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  1. #1
    Looking for Adventure
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    2006 Racer X psi setting for rear shock advice

    I have a new 2006 Titus Racer X med frame with the Fox F100RLT fork and Fox Float RP3 on back. I set the rear shock air pressure to that recommended by Fox at about 1/4 travel length sag. However, I found the ride to be a little too squishy for my taste, but then I had come from a 2000 Rocky Mountain Instinct with Marz front coil shock and early Fox Float air shock on the rear. I weigh 160lbs and ride pretty aggressive style X country, with plenty of eastern Canada style single-track.

    Is the Fox pressure recommendations the most efficient, or should I pump it up a little more in the rear, and the front? Currently, I have 60lbs in the rear and 70lbs in the front. Should they be the same psi?

    What ratio to rider weight and psi do you find effective?

    Thanks…

  2. #2
    information leafblower
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    small 2006 RX

    Same fork/shock as you - rider weighs 140lbs, I am currently running between 55-60 psi in the fork and 55 psi in the rear shock...

    I find the fork bobs annoyingly when cranking out of the saddle - but have no trouble with the rear bobbing - you can only see/notice this in the soft propedal setting - in the normal range under hard sprinting I used about 5mm of shock travel and a whole lot of fork travel.

    would be great to get a bit of a database of RX rider weights, shock type and shock psi...if anyone wants to PM me theirs I'd be happy to compile it...
    i've got one inch, who needs more?

    [SIZE="2"](wanted small or medium 93 or earlier race lite, must have bonded TT cable guides) [/SIZE]

  3. #3
    Loser
    Reputation: Jisch's Avatar
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    2002 RX100 (sorta)

    I have a 2002 Hammerhead 100x, with a 2004 replacement front triangle. I have a RP3 on the back and had Fox Float on the front. I'm not much for details of how things are set up, but I think I had about 95 PSI in the front and 105 or so in the back, I run the RP3 in the softest setting most of the time. I weigh about 170 with all my riding stuff on.

    I think those numbers are a bit high compared to the factory settings, but I find them good for me.

    I am always amazed at how the two ends of the bike interact. When I put too much air in the front, the rear felt more squishy and vice versa. You need to balance them out, but that's a feel thing, not a matching the PSI thing. The best thing to do is to mess around with it, one thing at a time. Try adding 10 PSI to the front and see what happens, then add to the back.

    I changed out the Fox fork for a Marz, big improvement in my opinion. The coil/oil/air combo is heavier, but its more compliant on small hits and more consistent throughout the travel.

    John
    Big Strings, Big Wheels, The Jisch Blog

  4. #4
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    05 Racer X 100

    I've got a small 05 RacerX 100, with an F100X on the front and RP3 in the rear. I'm 152lbs w/o gear, and probably 157-160lbs all geared up. I run 75 lbs in the front, and 95 lbs in the rear. I get minimal bobbing in the front, for obvious reasons since I've got the F100X. The rear is firm, and gets full travel when necessary. Hope this helps.

  5. #5
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    I have a medium RX-100 and weigh about 155; I run anywhere from 90 to 100psi in rear shock (rp3) and about 70psi in the front shock. Hope this helps.

  6. #6
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    Thanks for the info, others please keep posting

    You already saved me a few hours of trial and error. Looks like I need to increase the pressure in the rear shock, which makes sense considering the bike feels like it is slouching at the back right now.

    Great bike by the way.......glad to be part of the Titus cult. First thing I noticed about the bike is how impatient I suddenly became with fellow group riders on climbs. While they were labouring up hills, I wasn't even breaking into a hard sweat and found myself getting annoyed with them in front of me. The bike loves to climb and make it a pleasant experience!
    Last edited by Ricksom; 07-07-2006 at 01:40 PM.

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