I know turbos on cars are used to increase performance, but I thought a
turbo on a plane is used only to maintain sea-level performance at higher
altitudes. If so, I don't see why they should cause any greater stress on
the engine than running at the same throttle down near the ground.
Mike Taglieri miket--...@juno.com
Everyone has his reasons.
- Jean Renoir "The Rules of the Game"
----- Original Message -----
From: "Jon Finley" <j...@finleyweb.net>
To: "KRnet" <kr...@mylist.net>
Sent: Sunday, December 26, 2010 10:42 AM
Subject: Re: KR> VW True HP
>
> Hi Jose,
>
> Yes, a turbo is magical at creating torque! Oh ok, there is nothing
> magical about it....
>
> Obvisously, there are many different ways to run a turbocharged engine. If
> we are talking about normalization and/or very slight boost, a turbo'd
> engine will provide more "output" that a non-turbo'd engine for any given
> useable RPM. However; that is a gross oversimplification (with lots of
> assumptions) so not worth much.
>
> My position on your original question is that there are a few people who
> have a great deal of experience and this tends to make their
> "guesses/estimates" more accurate. However; there are many, many people
> just making wild guesses (homebuilders, marketing folks, conversion
> companies, etc...). Because of this, I don't believe anyone until I see
> dyno numbers.
>
> The ACCURATE recording of aicraft/engine performance and comparison to
> similar aircraft seems to be a reasonable basis for comparison of power.
> However; every (homebuilt) airplane is different so this is only a "ball
> parking" excercise in my opinion. Additionally, you are usually comparing
> to another aircraft with an engine who's output has never actually been
> measured so the whole excercise is questionable. Another "ball parking"
> tool is accurate recording of fuel burn.
>
> I admit, I live in a world of absolutes and precision - not everyone sees
> the world this way. In short, when someone tells me that their engine
> produces 84 hp but cannot produce a dyno sheet and/or tell me under what
> conditions it produces that power, I do not believe them (it may be more
> or it may be less).
>
> Jon
>
>
>
>
>
> -----Original Message-----
> From: "Jose Fuentes" <jose.fuen...@gmail.com>
> Sent: Sunday, December 26, 2010 7:24am
> To: "KRnet" <kr...@mylist.net>
> Subject: Re: KR> VW True HP
>
> Thanks Mark,
>
> Tell me, with a direct drive 2400cc VW motor, does a turbo have any effect
> on HP at prop speed?
>
> Joe
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