All Discussions Tagged 'pressure' - Cyclocross Magazine2024-03-28T18:46:55Zhttps://cowbell.cxmagazine.com/forum/topic/listForTag?tag=pressure&feed=yes&xn_auth=noTubeless questions and revelationstag:cowbell.cxmagazine.com,2011-10-28:1198434:Topic:1156472011-10-28T20:08:57.859ZJ.D. Kimplehttps://cowbell.cxmagazine.com/profile/JDKimple423
<p>First, thanks to CX magazine for giving me the idea & tools to run tubeless. Short answer - it works.</p>
<p>Revelations: While I got my tires to seal up OK, and they held pretty good, in the las couple races I was burping the rear tire. Part may be the pressure (29-28 psi in the rear and clock 180 lbs). But a good part may be I needed to build up the rim's channel a bit more. Just for grins I got some Vittoria rim strips and put those on top of the tape I was using. Then the Stan's rim…</p>
<p>First, thanks to CX magazine for giving me the idea & tools to run tubeless. Short answer - it works.</p>
<p>Revelations: While I got my tires to seal up OK, and they held pretty good, in the las couple races I was burping the rear tire. Part may be the pressure (29-28 psi in the rear and clock 180 lbs). But a good part may be I needed to build up the rim's channel a bit more. Just for grins I got some Vittoria rim strips and put those on top of the tape I was using. Then the Stan's rim strip. Holy cow, it sealed up well enough with no sealant I could have ridden it like that.</p>
<p>Next: I love riding tubeless. No flats from thorns. And I can run pressures low enough that off-cambers at speed are much less of an issue. Grip in the sloppy, greasy mud-on-top-of-wet-grass. I'm hooked.</p>
<p>QUESTION: It says in the instructions that the sealant will dry up in 2 - 6 months. So how do I stay ahea do of the curve here? Do I just add more? Do I pop the tire off the rim and dump out the old sealant?</p> Tube-tied pressure in Clement Crusade PDX for 200lb-er?tag:cowbell.cxmagazine.com,2011-09-24:1198434:Topic:1097472011-09-24T11:56:42.239ZJeffrey Davishttps://cowbell.cxmagazine.com/profile/JeffreyDavis
I just got in some Clement Crusade PDX's and I'm trying to decide where to start testing the tire pressure at. The min pressure on the tire is 45, but i know lots of yall run tube-tied way lower than that. I'm about 200lbs and and like to bunny hop. I'm running them on alex dc19 rims which are 17mm wide, if that is a factor in what pressure i might could run (and if it's not, i'm a cx noob, so deal with it. ;-) )
I just got in some Clement Crusade PDX's and I'm trying to decide where to start testing the tire pressure at. The min pressure on the tire is 45, but i know lots of yall run tube-tied way lower than that. I'm about 200lbs and and like to bunny hop. I'm running them on alex dc19 rims which are 17mm wide, if that is a factor in what pressure i might could run (and if it's not, i'm a cx noob, so deal with it. ;-) ) What's the ideal clincher rim width ?tag:cowbell.cxmagazine.com,2010-02-21:1198434:Topic:516242010-02-21T02:58:44.575ZMark Angeloshttps://cowbell.cxmagazine.com/profile/MarkAngelos
<p class="MsoNormal">During my first season of CX racing I used 622x17mm Alex Ace 19 clincher rims with Specialized Hoffalize 32mm tires.</p>
<br />
<p class="MsoNormal">I’ve seen recommendations for what tire widths to run on what size rims:</p>
<p class="MsoNormal">622x15mm rims take 23 to 32mm tires,</p>
<br />
<p class="MsoNormal">622X17mm rims take 25 to 37mm tires,</p>
<br />
<p class="MsoNormal">622x19mm rims take 28 to 44mm tires.</p>
<br />
<p class="MsoNormal">And I’ve heard that wider rims reduce pinch…</p>
<p class="MsoNormal">During my first season of CX racing I used 622x17mm Alex Ace 19 clincher rims with Specialized Hoffalize 32mm tires.</p>
<br />
<p class="MsoNormal">I’ve seen recommendations for what tire widths to run on what size rims:</p>
<p class="MsoNormal">622x15mm rims take 23 to 32mm tires,</p>
<br />
<p class="MsoNormal">622X17mm rims take 25 to 37mm tires,</p>
<br />
<p class="MsoNormal">622x19mm rims take 28 to 44mm tires.</p>
<br />
<p class="MsoNormal">And I’ve heard that wider rims reduce pinch flats.</p>
<br />
<p class="MsoNormal">I’m curious about the tradeoff between rim weight (estimated at -100g for 15mm and +100g for 19mm) which affects acceleration, and tire
pressure (estimated at +5lbs for 15mm and -5lbs for 19mm) which effects rolling<br />
resistance. I assume tire choice also effect rim width selection; I’ll probably<br />
use the very supple Challenge Grifo Open 32mm next season.</p> tire questionstag:cowbell.cxmagazine.com,2009-09-08:1198434:Topic:392592009-09-08T18:24:01.296Zjeremiah blumehttps://cowbell.cxmagazine.com/profile/jeremiahblume
i am a 260 pounder and wondering if i ran wider tires would this help me with not being able to ride at low pressures. if i run lower than 40 psi i get pinch flats but, also i have problems through turns and soft terrain at anything higher. help me please. i know lose weight would help and am doing so but, want to race with out running last lap because of flat tire.
i am a 260 pounder and wondering if i ran wider tires would this help me with not being able to ride at low pressures. if i run lower than 40 psi i get pinch flats but, also i have problems through turns and soft terrain at anything higher. help me please. i know lose weight would help and am doing so but, want to race with out running last lap because of flat tire. Quick Survey...What Tire Pressure is Everyone Riding?tag:cowbell.cxmagazine.com,2008-08-28:1198434:Topic:68782008-08-28T12:33:13.682ZSuperTickhttps://cowbell.cxmagazine.com/profile/SuperTick
As for me I'm running 25-26 psi in the front and 28psi in the rear. I would love to hear what people are riding and why.
As for me I'm running 25-26 psi in the front and 28psi in the rear. I would love to hear what people are riding and why. who uses a tire pressure gauge?tag:cowbell.cxmagazine.com,2008-07-15:1198434:Topic:43212008-07-15T21:55:28.385Zandrewhttps://cowbell.cxmagazine.com/profile/cyclocross
okay, so I've got a 15 year old zefal husky floor pump and almost thirty years of racing experience. I've thought I've had reasonably calibrated fingers and can gauge tire pressure pretty well.<br />
<br />
but for $5 at a bike swap, I bought a digital tire pressure gauge made by Slime. I took it home, and tested all my wheels. Mountain bike tires - 18 psi. 'Cross clinchers - 24 psi. Road tires, 85 psi. Hmm. Seems pretty low I thought. Must be a lemon. So I ignored the gauge and continued believing my…
okay, so I've got a 15 year old zefal husky floor pump and almost thirty years of racing experience. I've thought I've had reasonably calibrated fingers and can gauge tire pressure pretty well.<br />
<br />
but for $5 at a bike swap, I bought a digital tire pressure gauge made by Slime. I took it home, and tested all my wheels. Mountain bike tires - 18 psi. 'Cross clinchers - 24 psi. Road tires, 85 psi. Hmm. Seems pretty low I thought. Must be a lemon. So I ignored the gauge and continued believing my zefal pump.<br />
<br />
Then the other day at the LBS, I decided to buy another gauge (same model) to see how far off the original (bad) gauge was. Funny thing, it's exactly the same.<br />
<br />
So now I'm stumped. Either my buddy zefal and I are way off, or slime's gauges are consistently wrong. Not that it really matters - I will ride the pressure I ride anyway, but it's interesting to compare to pressures of others, of pros, etc.<br />
<br />
So, anyone use a separate gauge? Any experience with these cheapo digital gauges? Anyone use gauges religiously, as opposed to the pinch technique?