Recent content by BBerson

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  1. BBerson

    Raptor Composite Aircraft

    Yeah, I think it's more of an Oshkosh show mock up that might just barely fly. Mock ups need all the features. That's the only explanation I can imagine.
  2. BBerson

    Budget Ultralight

    Yes, most can be ordered in either version. There is various reasons for choosing one or the other.
  3. BBerson

    Budget Ultralight

    Lawnmower engines are vertical crankshaft. They are converted to horizontal.
  4. BBerson

    Load Test Question

    I built and tested a wing D-cell almost like this. The caps were stacked (laminated) .032" 2024-t3 formed angles. The laminated angles didn't work as expected and started to buckle in compression between the rivets. I added an additional angle of .125" extrusion. The lesson was that laminations...
  5. BBerson

    Budget Ultralight

    Direct drive. Lots of folks are converting the vertical shaft Briggs and Stratton 810 to horizontal. Search for SD-1 discussion here or elsewhere.
  6. BBerson

    Health Wealth & Happiness

    Sugar and white flour are considered simple carbohydrates. Potatoes are complex carbohydrate. Brown rice, whole grain wheat and whole grain corn are also complex carbohydrates.
  7. BBerson

    Budget Ultralight

    You might find a used 25hp lawnmower. Remove the engine and convert it to horizontal shaft.
  8. BBerson

    Tubular boom from sheet?

    A rolled high strength alloy tube might have superior properties compared with extruded. Or a custom extrusion with thicker caps might be ideal. The kits were probably round "drawn", which is not the same as "extruded".
  9. BBerson

    Crashes in the News - Thread

    I think the 1976 model has the drooped cuff on the entire wing.
  10. BBerson

    Health Wealth & Happiness

    Wheat is poison to me also (gluten). But unlike Americans, most of the worlds people stay slim and almost no diabetes with starch centered diet for energy and less than 10% meat and dairy. (book source: The China Study, T. Colin Campbell PHD Nutrition Biochemist) The MIT Daedalus human powered...
  11. BBerson

    Hole edge clearance question

    Or weld a tab to the nut.
  12. BBerson

    Load Test Question

    Might need .020" at root. I recall that Lazair upgraded to .020" and the strutted Lazair wing is much lower bending moment.
  13. BBerson

    Hole edge clearance question

    Get a long nut and bolt on the outside end of the long nut. No clearance issue. About the same as a thick spacer, I suppose.
  14. BBerson

    Icon A5 Update - No Deliveries!?!

    Icon only delivered 6 in first half of 2020. Founder sues the company investors. Kit Aircraft Are Up; New Sales Are Off — Recreational Aviation Copes with Covid - ByDanJohnson.com
  15. BBerson

    Scrappy’s Landing Gear Wings - Yay or Nay?

    Has anyone read the forum rules about getting personal?
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