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Old 03-09-2012, 10:41 AM   #31
stevodadevo
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On the Tubliss system, what happens when you puncture the inner high pressure tube in the middle of nowhere? Can it be patched on the trail?
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Old 03-09-2012, 10:45 AM   #32
crashmaster
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I'll throw my 2 pesos in on this one, as if anyone really cares.

I ran a sealed rear Excel from Woody for about 40,000 miles or so. Here is what I found.

Advantages:

1. Awesome when you pick up a nail, 5 minute repair vs. a 30 minute repair. Since I rarely pinch a rear UHD tube on the 990 this saved me quite a bit of time and effort as I picked up 9 nails in a 45,000 mile Americas trip.

2. Only need to carry one light weight rear tube just in case you cut a sidewall or run over something that cuts a hole larger than a plug can fix. Even one of your front tubes will work for this purpose.

Disadvantages:

1. I had to run higher pressure off pavement and off road to mitigate rim dings, which of course results in poorer traction.

2. I sliced a sidewall on two different 150 X 18 Tubeless Scorpions in the rocks where I had to put in a tube. Either of these sidewall dings would not have leaked air had a tube been in place.

3. Reduced tire life. Even the tubeless 150 Scorpion will start to leak air once the lugs get down about 1/8 inch towards the end of its useful life. I reckon what happens is that as the lugs get smaller, the area between the lugs takes deeper hits from sharp rocks, which causes slow leaking at numerous points on the tire. I figured that I would remedy this by just using some fix a flat. The fix a flat worked well until it ate through the material that was used to seal the spoke nipples. From then on, I had to run a tube.


Now, a bit about tubeless type tires vs. tube type tires on a sealed rim.

I ran the 150 Scorpion, which is a tubless tire. I also ran the 140 Scorpion which is tube type. I could tell no difference in the 140's ability to hold air without a tube.

I also ran a tube type MT-21, MT-60, and Dunlop 908 on the tubeless rim. Each of these tires held air as well as the 150 tubeless Scorpion.

FWIW, I would never consider running a tubeless front on the 990 if you go off the pavement.

Case in point with this big hit I took in the video.





IMO, its a toss up whether to run a tubeless rear or not. But, it did save me a lot of time when I picked up a nail. I was riding about 50/50 pavement vs. dirt on this trip. If I am riding almost exclusively off-pavement, I'll take the tube every time.
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crashmaster screwed with this post 03-09-2012 at 11:41 AM
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Old 03-09-2012, 10:49 AM   #33
Steveman
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Quote:
Originally Posted by Platypus-3in1 View Post


The two things that are practical to me in the real world is the money savings and not carrying extra tubes, tire irons and patching kits.
Yep agree, assuming you ride to Magadan or somewhere else in the nowhere, would you have a tube with you? Just if the worst happened? if yes, you would have tire irons with you as well. What am try'en to say is: depends on what you have planned

Quote:
Originally Posted by Platypus-3in1 View Post
For me tubeless = No more $65.00 set of tuff tubes every time I buy a new set of tires (I pinched the last rear tube twice trying to force the Kenda Big Block on ... After remounting it more than once I gave up and took it to the dealer ... I think they charged me $60+ ... Lesson learned, no more Kenda BB's with tubes) ...
Kenda and Heidenau I know. And yes me too has pinched the darn tube once. But only once *lol*

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Originally Posted by Platypus-3in1 View Post
You are right ... all the little things I mentioned don't matter! But they do sound more positive than negative ... yes?
Sure
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Old 03-09-2012, 10:55 AM   #34
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@ Crashmaster: I like your way of seeing it

ouch big hit
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Old 03-09-2012, 11:06 AM   #35
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Originally Posted by viola-tor View Post
Another thing I learned:
I’ve seen your RR’s. That report holds weight!

You shredded a 908 and the tubeless set-up cost you about 200 miles out of a tire.

I’m good with that!
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Old 03-09-2012, 11:11 AM   #36
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Originally Posted by steveman View Post
@ crashmaster: I like your way of seeing it

ouch big hit
+1
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Old 03-09-2012, 11:21 AM   #37
crashmaster
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Quote:
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ouch big hit
At least there was a tire shop "conveniently located" just past the rocky washout. Didnt flat out though, just dinged the living hell out of the rim. I almost cleared it, but saw it too late to loft the front wheel with enough authority. This is just one small example of why you shouldn't ride half asleep on seemingly good pavement in South America, and why I will never run a tubeless front on the 990.
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crashmaster screwed with this post 03-09-2012 at 11:30 AM
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Old 03-09-2012, 11:32 AM   #38
pfdskipper
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Crashy,


Did you just say: "I'll take the tube every time" ?

But seriously, cool flashback to that great ride. Bolivia, si?
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Old 03-09-2012, 11:33 AM   #39
crashmaster
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Originally Posted by pfdskipper View Post
Did you just say: "I'll take the tube every time" ?

But seriously, cool flashback to that great ride. Bolivia, si?
Maybe I should re-phrase that. How about I'll take a tube in the tire every time. Yeah, that sounds better.

That little event was in Peru. Glad to have had the WP suspension gods looking after me on that one, since I was just droning along thinking about chicas and beer instead of paying attention.
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Old 03-09-2012, 01:21 PM   #40
viola-tor
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Quote:
Originally Posted by crashmaster View Post

That little event was in Peru. Glad to have had the WP suspension gods looking after me on that one, since I was just droning along thinking about chicas and beer instead of paying attention.
Dreaming about riding motorcycles in some exotic place while riding a motorcycle in some exotic place again? I do that sometimes too...

Oh, and love the profile notes there, Crash!

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Old 03-09-2012, 02:34 PM   #41
crashmaster
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Love that movie.
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Old 03-10-2012, 01:50 PM   #42
Alleycatdad
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Response via ebay:

Thank you for your inquiry.
The full ktm 990 adv kit prices is the same 129USD.
The rear only kit part #: R40KTM is 77USD.

Masato



FWIW...

S
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Old 03-11-2012, 05:33 AM   #43
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OK Ignorance is not bliss ... I shudder at the thought of your answers to this question .....


Would a air tight rim conversion .... With a bib inserted for back up create a super tough RTW set up? Could it be done / should it be done?
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Old 03-11-2012, 03:30 PM   #44
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Flat proof tires?

http://www.youtube.com/watch?v=GScWPb8qcng

Has anyone tried this product?
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Old 03-11-2012, 04:55 PM   #45
viola-tor
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Quote:
Originally Posted by Platypus-3in1 View Post


Would a air tight rim conversion .... With a bib inserted for back up create a super tough RTW set up? Could it be done / should it be done?

I dunno why one would, as the whole idea of the mousses (meese? ) is that you don't NEED air at all. You could pick up nails, thorns, silverware, or whatever and just keep riding. And if one tried to have a bubble of air around the mousse as you suggest, a sort of fail-safe? Hmmmm, dunno, might create chaffing, maybe strange wandering balance issues...

I've never used mousse before, but from what I've read they might not work too well for the big bikes as they simulate <20 lbs of pressure, and we really need 30 psi to protect our rims. I seem to recall concerns over heat buildup on long highway sections, but don't quote me on that, just remember reading about it somewhere.
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