Dave Disney:
Your auxiliary/boost pump will not "prevent vapour lock" - The only way to
reduce
the chance of this happening is:
To install the Rotax recommended fuel by -pass system
Only fly on days below 30C
Minimise ground running
On very hot days -perform an extended high power run-up and plan for an engine
out/low on power.
As this is an international forum for Europa aircraft, you might want to specify
what country you are operating from - reason- fuel standards, terminology varies
between countries. Statements such as "there's no such thing as ethanol free
car petrol" may only apply to your geographic local.
Also: Rotax 91 engines are found in a wide range of aircraft. For the most part
their operation and service /fuel requirements are the same ie not Europa
specific.
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