Stiff Clutch

Discussion in 'Frame Mounted Engines' started by steve2, May 28, 2007.

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  1. steve2

    steve2 Guest

    I just got my motor mounted on the bike and ready to try but the clutch is very hard to operate. Is this normal?

  2. azbill

    azbill Active Member

    it will loosen up with some use
    they are all pretty stiff at first
    make sure that the little brass piece on end of cable is tight or it will slip off (and usually disappear) from the tension
  3. Guest

    Guest Guest

    Omit the small spring that goes on the cable between the arm and the sheath. Lube the cable generously with oil, not WD40. Make sure there are no sharp bends in the cable sheath and that the cable is even with the arm where it goes through the "tower".

    You did pull the arm out and grease it and the flat that pushes the rod right?
  4. Kielohawk

    Kielohawk Guest

    I think not having any sharp turns in the cable is most important. I am using both of my springs, it works well. The large spring is just for protecting the plastic cable sleeve from melting against the engine housing.

  5. steve2

    steve2 Guest


    Thanks. I did grease the rod that disables the clutch. I may have too many curves in the cable. I am going to shorten and reroute the cable. But that is not my biggest problem now. I tried to start the engine, the motor would not start but the chain jumped jumped the rear sprocket and jammed between the sprocket and the spokes. Now the clutch will not disengage even when I manually push the clutch lever. I hope I didn't damage the engine but right now I am not optimistic.
  6. srdavo

    srdavo Active Member

  7. gone_fishin

    gone_fishin Guest

  8. steve2

    steve2 Guest

    Thanks again. As suggested, the chain was kinked on the engine gear and was easily fixed. Now I just have to find out why it wouldn't start. I had replaced the spark plug wire. I will check that first.
  9. Guest

    Guest Guest

    Check for spark first by removing the plug and clipping it into the socket, have a helper turn the rear wheel for you. If you have spark then gas on-push the tickler for 1 second, use full choke at first, then gradually decrease it as you are pedaling.

    Should fire. Keep us abreast of you progress.
  10. steve2

    steve2 Guest

    Got it running!!!
    Problem was operator error. Misadjusted carburetor and wrong choke setting.
    I readjusted the chain but it came off again when I tried to start from a stopped position. I will keep playing with adjusting the chain.
    The clutch is much much better after shortening and rerouting the cable and removing the second smaller spring.
    With a 44 tooth rear sprocket on a 26" bike, my top speed was around 15 to 20 mph (estimated). Not anywhere near 30 mph. And quite a lot of vibration at the top end. Is this normal for a new engine? I have read that after the break-in and reducing the oil mixture that it gets better.
    Lots of noise but much of it chain related.
    But bottom line is - It's fun and I can't wait to ride it again. What a rush.
  11. srdavo

    srdavo Active Member

    Pull in your clutch & walk your bike, watching your chain travel.
    you probably shouldn't try any speed records on your 1st several starts. Let all your internals get good & lubed. short rides....vary your throttle posiyion...stop and check all nuts & bolts for tightness. your engine should smooth out by your 2nd tank.
    guys.....break in talk. chime in
  12. Guest

    Guest Guest

    I'll add that the first time I fired mine up I thought it was going to blow! It ran rough as a cob.

    The first hour of run time is pretty rough, but smooths out with each half hour of run time....go to 36/1 after the first hour or so and then start sorting out the carb. You won't get an accurate carb set up until after break-in is done and you are running 40/1.

    Best to accelerate for 10 seconds, slow down gradually for 15-20 seconds- repeat several times.

    Run your bike like you are on a race track, lots of throttle movement, don't stay at one rpm for more than 10 seconds or so.

    After the first 10 minutes go ahead and run the rpm up you'll see 29.7 mph before too long.

    Also, a lot of vibration comes from a chain that is too tight, and a rear sprocket that is not centered well.