Peter van Schoonhoven wrote:
>
> Boy, I for one am beginning to sense that it is getting pretty deep around
> here with all this power/performance/on the step stuff. I really like this
> email bulletin board as it relates to building and flying Europas, but some
> of this has gotten out of hand.
>
> Now we are supposed to believe that you can get more horsepower out of fuel
> with a higher octane rating? Oh Please! Octane only relates to the
> anti-detonation characteristics of the fuel, not the amount of power it can
> make. Unless you can increase the compression ratio when you go to the
> higher octane fuel you will get the same power output. You either have
> enough octane to prevent detonation or you don't, and putting a higher
> octane fuel in than you need will provide no additional benefit, except
> make the oil companies richer.
>
True - except the calorific value of fuels differ - we found (15+ years ago)
about
5-8%
less on unleaded when compared to 100LL (as found when running racing motorcycle
engines
on a dyno)
M
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