[AT] OT--foam marker for sprayers

[jtchall at nc.rr.com]

Here is a follow up along with a huge thank you for all the input you guys 
gave. I'm still working out a couple minor bugs/durability issues, but I've 
sprayed about 50 acres so far with my sprayer and homemade foam marker. In a 
nut shell here is how it works. Small 12 volt air compressor and a new 12 
volt herbicide sprayer are mounted on top of the sprayer. I put the 
compressor inside a small plastic box to protect it---drilled lots of holes 
for air flow. The air and liquid are pumped in separate lines to almost the 
end of the boom. Here each one goes through individual check valves before 
going though a Y then into a solenoid. Just past the solenoid is an 
accumulation/mixing chamber. The now air/liquid mix blows out through an 
aquarium air stone and accumulates in the large PVC adapter. There is a 
piece of screen wire to make the foam accumulate.

Got to send 2 emails due to size limit

John Hall 
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