Advertise on Bikeforums.net



User Tag List

Results 1 to 5 of 5
  1. #1
    Senior Member canflyboy's Avatar
    Join Date
    Aug 2008
    Posts
    186
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Max workable clincher tire pressure -packed grass.

    I've got a small race on a relatively flat coarse with longish straights. The coarse is mostly short cut grass - then it was rolled with a 10,000 lb roller. A few wet sections, ground under the grass is firm but not hard.

    I was thinking of bumping my tire pressures up. Any suggestions? I'm typically run in the 35-40 range. I'm switching to a file tread Ritchey Speedmax for tomorrow.

    Thanks

    Canflyboy


    1970 Raleigh Sprite, 1970 Raleigh Sports, 1984 Miele Road Bike SS, 2008Cannondale F400, 2009 Opus Avro 29er, 2010 Jamis Sonik, 2009 Blue CXC, 2009 Bianchi San Jose, Cervelo SL-SLC and a wife that loves me!

  2. #2
    Senior Member
    Join Date
    Apr 2010
    Location
    Fredericton, NB, Canada
    My Bikes
    2010 S1, 2011 F75X
    Posts
    1,424
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'd keep with what's been working for you - not so much for the traction, but for soaking up the bumps - grass surfaces can have you bouncing all over the place if your pressures are too high.

  3. #3
    Senior Member
    Join Date
    Dec 2007
    Posts
    1,505
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    depending on your weight, I would go higher.
    lumpy and fast = pinch flats.
    It's a good surface to run tubulars.

  4. #4
    Senior Member
    Join Date
    Jul 2007
    Posts
    2,017
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Whatever you do, make sure to change your setup as much as possible for this race.

  5. #5
    Senior Member canflyboy's Avatar
    Join Date
    Aug 2008
    Posts
    186
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Well, that didn't work out at all. The fast, grass track was seriously compromised. Sections of the track were watered down the previous night causing very soft sections where the tires would sink into the soft earth. Mud on tires, then ride on grass had a snowball effect and the tires grew to twice their size in a couple laps. Had my clinchers set at 40 psi and felt real good for the first few laps.

    Expect the unexpected.


    1970 Raleigh Sprite, 1970 Raleigh Sports, 1984 Miele Road Bike SS, 2008Cannondale F400, 2009 Opus Avro 29er, 2010 Jamis Sonik, 2009 Blue CXC, 2009 Bianchi San Jose, Cervelo SL-SLC and a wife that loves me!

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •