# Recent content by Bob Gregory

1. ### MTO Sport 2017 stick and body shake; bad!

This may have nothing to do with your problem. When I heard the rotors clicking when winding down. Made c[orox bottle washers to fit on each side of blade ( four to six washers). Smoothest and quietest flight had ever made. But blades were "sticky", too much friction, so removed a couple...
2. ### Shelbyville Fly-in Aug 26 - 28

Shelbyville Gyro Flyin to be at Mt Vernon, Illinois airport Friday, Saturday and Sunday. See you there.

4. ### Another Bluesky, this will never work.

A rotor aircraft using down forced air. http://vortexvtol.com/
5. ### Drag for wing, airframe, climb power.

Have a mathematical theory about the formation of the universe but if I take a bag of balsa wood sawdust and place a firecracker in it I could have the answer without the mathematics. Einstein was such a dummy.
6. ### Aspect ratio

Jean C, this maybe too elementary for you. A comparison between two rotor chords.
7. ### Drag for wing, airframe, climb power.

Paul, thank you for the reply. You may have set me off on another quest. " Does "drag-under" effect the Magni and the RAF? " Sent a page on drag and horse power relationships that use 49 variables and 218 formulas to reduce Cd to one ....... number. Our society of instant gratification want...
8. ### Drag for wing, airframe, climb power.

BG.............Need a little help. Want to know if the Total Drag is 20.9 inches above the CG on Mr. Beaty's gyro? If not, where is the Total Drag? MIke G..........And you verified all of this how? Posted for some help. If you perused the sheet you could see it is a tool to be...
9. ### Drag for wing, airframe, climb power.

Paul, the sheet shows the CD 20.9 in above CG at 50 mph, AOA 9 deg, rotor 69lb, frame 43.5 lb. CD 19.3 in above CG at 55 mph, AOA 8 deg, rotor 61 lb, frame 52.6 lb. CD 14.8 in above CG at 65 mph, AOA 5 deg, rotor 38 lb, frame 73.5 lb. So your critique is valid. The sheet was used to get...
10. ### Drag for wing, airframe, climb power.

Need a little help. Want to know if the Total Drag is 20.9 inches above the CG on Mr. Beaty's gyro? If not, where is the Total Drag?
11. ### Eich JE-2 Gyrocopter

Jim Eich's incident with a dust devil that was without dust by Norm Regnier. Incident happened at September 1991 El Mirage flyin. I have heard several reasons for this accident. Here is the explanation from his close friend. ""The sneaky Clear Devil or Dustless Devil. It carries no dust...
12. ### More tractors landing?

Wind Ryder's, Jim McCutchen and Kurt Shaw, attempt to produce a tractor style gyro with the rotor constructed to lower in front of the rudder. A two place using a Chevolet 4.3 liter turbo charged V-6. A three blade rotor with a 80 inch propeller. Designed in October, 1991 at the unheard price...
13. ### More tractors landing?

Cierva 12, is a long bodied gyro. Flew May 23, 1929.
14. ### Center of Gravity

This may help. Although the aerodynamic center is far back because of the long tail. I hear Ron H. shortened the tail some for maybe the record holder.
15. ### Pedal question.

For aircraft performance add lightness, heavily. Cavelamb said this - aluminum to aluminum will gall where steel/aluminum won't.