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I've noticed the alignment of the throttle cable as it exists the end of the cable shield rubs on the shield as I approach idle position.  At full throttle, the cable just kisses the shield on the other side.  This is happening where the cable mounts to the throttle body.  This doesn't seem proper and it seems there should be a fair lead or something in place to prevent.  Or, do I have my attachment all wrong?  Are others experiencing this?  I've attached two photos to illustrate.

The first photo (WOT.jpg) is when the throttle is wide open and the cable just barely touches the shield.  The second photo is near idle (near_idle.jpg) and you can kind of see how the cable is actually bending downward and rubbing heavily on bottom of shielding.

Thanks.

Tim

8428_1_WOT.jpg (You do not have access to download this file.)
8428_1_Near_Idle.jpg (You do not have access to download this file.)
  • Re: Throttle Cable Alignment - Rubbing at Idle

    by » 11 months ago


    Many are just like this especially with thicker cables. It is caused usually by the cable tension applied as you pull back on the throttle. When you advance the throttle the cable and parts relax a bit. You can tweak the cable mount or throttle arm just enough to help keep it more centered, but may not go completely away. Touching  isn't necessarily bad. You can also apply a tad of lube there too.


    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


  • Re: Throttle Cable Alignment - Rubbing at Idle

    by » 11 months ago


    Thanks, Roger.  I was thinking of 'tweaking' the bracket just a tad and will also apply a dab of lithium grease there as well.  And yes, the rubbing is at it's worst when pulling the throttle back and at full cable tension rather than when manually working the throttle arm from the engine side.

    Thanks again.

    Tim


  • Re: Throttle Cable Alignment - Rubbing at Idle

    by » 11 months ago


    The cable move linearly and the throttle rotates so it will never be centered.
    You could try applying a piece of Teflon Heat Shrink Tubing over the cable to prevent metal to metal contact.


    Bill Hertzel
    Rotax 912is
    North Ridgeville, OH, USA
    Bill.Hertzel@Yahoo.com
    Clicking the "Thank You" is Always Appreciated.


  • Re: Throttle Cable Alignment - Rubbing at Idle

    by » 11 months ago


    Yeah I get that and of course the cable rubs along the entire length of the shield anyway but it is much more pronounced at the aformentioned location.  Teflon heat shrink is a good idea and would likely completely remove the rough drag feeling at the throttle handle knob.  I'll try a little grease first and maybe your idea if I'm not totally happy with the results.

    Thanks.

    Tim


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