Recent content by Gregory Perkins

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    HP and Torque Rotax 477

    About 20 years ago a member of our local EAA chapter was the Lockeed engineer that designed the carbon composite 6 blade props for the C-130 transport after it had been using aluminum for forty years. He gave a presentation that basically said to focus on the 80 percent of the prop that...
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    BEDE's Hidden thus Forgotten design - SUPER DEMOISELLE

    I think we all agree that there could be no technical reason on this type of plane that could have stumped Jim Bede. I believe he had much bigger fish in the pan and greater ambitions and realized the burden of support would be much greater than any financial reward. It is hard to imagine any...
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    BEDE's Hidden thus Forgotten design - SUPER DEMOISELLE

    My understanding of architectural two bit document scanning. A long time ago a technology was developed to reduce a document digital image to the smallest possible digital file for the purpose of sending by fax. A file format call TIF-II was created. Every pixle in a scan was either blank (...
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    BEDE's Hidden thus Forgotten design - SUPER DEMOISELLE

    No one knows. It could have been a business decision or a technical decision. The magazine advertisement is dated 1965 so you have to look at the context of other projects he was involved with at the time. You can look at Wikipedia and see his other models ..... if anyone here is familiar...
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    BEDE's Hidden thus Forgotten design - SUPER DEMOISELLE

    I have been to three different commercial industrial blueprint outfits using different brand scanners that scan and reproduce drawings and blueprints and maps mostly for the construction industry. They scan at high resolution which is 600 dpi. They do create a digital file but the detail...
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    Looking for plans

    The word Superset is throwing me off. Are you meaning to say "Supercat" Do you know the designers name ? And are we talking about the UL made of wood ?
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    BEDE's Hidden thus Forgotten design - SUPER DEMOISELLE

    Jim once developed a design and began to sell the plans and immediately changed his mind and attempted to buy them all back..... except for one set. The buyer refused to sell them back. I have them. I have not been able to scan them because they are all black with white lines. I have tried...
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    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    The pictures of the airframe are 4 or 5 messages previously here refered to as novel tube design. That is the Nomad Airframe that has been stored in a covered trailer.
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    Looking for an alternative engie for the 503 and 582?

    I dont believe the Thor is using those carbon rods. I have been reading about a Formula 1 racing outfit that has been using a technique called Forged Carbon where their carbon rods are compressed in molds at high pressure and are of course solid not little geometric structures made in a 3D...
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    Aluminum Tube & Gusset Airbike / Legal Eagle / Parasol Thread

    How bout two completely assembled wings plus an airframe ( as pictured ) for $500 in Atlanta, GA ? Nomad - 36ft span The wings are covered but I wouldnt fly it without stripping the covers off for inspection.
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    Looking for an alternative engie for the 503 and 582?

    You make a good point. Maybe it is more likely that Jeron Smith of Raven Redrives cut two cylinders off of a 4 cylinder Suzuki engine. It was a hundred times more attractive to me than the half-VW twin. I saw his engines and redrives at Sun&Fun.
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    Looking for an alternative engie for the 503 and 582?

    Does anyone remember when Rotax started to sell a 4 stroke version of their 503 motor ? It was really zooming up in popularity and was feared to kill all 503 sales so they discontinued it. I am not sure but I think they called it the 508 and also an opposed twin called the 906 which was...
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    Looking for an alternative engie for the 503 and 582?

    I remember and greatly admired Raven's work with the GEO Suzuki 2 and 3 cylinder motors but about ten years ago I tried to find some of their motors and could not find any in USA junkyards. Remember he cut one of the cylinders off of the 3 cylinder motor to make the the smaller 2 cylinder...
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