Mountain Bike Reviews Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
937 Posts
Discussion Starter · #1 ·
When I go to set these up tubeless, do I need to drill out the inner valve stem hole diameter as he shows in the videos? Or is that just for other brand rims trying to set up tubeless using Stan's?

Because using one of his valve stems, it seems the little rubber gasket at the base is sticking up fairly high, and I got a Racing Ralph to pump up fine withput sealant, but it seems the major air leakage is coming from the valve stem hole. Feels like the gasket should sit deeper in the hole, and seal up tighter.

I just assumed Stan would build his rims with the hole bigger to start, to eliminate the need for this with his rims, but I don't know.
 

·
Registered
Joined
·
83 Posts
rufus said:
When I go to set these up tubeless, do I need to drill out the inner valve stem hole diameter as he shows in the videos? Or is that just for other brand rims trying to set up tubeless using Stan's?

Because using one of his valve stems, it seems the little rubber gasket at the base is sticking up fairly high, and I got a Racing Ralph to pump up fine withput sealant, but it seems the major air leakage is coming from the valve stem hole. Feels like the gasket should sit deeper in the hole, and seal up tighter.

I just assumed Stan would build his rims with the hole bigger to start, to eliminate the need for this with his rims, but I don't know.
You would think not, but Stan is probably the right person to ask.
 

·
Registered
Joined
·
23 Posts
you do not need to drill his rims when using his valve stems. check that the valve is seated right and also tight in the rim, i find they settle after a couple of days. you also may not have the tape settled on the rim well enough or you cut too big of a hole... hope that helps but i have a set of flows and alpha 340s sealed up no problem fwiw
 

·
Registered
Joined
·
937 Posts
Discussion Starter · #4 ·
Got my sealant and some other stuff from Stans today, so took a crack at sealing up the Racing Ralph. I had done the yellow tape a few days ago, and the tire would inflate up, but would leak like crazy, as i hadn't done the soap thing, so the bead wasn't that flexible to slide over and seal in, and I couldn't get enough pressure into it to make the bead pop.

Added the sealant tonite, did the soap, and got it up to over 30 pounds PSI with just a floor pump, when I heard a rather unnerving metallic sounding pop. Was expecting a pop like a blown tube, but not the metallic pinging with it. Tire looks to be sealing up pretty well, there's just one small spot along the bead that's still leaking a small bit, but hopefully should seal up pretty good after it sits on its side a while.

Kinda surprised at how easy the whole thing was.
 

·
Registered
Joined
·
937 Posts
Discussion Starter · #5 ·
Maybe I spoke too soon. i was just bouncing the tire up and down, and the damn thing just blew off the rim. Hopefully didn't destroy either of them.

Sent sealant spewing all over the place, including me.
 

·
At Work
Joined
·
1,819 Posts
you need to keep going out and shaking the tire around to get 100% coverage of the sealant.


Sounds like you may have put too much air in there.
 

·
Registered
Joined
·
937 Posts
Discussion Starter · #7 ·
Tire sealed up great. I pumped them up to 40 pounds, minus whatever leaked out during the sealing process. The Arches say 40 pounds is the max pressure for them with that size tire.
 
1 - 7 of 7 Posts
Top