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  • Throttle control cable

    Hi, this is my first time writting here, we are building a Patrol from scratch with my dad. We live in Spain (sorry my english is not perfect). We are at the stage of welding little plates arround the cabin for the windows, doors, panel, etc. At this moment, we are desinging a simple thottle quadrant similar to this one from Spruce: https://www.aircraftspruce.com/catal...lequadrant.php and we have been advised to use ACS tipe push pull control cables. The problem is that we do not know how this cable endings work exactly and we would like to by a cable now so we can design the throttle quadrant. Can any one tell us the length that this cable should have? We are building a Patrol with a lycoming 360. Thank you.

  • #2
    Throttle Cable-S.jpg

    Orlin I can't give you the exact cable length since I haven't done my engine install yet. But here is the ACS cable end you probably want on your throttle quadrant. The other end would be a 10-32 stud that gets connected to the throttle. The cable retainer you see pictured from ACS is also very nice and allows for a modular installation with quick removal if necessary. I am doing a carbed engine so my throttle quadrant has both throttle and carb heat levers. I made my own quadrant and by keeping it narrow I was able to put it entirely in the sidewall of the Patrol.

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    • JimParker256
      JimParker256 commented
      Editing a comment
      That quadrant looks very nice!

    • N942VT
      N942VT commented
      Editing a comment
      Nicely done

  • #3
    Another option is to use the Van's style cable that has a threaded mount section instead of the notch shown above on the ACS cable. https://shop.vansaircraft.com/cgi-bi...uct=ctq-cables
    The advantage I've found is that you can then use the Van's Throttle/Mixture Bracket on the engine side which accepts the threaded cable. https://shop.vansaircraft.com/cgi-bi...rottle-bracket
    Makes for a clean install. Your cable should be 60 - 66 inches

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    • #4
      Try these. I usually purchase a "longer than I need" wire end vernier control and use one of these on the end once it is properly routed and secured. Cut the conduit and wire to fit. AS&S #05-16001

      Comment


      • svyolo
        svyolo commented
        Editing a comment
        That is actually my favorite cable terminal, but I didn't know they existed in the aviation world. As strong as swages, but you can make them at home. I didn't see any for 1/8" cable. They were very common in the sailing market.

    • #5
      Used for solid wire. Most use size .078 wire controls for the engine.

      Comment


      • svyolo
        svyolo commented
        Editing a comment
        The ones I was thinking of were for 1X19. You inserted a cone into the center, and the threaded nut compressed the whole fitting together.

    • #6
      I've never used one of these. I believe the solid wire is inserted into the Bullet end, then a rotation of the Bullet end results in clamping force onto the solid wire end. If so, I'd like to see these manufactured with a Jam Nut so lock the clamping force onto the wire.
      Brooks Cone
      Southeast Michigan
      Patrol #303, Kit build

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      • #7
        Brooks, the way they go together and pinch the wire, they should never back off unless you have a habit of slamming the throttle arm against the stop. Even then I doubt it would loosen. As the clamping takes place there is quite a bit of resistance/tension on the barrel before it’s tight.

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        • #8
          Vans catalog also has some terminals in sizes I couldn't find in ACS. A combination of thread size and hole diameter. If found them by accident in Vans. FWF section I believe.

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          • #9
            Engine with carburetor will use 48” cable assembly. Get a unit that has male threads in on both ends ,and use female fork ends with Clevis pins to hinge at both ends

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            • #10
              Hi Orlin, welcome to the forum. I am currently in the middle of getting my home made throttle quadrant connected to my ma-2spa carb. I am using this cable form ACS https://www.aircraftspruce.com/catalog/appages/a920.php . It has 10/32 male threads on each end and extends 3 1/8 inches. I am using a fork connection on the quadrant end and a female rod end bearing on the other end to connect to the throttle arm on the carb. As for the length depending on how it is routed that is something you would have to determine for the patrol. I am building an LSA so its probably going to be a different length. the female rod end bearing is a heim he-3m. I hope this helps. I have many pics of the throttle quadrant I made in my thread on the forum. davzLSA
              Last edited by davzLSA; 03-27-2021, 10:18 PM.

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