So I need some help

Discussion in 'Hacks' started by MGV8, Feb 24, 2013.

  1. RVDan

    RVDan Long timer

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    check your rear wheel alignment, it probably wouldn't cause head shake but it would mess with steering.
    #21
  2. hahnda

    hahnda Been here awhile

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    I have taken wobble out of rigs by adding a couple inches to the lead but that was on rigs where the lead was already on the short side, 4 or 5 inches. You are already over 9 so you are there.

    Is the wobble only at low speeds? I assume that since you are in the testing stage you might not have had it up to speed yet? Many times rigs will have a low speed wobble but goes away above 10-15 mph.

    You said you checked your steering bearings but have you tried overtightening them so they drag a bit?

    When it comes down to it sometimes you just need to install a steering damper. I prefer to mount them from the front sidecar strut to the triple tree or a part of the fork that doesn't move up and down when the suspension cycles if possible. It is possible to mount them to the fork lower but I would try not to.

    How are you measuring your toe-in? Are your mounts nice and solid without any play?
    #22
  3. saintpeter11

    saintpeter11 saintpeter

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    RVDan suggested you check the rear wheel alignment. I concur – mine and many other of the CX650E’s had this problem.

    Remember (in years gone by) how we used to string the rear wheel to make sure the chain was properly adjusted? If not, here’s how:-


    Set the bike in the vertical position with the front wheel straight. You can’t use the center stand, it will get in the way.

    Run a string from a couple of feet ahead of the front wheel all the way around the bike – about 6 inches off the ground - to a couple of feet ahead of the front wheel on the other side.

    Pull the string snug and ensure that it just touches the sidewall at the front of rear tire.

    At this point the string should be equi – distant from the sidewall of the front tire on both sides. (the front tire is more narrow than the rear tire).

    If the rear wheel is cocked (probably to the left) you will see it right away.

    I had to put a spacer about 3/32” between the driveshaft housing and the final drive unit.

    All the best, Pete in Comox

    PS I'll be by your way 2nd or 3rd week in April, on my way to pick up another 650E in Calgary, but don't think I'll have time to stop.
    #23
  4. DavePave

    DavePave Been here awhile

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    You DO have to play with these things to get them right.

    On mine I used 15% of wheel base for my sidecar wheel lead.

    I used a binder strap from the frame through the wheel to simulate me sitting o the bike - made adjustments easier.

    Also, after you have adjusted the bike - roll it back and forth before you take another toe-in measurement, often the tires will bind on the floor and readings will be false.

    Tire pressures DO effect the adjustments. I ran mine up, which makes the bike steer easier and the adjustments were easier as well.

    I'd read all the blogs on set-up - etc..... It took me a few practice adjustments before it all made sense - then I really make some head way..... practice makes perfect.

    Mine came out good enough that I do not feel I need leading links nor a dampner.


    Good luck.
    #24
  5. FR700

    FR700 Banned

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    Heretic :lol3
    #25
  6. DavePave

    DavePave Been here awhile

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    I'l consider myself excommunicated for an hour or so.....:(:

    Off to the basement I go....:pierce
    :D
    #26
  7. FR700

    FR700 Banned

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    Hell no , come sit over here with me ... I've got beer and bacon sandwiches.

    Bought them with the money I saved by not doing steering mod's and damper :lol3
    #27
  8. diverdown

    diverdown Been here awhile

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    [​IMG] you dont need a steering dampner or a leading link frontend, what you need to do is get your set up right and ride it and learn. I have head shake up to about 20-30 kmh. no big deal does not even spill my coffee I hold in the other hand, its all about getting off the computer and learning to ride the rig.I have had the Hack on for a month now and would not trade it for anything. it is an absalute riot to ride, Thanks Jay from DMC, this Hack Rocks:freaky
    #28
  9. davet2

    davet2 Been here awhile

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    I have a Volkswagen damper on my Harley rig. Google the part number 113425021J. There are many sources for this part and they are as cheap as $20. I don't know if it would work for you but it might be worth a try.
    #29
  10. Feedback Cycle

    Feedback Cycle Been here awhile

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    IMHO. You can be stubborn (like me) and suffer through countless adjustment and dangerous test runs and MAYBE find a combination that stops the head shake. Or...

    You can be smart (like me)
    I bought a fork mounting bracket and a VW beetle dampner for $100 delivered. (eBay) Bolt to the sidcar. Few minutes and or hours.

    IT ABSOLUTELY, POSITIVELY, INSTANTLY transformed my hack
    I wrote about it here.
    http://www.advrider.com/forums/showthread.php?t=753576&page=7

    Fact is, no one else on this board had the unique bike, sidecar, tire, weight, rider, road combination I had. But My head was shaking violently and that's what dampners are for. It flat works for me.
    #30
  11. YOUNZ

    YOUNZ Been here awhile

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    I got my VW damper from JCWhittney for about 25 bucks!
    #31
  12. Feedback Cycle

    Feedback Cycle Been here awhile

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    Me too
    It was the machined aluminum fork bracket and shipping that cost the rest of the $100 :D
    #32
  13. Sidecarjohn

    Sidecarjohn Been here awhile

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    Not mentioned, or at least I don't recall in this thread, but what about the connections to the bike ?
    Positions, triangulation, and number can be factors. Whilst never claiming there's some "perfect" solution, there are factors which can be influential. Bike connection points can be significant and have seen some odd ones over the years.
    The configuration of some motorcycle frames doesn't always lend itself to ensuring a reliable fitting, so solutions have to be found.
    Not suggesting there is an issue, but maybe some consideration ?
    #33