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
