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Old 01-09-2013, 01:39 PM   #16
Johnf3
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Quote:
Originally Posted by bigdave-gs View Post
Never saw a need for UHD tubes. If a thorn or a nail goes through the tire carcass, it's going to go through the tube. Buy two name brand standard weight tubes for the price of one UHD and put the other in your panniers.
That is my perspective too. A 4mm ultra HD tube still has no chance against a 50mm long mesquite thorn, of which there are thousands of in my area. So I run a regular tube with RideOn sealant. No other choice unless you want to fix flats all day and not ride. On a real dirt bike we all run bibs.

The UHD tubes are way too heavy also. No upside at all for my purposes.
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Old 01-09-2013, 03:16 PM   #17
Boatman
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UHD's aren't worth the downsides in my opinon for your application. If you were running a desert race of sort then okay, "might" save you that pinch flat. Heavy, you can feel the difference. Heat. And moderate mounting difficulty. The chaffing between the tube and the lining of the tire isn't only the tube taking a beating,, but also the inside of the tire. I've dismounted tires that had UHD's and the tube was fused to the tire or there was balls of rubber the size of pencil erasers inside.

Good quality Michelin or Pirelli tubes will suffice. They are thicker than the cheapo off the shelf tubes that most bike shops carry.
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Old 01-09-2013, 03:54 PM   #18
Apple Jam
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Quote:
Originally Posted by MotoTex View Post
I had a similar problem with patches failing. For me it turned out it wasn't heat, but old patches. It seems they have a shelf life of about a year, after which they won't chemically bond properly.

After losing three consecutive patches I did some research and learned that fresh patches work best and become less effective over time. I bought new patches and cement and it worked the first time and has been holding for months now.

If your patches are over a year or two past manufacture, including time in distribution, sitting on the shelf at the store, and in your repair kit, it is probably time to replace them..
I never thought of that. Seems quite obvious when you say it....
Without question the patches were many years old (6-7?) , but the glue was fresh

Quote:
Originally Posted by MotoTex View Post
Could be that riding on low air pressure leaking from a poor bond led to the heat you noticed.

Something to consider.
I've bent too many F&R rims to run low pressure anymore.
Always 30+ lbs unless I have an EXTREMELY loose & nasty hill
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Old 01-09-2013, 06:33 PM   #19
Tessier
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Are you guy's using baby powder or grease on the tube before putting it in the tire? Typically moisture get's inside the tire and the water mud and rubber all end up drying and then "gluing" them selves to the casing of the tire. By using baby powder your attempting to dry up that moisture and with grease your trying to keep the tube from sticking and keeping it moving. It I was running HD tubes I would grease them up before throwing them in.
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Old 01-09-2013, 08:21 PM   #20
crashmaster
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I've run UHD tubes for over 60,000 miles on the 990. Never an issue and I have run plenty of extended triple digit speeds on Mexican Cuotas. I use baby powder when I put the tubes in. Probably doesnt matter. The UHD tubes have saved me plenty of flats in higher speed desert riding IMO. I run 25/25 psi off pavement and off road, then 34/40 psi for extended pavement days.

I really dont see an issue with them, but that's just me, YMMV.
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Old 01-09-2013, 09:23 PM   #21
FakeName OP
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Quote:
Originally Posted by crashmaster View Post
I've run UHD tubes for over 60,000 miles on the 990. Never an issue and I have run plenty of extended triple digit speeds on Mexican Cuotas. I use baby powder when I put the tubes in. Probably doesnt matter. The UHD tubes have saved me plenty of flats in higher speed desert riding IMO. I run 25/25 psi off pavement and off road, then 34/40 psi for extended pavement days.

I really dont see an issue with them, but that's just me, YMMV.
Thanks for your post.

On what basis do you know they've saved you from flats? I have no reason to doubt, but am seeking some data.

Thanks again.
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Old 01-09-2013, 09:25 PM   #22
Newbusa
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Quote:
Originally Posted by crashmaster View Post
I've run UHD tubes for over 60,000 miles on the 990. Never an issue and I have run plenty of extended triple digit speeds on Mexican Cuotas. I use baby powder when I put the tubes in. Probably doesnt matter. The UHD tubes have saved me plenty of flats in higher speed desert riding IMO. I run 25/25 psi off pavement and off road, then 34/40 psi for extended pavement days.

I really dont see an issue with them, but that's just me, YMMV.
Me too, And have never has a flat with that combo as well.
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Old 01-09-2013, 09:58 PM   #23
DrKayak
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Quote:
Originally Posted by FakeName View Post
Do I really gain a lot of flat protection with the thicker tubes?
I run UHD on both my 450 and 950 for the last 5 years. I have never got a flat on either bike. EVER.

Never noticed the tires getting hot on either bike.
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Old 01-10-2013, 04:02 AM   #24
Rodknee
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my synopsis of this thread: first half of posts, UHD tried kill me! second half of posts, UHD are awesome!

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Old 04-10-2013, 08:09 PM   #25
mtncrawler
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What...this debate is over so soon?

.

It was just getting interesting.

So UHD's on a 650 dual sport would be out of the question/not really necessary/overkill? So far good and bad things have been noted by users on bigger DS's like the 990/950, riding pavement at higher speeds with UHD's. I'm wondering if the bike weight dictates or could influence the decision then? Not to hijack a dead thread (is that possible..hmmm.), but say I was wanting to run (OK, let's say I will be running) the Western TAT, lot's of pavement on the way home. Use UHD's, lower pressure for the trip out, jack up the pressure for the ride home, crank it up on pavement (75/80ish MPH...thats cranking for 650 DS at least for me) and forget about it?

I've heard the Michelin UHD's in particular weight in like a tire..I'll be running Michelin Desert Race tires to protect those heavy tubes.

What say ye..any other suggestions...like go start another "which oil" thread somewhere?..
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Old 04-10-2013, 11:42 PM   #26
pdxmotorhead
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OK,, now everybody who said they had no problems or a flat,, NEEDs to post now that they have taunted the tire gods the next time they have a flat on a trip,, or how many!

Dave.
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Old 04-11-2013, 09:01 AM   #27
MortimerSickle
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Quote:
Originally Posted by mtncrawler View Post
...
What say ye..any other suggestions...like go start another "which oil" thread somewhere?..
I replaced my rear tube with WD-40, er, I mean, silicone.
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Old 04-11-2013, 09:27 AM   #28
dzrtracin
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Iv'e run HD tubes since i first got my 950 ADV in 05' & again in my SE since 06' Have NEVER had an issue, or a flat (DOH) in 8 years. Like anything now days, NEVER use this for that BECAUSE etc, etc, etc.

RIDE ON!
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Old 04-11-2013, 09:50 AM   #29
knobbyjoe
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Once again we need a good scientific test... Let's see different: tubes, tires, air pressure, load, speed, temperature, rubber types, talc powder, corn starch, grease, etc. Sounds like a university engineering proposal. Now just need a sponsor.
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Old 04-11-2013, 04:27 PM   #30
MortimerSickle
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Originally Posted by knobbyjoe View Post
Once again we need a good scientific test... Let's see different: tubes, tires, air pressure, load, speed, temperature, rubber types, talc powder, corn starch, grease, etc. Sounds like a university engineering proposal. Now just need a sponsor.
http://www.grants.gov/
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