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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! |
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#2
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DT's ratcheting 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! |
#3
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DT's ratcheting 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 |
#4
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DT's ratcheting quick release
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 |
#5
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DT's ratcheting quick release
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? |
#6
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DT's ratcheting quick release
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 |
#7
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DT's ratcheting quick release
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. |
#8
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DT's ratcheting quick release
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." |
#9
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DT's ratcheting quick release
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 |
#10
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DT's ratcheting quick release
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 |
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