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Basic Q

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Mountain Bikes
Published
28 August 2007
Last activity
29 August 2007
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coyoteboy
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  1. OK, so ive been MTBing for a long time and thought I knew the reasons
    and solutions for this but as I dont I'm returning here to see if anyone
    has anything to say that might spring a new thought in my head...

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything
    from mudmad DHs to unknown copies of copies. I find I keep wiping out
    the front end, even on what seems to me to be tame terrain. I've come
    from a bike with 5 inches of boing either end and was used to nailing it
    over just about anything without trouble, but I found i couldnt ride it
    UP anything lol. So now im a little perplexed - Ive tried numerous tyres
    and the mudmad DH's were the best for grip in most situations, but a tad
    on the heavy side. I find that if i run lightweight tyres at lowish
    pressures I get lots of sidewall flop and it feels squirrelly and
    orrible, if I run them at high pressures I might as well be on ice. Ive
    tried shifting my weight forwards and rearwards in corners, though I
    naturally tend to go rearwards as the old boinger nailed corners like it
    was on rails no matter what.

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

  2. GeeDubb said:

    "coyoteboy" <[email hidden]> wrote in message

    news:[email hidden]...

    Quoted message said:

    OK, so ive been MTBing for a long time and thought I knew the reasons and
    solutions for this but as I dont I'm returning here to see if anyone has
    anything to say that might spring a new thought in my head...

    Quoted message said:

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything from
    mudmad DHs to unknown copies of copies. I find I keep wiping out the front
    end, even on what seems to me to be tame terrain. I've come from a bike
    with 5 inches of boing either end and was used to nailing it over just
    about anything without trouble, but I found i couldnt ride it UP anything
    lol. So now im a little perplexed - Ive tried numerous tyres and the
    mudmad DH's were the best for grip in most situations, but a tad on the
    heavy side. I find that if i run lightweight tyres at lowish pressures I
    get lots of sidewall flop and it feels squirrelly and orrible, if I run
    them at high pressures I might as well be on ice. Ive tried shifting my
    weight forwards and rearwards in corners, though I naturally tend to go
    rearwards as the old boinger nailed corners like it was on rails no matter
    what.

    Quoted message said:

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    2.5 continental diesel, though heavy (stupid me bought the wire bead), it
    doesn't wash out.
    Gary- Hide quoted text -

    - Show quoted text -

    Yeah, the 2.3 mudmads are good for not washing out, but i find them
    similar to accelerating a tank with a 50cc engine - they make the bike
    feel unresponsive. I know its a trade-off but i was wondering if i was
    doing something more fundamentally wrong technique wise or bike setup-
    wise maybe?

  3. "coyoteboy" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    OK, so ive been MTBing for a long time and thought I knew the reasons and
    solutions for this but as I dont I'm returning here to see if anyone has
    anything to say that might spring a new thought in my head...

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything from
    mudmad DHs to unknown copies of copies. I find I keep wiping out the front
    end, even on what seems to me to be tame terrain. I've come from a bike
    with 5 inches of boing either end and was used to nailing it over just
    about anything without trouble, but I found i couldnt ride it UP anything
    lol. So now im a little perplexed - Ive tried numerous tyres and the
    mudmad DH's were the best for grip in most situations, but a tad on the
    heavy side. I find that if i run lightweight tyres at lowish pressures I
    get lots of sidewall flop and it feels squirrelly and orrible, if I run
    them at high pressures I might as well be on ice. Ive tried shifting my
    weight forwards and rearwards in corners, though I naturally tend to go
    rearwards as the old boinger nailed corners like it was on rails no matter
    what.

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    2.5 continental diesel, though heavy (stupid me bought the wire bead), it
    doesn't wash out.
    Gary

  4. coyoteboy said:

    OK, so ive been MTBing for a long time and thought I knew the reasons
    and solutions for this but as I dont I'm returning here to see if anyone
    has anything to say that might spring a new thought in my head...

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything
    from mudmad DHs to unknown copies of copies. I find I keep wiping out
    the front end, even on what seems to me to be tame terrain. I've come
    from a bike with 5 inches of boing either end and was used to nailing it
    over just about anything without trouble, but I found i couldnt ride it
    UP anything lol. So now im a little perplexed - Ive tried numerous tyres
    and the mudmad DH's were the best for grip in most situations, but a tad
    on the heavy side. I find that if i run lightweight tyres at lowish
    pressures I get lots of sidewall flop and it feels squirrelly and
    orrible, if I run them at high pressures I might as well be on ice. Ive
    tried shifting my weight forwards and rearwards in corners, though I
    naturally tend to go rearwards as the old boinger nailed corners like it
    was on rails no matter what.

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    Have you messed with damping and spring rates in your fork? If
    compression is too fast (too low spring rate and/or too little
    compression damping) the front end won't stay hooked up. Too rigid will
    launch you off the smallest bumps too. Complicated but worth messing with.

    Shawn

  5. shawn said:
    coyoteboy said:

    OK, so ive been MTBing for a long time and thought I knew the reasons
    and solutions for this but as I dont I'm returning here to see if anyone
    has anything to say that might spring a new thought in my head...

    Quoted message said:

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything
    from mudmad DHs to unknown copies of copies. I find I keep wiping out
    the front end, even on what seems to me to be tame terrain. I've come
    from a bike with 5 inches of boing either end and was used to nailing it
    over just about anything without trouble, but I found i couldnt ride it
    UP anything lol. So now im a little perplexed - Ive tried numerous tyres
    and the mudmad DH's were the best for grip in most situations, but a tad
    on the heavy side. I find that if i run lightweight tyres at lowish
    pressures I get lots of sidewall flop and it feels squirrelly and
    orrible, if I run them at high pressures I might as well be on ice. Ive
    tried shifting my weight forwards and rearwards in corners, though I
    naturally tend to go rearwards as the old boinger nailed corners like it
    was on rails no matter what.

    Quoted message said:

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    Have you messed with damping and spring rates in your fork? If
    compression is too fast (too low spring rate and/or too little
    compression damping) the front end won't stay hooked up. Too rigid will
    launch you off the smallest bumps too. Complicated but worth messing with.

    Shawn

    I'm not sure im going fast enough in the majority of cases when this
    occurs, certainly will do a stripdown and rebuild again and have a go
    at setting it up properly again. I havent altered the fork since i had
    it on the long-travel setup and it was just fine then, the conversion
    to 100mm was done on the old frame and didnt seem to alter handling.

  6. In message <[email hidden]>, coyoteboy
    <[email hidden]> writes

    Quoted message said:

    OK, so ive been MTBing for a long time and thought I knew the reasons
    and solutions for this but as I dont I'm returning here to see if
    anyone has anything to say that might spring a new thought in my head...

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything
    from mudmad DHs to unknown copies of copies. I find I keep wiping out
    the front end, even on what seems to me to be tame terrain. I've come
    from a bike with 5 inches of boing either end and was used to nailing
    it over just about anything without trouble, but I found i couldnt ride
    it UP anything lol. So now im a little perplexed - Ive tried numerous
    tyres and the mudmad DH's were the best for grip in most situations,
    but a tad on the heavy side. I find that if i run lightweight tyres at
    lowish pressures I get lots of sidewall flop and it feels squirrelly
    and orrible, if I run them at high pressures I might as well be on ice.
    Ive tried shifting my weight forwards and rearwards in corners, though
    I naturally tend to go rearwards as the old boinger nailed corners like
    it was on rails no matter what.

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    Get a longer stem.
    --
    Devs
    "Punchdown Pete the old Kroner"

  7. GeeDubb said:

    "coyoteboy" <[email hidden]> wrote in message

    news:[email hidden]...

    Quoted message said:

    OK, so ive been MTBing for a long time and thought I knew the reasons and
    solutions for this but as I dont I'm returning here to see if anyone has
    anything to say that might spring a new thought in my head...

    Quoted message said:

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything from
    mudmad DHs to unknown copies of copies. I find I keep wiping out the front
    end, even on what seems to me to be tame terrain. I've come from a bike
    with 5 inches of boing either end and was used to nailing it over just
    about anything without trouble, but I found i couldnt ride it UP anything
    lol. So now im a little perplexed - Ive tried numerous tyres and the
    mudmad DH's were the best for grip in most situations, but a tad on the
    heavy side. I find that if i run lightweight tyres at lowish pressures I
    get lots of sidewall flop and it feels squirrelly and orrible, if I run
    them at high pressures I might as well be on ice. Ive tried shifting my
    weight forwards and rearwards in corners, though I naturally tend to go
    rearwards as the old boinger nailed corners like it was on rails no matter
    what.

    Quoted message said:

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    2.5 continental diesel, though heavy (stupid me bought the wire bead), it
    doesn't wash out.

    I don't find the Diesel wire bead heavy at all for a 2.5. They are a
    touch too much tire for my Z100 because of my weight, but still a
    great tire.

    JD

  8. Devs said:

    In message <[email hidden]>, coyoteboy
    <[email hidden]> writes

    Quoted message said:

    OK, so ive been MTBing for a long time and thought I knew the reasons
    and solutions for this but as I dont I'm returning here to see if
    anyone has anything to say that might spring a new thought in my head...

    Quoted message said:

    Giant NRS ('04) with Z1 (100mm) coil oil. Running an oldschool ritchey
    megabite up front and a tioga factory DH rear but have run everything
    from mudmad DHs to unknown copies of copies. I find I keep wiping out
    the front end, even on what seems to me to be tame terrain. I've come
    from a bike with 5 inches of boing either end and was used to nailing
    it over just about anything without trouble, but I found i couldnt ride
    it UP anything lol. So now im a little perplexed - Ive tried numerous
    tyres and the mudmad DH's were the best for grip in most situations,
    but a tad on the heavy side. I find that if i run lightweight tyres at
    lowish pressures I get lots of sidewall flop and it feels squirrelly
    and orrible, if I run them at high pressures I might as well be on ice.
    Ive tried shifting my weight forwards and rearwards in corners, though
    I naturally tend to go rearwards as the old boinger nailed corners like
    it was on rails no matter what.

    Quoted message said:

    Any tips on keeping the front from washing out at high speeds and on
    sharpish corners? Is my front fork still too much boing at 100mm for a
    2004 NRS? The head angle seems a little shallow for a meanie XC machiney.

    Get a longer stem.
    --
    Devs
    "Punchdown Pete the old Kroner"

    Funny you should say that - i do actually have a shorter stem on than
    i used to have and have noticed a wheelie-ing problem up hills too.

  9. Frame is too big.

  10. "CowPunk" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    Frame is too big.

    Frame is too small.

    Greg
    --
    Ticketmaster sucks, but everyone knows that:
    http://ticketmastersucks.org

    Dethink to survive - Mclusky

  11. G.T. said:


    "CowPunk" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    Frame is too big.

    Frame is too small.

    Greg

    Frame has no sag. How could it handle well?
    --
    Slack

  12. G.T. said:

    "CowPunk" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Quoted message said:

    Frame is too big.

    Quoted message said:

    Frame is too small.

    Frame is /just right/.

  13. Bill Sornson said:
    G.T. said:

    "CowPunk" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Quoted message said:

    Frame is too big.

    Quoted message said:

    Frame is too small.

    Frame is /just right/.

    Frame is just not right.

    Greg

    --
    Ticketmaster and Ticketweb suck, but everyone knows that:
    http://www.ticketmastersucks.org

    Dethink to survive - Mclusky

  14. G.T. said:
    Bill Sornson said:
    G.T. said:

    "CowPunk" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:
    Quoted message said:

    > Frame is too big.

    Quoted message said:
    Quoted message said:

    Frame is too small.

    Quoted message said:

    Frame is /just right/.

    Frame is just not right.

    Greg

    --
    Ticketmaster and Ticketweb suck, but everyone knows that:http://www.ticketmastersucks.org

    Dethink to survive - Mclusky

    PMSL 🙂 Frame is a 17.5 (medium) with a 6'1 rider - frame is more
    likely to be on the small side but is no different in size to the rest
    of my previous bikes. Frame has no sag, yet handles wonderfully - i
    prefer the hardtail-esque sprintyness that you just dont get with sag,
    yet other frames dont feel right with no sag lol. In fact i was
    originally thinking about going back to a hardtail but the NRS came up
    and i thought I'd take a chance - works nicely at the rear!

  15. G.T. said:
    Bill Sornson said:
    G.T. said:

    "CowPunk" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    > Frame is too big.

    Quoted message said:

    Frame is too small.

    Frame is /just right/.

    Frame is just not right.

    Greg


    Rider wrong size

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