Bought October 2011

This is N19WT, a Viking Dragonfly built by Walter Triplett with performance data and first flown in 1987 (details). The late, Walter Born bought the plane and it was hangered since 1993. In November, I trailered it to Huntsville AL:


Comments? Questions? These can be mailed to: bwilson4web@gmail.com.

Past and Current Project Log

Earlier, project logs by month:

2016/03/29 Getting Back To Work

Major medical for Holly and myself suspended the project for two years with 2015 being the worst. Fortunately, health issues are resolved and now to get back on the project. Things to do:

2016/04/02 Firewall Forward

The first problem is to make a duplicate of the firewall. So I bought a piece of regular grade, plywood (this is not a flight article) large enough to make a duplicate. For a pattern, I used the existing cowling:

There were problems:

Instead of burning the plywood, I used a large piece of cardboard and traced the cowling. Then I took the cardboard to the plane and verified the outline was not an exact fit:

Ok, the lesson learned is to do the sides first with something like a large construction or shirt-cardboard. I'll fold an edge and clamp it to the engine mount "L" structures. Then I can trace both the edge and relationship to the engine mount.

One good thing is it now gives some metrics that will improve the project:

By extending the trailing edge of the cowl flaps, they will also work as speed brakes. Then adding a valve on the cabin side, safe heat from the radiator.

2016/04/10 Firewall Forward

So after several attempts that had errors, I finally 'cut plywood':

Not perfect, it is close enough to build out an engine test stand. The goal is to get the mounts and stress and strain operation.

This composite shows the inside of the cowling fitting over the plywood cut out. Due to the camera paralax, the sides are not 'straight':

The camera was put at the cowling inlets to take these quick shots. I will repeat the shots with the camera located the the outside edges of engine air inlets to correct the parallax.

This is the cowling which fits around the firewall:

We need to measure the blister and lower exhaust areas. Right now, we think the passenger side blister will be needed for the exhaust muffler. Now to rough-out the engine mounts in this firewall.