Boomerang1

Recently inspected (for Australian certification) a Freewing A-10 with two K-45's fitted.

Flew great but the paperwork is noted as speed limited as the factory servos, linkages & horns are probably adequate at best.

oachidori

can you tell me the length of the circular section? I assume that the total length as i measured for the F22 is around 260 mm, starting from the turbine con.

oachidori

Aussie1 i used what you gave me regarding the transformation from circle to ellipse and that is the output..

Aussie1

The circular section can be any length that makes the pipe fit the installation. With my pipe, the circular section is about the same length as the X45 main body, including the shroud covering the electronics on the front. The inlet funnel is a aluminium McDonalds Coke cup, which conveniently is 50mm in its parallel section. Please understand that no scientific design went into this, I made the pipe to fit the F22 using a previous

My F22 taking off with the centre burner lights at full power.

I'm not sure whose photo this is, but I copied them when doing my research on the turbine conversion. Thanks to the original owner of the photo.

Another type of engine installation, no need for a pipe.

Another home made pipe for my FW L39 conversion.


The Coke cup makes a perfect inlet funnel, cheap at $5 each!
concept, and to my surprise, it worked extremely well, plus gave me the advantage of being able to put centre burner lights either side of the thrust tube.

Viper1GJ

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Aussie1, that's my F-22 conversion. It starts at Post #14 above in this thread. Feel free to use any time!
Gary

Aussie1

Wow, thanks Gary, I should have known it was yours by the high quality of the installation!! I was just trying to show that there are multiple ways of converting this amazing jet to turbine.

oachidori

I want to repair and after that to paint the plane. Can you suggest me what i need for that? I never did that, so i need some link with what i have to buy.
tks,

Viper1GJ

My Feedback: (20)

What are you repairing? Show us some photos of our project.

Foam glue, epoxy, craft glues, and wood glues will all work on the foam.

I use light weight water base wall spackle for filler. Spread it on cracks and let dry and sand smooth.

Almost any kind of paint will work on the foam. I use latex house paint tinted to match in sample size jars. Craft paint will work also. I usually coat the whole plane with water base polyurethane to seal and protect the foam surface. It makes cleaning easier.

oachidori

It is about my F22 with x45, i had some bad landings and i need to fill some small holes. I want to keep this until i will be ready for another F22 this time with straight pipe, but i like to have a good looking plane. I still have some parts from the old one when was electric and i want to practice on them. For that i asked exactly what the people use for the foamies. For other plane from balsa it is easier.. for fill the holes, for painting, for preparing the surfaces..

Viper1GJ

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All the items I mentioned above will work well on the F-22. I've used them all on many Freewing foamies. Here we can take a part of the plane to the paint stores and get a latex paint color match mixed in a small jar. It is perfect for painting foamies. The light weight spackle is not the heavy plaster stuff but much lighter and sands easy. Just glue, patch, sand, and paint. I also recommend the water base polyurethane top coat.

oachidori

Finally because i crashed my plane, i ordered a new one but also i made a new pipe.I respected what said one of you regarding transformation from circle to oval to have the same area, and this is how it looks. I have to say that before ending pipe i will use a carbon fiber support. At the moment the pipe, and soon the entire new plane.

Viper1GJ

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Nice pipe. How did you make the bell mouth?

oachidori

I just kept the bell from the kit ordered from bigboyrc, so the bifurcated kit, and i had a friend who sold me this.

oachidori

So i almost finished the plane. I put the pipe an i didn't need to cut the plane, only the inside parts ..That pipe is lighter that the bifurcated with 50 gr. Inside the plane i put some ceramic paper(2 mm thickness), resist at 1200 gr heat and also aluminum tape. I have to cut the support for the pipe(carbon fiber), to remains fixe and that's all. I also painted in black to see the difference between the two faces and be more visible as a pilot.

oachidori

And the movie with one of the flights..it is a big difference in matter of power and consumption, with this pipe and 1 l tank, i flew around 10 min..

Viper1GJ

My Feedback: (20)

New pipe and paint looks great. I think the F-22 was one of my all time favorites. Great job. Thanks for sharing the pics!
Gary

Aussie1

Great video! I have very similar flight times and almost unlimited vertical performance with my oval single pipe, plus it allows the use of centre burner lights either side, which looks very cool!