Title: Gear door and gear clearance
I spent some time over the last couple of days fitting the gear door and ensuring clearance for the tire, wheel, and brake assembly when fully retracted. There are no drawings for the links that connect the gear door to the landing gear. With the exception of a couple of bent and broken pieces, there is nothing left over from the original gear door supports. From photos and what I can gather from the broken pieces, it appears that the gear door is connected to the lower leg of the gear through some rods that pivot on the door itself. Because the gear door hinge is about 4 or 5 inches from the gear pivot itself, the door travel doesn't match the gear leg travel, but travels parallel to the gear leg, exposing more of the wheel as the gear is retracted. This requires a link that is the correct length to pull the gear door in fully when the gear is retracted, but also provide sufficient clearance for the wheel when the gear is extended. The location of the pivot point on the gear door is also critical to this to operate properly. Lastly, since the rods are connected to the lower, unsprung, section of the gear leg and the door hinge is on the wing which can move relative to the lower leg as the gear compresses, the door will draw closer to the wheel when the gear leg compresses. I had to trim down the upper skin stiffener in the wheel bay. The new wheel and tire combination being wider than the original means that the original dimensions of the structure didn't provide sufficient clearance.


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