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Plans & Book |
Top
Row
Photo #1 - Here I show my landing wire straps and my rear wing spar attach straps. Photo #2 - From the front of the fuselage looking back. Shows the criss cross cables and the top wing center section as it is installed. Photo #3 -Looking from the front of the fuselage, this is the cross wire attachment and turnbuckle. It will be enclosed in the front of the front cockpit near the fuel tank. Photo #4 -This is looking from the left side of the fuselage. The front of the fuse is to the left. It shows the criss cross cables and turnbuckles as they are attached to the rear streamlined steel cabane tube. These will be enclosed as I sheet the top part of the cabin area. Photo #5 -A close up of the die spring as it will be installed. Outer 3/4" - 4130 tube has 2 3/4" slot milled in it. Inner 5/8" tube just has a quarter inch hole drilled in it. The bolt goes through the drilled out dealie bob, then through the slot, then through the hole in the 5/8's, then back out the backside slot and back into the movable dealie bob where a nut is attached. Bolt shown is not the one I will ultimately use. Bottom Row
Photo #2 -This shows the .080 - 4130 triangular gusset that is slotted into the horizontal axle tube, then welded. Photo #3 -It is fun to watch a craftsman at work. They make it look so easy. Bozeman at the torch. As I am creating this narration I have just been notified that Robert passed away about 2 hours after this photo was taken. He was doing what he loved to do ......... flying his Pietenpol. I have no details of the crash at this time but can attest to the fact that he was a damned good pilot, builder, & human being. It just seems like God takes the good ones too early. Photo #4 & 5 -This shows that we intentionally made the gear strut a little short so that the axle has a 4 degree downward/inward slant without any weight. After it is attached to a 700 lb. airframe, it should compress the spring and hopefully bring the wheels perpendicular to the ground. This was computed using the W.A.G. mathematical theory. ( stands for Wild Ass Guess) Definitely not rocket science but the formula is sound and easy to implement. I used a Robart Incidence meter to set the 4 degrees. Since that time I have had the axle plates welded on and that changed all my rocket science. But I did decide to calculate what the slant should be and it came out at 2.6 degrees. So 3 degrees will probably be what I will shim to. As I recall, each die spring handles 1064 pounds at full deflection and compresses about 2 1/2 inches. So at 1200 gross, each would be depressed about an inch and a half, which would move the axle EXACTLY 2.6 degrees ..... (maybe). |