Vapour lock: it is a strange one.
Almost all microlights run almost exclusively on mogas, and vapour lock does not seem to be a big issue.
Is it a question of more modern design, where people are now more aware of bore of pipe, route of pipe, length of run, kinks, etc.
Or is it that many microlights can be successfully landed in small areas and then people do not report it?
Am also thinking of carb ice. Some microlights, like the C42, are designed with no carb heat and some have very different types of permanent carb heat, of sorts that have nevr gained certified approval.
Modern cars, unlike me mum's old VW Polo which could never get up Shap in one go because of carb ice, don't get carb ice now they are injected.
I presume injection won't solve vapour lock since it is a presurised pipe, so why don't we hear much about vapour lock in cars. Has it been designed out of them?
So, to sum up. Is there a lesson we can learn from microlight/cars. Or is this a problem just faced by older designs?
Or is the fuel in the Alps and the Rockies so, so different as to work in cars at altitude with no difficulties?