Air leak from "tubeless-ready" rim
#1
Newbie
Thread Starter
Join Date: Jul 2019
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Air leak from "tubeless-ready" rim
I just set up a pair of "tubeless-ready" rims (the Arc 30 from Raceface) with TR tires from Maxxis, rim tape, and Slime sealant. After seating the bead, all the air leaks out of two holes that are machined into the rim. What are these holes for and what can I do to stop the leak? This url has a video of whats going on: youtube.com/watch?v=E4CcQ_SeEZw
Last edited by snowman975; 07-14-19 at 01:13 AM. Reason: specify parts
#2
Senior Member
Join Date: Jan 2013
Location: South Jersey
Posts: 2,266
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 714 Post(s)
Liked 800 Times
in
475 Posts
Check that your valve stem is tight. They need to be really tight to seal. If air is leaking into the rim cavity, it is almost always from the valve stem seal, unless you did a really bad job of taping.
#3
Senior Member
Im guessing you are referring to the small holes that are there to evacuate water from the rim. If air is escaping that way, Im betting your tape is not airtight.
Likes For Racing Dan:
#4
Expired Member
Join Date: Jun 2007
Location: TN
Posts: 11,528
Mentioned: 37 Post(s)
Tagged: 0 Thread(s)
Quoted: 3662 Post(s)
Liked 5,409 Times
in
2,748 Posts
Maybe stupid question but are you using tubeless tape of the proper width?
#5
Newbie
Thread Starter
Join Date: Jul 2019
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Ok so the consensus seems to be that its a bad tape job. Ill get some tubeless specific tape and try again (and tighten the valves more). Thanks for the replies
#6
Junior Member
Join Date: Apr 2017
Location: Almere (The Netherlands)
Posts: 15
Bikes: Pinarello F8 & F10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I just set up a pair of "tubeless-ready" rims (the Arc 30 from Raceface) with TR tires from Maxxis, rim tape, and Slime sealant. After seating the bead, all the air leaks out of two holes that are machined into the rim. What are these holes for and what can I do to stop the leak? This url has a video of whats going on: youtube.com/watch?v=E4CcQ_SeEZw
#7
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
What tape are you using now, if it isn't tubeless-specific?
#8
Newbie
Thread Starter
Join Date: Jul 2019
Posts: 3
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The old tape had been applied at a bike shop over a year ago. Yesterday I took that stuff off and applied Stan's tape, that did the trick. There was a slow leak that lasted for the first couple fills, but now it seems to have sealed and is holding pressure at 30 psi.
#9
Junior Member
Join Date: Apr 2017
Location: Almere (The Netherlands)
Posts: 15
Bikes: Pinarello F8 & F10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
30psi isn't enough for road tires, must be at least 80psi.
#11
Junior Member
Join Date: Apr 2017
Location: Almere (The Netherlands)
Posts: 15
Bikes: Pinarello F8 & F10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The Excel sheet that you showing us is simply based on the experience of users and don't have any connection with the recommandations of the manufacturer like f.e. Hutchinson or Schwalbe which you can read they recommand at least 80psi for road tires in 25 and 28 mm of the largeur.!
#12
Junior Member
Join Date: Apr 2017
Location: Almere (The Netherlands)
Posts: 15
Bikes: Pinarello F8 & F10
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The link in your post to Enve isn't to a manufacturer of tires, they have only knowledge of rims and wheels.
The real manufactures of tires you didn't link in your post, so I did it for all and you'll see the lowest pressure is 5 bar for 25 mm. Okay, you'll right it had to be 75psi.
A manufacturer that recommends that folks do not exceed 80 psi when running 25mm road tires don't know what's he's talking.
The real manufactures of tires you didn't link in your post, so I did it for all and you'll see the lowest pressure is 5 bar for 25 mm. Okay, you'll right it had to be 75psi.
A manufacturer that recommends that folks do not exceed 80 psi when running 25mm road tires don't know what's he's talking.
#14
Senior Member
Join Date: May 2014
Posts: 2,537
Bikes: yes
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 1281 Post(s)
Liked 643 Times
in
329 Posts
Road tires don't need 80 psi -- source: literally thousands of people who ride less than that.
30 psi is probably too loo for most road tires but OP has MTB rims and Maxxis tires which leads to a high probability that OP is talking about MTB tires (Maxxis makes road tires but no one uses them.) 30 psi is plenty for lots of MTB and CX applications.
Finally -- are we all going to ignore the use of Slime? Get thee some Stans or Orange Seal, post haste!
30 psi is probably too loo for most road tires but OP has MTB rims and Maxxis tires which leads to a high probability that OP is talking about MTB tires (Maxxis makes road tires but no one uses them.) 30 psi is plenty for lots of MTB and CX applications.
Finally -- are we all going to ignore the use of Slime? Get thee some Stans or Orange Seal, post haste!
Thread
Thread Starter
Forum
Replies
Last Post
GeogreHudetz
Bicycle Mechanics
12
02-14-22 11:49 AM
Aero-X
Bicycle Mechanics
3
10-09-15 06:54 PM