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What type of sealant do you use and why?
1. Eclipse 15%  15%  [ 3 ]
2. Stans 35%  35%  [ 7 ]
3. Home made 35%  35%  [ 7 ]
4. UST Standard [non ust tires with sealant] 5%  5%  [ 1 ]
5. UST standard [ust tires] 5%  5%  [ 1 ]
6. UST standard [ust tires with sealant] 0%  0%  [ 0 ]
7. Nagesti [non ust tires] 5%  5%  [ 1 ]
8. Nagesti [nagesti or ust tires] 0%  0%  [ 0 ]
9. Nagesti [nagesti or ust tires with sealant] 0%  0%  [ 0 ]
Total votes: 20
Author Message
 Post subject:
PostPosted: Wed Mar 03, 2004 12:43 am 
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Joined: Thu Sep 11, 2003 9:10 pm
Posts: 378
Location: Colorado
One more example. I have run my Stan's set up at 25psi one time, just to see what it felt like.

Now theoretically, I could do the same with tubes and get a higher rolling resistance measurements. But practically, this would never happen because I wouldn't make it down 10 feet of trail before I blew the tube.

So the rolling resistance advantage is moot.

 Post subject:
Posted: Wed Mar 03, 2004 12:43 am 

 Post subject:
PostPosted: Sat Mar 06, 2004 11:19 am 

Joined: Mon Mar 01, 2004 4:42 am
Posts: 19
Its not true that rolling resistance point is moot.

Think about it in terms of what makes you go faster. Low pressure + tubeless = fastest, high pressure + tubeless = second, high pressure + tubes = third.

It is true that rolling resistance drops for increase in pressure but this is tested on a smooth roller, similar to asphalt road. It would have been better to think about rolling resistance as overall resistance to rolling on a <b>fireroad</b> trail (ie including suspension properties, not separately). This way you wouldn't have this association that higher pressure = lower rolling resistance, as this association comes from tests on smooth rollers. In the end truest definition of lowest rolling resistance setting (tires, pressure, tubes etc) is the one that makes you go fastest and isn't that most important?

 Post subject:
PostPosted: Sat Mar 06, 2004 7:23 pm 
Just out of curiousity, who's tried Eclipse Tubelesstire's before?

I am a little sceptical, but they might be good for commuting.


 Post subject:
PostPosted: Mon Mar 22, 2004 12:52 pm 
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Joined: Mon Jun 02, 2003 8:17 am
Posts: 6559
Location: Drenthe, Holland
those tires are 700c only! Look at the pics they are mounted on ksyriums!


{USERNAME} wrote:
'Tape was made to wrap your GF's gifts, NOT hold a freakin tire on.'

 Post subject: Rim Strips
PostPosted: Tue Mar 23, 2004 1:20 am 
User avatar

Joined: Sat Nov 30, 2002 4:49 am
Posts: 1903
As for sealing the rim, we have had a couple of pairs of wheels we have been plaving with at the shop.

We have had great sucess using 20" tubes as the rim strip. A little tricky but it works.

1. Line the rim with a thin cloth tape (optional)
2. Mount first side of the tyre
3. Take 20" tube and slice the back open
4. Install 20" tube
5. Tricky part- Mount 2nd tyre side keeping tube flap inside and flat
6. Inflate to seat bead.
7. Remove valve and install sealant (optional)

Success is how far you you bounce back up after being knocked down

 Post subject:
PostPosted: Tue Apr 27, 2004 8:24 pm 

Joined: Fri Apr 23, 2004 7:36 pm
Posts: 28
Location: Atlanta, Ga.
I converted to Stan's notube a month ago. I've been fighting to go to notbues for the longest time. did numerous research (MTBR.com) and ask LBS and riders. I didn't believe the hype about tubeless being better. Well, it's been a month of riding notubes and I'll state that's it's every bit of the hype. It's awesome, but if you're going with Stan's notubes, the movie on their website does not do justice. I was fortunate that a builder showed me from the ground up, plus the in's and out's of doing Stan's notubes. The way he showed me was more detailed and reliable. Once the setup was complete, I was ready. Went on a camping trip and hit some of the hardest climbs Dupnt had to offer. I was the only one who made all the climbs. All my riding friends are great riders, but the steepness of the climb was too much. I gripped everything. Plus, skidding has been obsolete for me. The new generation strips have a removeable vavle so you can pour sealant in that way, versus removing part of the tire to add more sealant. He said add sealant about every 3-4months. This recommend from where I live, Georgia. Mess will be to a minimum. Since it's still new to me, I'll let you know the con's so far.

 Post subject:
PostPosted: Wed Apr 28, 2004 11:03 pm 

Joined: Tue Oct 22, 2002 7:49 pm
Posts: 1057
Location: The Netherlands - Europe
Let me fire up this discussion a bit!

Here's an article I read on the velonews website: http://www.velonews.com/tech/report/art ... 970.0.html

Apparently at Geax and at Intense Tires research has shown that tubeless systems with latex and regular tires are less efficient than true UST tires. Sidewalls of regular (racing) tires are designed to be supported by an inner tube. Without the inner tube, these tires transfer less force from the rider to the ground they say. Makes kind of sense to me!

True: Eclipse, Stan's have less rolling resistance, but apparently there's more to it... I am a latex solution fan myself, but this one is worth the read!

Just a thought: If this is true, a UST rear tire and Stan's/Eclipse front tire would be the way to go! (The force generated by the rider is only transferred through the rear wheel)

 Post subject:
PostPosted: Thu Apr 29, 2004 3:44 pm 

Joined: Fri Apr 23, 2004 7:36 pm
Posts: 28
Location: Atlanta, Ga.

Awesome insight on the link. Does make sense. Question now is will there be a list on what tires can be suitable for Stan's no-tubes?

Then this means, if you get a tire weighing less than 450gr, does this mean in order to prevent the "Dragster" tire effect, we should put a little more PSI in the no-tubes? Seems like other factors come into play as well, not to mention the riders weight. I think if a rider is around 150lbs, he might be able to get away with this, versus a rider who is 180lbs? or is it about the centrifical force that will cause some problems?

I guess it all depends on the rider. If they are willing to sacrifice a little to hopefully gain a lot.

I was going to put some Conti Explorer Supersonics with stan's no-tubes and the wheel builder mention it wasn't a good idea. Now I can see why. Supersonics have thin sidewalls and I can see the possibilty of a "Dragster" effect or possible sidewall blowout.

I'm a big time weight weenie, but I also know when it's time to give up the grams and work with something a little more safe and durable.

Thanks for the link. I'm sure it'll spark some interest in debate.

 Post subject:
PostPosted: Thu Apr 29, 2004 4:50 pm 

Joined: Tue Oct 22, 2002 7:49 pm
Posts: 1057
Location: The Netherlands - Europe
It kind of makes sense... you can compare the effect to a wheel with low spoke tension.
In fact: If it is true, one would suspect that smaller tires have less energy loss due to this effect. Less sidewall means less "twist"? Just like a smaller wheel being stiffer than a big wheel at the same spoke tension...

Hmm... questions, questions...

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