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  1. #1
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    USE Sub Fork - Pics

    Excerpts from discussions with USE (pics courtesy of USE). Seems interesting...a more gooder Lefty?

    Q: Have you had any folks try to convert one of your AD forks for 29er use? If so, was it done successfully and/or do you offer parts for such conversion direct?

    A: We actually do make now a SUB fork specailly for 29" bikes. I'm just bolting together the web pages as part of a new web site we are making and that will go like in a week. Pics attached of this fork on a Voodoo Dambala & being raced on a Fisher
    Rig)

    Our distributor in the US has sold a couple of these forks already so you can contact James Penfold at Ibex Distribution for more details and prices:
    useinfo@aol.com 603 431 3023. We have stock of 29" SUB here in the UK now
    if you want to go for it, James could import on next order.

    The SUB has own SUBHUB but you can order with a "lefty" style axle if you like and then use any wheel/hub that fits a Cannondale Lefty. This gives you a few pimpy wheel options.

    Other info:
    SUB29er has axle to crown height of
    Static = 500mm
    Sagged - for normal rider at suggested sag = 470mm
    Fully compressed (spring/air removed) = 410mm

    There is no fork rake as the SUB is tripple clamp and the main leg is at the same angle as the steerer and thereby the head tube of the frame.

    However there is offset in two places, first the the main leg from the steerer offset in the crowns and secondly the axle from the stantion offset. The total offset then is 47mm in static mode.

    The cool thing with the SUB is that as it goes through travel, the axel travels in a near vertical path maintaining wheelbase and with minimal loss of "trail" unlike other suspension forks. This is what makes the fork so "stable" under compression or braking and then add the anti-dive feature and great torsional stiffness to that and a whole lot of fun opens up. I think that on the longer forks required for 29" the extra stiffness is particularly great when the riding gets interesting.

    Q: Is there any rider weight limit and what is the nature of the damper mech in your forks - air/air or air oil? Also, what is the travel of your 29" version?

    A: No rider weight limit. The SUB has a custom coil spring plus an air cartridge that delivers the extra string rate and the damping. If you are much over 13 stones in weight I'd suggest the heavier spring option. Your air pressure range can vary from aprox 100psi to 220psi as a range then. The air cart is made in the US by Total Air and is reliable and simple. Going into the air cart you can change the Rebound and the Compression damping but there is no external "on the fly" adjustment of these. The 29" version of the SUB has 90mm of travel at the wheel, sorry to have left off the obvious before.

    Q: Fully loaded, I'm closer to 18 stones (250#, w/ gear)...a big guy by any definition. Right now I run a Reba Race (air fork) on my Ventana El Capitan 29er FS just fine but I'm looking for other options. It is a 4" rear travel version.

    A: Sean the SUB is a super strong and super stable running fork. Take the harder spring and pump up the air close to 200psi and it will run like a dream for you I think. Let me know if I can be of further assistance. If you do not get any joy/help from James Penfold at Ibex do let me know. The fork is quite specialist so he's not been into heavily promoting it yet.
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  2. #2
    Dr Gadget is IN
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    Speaking as a Lefty converter.....

    I looked at the SUB back when I got the onelegged bug, and it had the advantage of fitting an 1 1/8" head without mods. But once I found that Lefty had TPC damping (which I already loved) that sealed the deal for me.

    I see in the Q&A that SUB uses Total Air damping - which I recall got good reviews. I like that they now offer a "Lefty" axle option - this gives you a few more options for hubs.

    Travel. USE offers 100mm and 80mm 26" travel, and 90mm 29er. Lefty does 140mm/26", and 110ish for 29er. And again, the Lefty requires DIY.

    I recall reading a UK MTB mag review on the SUB, but can't find it now. Maybe you can ask for contact info on the folks who bought SUB's????
    This isn't a "you're doing it wrong" topic.

    WSS/OSS: Open Source Sealant

  3. #3
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    Quote Originally Posted by Maxrep
    Any data on weight? Are there any reviews for that fork in the 26 inch or 29 inch form?

    I did like the new sumo post over at their site!
    First of all glad to see that USE is finally getting around to this. We had one of their forks here years back in our never ending search for 29"er for fork options back at the turn of the century, but found it lacking, although a gent in England has been enjoying his since at least 2001. We must have missed out on something essential in the setup as it was a 26" fork done over? One thing for sure is that the folks there at USE are really great people, Rory was especially helpful.

    A google search yields info on testing, here is the first on the list: http://www.justridingalong.com/biking/review_sub.php

    The Avid brake guy Walter ? or something was sporting one at Dirt Demo 4 years ago, albeit in 26" form and when I talked to him about it he claimed that the action under braking was all that and more. That is what the SUB thing is all about and sets the fork apart from the Cannondale Lefty in the travel is vertical as described above. However other parralellogram forks actually react in basically the same manner under braking.

    The cost will not be cheap to play with one for sure and it is not the lightest either at somewhere close to 1800g. Some of the comparable P fork options can be as light as 1300g for example.

    All that said I have been a fan of P forks for years now since I had my AMP conversion. I just like the way they ride better than Tele forks and someday there will be one that is going to make its mark on the industry. The biggest factor is in the complexity of the system in relation to pivots etc. necessary. Like the AMP design which was way ahead of its time, however it used weak plastic bushings that wore out fast and wimpy little dampers that spewed sometimes even faster I am being patient though and good things come to those that wait.
    A bike by any other name is still a bike.

  4. #4
    Reviewer/Tester
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    Hmmmm...

    I really like that fork. I want one.

    *...........[little wheels inside head start turning]..........*


    I wonder if it would fit on...hmmm...

    Would "She who must be obeyed" notice it if it suddenly turned up in the post?

    [*thinks deep thoughts about FoShizzle's sneaky method of "office bikes" etc..*]

    I wonder....hmmm.. [looks at Amex and Mastercard accounts..] then goes back to work thinking more deep thoughts...



    R.
    It is inevitable ...

  5. #5
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    Sorry - forgot to post linkey thingy:

    http://www.use1.com/products/sub_antidive/sub_29er.php
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  6. #6
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    What's it weigh?

  7. #7
    Recovering couch patato
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    As the fork goes through the travel, doesn't the linkage increase the amount of offset? And wouldn't that shorten trail even more than with a standard telescopic fork?

  8. #8
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    Quote Originally Posted by Cloxxki
    As the fork goes through the travel, doesn't the linkage increase the amount of offset? And wouldn't that shorten trail even more than with a standard telescopic fork?
    Not the expert here by any means but this animation, although of a P fork, shows what is going on in realtion to vertical path suspension like the SUB fork.

    A bike by any other name is still a bike.

  9. #9
    Reviewer/Tester
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    Fork Shock !

    R/R price here in AU?

    Sit down gents...this is gonna hurt.. $1900.00 !!

    R.
    It is inevitable ...

  10. #10
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    Quote Originally Posted by Rainman
    R/R price here in AU?

    Sit down gents...this is gonna hurt.. $1900.00 !!

    R.
    I tried to warn everyone that it would be a shock to their wallet. At $1400 US I doubt they will be selling many here either. Too bad as it is sure a cool unit.
    A bike by any other name is still a bike.

  11. #11
    I ride a Swarf
    Reputation: Stuart B's Avatar
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    If I build a 29er (maybe next year) I have to have one of those USE forks!

    I have seen pics of em for years and thought they were sweet.

    Its another reason to build a 29er now hehe.

    Stu
    Last edited by Stuart B; 02-06-2006 at 12:45 PM.
    What exactly is a rigid hard tail?

  12. #12
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    I sent an email to the U.S. Distributor still pricey but only $900-$1,000 U.S. depending on hub.

  13. #13
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    Quote Originally Posted by morrisond
    I sent an email to the U.S. Distributor still pricey but only $900-$1,000 U.S. depending on hub.
    Dang, that's still a ton of scratch. You could get the new WB or a Mav DUC with new pimpy front wheel for that price.
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  14. #14
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    Ouch. That is too pricey.

    I really wanted one too.

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