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21 Aug 2008
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Sealing spoke wheels for tubeless
Anyone tried making a spoked rim tubeless by gluing/sealing all around the spoke nipples inside with some cunning sealant like "Liquid Vinyl" (see link below).
What grams you add in glue you more than save in inner tube. A regular rim won't have the bead-seating inner lip of course but that's only a safety thing I think and would make mounting easier anyway. You'll loose spoke tensioning ability but how often do you do that?
I wonder if the flex of a regular spoked rim (or any other number of reasons!) make this a dumb idea. Not much to be lost trying though. IMO tubeless is the way to go - if it all goes wrong you can always bung in a tube.
And what's the difference between the same tyre in tubed and tubeless versions? Is the bead smoother/different?
Ch
tubeless wire wheels? - Kawasaki Motorcycle Forums
Last edited by Chris Scott; 18 Jan 2019 at 17:29.
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21 Aug 2008
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Yes tubeless is the way to go, butt hen you have to buy a Boxer.... :-)
Check bottom of the page: WoodysWheelWorks.com
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21 Aug 2008
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Maybe ok on the road, but if you deflate the tyres for dirt or sand riding you risk the tyre coming off the rim and instantly deflating. The hump may be important.
If you hit a pothole at speed, is there a danger of the tyre suddenly deflating?
BMW make tubeless spoked wheels and Honda did (some XL600 model).
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22 Aug 2008
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The BMW and old XLM spoked tubeless rims all avoided having the spokes go into the well of the rim to enable spoke tensioning. I dont know if Excel or someone make rims like this.
Re the hump, I remember a tubed Tenere I had in the late 80s whose Tagasako? rims for some reason had that bead-locating hump which made changing tyres a pain. I set it up on a crate without a tyre, put it in gear and ground it off.
I suppose a stiff tyre like a Desert run tubeless would stay on a humpless rim better than some, but the Tenere above suggests spoked rims did come with a hump, maybe they still do? Even then, if you visualise non-racing cornering forces on a low psi tyre in sand it does not seem too bad.
Ch
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22 Aug 2008
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Quote:
Originally Posted by Chris Scott
The BMW and old XLM spoked tubeless rims all avoided having the spokes go into the well of the rim to enable spoke tensioning. I dont know if Excel or someone make rims like this.
Re the hump, I remember a tubed Tenere I had in the late 80s whose Tagasako? rims for some reason had that bead-locating hump which made changing tyres a pain. I set it up on a crate without a tyre, put it in gear and ground it off.
I suppose a stiff tyre like a Desert run tubeless would stay on a humpless rim better than some, but the Tenere above suggests spoked rims did come with a hump, maybe they still do? Even then, if you visualise non-racing cornering forces on a low psi tyre in sand it does not seem too bad.
Ch
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I found this recently. and thought that it is a great idea but no where can i find speed or weight ratings...
Nuetech Tubliss Core
any one willing to test pilot them..
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22 Aug 2008
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Well spotted Xander, a small, chunky pushbike-sized tube to seal the tyre bead to bead, not the rim so you keep spoke tension ability.
I think I've seen similar on giant-tyred 4WDs run in Iceland for extremely low pressure (more for rim retention as they are tubeless already of course). I've also used pushbike tubes in a slightly similar way to seal and so mount tubeless 4WD tyres.
Looks like Tubliss is aimed at dirt bikes: light and relatively slow but a lot of impact flex going on - plus a van nearby. Not the same as a GS12 laden with all the Touratech fruit. Avoids the whole road-use legal issue and who can blame them, but AFAIK speed ratings are tyre related(flex + friction = heat = high wear/failure).
No friction with the red liner (or barely any compared to a full contact tube) and even less heat with Slime-like sealant, just regular tyre flex. Run a good tyre with the appropriate rating for your bike + right pressure for the load/terrain as you would normally.
I'll give them a try - all you got to do is take tubes with until you have faith in it.
Ch
Added later:
Just found this on Tubliss tire product - ADVrider
Tubliss officially is not recommending them for highway use. One reason is that they have not been tested to any standards for highway use and another reason is that if the system were to fail while riding at highway speed the tire goes flat immediately. No slow leaks, just boom and it's gone. Now having said all of that they have some customers that are using the system on the street and have had no problems as of yet. Tubliss and Brap Offroad both are selling this system for off road use only at this time. What it gets used for is out of our control.
If you have any other questions, please feel free to email me back or call me at 717-285-7873.
Thanks and have a great day.
Marty Graver
BRAP! Offroad
So, as you guys probably already know, these are for off-road, slower speed only.
I think when he says failing he means the red core bit - not a regular tyre tread puncture where a flat would occur in the normal tubeless fashion (ie: slower than tubes). If anything the red rim lock would make the deflation safer as it would hold the tyre on the rim. So as I understand it, as long as the red tube doesn't fail (it's v thick and far from the tyre tread most of the time) it's business as usual.
Last edited by Chris Scott; 22 Aug 2008 at 12:22.
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