Joseph writes:

"This morning I was able to test my new Enhanced Delta Vortex.

"It has a 6 foot wingspan and it is powered by a 120 2 stroke engine.

"It is a magnificent flyer (as expected … ).  

Joseph went on to write:

"The singe fin is removable, that’s the reason for the servo embedded in it.

"The purpose of the wingtips (made of ¼” lite ply) is to protect the extremes of the elevons.

"They are very necessary because with the wingspan at 6 feet it is very easy to hit every extremity of the airplane.

"The long tail boom is also reinforced against abuse (very necessary with me …)

"Next Sunday morning I will complete the qualification tests.