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Flat Tire Defender

Jm_

sled dog's bollocks
Jan 14, 2002
18,852
9,557
AK
This solves two important issues that have already been solved. 1, no more pinch flats, and 2, no more punctures. Don't worry though, it's not like they are reinventing the wheel...
 

djjohnr

Turbo Monkey
Apr 21, 2002
3,001
1,693
Northern California
If you watch the video of Gwin, he focuses on the square edge bump improvement and comments on flat protection like an afterthought. The latter is clearly not the main benefit to him.
 

Bikael Molton

goofy for life
Jun 9, 2003
4,010
1,146
El Lay
My understanding of Mousses (as they are called in the enduro/dakar moto world) is that the 3 drawbacks are: melting at high speeds (over 100 mph on pavement), VERY hard to install and weight.

The first issue would not be a problem for us, and the 2nd wouldn't either if they never require trailside maintenance. WEIGHT THOUGH.

I think most/all ISDE/Dakar/BAJA pro/amateur riders use them over tubes now?
 

jonKranked

Detective Dookie
Nov 10, 2005
85,565
24,182
media blackout
My understanding of Mousses (as they are called in the enduro/dakar moto world) is that the 3 drawbacks are: melting at high speeds (over 100 mph on pavement), VERY hard to install and weight.

The first issue would not be a problem for us, and the 2nd wouldn't either if they never require trailside maintenance. WEIGHT THOUGH.

I think most/all ISDE/Dakar/BAJA pro/amateur riders use them over tubes now?
the weight isn't much more than a DH tube. Gwin seems to think they're worth the weight penalty for the performance (and not smashing rims) and the extra security on not flatting (which will end a race run pretty quick)
 

trib

not worthy of a Rux.
Jun 22, 2009
1,456
388
Yes he did.

There are pictures of his bike after the run with the tire off, and the FTD flapping about.

Also worth noting that it was a sidewall tear, so neither procore, tubeless or the FTD would really have saved that run.
 

Flo33

Turbo Monkey
Mar 3, 2015
2,057
1,298
Styria
Yes he did.

There are pictures of his bike after the run with the tire off, and the FTD flapping about.

Also worth noting that it was a sidewall tear, so neither procore, tubeless or the FTD would really have saved that run.
I think you're talking about last year's WC run. He did not finish that one.
But he finished his run at Leogang in 2014 and that's the run @ianjenn was referring to.
 

Kanye West

220# bag of hacktastic
Aug 31, 2006
3,740
470
My understanding of Mousses (as they are called in the enduro/dakar moto world) is that the 3 drawbacks are: melting at high speeds (over 100 mph on pavement), VERY hard to install and weight.

The first issue would not be a problem for us, and the 2nd wouldn't either if they never require trailside maintenance. WEIGHT THOUGH.

I think most/all ISDE/Dakar/BAJA pro/amateur riders use them over tubes now?
To add to drawbacks - cost, prone to rotting if they sit for more than a month, doesn't simulate a very low psi unless you drill holes in it,

Not all of them use the Mousses (Meese?). UHD tubes are still common, as are the Nuetech Tubliss setup.
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,852
9,557
AK
Bam, you don't have avoid flats by cowering under your afghan anymore:



*mic drop*
 

kickstand

Turbo Monkey
Sep 18, 2009
3,441
392
Fenton, MI
My understanding of Mousses (as they are called in the enduro/dakar moto world) is that the 3 drawbacks are: melting at high speeds (over 100 mph on pavement), VERY hard to install and weight.

The first issue would not be a problem for us, and the 2nd wouldn't either if they never require trailside maintenance. WEIGHT THOUGH.

I think most/all ISDE/Dakar/BAJA pro/amateur riders use them over tubes now?
As was point out, heavy duty tubes or the tubeliss (basically moto procore) are both used.

I'll add two more drawbacks to the mooses....expensive, and they only last 6-12 months before they begin breaking down.
 

jonKranked

Detective Dookie
Nov 10, 2005
85,565
24,182
media blackout

dcamp29

Monkey
Feb 14, 2004
589
63
Colorado
I'll take ghetto and functional for $2. Also thinking about some PEX pipe bent into a circle (bead diameter) filled with great stuff or something. Going to lowes tonight.
 

trib

not worthy of a Rux.
Jun 22, 2009
1,456
388
A cut half way through the foam every inch or so should allow it to flex enough without creasing.
 

jonKranked

Detective Dookie
Nov 10, 2005
85,565
24,182
media blackout
I'll take ghetto and functional for $2. Also thinking about some PEX pipe bent into a circle (bead diameter) filled with great stuff or something. Going to lowes tonight.
Give it a shot, report back.


Although I'd venture a guess that pex is too rigid to achieve the desired results.
 

kickstand

Turbo Monkey
Sep 18, 2009
3,441
392
Fenton, MI
I've got piles of extra Pex laying around. I don't think I would want a rigid plastic pipe (yes I know it's somewhat flexible) in there, I can't see it really doing much good....

I've also got piles of that pipe insulation laying around, with the cut it has to slide around existing pipes and the hollow center, I would just think this would collapse....it's also not real firm, so I would think you'd still be at risk for whatever you are trying to avoid.
 

dcamp29

Monkey
Feb 14, 2004
589
63
Colorado
OK- got some stuff to report... The lowes foam pipe insulation seems to be closed cell and is cheap. $1.19. We also had a Huck Norris laying around- the HN is significantly stiffer, but pretty thin. I put 2 layers of the pipe insulation in my wheels for now, going to test over the next few weeks.


2Oz for 2 layers around the rim



Also came up with this- PEX pipe with foam underneath. Seems like it will cushion (the PEX is flexier than PVC and hopefully won't shatter) and keep the tire away from the sharp aluminum edges of the rim. It's very heavy though and I haven't tried mounting a tire.

14Oz for 1 wheel


$20 for everything so far
 
Last edited:

LukeD

Monkey
Sep 9, 2001
751
2
Massachusetts
OK- got some stuff to report... The lowes foam pipe insulation seems to be closed cell and is cheap. $1.19. We also had a Huck Norris laying around- the HN is significantly stiffer, but pretty thin. I put 2 layers of the pipe insulation in my wheels for now, going to test over the next few weeks.


2Oz for 2 layers around the rim



Also came up with this- PEX pipe with foam underneath. Seems like it will cushion (the PEX is flexier than PVC and hopefully won't shatter) and keep the tire away from the sharp aluminum edges of the rim. It's very heavy though and I haven't tried mounting a tire.

14Oz for 1 wheel


$20 for everything so far
Why not go to grainger? You can get thick walled pipe insulation which is closed cell and is unslit.
https://www.grainger.com/product/K-FLEX-USA-Pipe-Insulation-WP141167/_/N-r6b/Ntt-pipe+insulation?EndecaKeyword=pipe+insulation&NLSCM=5&nls_boost_words=noContent&searchBar=true&searchRedirect=pipe+insulation&sst=All&breadcrumbCatId=4904&s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/3F406_AS01?$smthumb$#nav=/product/K-FLEX-USA-Pipe-Insulation-WP141167/_/N-r6bZ1yz8htyZ1yzvj0zZ1z0nrteZ1z0fx51/Ntt-pipe+insulation?EndecaKeyword=pipe+insulation&NLSCM=5&R=1WZF3&_=1487387033106&breadcrumbCatId=4904&nls_boost_words=noContent&picUrl=%2F%2Fstatic.grainger.com%2Frp%2Fs%2Fis%2Fimage%2FGrainger%2F3F406_AS01%3F%24smthumb%24&s_pp=false&searchRedirect=pipe+insulation&sst=All
 

troy

Turbo Monkey
Dec 3, 2008
1,006
739
anyone tried this pipe insulation from HDR (home depot racing): http://www.homedepot.com/p/Everbilt-1-in-x-6-ft-Foam-Pipe-Insulation-ORP11812/204760805

I think it's closed cell. maybe cut length wise and get 2 huck norris knock-offs for $2?
You should be able to buty an EPDM seal strip like in the pic. below. Guessing by the claimed weight and possible dimensions it should have density around 100kg/m3. Epdm foams like this usually have hardness around 50 shore00. In here 20m long, 40mm dia. strip is around 100usd, but maybe You can get some shorter ones in the US.
 

slyfink

Turbo Monkey
Sep 16, 2008
9,289
5,028
Ottawa, Canada
You should be able to buty an EPDM seal strip like in the pic. below. Guessing by the claimed weight and possible dimensions it should have density around 100kg/m3. Epdm foams like this usually have hardness around 50 shore00. In here 20m long, 40mm dia. strip is around 100usd, but maybe You can get some shorter ones in the US.
My, what lovely hands you have @troy!
 

atrokz

Turbo Monkey
Mar 14, 2002
1,552
77
teedotohdot
subscribed for interest. Stopping running tubeless, but this would help with rolling and pinching/dinging rims. May go back to it seeing how this turns out for you guys.
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,852
9,557
AK
subscribed for interest. Stopping running tubeless, but this would help with rolling and pinching/dinging rims. May go back to it seeing how this turns out for you guys.
Or you could use more than 18psi?
 

atrokz

Turbo Monkey
Mar 14, 2002
1,552
77
teedotohdot
Or you could use more than 18psi?
Even at 30psi the rear tire wants to fold over under hard cornering, which made for some burps, I generally run 35psi in the rear, 30 front, using maxxis HR2's. I don't think I've ever run 18psi in my life. Even my DH bike had 28/24psi with DH tires.

If these help push the bead against the wall, it could help those of us that ran into burping issues with our tire/rim combo.