Subject: Combination slide throttle and carburator
From: Rotary Engine
Date: 11/11/2006, 8:09 AM
To: AA-me



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



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