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Tubeless rims?

Old 11-20-13, 09:16 AM
  #1  
dalava
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Tubeless rims?

Had two more pinch flats on my clinchers last couple of weeks, I am going total tubeless. I already had a set built up with the Stan's Alpha 340 with American Classic/PowerTap hubs. They are pretty good but a bit flexy for my taste. So I am looking to build another set and am looking for different rim options. I am 160lb (+/-5) and decidedly not a sprinter. I will build this set on a kind of budget (using Novatec hubs for BDop, CX-ray spokes and brass nipples). The thing about tubeless is that there are no industry standards. So you have rims from "tubeless-ready" to "tubeless-friendly" to "tubeless compatible" to "you could run them tubeless if...".

I did some research and from what I read, here are the rim options in addition to the Stan's:

- Pacenti 23SL (tubeless ready)
- H Plus Son Archetype (tubeless friendly?)
- HED C2+ (tubeless compatible - what does that mean?)
- Velocity A23 (tubeless ready)
- Kinlin XR270 (maybe?)

Does anyone have any experience/comments about these or other rims?
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Old 11-20-13, 09:30 AM
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Not sure if you already own the parts or are buying, and frankly I normally wouldn't recommend a pre-built system but I believe the Bontrager Race Lite are specific to tubeless. Fairly good weight and reasonable price. I am the same weight and like these immensely. Unfortunately I don't know much about the rims you mention above.

https://www.slowtwitch.com/Products/T...view_3043.html
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Old 11-20-13, 09:33 AM
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I ran the Pacenti rims tubeless, and they worked quite well. I'm thinking about converting my Archetypes to tubeless, but haven't done it yet.
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Old 11-20-13, 09:51 AM
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Originally Posted by MileHighMark View Post
I ran the Pacenti rims tubeless, and they worked quite well. I'm thinking about converting my Archetypes to tubeless, but haven't done it yet.
If you do, let me know how they work out. How is your Pacenti tubeless? Reviews are pretty good. Anything to be aware of?
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Old 11-20-13, 10:03 AM
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Originally Posted by dalava View Post
If you do, let me know how they work out. How is your Pacenti tubeless? Reviews are pretty good. Anything to be aware of?
Mounting tubeless tires on the Pacenti rims can be a bit tough. It took a lot of effort to get Hutchinson Sector 28 tires on the rims. Even using every trick I knew, much swearing ensued. Once the tires were actually on the rims, though, the beads seated with only a floor pump.

If you click on the link in my previous post, it'll take you to my review of the SL23 rims. Clicking here will take you to my Sector 28 review.
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Old 06-17-14, 04:40 PM
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I'm giving this thread a bump. I'm looking to build a new wheelset soon, and I'm tempted to go for this new fangled technology. However it does seem like there aren't many rim options available if you don't want to buy a full factory wheel combo.

Here's the other thing, I want a true tubeless rim, not a clincher built up with various Stan's tapes. The reason why is that as I understand it, a tubeless rim has a bead lock which closely holds the tubeless tire's square shaped bead. Makes it more difficult to mount, but also stays sealed. One major advantage of this is safety. If you have a blowout, the tire stays mounted on the rim and keeps some rubber between your wheel and road. You have a better chance of staying in control. Kinda like a tubular.

Do the Pacenti SLs and other "tubeless ready" rims have that precisely made square bead lock?

It would be easier and cheaper to stick with a clincher rim, but since I expect these to last a long time, now is my chance to adopt this technology if I'm going to.
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Old 06-17-14, 04:50 PM
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Originally Posted by dalava View Post
Had two more pinch flats on my clinchers last couple of weeks, I am going total tubeless. I already had a set built up with the Stan's Alpha 340 with American Classic/PowerTap hubs. They are pretty good but a bit flexy for my taste. So I am looking to build another set and am looking for different rim options. I am 160lb (+/-5) and decidedly not a sprinter. I will build this set on a kind of budget (using Novatec hubs for BDop, CX-ray spokes and brass nipples). The thing about tubeless is that there are no industry standards. So you have rims from "tubeless-ready" to "tubeless-friendly" to "tubeless compatible" to "you could run them tubeless if...".

I did some research and from what I read, here are the rim options in addition to the Stan's:

- Pacenti 23SL (tubeless ready)
- H Plus Son Archetype (tubeless friendly?)
- HED C2+ (tubeless compatible - what does that mean?)
- Velocity A23 (tubeless ready)
- Kinlin XR270 (maybe?)

Does anyone have any experience/comments about these or other rims?

Wheelbuilder.org reviews those rims here: Pacenti SL23 Review - WheelBuilder.org

I have the Bontrager Race rims on my Domane and they are also tubeless ready. The Race Lites are considerably lighter if you want that, and not too expensive.

Shimano also has prebuilt wheels that are tubeless ready and they've gotten good reviews.

I may go with some Hed rims and tubeless in the future; I've had 2 flats on the last two rides. Bad karma

My LBS likes the Stans and the Velocity rims. He's only done a couple of the Heds but said they were nice and no trouble building up.


Yes, Tubeless ready means they have the rim bead designed for tubeless tires.
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Old 06-18-14, 01:41 AM
  #8  
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Pacenti Tubeless

Originally Posted by bbattle View Post
Wheelbuilder.org reviews those rims here: Pacenti SL23 Review - WheelBuilder.org

I have the Bontrager Race rims on my Domane and they are also tubeless ready. The Race Lites are considerably lighter if you want that, and not too expensive.

Shimano also has prebuilt wheels that are tubeless ready and they've gotten good reviews.

I may go with some Hed rims and tubeless in the future; I've had 2 flats on the last two rides. Bad karma

My LBS likes the Stans and the Velocity rims. He's only done a couple of the Heds but said they were nice and no trouble building up.


Yes, Tubeless ready means they have the rim bead designed for tubeless tires.
I have 1300 miles on my Pacenti with Hutchinson Fusion built by Ergott. No flats. Had one incident where I ran over a wire. Pulled the wire, Lost some some of Stans fluid and pressure went down to 45. Stopped and added some air and have no incidents since, have been holding pressure with no problems. (By the way, the Ride is smooth and trustworthy with the tubeless and 85psi) I live in goat head land, so 1300 miles without a flat is unheard of.
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Old 06-20-14, 05:36 PM
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Originally Posted by dcktr View Post
I have 1300 miles on my Pacenti with Hutchinson Fusion built by Ergott. No flats. Had one incident where I ran over a wire. Pulled the wire, Lost some some of Stans fluid and pressure went down to 45. Stopped and added some air and have no incidents since, have been holding pressure with no problems. (By the way, the Ride is smooth and trustworthy with the tubeless and 85psi) I live in goat head land, so 1300 miles without a flat is unheard of.
Thanks for the review. No problems mounting the Fusions I take it? I see they have a 25mm tire now, I'd be interested in that. I don't get that many flats in Western WA, tubeless would be more for ride quality and safety improvements (tire staying on the rim in a blowout). I did spend a weekend over in the Yakima Valley and it was goathead land. Did two rides, got two flats! I could definitely see wanting tubeless over there.
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Old 06-20-14, 11:52 PM
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Here's a good link that explains tubeless rim features.
RoadTubeless vs standard rims Wheelworks.co.nz ? Handbuilt wheels

Basically, there's a flat spot for the bead lock. You can see it clearly in this image.

If the rim doesn't have the flat section, its not a true tubeless rim and probably won't seal without sealant.

The SL23, C2+, and A23 all have the flat bead lock section. The other rims don't and are basically just converted clinchers.
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Old 06-21-14, 01:30 PM
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You'll probbaly want to go with a real tubeless rim as opposed to a converted set up. I have a set of fulcrum racing zeros. They aren't that flexy (i'm a sprinter), and ride pretty well. I like my hutchinson tubeless set up (although i had to replace the front after just over 1.5 months (2000 or so miles). Not a happy moment)
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Old 06-21-14, 04:40 PM
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I just had a set built with Pacenti SL23s. While they are not as impressive (quality-wise) as the HEDs, they are close enough. I'd use those or the HEDs. Good rims but I am currently not using them tubeless. However, any tubeless rim will work perfectly. I heard the Stan's rims were a bit soft so did not go with them.
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Old 06-22-14, 08:07 AM
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I am pretty much all tubeless on all my bikes now (don't ask what's my n+1). I built a set of DT Swiss RR465 with The 240 hubs, had a hell of a time mounting and inflating the Schwalbe One. It turned out I needed valve stems with bigger base because the holes on these DT Swiss rims are bigger. So far so good. They are not aero, but pretty light. Just a tad over 1400 grams.

i just bought a set of Easton ex90slx tubeless on chainlove for $650 with the new echo hubs and 11 speed compatible. Really easy to mount the Fusion 3 tires, no fuss. Haven't ridden them yet to know how they perform, but it's a good deal I couldn't pass up on.

i ended up didn't build with any of the rims above.
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Old 06-22-14, 08:39 AM
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Originally Posted by dalava View Post
I am pretty much all tubeless on all my bikes now (don't ask what's my n+1). I built a set of DT Swiss RR465 with The 240 hubs, had a hell of a time mounting and inflating the Schwalbe One. It turned out I needed valve stems with bigger base because the holes on these DT Swiss rims are bigger. So far so good. They are not aero, but pretty light. Just a tad over 1400 grams.
My Stan's Alpha 340's came with the tubeless valve gasket sitting on TOP of the Stan's rim tape. The hole in the tape is meant to be small, just enough for the metal valve to go through, not the gasket. Prior to this I had my LBS convert my tubeless ready Giant P-SL0 wheelset to tubeless and they made the hole size in the tape so that the gasket went through it. In removing the valve it was very difficult due to the tape holding the gasket in. I also use the Schwalbe One Tubeless tire. It was very difficult to mount on the Giant wheels, but not the Stan's.
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Old 06-22-14, 09:42 AM
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Originally Posted by marcpotash View Post
My Stan's Alpha 340's came with the tubeless valve gasket sitting on TOP of the Stan's rim tape. The hole in the tape is meant to be small, just enough for the metal valve to go through, not the gasket. Prior to this I had my LBS convert my tubeless ready Giant P-SL0 wheelset to tubeless and they made the hole size in the tape so that the gasket went through it. In removing the valve it was very difficult due to the tape holding the gasket in. I also use the Schwalbe One Tubeless tire. It was very difficult to mount on the Giant wheels, but not the Stan's.
This is what I am talking about: Oversize 44mm Tubeless Road Valve Stem - Rectangular Stopper

Designed specifically for rims with extra large valve holes.
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