Notubes Crest/Iron Cross - real world experience with psi

Especially for light weight issues concerning cyclocross / touring bikes & parts.

Moderator: Moderator Team

Bhaalgorn
Posts: 25
Joined: Mon Jun 05, 2017 2:10 pm

by Bhaalgorn

thprice wrote:
Mon Apr 02, 2018 8:59 pm
Update on Grail with Maxxis Rambler EXO 120. They initially went on OK but now even if I pump to maximum pressure of 75psi they do not seat properly. Also found punctures were more frequent with them. Not going to use them again.
I'm sure you've tried this, but figure I'll ask in the odd chance you haven't... but have you sprayed soapy water all around the bead interface prior to inflating? That usually fixes the problem for me.

There's no reason a Grail and Rambler shouldn't work fine. I wish I hadn't just sold my Grails because I'd try my Ramblers hanging up.

thprice
Posts: 249
Joined: Sun Jul 17, 2011 6:34 am

by thprice

Soapy water maybe fine at home but my issue is when I am out in the dessert or back country and get a puncture.

by Weenie


AJS914
Posts: 2575
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

You carry a spare tube. Or, you use a tubeless repair kit like Dynaplug.

http://www.dynaplug.com/

Bhaalgorn
Posts: 25
Joined: Mon Jun 05, 2017 2:10 pm

by Bhaalgorn

thprice wrote:
Thu Apr 05, 2018 5:21 am
Soapy water maybe fine at home but my issue is when I am out in the dessert or back country and get a puncture.
I think that's simply a potential pitfall to tubeless tires.

This actually happened to me recently. I was out on a ride with some very loose fitting Specialized Fast Trak 2Bliss tires paired to some ENVE M50s. I ran my pressure too low and/or must have had a small puncture along the way and I rolled the tire off bead. Between my buddy and I, we had 4 CO2 canisters and couldn't get the tire seated back correctly, so it kept losing air, plus it was extremely wobbly. I ended up walking back to the car.

User avatar
jcrr
Posts: 99
Joined: Wed Nov 30, 2011 4:36 am
Location: Seattle, WA

by jcrr

Updated table page 3
"If it ain't broken, it could be lighter"

b5000
Posts: 8
Joined: Tue Sep 05, 2017 6:15 am

by b5000

(Updated Table - Added Iron Cross entry)

RIM___________ TIRE (Setup as Tubeless?)_______ PSI_________ RESULT

Iron Cross_______Vittoria xg tnt 32c (Y)______________50____Ka-Boom!
Iron Cross_______WTB Nano 40c (Y)_________________35________Good
Iron Cross_______Spez Roubaix Pro 30-32 (N)_______85-90_____Good
Iron Cross_______Spez Roubaix Pro 30-32 (Y)_______60________Good
Iron Cross_______Shwalbe Pro One 28 (Y)__________60-70_____Good
Iron Cross_______Kenda Slant Six 32 (Y)____________30-50_____Good
Iron Cross_______Kenda Small Block Eight 38 (Y)___30-50_____Good
Iron Cross_______Clement Strada LGG 28 (N)________40-70_____Good
Iron Cross_______Hutchinson Black Mamba 34c (Y)__50-60_____Ka-Boom!
Iron Cross_______Specialized Terra Tubeless 33c (1st Gen) (Y)__33-65____Good


Grail___________ Hutchinson Sector28 (*)______________???_______Good
Grail___________ Hutchinson Fusion (Y)_______________110_______Good
Grail___________ Challenge Almanzo 33 (N)___________55_______Ka-Boom!
Grail___________ Hutchinson Sector28 (Y)_____________70________Good
Grail___________ Bontrager CX3 32 (N) _______________60_________Good
Grail___________ Conti GP4000s 25 (N) ______________80-115_____Good
Grail___________ Schwalbe Pro One 23 (Y)____________100________Good
Grail___________ Mich Pro4 Endurance V2 28 (N)_____75-80______Good
Grail___________ Conti Cyclocross Speed 35 (N)______45-50______Good
Grail___________ Maxxis Rambler EXO 120TPI 40 (N)_35-75_____Bead not seating/sealing well
Grail___________ Schwalbe S-One 30 (Y)_____________50-75______Good
Grail___________ Continental Top Contact 37 (Y)________50_______Good
Grail___________ Continental Top Contact 37 (Y)________75______Ka-boom!
Grail___________ Michelin Pro4 23 (Y)__________________75+______Ka Boom
Grail___________ Panaracer Gravel King SK 43c TL______40______Good
Grail___________ Schwalbe Marathon Supreme 35 (Y)__35-45____Good
Grail___________ Schwalbe G-One 35 (Y)_________________55______Good


Crest___________ Conti GP 4S (N)____________________80-100______Good
Crest___________ ?????????? (N)_______________________90________ Good
Crest___________ Vittoria Rubino 28 (N)______________110________ Good
Crest___________ Clement Strada LGG 28 (N)__________50-80____ Good
Crest Mk3______ Schwalbe Marathon Supreme 35 (Y)_25-35_____Good

Post Reply
  • Similar Topics
    Replies
    Views
    Last post