DT's ratcheting quick release

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!

On Mon, 05 Mar 2007 00:43:48 -0600, Gary Young wrote:

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
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
# 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!

On Mon, 05 Mar 2007 00:43:48 -0600, Gary Young wrote:

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 wrote:
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

On Mar 5, 2:39 pm, A Muzi wrote:
Gary Young wrote:
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"?

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

A Muzi wrote:
What 'carbon reinforced material" has "no plastic"?

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


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

On Mon, 05 Mar 2007 13:39:21 -0600, A Muzi wrote:

Gary Young wrote:
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.

On Mar 5, 1:53 pm, "Brian Huntley" wrote:
On Mar 5, 2:39 pm, A Muzi wrote:





Gary Young wrote:
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"?

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
wrote:

[snip]

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

On Mar 4, 11:43 pm, Gary Young wrote:
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_...nzo_hskew.html

Ben