Balanced Air Brakes from Scratch: Difference between revisions
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File:FreightTruckAirBrakes1.jpg|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. | File:FreightTruckAirBrakes1.jpg|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. | ||
File:FreightTruckAirbrakes2.jpg|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. | File:FreightTruckAirbrakes2.jpg|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. | ||
File:FreightTruckAirBrakes4.jpg|In an effort to save money I decided to cut brakes from a ring of aluminum purchased from [http://www.mcmaster.com McMaster-Carr]. The pipe has a 4 inch inside diameter and a 6 inch outside diameter. | File:FreightTruckAirBrakes4.jpg|In an effort to save money I decided to cut brakes from a ring of aluminum purchased from [http://www.mcmaster.com McMaster-Carr]. The pipe has a 4 inch inside diameter and a 6 inch outside diameter. | ||
File:FreightTruckAirBrakes5.jpg|A 1/2 inch width of the aluminum pipe was parted off on the lathe. Here it has been [https://en.wikipedia.org/wiki/Marking_blue blued] and marked for cutting. | File:FreightTruckAirBrakes5.jpg|A 1/2 inch width of the aluminum pipe was parted off on the lathe. Here it has been [https://en.wikipedia.org/wiki/Marking_blue blued] and marked for cutting. | ||
</gallery> | </gallery> | ||
Revision as of 16:48, 7 October 2015
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.
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.
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.
