's new ratcheting quick releases:

http://content.mtbr.com/TRP_13_301_7crx.aspx

Quoted message said:

Quoted message said:

Here's the text description:

Quoted message said:

Quoted message said:

Unlike the 80 year old eccentric principle use on standard quick
releases, the RWS builds up clamping force by tightening a bolt
connection with a lever. The lever can then be raised and rotated
into any desired position. The handling of the RWS is very simple:
Tighten up the system by turning the lever clockwise by hand as
firm as possible (min. 15 Nm hand force). Depending on the frame or
fork construction, this can be made by turning the lever several
times. Then put the lever in the optimal position and the wheel is
mounted firm and safe.

Quoted message said:

Quoted message said:

The RWS is 100 % disc brake compatible because there are no plastic
or synthetic material parts in the force flow, which means the
clamping force of the RWS is not influenced by heat. The clamping
force of the RWS is up to 50 % higher than what can be achieved
with a common quick release. This is not just safer, but also makes
your wheel connection to the frame or fork firmer and therefore
stiffer. This becomes particularly apparent with disc brakes.

Quoted message said:

I have a hard time believing that disc rotors can transfer heat
through the hub and fork end to the QR mechanism efficiently enough
to make heat an issue.

The problem is that plastics are... plastic and creep under steady
load.

plastics creep under steady load??? sweet kenneth & george.

Quoted message said:

It is not a heat problem although heating accelerates creep.

what do /you/ know about creep jobst? that "plastics creep under steady
load"?

Quoted message said:

Quoted message said:

Does this thing even have serrations on the clamping surfaces?

Quoted message said:

A riding partner of mine had a QR that you tightened by turning the
lever rather than clamping an eccentric cam, like this one. I don't
recall if it had a ratchet. It was made by one of the makers of
trick MTB parts back in the day - maybe by White Industries? I
can't remember. Certainly before disc brakes were common.

That sounds like wing nuts of old. What an idea!

Quoted message said:

This isn't the one I saw, but from the trick parts boneyard, here's
a ratcheting skewer by Gonzo:

http://www.bikepro.com/products/hub_skewers/gonzo_hskew.html

This is all an effort to make an old reliable device used by
professional racers to be fool proof. That's hard to do. See lawyer
lips etc.

Jobst Brandt

Quoted message said:

Quoted message said:

It is not a heat problem although heating accelerates creep.

what do /you/ know about creep jobst? that "plastics creep under
steady load"?

I heard once that the glass in the window panes of old buildings creeped
because they were so old and glass is really an amorphous solid. They
creeped downwards, and incidentally, upwards, too! 😉 Just kiddin

--
Phil

Phil said:

Quoted message said:

Quoted message said:

It is not a heat problem although heating accelerates creep.

what do /you/ know about creep jobst? that "plastics creep under
steady load"?

I heard once that the glass in the window panes of old buildings creeped
because they were so old and glass is really an amorphous solid. They
creeped downwards, and incidentally, upwards, too! 😉 Just kiddin

--
Phil

I don't understand where the joke/kidding starts and/or ends, but yes,
100 yr old glass is very wavy, to the point of making it quite hard to
make things out looking out the windows, and it adds a great flavor to
living in an old house. And I used to scour the alley for throwaway
to replace broken panes. They make something new that looks somewhat
like it, but it is unmistakedly not the same. Clear new glass really
stands out like a sore thumb in an old house, and has a very negative
impact on an old room filled with big wavy glass sashes.

Bill Westphal

On Tue, 06 Mar 2007 02:12:23 -0700, Bill Westphal <[email hidden]>

Quoted message said:

Phil said:

Quoted message said:

> It is not a heat problem although heating accelerates creep.

what do /you/ know about creep jobst? that "plastics creep under
steady load"?

I heard once that the glass in the window panes of old buildings creeped
because they were so old and glass is really an amorphous solid. They
creeped downwards, and incidentally, upwards, too! 😉 Just kiddin

--
Phil

I don't understand where the joke/kidding starts and/or ends, but yes,
100 yr old glass is very wavy, to the point of making it quite hard to
make things out looking out the windows, and it adds a great flavor to
living in an old house. And I used to scour the alley for throwaway
to replace broken panes. They make something new that looks somewhat
like it, but it is unmistakedly not the same. Clear new glass really
stands out like a sore thumb in an old house, and has a very negative
impact on an old room filled with big wavy glass sashes.

Bill Westphal

The flow rate of ordinary glass at normal temperatures is so minute
that it essentially is solid; some calculations have indicated that
for a pane of windows glass to thicken by a few atoms would take
billions of years.

Old glass windows were "wavy" to start with.

jim beam said:

[email hidden] wrote:

Quoted message said:

Quoted message said:

The problem is that plastics are... plastic and creep under steady
load.

plastics creep under steady load??? sweet kenneth & george.

Quoted message said:

It is not a heat problem although heating accelerates creep.

what do /you/ know about creep jobst? that "plastics creep under steady
load"?

Plastics don't creep?