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My experience with UST tyre's

688 Views 7 Replies 4 Participants Last post by CulBaire, Nov 29, 2005

bigdamo

Discussion Starter · Nov 28, 2005

My bike came with UST tubeless rims(mavic crosslands) but i have been using tube's for the past 9 months because the panaracer fire pro just last so damm long and the wheels did not come with the tubeless valves.I ride about 3x25km a week on rocky rooty single track and fire trails.I ended up getting some hutchinson spider 2.1 ust tyre's and bought a pair of mavic tubeless valves at $50.00 a set cheap eh?.Anyway i have 3 rides on these new tyres now 2 dry rides and one wet ride.These tyre's are pretty big for 2.1. They roll really good alot better than the fire pro"s i don't know if that is because of being tubeless or tyre pattern.They certainly hold on alot better in turns and seem to float over loose sand.The only down side is that in dry conditions climbing up technical hills on sandstone they spun a little where the fire pro wouldn't have and last friday arvo when i was comeing down a slight hill and around a blind corner and came accross another rider coming up and i braked to hard on the front brake and went over the bars the tyre burped but i think this was due to the fornt tyre had low pressure in it due to the valve leaking which i have sinced fixed.Strangelly the other rider said that i was the second guy that he had seen do this on the very same corner and the other rider was using UST and they burped exactly like mine did?These tyres worked well in the wet condition and rolled well in these tacky conditions.Overall i am happy with these tyres but are concerned about them burping.Anyone else use UST tyres and how do they find them.

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slaw

· #2 · Nov 29, 2005

When I got my Hollowpoint, I had the shop put on UST tyres on so I guess they put the valves in without extra charge.
I've got a Michelin Comp S Light which is a fast tyre for the rear. Not enough side grip for the front. A Michelin XLS which I use on the rear for more general use and up front I have a WTB Weirwolf, which looks like it will last well.
Never had a tyre burp and I usually run under 30psi. Had some leakage problems but found that if I used plenty of warm, soapy water when mounting that that solved the issue.
I've put some sealant in recently, but I haven't had a puncture yet in 18 months of riding.
(Hopefully they'll be ok for the Kona 24 hour this weekend).

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Low_Rider

· #3 · Nov 29, 2005

Interesting stuff guys. I've been doing some serious reading for a long time as far as clincher vs UST etc. I have decided that my race bike will get the clincher and stans treatment when I rebuild her.

It's been a tough decision, as I've found a number of tire / tube / PSI combos that work really well, and rarely flat until I start running out of tread.

The main thing that has swayed me is the extra flat protection of stans (or similar), the obvious weight savings from staying with regular rims and tires, and the fact I'm loosing weight by ditching tubes.

Also running lower pressure for extra traction appeals to me for some conditions, and the general consensus that tubeless seem to roll a little better too.

Burping is a bit of a concern for me though, as I ride in some pretty aggressive terrain. But I guess the only way to find out is to try.

I'm hoping my tire and rim choice will be a good mix and stop it from occurring!

Dave.

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CulBaire

· #4 · Nov 29, 2005

UST is definatly a great thing for trail / dual duty type bikes. It cust down on roling resistance by not using a tube, and you can run lower pressures which grip much better. I'd say the faster roling is a combination of both Less roling weight as Panaracers are quiet heavy, and tread patern. Sounds liek your onto a good thing.

If you want to save even more weight- but not loose reliability try using normal kevlar beaded tyres, with NO tubes and some sealent. I have been using assorted Kenda DTC tyres, along with Hutchinson, and Maxxis tyres on my UST rims for over a year with no troubles using this method. I love my Kenda Karma DTC (Rear) and Kenda Kozmik Lite II (on the front) for racing, they grip like hell and can take a beating.

Clinchers hey Low Rider, I'm presuming you mean A'la Frishy? I have been looking at verious wheel options for my Enduro race bike- and have desided on Stans No Tubes rims, running normal tyres with sealent. Total wheelset weight will be around 1540g, which is heavy by most weightweenie standards- but then most weight weenies aren't 185lbs, and race enduro

You could easy get a light stans wheelset down around 1450 even less depending on spokes and hubs, and their prices are quiet compeitive too.

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Low_Rider

· #5 · Nov 29, 2005

Hmm, I'm getting too used to my brothers roady / track talk.

I'm was meaning normal (as in non UST) rims.

At the moment I am thinking along the lines of DT Swiss 4.1d rims on Hope XC (silver) or DT 340 hubs, strung with DT competition or similar spokes with black alloy nips.

I have run Continental Explorer Pros as a race tire in the past, but I started to train on them too and have got sick of them. They just seem to loose their “edge” too quickly, and start feeling really dull. Could be just me, but I need a change.

I’m thinking or running some Schwallable Fast Freds / Racing Ralphs or similar 2.1’s as a race tire, and maybe something from Maxis in a 2.2 or so to train on.

Don’t know. I have to get the darn thing built before I start think about tires.

Dave

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bigdamo

Discussion Starter · #6 · Nov 29, 2005

I just picked up a set of American classic 350 disc wheelset,I didn't think there would be much difference from UST and tubed rims I 'm thinking now that i could be wrong.They weight front 680g and rear 795g =1475g i weighted it myself.It cost $538.00 delivered new.My old crossland weighted 2070g.I will probally convert them to UST using maxxis TS rim strips and a scoop of stan's.I think they burped because they had probally about 20psi in them and the extreme angle jam the front brake on in a turn.The weight saving are not huge if any at all i think it is the better rolling resitance and less lickely to flat.

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CulBaire

· #7 · Nov 29, 2005

bigdamo said:
I just picked up a set of American classic 350 disc wheelset,I didn't think there would be much difference from UST and tubed rims I 'm thinking now that i could be wrong.They weight front 680g and rear 795g =1475g i weighted it myself.It cost $538.00 delivered new.My old crossland weighted 2070g.I will probally convert them to UST using maxxis TS rim strips and a scoop of stan's.I think they burped because they had probally about 20psi in them and the extreme angle jam the front brake on in a turn.The weight saving are not huge if any at all i think it is the better rolling resitance and less lickely to flat.

Not huge...

Try this for size.

Mavic Crossland: 2070g
Tubes: Generic: 250g (for the pair)
Tyres: Panaracer XC Pro 600g x 2
or
Tyres: Hutchy Spider UST: 710g x 2 (minus weight of tubes)

Total Weight:
Tubes: 3520g for wheelset, including tyres and tubes
UST: 3490g for wheelset including UST Tyres

vs

American Classic: 1475g
Stans Tubeless Kit: 110g (for the pair)
Latex: 120g (for the pair)
Tyres: Hutchinson Airlite: 500g x 2
or
Hutchinson Spider UST: 710g

Total Weight:
Tubeless with normal tyres: 2705g for the wheelset, Including normal tyres, and No-Tubes
Tubeless with UST tyres: 3065g for wheelset, including UST tyres and No-Tubes*

*Note: only 30g of latex per wheel, as UST tyres generally seal better it works ;-)

Not huge? You are saving atleast 500g to 700g over the whole wheelset using the lighter wheelset with No-Tubes, 500 to 700g of rotational weight is a massive amount of resistance lost. Not to mention the pinch flat resistance and the better grip you get from running tubeless.

Me persoanlly, I would run normal light weight tyres or Tubeless "light" tyres that Hutchinson offers, there is much more of a range when using normal light weight tyres vs UST. I would also stay away from the maxxis rim strips; there was abit of a thread on them on the Save Some Weight forum not so long ago apparently they aren't so great reliability wise and are rather heavy. Stans No-Tubes or Eclipse Tubeless Kit are better options, although more expensive.

Hope that helps some

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CulBaire

· #8 · Nov 29, 2005

Sorry Double post.

Sorry, Double posted! Damn Computer is playing up again

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