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    CLUTCH PROBLEM

    Hello,
    I am a newbie to this forum. I have a 1989 NT650 with 11,000 miles. I have owned it for a few years and about 5,000 miles. Just yesterday the clutch started slipping under full throttle above 6,000rpm. Interestingly it only happenned in 3rd gear. I am using Castrol GTX 10W40. Fresh oil change. I have a new set of Barnett plates. Should I just install them? How about the springs?
    Thanks for your help!

    #2
    Only in third? and no other gear over 6000? Huh? odd.


    If you have the Barnett you might as well throw it in there, and while your at it get a couple heavy duty springs to put in there as well.. oh and a shift kit.
    BIKES: Honda: RC31 Racebike/ NT650 Streetbike, DUCATI: None at the moment.
    Former MSF Rider Coach / Trackday Instructor/ Expert Roadracer #116
    "I'd rather ride a slow bike fast than a fast bike slow."

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      #3
      And make sure you don't use regular motor oil....I was told that regular motor oil saturates the clutch discs. Maybe it's just a sales pitch to buy "motorcycle" motor oil, but that is what I have been told. Definitely get different springs, it makes a big difference
      -NEVER LET YOUR FEARS STAND IN THE WAY OF YOUR DREAMS-
      Most of the pics I have of my Hawk/Mods: http://gallery.me.com/stevenhowell

      "Arseing about with my bikes will end in tears." -Keno04

      "Dress for the slide, not the ride" - ParcNHawk

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        #4
        i think the reg motor oil issue is the additive "moly" in the oil....causes some issues with slippage...not a prob on dry clutches of course , hence the reason ducati uses moly in the oil they use....
        Lord Squidward of FloriDUH

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          #5
          I use ordinary car 10w40 mineral oil in mine. No issues.
          '95 ShaftHawk 650P>
          Front: Bros Mk2 front wheel; Mk1 forks; MetalGear disc; NC30 caliper; cb1 yoke.
          Breathing: Hacked up and shortened ART tri-can on collector and link pipe from DemonTweeks.
          Other: RGV bars; DefT dash; modded subframe; modded rearsets; relocated ignition.

          '91 Bros 650 Mk1>
          Currently off the road.

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            #6
            http://motorcycleinfo.calsci.com/Oils1.html

            I read this and believed it, now I run rotella synthetic 5w-40 but you could probably run baby oil in a honda and never break it.

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              #7
              I would also chime in to give an oil change to something like Shell's Rotella-T. And see what happens.

              However when my clutch started slipping at full throttle from 4th to 5th I knew it was time...... um, but that was at around 42K miles! I'm also the original owner. If the Previous Owner was a limp wristed clutch dragger.... It may have been abused.
              Mark
              88 HawkGT (original owner)
              99 Concours
              02 VFR800

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