Re: Light-Sport Aircraft Yahoo group Can anyone read German

Here we go again and I don't mean to be critical but everything you mentioned is thinking through someone elses mind. Poohing on Allison and P&W and GE and the big boys. It can be done and it can be done by a homegrown machine shop. It can't if we don't change our mindset and quit waiting for them to solve our needs. Cessna, Allison, P&W. Rolls Royce, GE are profitteers. They could care less about us.   

The idea that Turbines don't comply to LSA's? That's a mans rule not a natural rule. The cri cri uses turbines, works and flys. So change the rules rather than accept them or fly around them as I do. ( Ieven fly through an occassional cloud but don't tell anyone because it's "against the rules".

 

The model airplane industry is far ahead of sport aviation in technology. Why is that?

 

As far as diesels, we could have a 2 stroke diesel that burns diesel fuel but we don't, wonder why that is? We have everything it takes except doing it. We have our minds stuck somewhere. While I respect your opinion and loyalty for staying with Rotax, Rotax is making a fortune on that hope. It shouldn't stop the rest of us from wanting and expecting something better. I'm not unhappy with the old Continental and Lycoming even though they are obsolete. But that doesn't stop me from looking to the future. I still love the old P&W's and Curtis Wright and other big rounds. Can I afford to run them? Hell No and neither can the airline business, but I love to see someone else run them, like those historical societys. I miss the old days when a Superconnie or Globemaster would fly high overhead and it would make me old Black and White TV roll vertically . . . remember that? I could almost tell you what plane and engine it was by how me old round B&W TV reacted. You wouldn't like it back then before HDTV and MP3 and Facebook.

 

But I'm still hoping and dreaming for that little tiny turbine or rotary or whatever to power my "one man flight needs" on a thimble full of fuel.

 

Bruce

 

  

 

On Wed, Dec 22, 2010 at 2:23 PM, <FlyingGatorJohn@aol.com> wrote:

 

The Pratt & Whitney PT6 is one of the most popular turboprop aircraft engines in history,The PT6 family are particularly well known for their extremely high reliability, with TBO's on the order of 9000 hours in some models. The PT6A is a free turbine providing 500 to 1,940 shaft horsepower (433 to 1,447 kW).

 

Bruce, it seems a 1/2 or 1/4 scale version of the PT6A would do the trick, one that produces 100hp would be perfect for LSA...oops turbine is not allowed in LSA's, Diesels and Rotary engines are allowed

 

Rotary engines are noisy but light, however they burn a lot of fuel causing you to need larger fuel tanks and wallets

 

Diesels are underpowered and very very heavy

 

i guess we are stuck with our Rotax engines, that's ok with me, they are reliable, light and powerful

 

john

 

In a message dated 12/22/2010 2:58:23 P.M. US Mountain Standard Time, gpabruce@gmail.com writes:

 

HI Rick and thank you,

 

What I was originally browsing for was this, and I know I'm asking for a firestorm from this but here goes:

 

The direction for all aviation and man kind is in simple efficient power units that can convert "something" (some form of energy) into motion in the most simple and effective manner. Many times man loses sight of this and gets hung up on a "step" in that process like he has with the reciprocating engine. The recip is an antiquated, obsolete design that the American Industry cannot seem to grow beyond. This is the downfall of American big industry. When they make money on ABC, they refuse to move on to BCD and CDE until they have exhausted all the resources and profits from ABC and squeezed every drop of profits out of it. The Oil cartel (industry) is a prime example. The Auto Cartels are another and so on. 

 

To date we find some great power technologies in large airlines, in large ships, trains and heavy equipment and also down in the mini, micro and nano technology. Just model aircraft are far more advanced than General Aviation. General Aviation could be affordable but the people who control it have the old mentality of "bend over a dollar to pick up a dime". Homebuilders and experimentalist should not get hung up with GA and their direction. We as experimental home builders should always be searching for new and better ways to get the job done. Rotax is not it, it's only another more expensive version of the same old obsolete technology, pistons flopping every which way trying to extract energy from fossil fuel, trying to please the fossil fuel people while converting it to motion . . . . It's plum silly even to an old bastard like me!  I came from the old radial engine and steam engine days. They were quite the thing then and still are (for museums) but they are no longer efficient, effective, or practical and we (our young brillient children) should be looking beyond that technology, hense my browsing to see if anyone in the business is producing a turbine or rotary power unit, something where the parts turn a continuous direction rather than the old "design to self destruct mentality" of the past. I'm waiting for that lightweight power unit in he 50 to 250 hp category that has been overlooked for centuries (a huge auto and aviation market by the way). I can buy one off the shelf for a model airplane and I can buy one off the shelf for a huge airliner but I cannot buy one off the shelf for a LSA. So my question is, "what's wrong with this picture"?

 

That's only part of the subject but enough for now. Okay, everyone on the list go ahead and hit me now . . . LOL

 

Bruce 

 

       

 

 

On Wed, Dec 22, 2010 at 9:49 AM, Rick <lightflyer@adelphia.net> wrote:

 

--- In Sport_Aircraft@yahoogroups.com, b d <gpabruce@...> wrote:
>
> Thank you, I must have missed it. For those who have a wider experience with
> this size, weight and power of engine, how does $5450.00 sound for a price
> for that power range? Anyone have any thoughts or experience in this?
>
>
> Bruce
>

The price seems to be comparable to the well-proven Rotax 503 and 582. But the price isn't the whole story.
The race-Kart engine is rated for use in a land-based go-kart and capable of producing max power for short durations and probably NOT going to get you to a TBO that is satisfactory for aircraft use.
As an example, the 64 horse Rotax 582 is rated at over 125 horsepower when used in a jet-ski or snowmobile.

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