Balanced Air Brakes from Scratch

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Revision as of 16:48, 7 October 2015 by Dnevil (talk | contribs) (→‎Equipment)
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by Daris A Nevil

Equipment

Here is a spread of Clippard parts used for the balanced air brake system.
  • Clippard parts:
    • UDR-17-1 : Stainless steel double-acting cylinder, 1 inch stroke, 1-1/16 inch bore, 5/16 inch shaft
    • CT4 : #10-32 to 1/8” ID Hose Connector, designed for Clippard's Polyurethane hose
    • T44-4 : Tee fitting, 1/8 inch ID
    • URH1-0804-BKS : Urethane tube 1/8 inch ID
    • TV-3SP : 3-Way Toggle Valve, ENP Steel Toggle, 1/8" NPT
    • MCV-2 : Check Valve, #10-32 Ports
    • 15090-1 : 1/8” NPT to #10-32 “L” Fitting

Tools and Supplies

Build Gallery

  • I started with the air tank. It is constructed using 2 inch diameter PVC pipe (schedule 40) with a pair of caps. A hole was drilled and tapped for 10-32 threads to accept a Clippard fitting. An adhesive dot was placed over the hole before painting.

    I started with the air tank. It is constructed using 2 inch diameter PVC pipe (schedule 40) with a pair of caps. A hole was drilled and tapped for 10-32 threads to accept a Clippard fitting. An adhesive dot was placed over the hole before painting.

  • PVC glue was applied to the threaded hole before inserting the Clippart CT4 1/16 hose barb fitting. Be careful with the glue. As you can see it will remove paint.

    PVC glue was applied to the threaded hole before inserting the Clippart CT4 1/16 hose barb fitting. Be careful with the glue. As you can see it will remove paint.

  • Here is a spread of Clippard parts used for the balanced air brake system.

    Here is a spread of Clippard parts used for the balanced air brake system.

  • In an effort to save money I decided to cut brakes from a ring of aluminum purchased from McMaster-Carr. The pipe has a 4 inch inside diameter and a 6 inch outside diameter.

    In an effort to save money I decided to cut brakes from a ring of aluminum purchased from McMaster-Carr. The pipe has a 4 inch inside diameter and a 6 inch outside diameter.

  • A 1/2 inch width of the aluminum pipe was parted off on the lathe. Here it has been blued and marked for cutting.

    A 1/2 inch width of the aluminum pipe was parted off on the lathe. Here it has been blued and marked for cutting.

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