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Fred Scheaffer

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About Fred Scheaffer

  • Rank
    New Member

Personal Information

  • Real Name (Public)
    Fred Scheaffer
  • Location (Public)
    Croswell , Michigan

Project/Build Information

  • Plane
    Cozy Mark IV

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  1. No possibly engineered structure areas . Right now i am in the idea phase . nothing is etched in stone yet .

  2. Fred Scheaffer

    up scale plane size for more payload.

    Trees are not planes and have much different physical structure requirements You half to under stand the materials you are working with . Just for example take a one square foot of Kevlar 4 oz per foot . Epoxy the peace and see if you can break it. And if it's a composite structure . You can stand your hole dam big ass tree on it and it's not going any where. Just a semantic example .
  3. Fred Scheaffer

    up scale plane size for more payload.

    But i don't want to diminish fuel capacity Thus the quest !
  4. Fred Scheaffer

    up scale plane size for more payload.

    It's good to remain positive . Thing don't become better without trying something new . Or altering something to improve upon it . That's how the Cozy and Cozy MK 4 came about.
  5. Fred Scheaffer

    up scale plane size for more payload.

    That's the fun part. Just time , materials and money !
  6. Fred Scheaffer

    up scale plane size for more payload.

    Any change to fuselage size would require testing to determine if the structure is weakened . The structure can be just as strong without adding more weight. You half to be smart on the construction Materials used ect .
  7. Fred Scheaffer

    up scale plane size for more payload.

    Not really looking for more space . Looking for more weight capacity .
  8. Fred Scheaffer

    Altitude considerations for Liquid cooling

    Interesting topic. My observation is that water boils at lower temperatures at higher altitudes. Thus the temp inside the engine is not seeing altitude pressure . The liquid inside the engine sees one atm above sea level pressure because the cap is rated for 14 psi . One atm above see level. The spring in the cap does not care about higher altitudes . It's not going to lift until the internal pressure of the engine reaches above 14 psi. And at higher altitude the outside temperature is colder. If you are running a electric fan on the rad which has a adjustable temp control to keep the engine temp under control . boil over should not be a problem ! And cold should not be a problem either ! Don't know if this was of any help ? Just thought i would through it out their .
  9. The Cozy MK 4 is 16.9 feet long . The Velocity XL is 20 feet long. With greater useful load . Larger canard and larger main wing . But the Velocity weighs 750 pounds more. The thought occurred to me that if one were to up scale the MK 4 and keep to the same build layups . One could increase load capacity and keep over all weight down below that of a Velocity . Any thoughts ?