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Alcohol increases your risk of vapor lock. Fuel more readily turns to
vapor. This happens at the lowest pressure point in your system (just in front
of the pump veins). Prevents pump from moving fluid. Since some of you (e, j)
are very close to vapor lock now, it could be the last straw. You guys know how
to test for alcohol? Do the test, then run one tank with, one without. (assuming
you have self priming fuel sys) But don't forget that pump temp, fuel temp are
also significant factors. I would encourage testing under simulated worst case
condition. Then you know you'll be ok in the future. Or you could install
pressure gage on pump inlet, that would let you predict your actual safety
margin.
-al wick
Artificial intelligence in cockpit, Cozy IV powered by stock
Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, Oregon
Prop
construct, Subaru install, Risk assessment, Glass panel design
info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
By the Farm Bureau Paper it is stated that
Wisconsin has passed a law that all 87 no lead will contain 10% alcohol and
that nine other states are considering it. It didn't mention the other
no lead grades. Here in Michigan it is under consideration at this time,
and there is a good chance it pass. Other than cutting the power some
what, is going to effect the operation of the rotary in some other way.
JohnD
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