Tire/Tire pressure question- Mtbr.com
Results 1 to 5 of 5
  1. #1
    mtbr member
    Reputation: Mr. 68 Hundred's Avatar
    Join Date
    Feb 2011
    Posts
    508

    Tire/Tire pressure question

    Bike is a 29'r SS HT with 140 Pike in front. Front tire is a 2.5" DHF at 19 psi. I'm happy with all of this. All tires I've used are EXO TR and are being run with Stan's and split tube ghetto method on MTX 33's.

    Problem is the rear. Super short stays and Paragon Sliders are making it impossible to fit a 2.5" DHF in the rear without a half link, which after multiple attempts on 2 different half links, I really don't want to use one. If I do, it's probably gonna cost me my balls when it breaks at an inopportune moment. I had been running the 2.5" DHF in the rear at 23-24 psi without problems.

    Since I value my balls, I've been forced to run a 2.3" DHR 2 and a 2.3" HR 2. 2-3 weeks ago I cut the DHR2 (@ 23 psi, through the tread) on a square edge rock. Today, I cut the HR 2sidewall on another square edge rock. 3-4 rides on a $60 tire sucks ass.

    I ride in Albuquerque and it's rocky here.

    So, should I:
    1)Forego the super clean look of only the sliders and just get a SS tensioner. Then set the sliders at a distance where the 2.5" DHF's will clear and take up the chain slack with the tensioner. Run 23-24 psi for b1tchin' traction (I'm leaning this direction).
    2)Continue to run the bike without a tensioner and continue with a 2.3" EXO tire. Increase pressure to prevent pinch cuts. Deal with reduced traction on loose over hardpack on steep climbs. Deal with jarring ride of a 30+psi rear tire on a HT.
    3)Another option I haven't thought of.

    Thanks y'all
    Steve
    Proponent for an Evidence Driven Life.
    Occupation: Disposable gene transfer machine
    Current HTFU status: 4/10; increasing

  2. #2
    mtbr member
    Reputation: charging_rhinos's Avatar
    Join Date
    Jul 2008
    Posts
    1,841
    Might get better answers in the singlespeed forum. Most people in this forum will tell you to, in addition to keeping the 2.5 DHFs, to get some cushion in the back end. I have no idea what these pretty slider thingies you mentioned are.

    All I can say is to decide what's most important to you: Better looks or better performance. Neither is wrong if it's what you want.
    tangaroo: What electrolytes do chicken and turkey have again?
    rck18: All of them, because they're meat.

  3. #3
    mtbr member
    Reputation: Mr. 68 Hundred's Avatar
    Join Date
    Feb 2011
    Posts
    508
    OP was too wordy.

    I realize I'm kind of in no mans land with my bike setup/situation and the DH forum wasn't ideal but I haven't seen a post in the SS form of cutting tires on pinches. It is a bigger problem in DH.

    So, put another way, those that have run 26" x 2.5" DH casing DHF's and have been cutting sidewalls by pinches/rock strikes; would you up the psi in the 2.5" or go to 2.7"?

    Thanks
    Proponent for an Evidence Driven Life.
    Occupation: Disposable gene transfer machine
    Current HTFU status: 4/10; increasing

  4. #4
    Glad to Be Alive
    Reputation: SHIVER ME TIMBERS's Avatar
    Join Date
    Jan 2004
    Posts
    42,950
    I will bite....first off...traction or not you are running too low of pressures.....you probably need better braking technique to compensate for loose terrain.....also running that pressure your tire folds over in turns exposing itself to sidewall tears (the strongest part of the tire is the tread) ....your pressure should be at least 26 in front and 30 in back and you still might be having problems (but less)

    why would you need a chain tensioner on a SS....once it is set the chain ain't bouncing

    finally, you really have to evaluate the terrain you ride and maybe get something like a 27.5 Nomad that might be better for that terrain
    the trick is ENJOYING YOUR LIFE EACH DAY, don't waste them away wishing for better days

  5. #5
    mtbr member
    Reputation: Mr. 68 Hundred's Avatar
    Join Date
    Feb 2011
    Posts
    508
    Thanks guys, I appreciate your patience. HT question in the DH forum doesn't make the most sense but its the bike I have (and it is a bad ass bike BTW).

    Even with the SS sliders, cog size and chainring size dictate the actual wheelbase you can run (~1/4" increments with half-link or ~1/2" without). My frame was built with very little extra clearance for chainring (28T is largest that'll fit) to get short stays. Without a tensioner, I generally have to move sliders to tension chain. The result is the 2.5" (true to size) tire hits the stays or I use the half link. With the tensioner, i put the wheel where i want it and tske up the extra slack that way. Hope this makes sense, I'm trying yo type on my phone.

    Canfield Balance is on horizon for the fall. I'll keep the current bike though; SS in mountains builds power and the HT builds mAd tite skilz yo.
    Proponent for an Evidence Driven Life.
    Occupation: Disposable gene transfer machine
    Current HTFU status: 4/10; increasing

Similar Threads

  1. Question on tire pressure for my GF
    By Sleevem1 in forum Women's Lounge
    Replies: 1
    Last Post: 05-18-2014, 06:32 AM
  2. tire pressure question
    By fuzygrub in forum Clydesdales/Tall Riders
    Replies: 3
    Last Post: 08-29-2013, 04:17 PM
  3. Pressure /tire type question
    By drjay9051 in forum Wheels and Tires
    Replies: 2
    Last Post: 12-14-2012, 09:09 AM
  4. Quick Question About Tire Pressure
    By DieTheVillain in forum Clydesdales/Tall Riders
    Replies: 6
    Last Post: 01-06-2012, 11:58 PM
  5. Tubeless tire pressure question
    By RBowles in forum Beginner's Corner
    Replies: 11
    Last Post: 01-19-2011, 02:10 PM

Members who have read this thread: 0

Posting Permissions

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

THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2020 VerticalScope Inc. All rights reserved.