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It would have been better to not screw up in the first place. Sigh. But, here is my fix. A piece of .025 bent to fit the inside of the rib and pick up both the row of drive horn rivets as well as the skin to rib rivets. Then a little joggle to get the repair piece to be flush with the skin. I will u...

Hi all, I have been thinking about why ram air does nor work with aerocarbs. A regular carb with a venturi will have fuel flow proportional, more or less, with airflow. If I understand correctly, an aerocarb does not, fuel flow is controlled by needle position and whatever head pressure there is. So...

Hi all, I have a question into Kerry at Sonex, but would solicit your experience too. One of the things I find challenging in this build is that many parts are designed around using minimum edge distance as the norm, i.e. 1/4" for 2D. When parts line up with edges on either side of the line, yo...

Initially found this a bit challenging as there is nothing backing up the skin. Got some quality duct tape (gorilla brand), formed it into a T shape, and stuck it on the skin. This way you can pull on the tape with pliers. It actually works better pulling away from the edge of the tape, which is not...

Tom,
You are outpacing us. We have about 75 man-hours so far. It goes quick though doesn't it. I do not regret my choice to spend the extra money on the machined parts or spars.

Drilled the ribs to the right side tonight.

Chris, I built an RV4 tail then switched to a scratch build hummelbird. The skills are not hard. Aircraft factories are filled with people that started off the street with no experience. You need to read up on sheetmetal construction and workmanship standards. You need to practice on scrap or someth...

Late night at the hangar again. I am drilling skins. The wood is a quick little surrogate rib I made to support the skin while drilling. Helps a lot. One thing I figured out is you don't really have to measure out the holes for the angled part on the root - just lay a straight edge across the other ...

David,
Excellent! You will have to post some progress pictures sometime. There is a guy in my neighborhood with a Onex tail kit and I keep trying to get him to start. I think he is waiting to retire from the airlines.

Adam drilled up the left side while I helped Matthew on his project.

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Re: Edge distance

Ram air and aerocarb musings

Edge distance

Drilling control surface skin overlaps

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