The Aeroworks Extra 300 Profile FUN FLY

Aeroworks Profile Extra
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June 2002
This is the big fun fly airplane from Aeroworks. A friend and I took this on building TWO of these as a joint project. At the time, we each had a YS 120F engine that we would use for this plane. We divided up the framing and covering tasks and finished the first plane just a few weeks after we started. One full month into the season, I have swapped my YS 120 for a Saito 180 in this plane.

The Aeroworks Extra 300L 80" Profile Plane

My friend and I have each just built the 80" Extra 300 profile plane from Aeroworks. He and I were looking for something outrageous to put our YS 120's in. We have built one full span at 80" and the other one rib shorter at 73" . I flew mine on the YS 120 for a month or so in the 2002 season, then made an engine swap in mid-June. Power for the clipped wing plane is a Saito 180.

If you take on this project, know that the instructions are for this kit are terrible. They're just photocopied typewritten instructions that do NOT always match the plan. The plans don't match the building instructions 100% either. In fact, while framing Aeroworks was called a couple times during the process. When asked about better instructions and current plans, they said they only sell a dozen or so of these kits each year now, so they will probably do nothing.

No big deal, the planes are a HOOT. And plans and instructions notwithstanding, they ARE really well engineered and they're light. They tout this one as "the King of Fun Flys". The first of TWO of these that we're building was completed a week ago. The only issue to address before it was ready to fly is the CG. Aeroworks said it need to CG on the spar and that we could expect it to be NOSE heavy with a YS 120 on it. Instead it came out a little tail heavy. By adding a hub to the engine crankshaft, moving the engine forward about an inch and moving the battery way forward in the wing root, it DID CG without adding weight.

Another view of the second plane

Underside

1st plane underside

Plane 1

Fuselage on the bench

The first plane done is the full 80" one, covered orange/white/black. The next one, done just today (4/14/02), is clipped-wing at 74". All up weight of the 80" one is 9 lbs, 14 oz. The shorter winged one has finished at 9 lbs 4 oz

Now for the FLYING. We got this first Aeroworks plane flown. All I can say is W-O-W! This thing does it all. The first plane finished was my friends. This was a joint project to build two of these. The YS 120 and the Saito 180 are very comparable in power and weight. These engines seem PERFECT. Power is ridiculous. The plane hovers all day and can rocket vertically out of a tailsllide. We CG'ed this one about 1/2" aft of the spar.

NOTE: In August 2004 I sold the plane. I love the plane, but had done absolutely everything it's capable of. I needed funding for another project.