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Max 200psi Floor pump?(8 posts)

Max 200psi Floor pump?boat
May 20, 2002 9:50 PM
I am using a vittoria corsa cx tubular and the website says that its optimal pressure is 200 psi. However, my floor pump can only reach 160 psi, so I am wondering if there is any floor pump that can hit 200 psi? Where to get it? Is it advisable to reach the pressure that high?
re: Max 200psi Floor pump?Guru_at_AmClassic
May 21, 2002 5:33 AM
Silca makes a Track pump that will hit 240psi. It retails for around 60 usd. Your local bike shop can order it for you. As for the Corsa Cx tubi, I recommend running it at 160psi. I have the same tires and I run them at 160.
Hope that helps.

Guru
American Classic Design
re: Max 200psi Floor pump?boat
May 21, 2002 6:21 AM
Thank you very much. But how come I should only run it at 160? I want tires that can hit to about 180 safely. Any recommendation?
re: Max 200psi Floor pump?Guru_at_AmClassic
May 21, 2002 10:33 AM
Unless you are using them on an ultra smooth surface, with no turns, you don't need to get them that high. You want alittle lower psi for better cornering. If you are doing a low quantity corner time trial, or a triathlon with few corners, keep it at 160.

Guru
German SKS airbase pumpShad
May 21, 2002 2:05 PM
I bought an SKS pump from Performance that goes to 224 psi and is selling for $44.99 right now. It works quite well.
CX @ 200 PSI?Kerry
May 21, 2002 5:47 PM
Last I knew, the recommended max pressure ranges for these tires was 10-12 bar (145-175 psi). And 12 bar is for super smooth courses, since at that point you run the risk of your tires bouncing around as they'll be hard as a rock. Further, many pros run them at 8-9 bar. Your reduction in rolling resistance is minimal above 10 bar, so unless you're in the national championships or something, where fractions of a second are meaningful, your quest for 200 psi seems a waste of time.
CX @ 200 PSI?boat
May 21, 2002 8:30 PM
That makes sense. Thank your for your advice. Actually what kind of pressure do people usually use for racing tubulars in a normal smooth course road race?
CX @ 200 PSI?JimP
May 22, 2002 8:13 AM
The optimal pressure for the tire is dependent width of the tire and the weight it needs to carry. There used to be a chart that showed the relationship quite well. I used that for a number of years until I lost it. Basically, since I weigh 185 that puts the total weight at a little over 200 lbs which corelated to about 130 psi for a 21mm tire. I also used 150 psi for a 19mm front tire. A couple of years ago I had a conversation with an engineer for Nimble wheels who shared some research they had performed with their wheels. He indicated that there would only be 1-2% difference in rolling resistance by lowering the pressure in the 19mm front tire to 125 psi and that would reduce the vibration from the road surface. His contention was that you need to optimize the rolling resistance with comfort since the vibration caused by too high a pressure will reduce your ability to ride efficiently.