The concept is simple:
Run 4 small bypass valves around the main 1/2†valve.
Rig a switch or multiple buttons to turn on 1 valve at a time until all 5 valves are open.
Put a ball valve inline with each one for fine adjustment.
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Made the manifolds out of 1 1/2†square aluminum bar.
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Pizza box spray booth.
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I like to fill up the first few threads with Loctite 545.
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Complete with 1/4†x .035†stainless hard lines. This is the input end.
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This is the discharge end with the ball valves.
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Next to my brand new/unused/neglected Graham White for size reference.
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This thing should be the best of both worlds. Authentic sound or instant on with 1/2†valve.
Plus no airlines or big ol’ handle to mount in the cab.
I’m working on a switch assembly and a way to test this thing.
No for 2 reasons. The tubing I.D. is only 3/16" - their combined area is less than the area of 1/2" I.D. Also, by nature the 1st ball valve might be mostly shut. It’ll be open just enough to start getting sound from a bell or two. The second ball valve will be cracked open just enough for an audible increase, etc… not high flow at all.
Must. Let. It go…
I’ll have to see what I paid Tom Aker.
I’m going to call OTRATTW in the morning and see if Carling switchs makes a momentary off/on/on. If so I’m going to go the two valve route. I know they make a on/off/on momentary,but that would be kinda hard to make it sound good.
The engine fan switch I no longer need, so I could remove that and move others over one then put two momentarys all the way to the left. I know they make a off/on/on, but I don’t think it’s momentary. I’ll call them in a bit. There’re in Cali.
I just ordered two momentarys with lazer etching. He can custom make the rocker say what ever I want. Any ideas what to put on them?
Sent while gathering Allison parts.
I’ve been thinking about doing something similar and using a microcontroller to time the opening of the valves - the end result being, you just hit a single switch up in the cab and it times the opening/closing sequence for you. Could be a fun project.