- 11.1.5 – Premolded NACA Scoop Installation
- 11.1.5 – Premolded NACA Scoop Installation
- 11.1.5 NACA Duct modification
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl Mod
- 11.1 Engine Cowl
- 11.1.6 Oil Access Door
- 11.2.2 Counterweight Fairings
- 11.1.5 Premolded NACA Duct Installation
- 11.2.1 Canard Tip Installation
- 11.2.2 Elevator Counterweight Fairings
- 11.1.3 Upper Cowl Wing Flange
- 11.1.99 Cowling Baffle Treatment
- 11.1.2 Cowling attach mod
- 11.1.8 Cowling Attachments
I finally finished the finishing on the upper cowling. Until it’s in shiny white primer, I won’t know how good it is, but it feels like it has the right lines.
Now it’s time to cut the oil door. The manual has you draw a 6 inch diameter circle and flatten one edge and put a hinge on it. Then a screw is used to hold it closed. I picked up a hidden hinge and recessed push button latch from the RV guys. So the first thing is to determine the location of where the door will go. To do that I installed the upper cowling and reached up inside and marked the inside of the cowling where the oil filler cap is. Then I removed the cowling and drew out the shape of the door. I decided to go with a “D” shaped door.
Since black marker doesn’t show up on carbon, I used masking tape for the layout.
I then cut all the straight lines. Here’s the top view with only the curved parts left.
Then position the hinge and drill the holes before cutting away the door.
I don’t have a blade narrow enough to cut the curves near the hinge so I drilled a series of small holes.
To keep it from binding while making the final cuts, duct tape will hold it in position.
To make sure it’s in the correct location, I installed the cowling to verified the position.
Then I covered the bottom of the door and made a flange with 4xBID. Once it was cured, I trimed away the excess leaving a flange (or lip) that the door would rest against.
Next I positioned and drilled for the recessed latch. Here’s everything held together with cleco’s.
I’m a bit concerned about the clearance with the J-hinge. It’s REALLY close.
But I’ll wait and see how much movement the engine has before I make the call on that. Best case is I have enough room. Next best is I could trim part of the hinge. Worst case is having to come up with a different hinge.