Here is the $7 mixture control valve from Home Depot.

> Paul Lamar


You do know they have ball valves in pvc that are much lighter and work
better, don't you? <g> Much cheaper too. <vbg>
jofarr, soddy tn

Yes but I don't know the long term effects of gasoline
on PVC. There are bronze valves with chrome balls
running in Teflon seats. Can't get much better than
that. Also $7 each is very cheap for an aircraft
part.

Paul Lamar ...No rotor no motor.

The Cole-Palmer website
http://www.coleparmer.com/techinfo/ChemCompResults.asp

rates PVC w/ unleaded gasoline as
Fair -- Moderate Effect, not recommended
for continuous use. Softening, loss of strength,
swelling may occur.

rating for leaded gasoline:
B = Good -- Minor Effect, slight corrosion
or discoloration.


I use a PVC tube for unleaded gasoline transfer. After one year of use
it is discolored. It is a gravity flow installation, so I do not know
if any loss of strength has occurred.

Doc Custer
Retired software engineer and sometime Audiologist
Building RV9-A. Fuselage


This is a somewhat clearer 3D of the over all system.
This would be duplicated for each rotor.
If one leaning valve is used for each rotor
the exact mixture can be set for each rotor
based on the EGT numbers for that rotor.
Something most EFI systems cannot do.

This can be easily retrofitted to any of our
recent slide throttle designs.