You shouldn’t be losing air much at all unless you’re using silly tyres.
If you’re losing air from the spoke holes, then as you say, your tape or valve aren’t sealed well. If they’re decently installed then sealant should be able to just about deal with that though.
How much sealant did you put in?
I put one little Stan’s bottle in each.
When I first did tubeless (same wheels, same valves, same rim tape, just new tires now), I put one bottle in one and 2 in the other.
I wonder if it’s valve to rim leak. I have some new muc-off valves which I might switch to.
Tires are some specialized ones, not light ones. Ground control T7 soil searching maybe.
Yeah, that’s a decent chance. Especially if you’ve taken the valve out recently. Unfortunately you can’t tighten without taking everything off but that would be my first go to try and make sure you put in more sealant. It still goes down you will need to redo your tape
Racing a ~100 mile mix of fire road, some single track, and road gravel / MTB race (divisions, but they will race all together) in December. I’ll be riding my XC bike but I’m a roadie and pretty new to dirt racing of all kinds. 2 fire road climbs (35-45 min), 2 dirt descents, 2 road climbs (7-10 min each). I’m relatively strong locally so feel like I have a shot at getting up the fire road climbs close enough to latch back onto the gravel bikes on the descents, but that’s to be seen.
Currently have 2.4 Aspens on. I’m not the most technical rider by any means so the big tires are nice, but I should inherently have an advantage to close gaps on the downhills with suspension. I spin out at about 33 mph so I think I can hang on the flat road sections - I’m trying to determine what tire choice gives me the best chance of hanging on the 7-10 minute road climbs. Recs on how narrow to go and actual tire model? I do not have a depth of knowledge at all.
Pumped both up to 20psi about 3 hrs or maybe 4 hrs ago, and now both are 100% flat. Weird that I’m having the same problem and same leak rate on both (okay, one could have gone flat first, I’d didn’t check until now).
Guess I’m pulling tires and redoing valves tomorrow.
Thanks all.
You could try something like Conti Race Kings or Schwalbe Racing Ray F/Thunder Burt R. People seem to run both those options at Leadville, and seems like they could work well for what you’re describing. Depends a little on how much singletrack and how technical the singletrack is as to how much you want to sacrifice traction for rolling speed. If people are racing gravel bikes though, it’s probably not an issue.
What rims are you using?
I find slow leaks are almost always a tape issue. On new tires with tight beads it’s easy to mess up the tape when wrestling them on.
Stan’s ARCH Mk3
Agree. This sounds like a tape issue. Could possibly be solved by more sealant, but that would be my thought too.
How big is a small bottle of Stan’s?
I’ve not done the trick to put a tube in first to seat the rim tape. I might try that. Front wheel was factory taped at Stan’s, rear was done by me. Front used to (with the old tire) hold pressure fine for a few days. The rear used to hold okay for maybe 4hrs ride was okay, just a little flatter.
I’ll tackle one tomorrow and see if I can work out the right technique
Thanks.
I’m pretty sure they’re 3oz, maybe 2oz.
It could easily be that you’ve moved the tape during tyre install.
Make sure the tape is wide enough in the rear. I haven’t needed to seat tyre or tape with a tube since the very earliest days of tubeless.
Sounds like you are going to / need to open it up anyway. I’ll be interested to know how much sealant is still in there when you open them up.
Any tire recommendations for Sea Otter Fuego Xl? Doing this race for the first time next year. I’m from BC (Vancouver Island) and never ridden in that area, so any suggestions welcome. Thanks in advance for your help!
I was on rails with Racing Ray/Ralf late year at the XL.
Only change I’d make is a 2.35 f instead of 2.25 so I could be more aggressive on the down hills.
I’m eager to hear how people feel about the Maxxis Aspen MaxxSpeed’s after BRR finally got a chance to test them… I have yet to try them, but can’t really see a need now with the numbers looking way off the mark. I know a smooth roller drum test isn’t the end all be all, but 12w per tire over the Race King is hardly in the gray area. Maxxis just clearly isn’t on the same level with Conti, Schwalbe, or Vittoria in the compound department. Hurry up Conti with the 2.4" Race Kings…
2.4" RK really needs to happen.
I dare say a 2.2" Aspen rolls better on a drum than a 2.4" one.
I chickened out from trying Conti’s this season, but when the 2.4" Cross and Race King tyres are released I’ll definitely be interested in giving them a go!
You are going to get either dry sand or mud & wet sand… depends on how bad El Niño is going to be.
I ride the trails on Fort Ord regularly. For me the race best combo I have found is fast track front and renegade rear. Ground Control is my favorite but a bit heavy for racing.
Unfortunately Continental have been more concerned with bringing eBike tires to the market than updating their current XCO race tires (Cross and Race Kings).
After the bad showing for the 2.4 Aspen in MaxxSpeed (maybe should be renamed MaxxWatts??), now I’m really curious to see how the 2.4 Kendra Rush does on BRR. It’s getting close to getting enough votes to be tested. Despite get a bad side wall flat earlier this year, I may be willing to give them another go on the right course if they test well.