Cross tire pressure

[J.Greene]

How low do you guys go for tubs, and for clinchers. Compton's mechanic said on cyclingnews.com that if you don't hit the rim every now and then your not low enough(he'd have to be talking about tubs). what say you guys?

JG

[Kines]

I run the highest of anyone I race with that I know of. I'm 6'1" 170lbs and I like at least 50 psi. Last weekend was a dry sandy course, I ran 55-60psi and thought it was perfect (clinchers).

KN

[Too Tall]

Sunday raced in soft dirt some mud on (ick ick ick) clinchers Ritchey SpeedMax 32s at 45/50 I weigh 200...hooked up really well.

[chrisroph]

tubulars 32-36 (some go as low as 25)

clinchers 35-40

[Bruce K]

Schwalbe Racing Ralph clinchers - rider weight 215# - generally 45 front and 55 rear.

BK

[handsomerob]

I did a race on some mostly hard pack grass on Sunday at 70psi. The only loss of grip was on some gravel-ly uphill sections that I don't think less pressure would have done much to help.

How much more effort is needed to overcome the rolling resistance at 45psi or so??.... I had mine set that low for a practice lap and they felt unnecessarily spongy so I opted for higher pressure.

there was a long straight (few hundred yards) along the MS river that I know I was a good amount faster with higher pressure.

[flux]

Weighing at 150lbs, I range from 25psi on muddy, off camber and/or bumpy courses to 30-35psi on hardpack terrain especially if there are roots and rocks.

If the course is an absolutely mud laden, I will go under 25psi accordingly.

Mind you these pressures are with Griffo CX 32's with both treads facing forwards.

[e-RICHIE]

Weighing at 150lbs.
altoids + san pellegrino atmo.

[Fixed]

altoids + san pellegrino atmo. add a couple of smokes
diet of messengers
cheers

[J.Greene]

altoids + san pellegrino atmo.

I prefer the non fizzy aqua panna atmo.

JG

[shinomaster]

I weight 144 and I cant tell what psi I'm running. I'm guessing 35?

[chrisroph]

most people run too high pressure in their cross tires

[Too Tall]

I prefer the non fizzy aqua panna atmo.

JG
JG point of order...that's "No Gas Aqua Panna" ;)

Makes me giggle everytime the waiter asks.

[zank]

I weigh 155#. I run my tubulars (FMB SSC 34s) at 25 psi in the front and 28 psi in the rear. I run my clinchers (Mud 2s) at 30-35 psi. I was running the tubulars at around 30 psi to start. Night and day in the corners after I dropped a few psi. I agree with Chris that most people run their tubulars too hard.

[jthurow]

most people run too high pressure in their cross tires
Cyclingnews.com featured Katie Compton's Spike Shooter Primus Mootry (http://www.cyclingnews.com/tech/2007/probikes/?id=katie_compton_spike_shooter07) today. In the write-up, her "manager/mechanic/husband" Mark Legg seyz... "If you don't feel the rim every now and then, you're running them too high." Seems to work ok for her.

jimi

[Blue Jays]

"most people run too high pressure in their cross tires"Agree 100%. Same thing with mountainbike tires as well. Modern tires can handle the greater stress of lower pressures fine.

[Too Tall]

Echoing recent sentiment...I heart this forum. Good stuff.

[zank]

I just wish knowing what pressure to run your tubulars at = good racing tactics and sense. That would have helped me more on Sunday. :crap:

[shinomaster]

I just wish knowing what pressure to run your tubulars at = good racing tactics and sense. That would have helped me more on Sunday. :crap:

Did you fall down? Maybe you aren't ready to come to Portland?

[J.Greene]

Thanks Guys,

I've been running mine kinda low in training and just playing around. I don't get over 35lbs. I ride a paved trail about 3 miles to my training site so I wish sometimes I had more air. When I rode my mtb a lot I always told my pals they use too much air. I found out that it's hard to have any authority on these issues when everybody is faster than you. :rolleyes:

JG

[djg]

35 -40 (first choice is always tubulars) but it's not as if I'm an expert.

[dutri42590]

I prefer the non fizzy aqua panna atmo.

JG
you and your italain water!!!!!!!!! :banana:
It work for me down in stuart.
JPR

[chrisroph]

also everybody's pump is different especially the silcas. my 2 silcas are not very close.