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So I've just bought a new bike - with tubeless tyres...
Having had 2 rides so far on tubeless I'm late to the party but I want to convert my hard tail as well. I'm running Mavic EX721 rims but looking at the Stan's kits have no idea what width my rims are, not as stupid a question as it sounds as I can't find any information on where the rim width is measured from?
Also has anyone had luck converting said rims?!
There's lot of info out there if you use the (admittedly odd) search term "ghetto ex721"
eg:
http://www.ridemonkey.com/threads/anyone-running-mavic-721s-tubeless.229370/
Just get some gorilla tape and an old valve out of a tube for each rim.
Take off the rim tape, cut the gorilla to the internal width'ish, wrap round a few times until tyres of choice are a tight fit in the well. Take tyre off, screw up valve, bung sealant of choice in and inflate.
There are threeish ways to go tubeless.
1. Tape the rim to seal the valve holes, put sealant in a tyre and inflate. This works well for compatible tyres and rims but can go horribly wrong with other rim/tyre combinations. Stan's marketing would have you believe that this method "burps" air as you ride.
2. Rim strips (Stan's, Joe's) that fill the well of the rim and seal to both tyre beads, completing the circle so that the tyre plus strip makes a tube. Again, you add sealant and inflate. This can work with a wider range of tyres on rims that aren't tubeless ready.
3. Ghetto tubeless (Google it) is similar to the above but you take a rim, fit a smaller inner tube (eg 20" on a 26" rim), slit the inner tube around the rim and flap the edges over the edge of the rim. Now, when you install a tyre, its beads press against the tube on each side of the rim to complete the circle. Add sealant, inflate and trim the excess tube back to the rim edge.
Either way, any significant damage to the tread or sidewall won't be sealed by the sealant. Carrying a tube and sidewall patches is a good idea if you're likely to get stuck in the middle of nowhere.
Either way, any significant damage to the tread or sidewall won't be sealed by the sealant. Carrying a tube and sidewall patches is a good idea if you're likely to get stuck in the middle of nowhere.
Isn't that the same for any tubeless set up?
Talk to me about tubeless...
Well, it's a lot more faff to set up than tubes, there aren't really any weight savings to write home about once you factor in rim strips and sealant etc, you still have to carry spare tubes, and a sudden unexpected burp at speed can potentially throw the entire tyre off the rim sending you hurtling into the rocks and perhaps damaging your rims.
(Did for me anyway)
Good for lessening puncture mending though...
How's that?... 😀
I'm running Mavic EX721 rims but looking at the Stan's kits have no idea what width my rims are, not as stupid a question as it sounds as I can't find any information on where the rim width is measured from?
Its staring you in the face, 21mm, its measured internally.
FYI Mavic 321, 521, 721 are 21mm internally, Mavic 719, 319 are 19mm. The first number relates to the series/quality, the higher the number the further up the range they come, 2 and 3 series are at the bottom of the range whilst 5, 7 and 8 series are mid/top of the range.
Got some EX721's workin fine, hold the tyre on well.
I'm curious too. Is it a bit like sex without a condom?
I've gone back to tubes for a variety of reasons...unpredictable pressure drops, tyre compatibility, nedd to carry gunk in the van, valve holes blocking up, rim dings causing issues if you hit hard while out riding...
[quote=[b]glasgow[/b]dan said][b]nedd[/b] to carry gunk in the van
Is that the Glaswegian equivalent of a houseboy who carrys his master's things?
I rode tubes for the first time in a few years last night. It's horrible. Much prefer being able to run 25 psi without pinch flatting.
[quote=warpcow said]glasgowdan said » nedd to carry gunk in the van
Is that the Glaswegian equivalent of a houseboy who carrys his master's things?
😆
Silly question, but do you know your new bike is tubeless? Some come with tubeless rims and tyres but with a tube in as its easier to assemble and look after on the shop floor.
If you currently need to overinflate in order to reduce the frequency of getting punctures (I did) then switching to tubeless allows you to run at your ideal tyre pressure.
Silly question, but do you know your new bike is tubeless?
Because when it was being built, the mechanic asked if I wanted to be tubed or tubeless.
[i]Is it a bit like sex without a condom?[/i]
Depends on which perspective you are looking from!
The other plus to it is that once you fit them you can skip all the what tyre for this crap as you just keep riding them and find out that if you get the right ones it's all fine.
I'm curious too. Is it a bit like sex without a condom?
Yes, it feels better but could get very messy.