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FE-109 Frankenschmitt
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FE-109 Frankenschmitt
batjac Sun May 29, 2016 10:23 pm
Well, being under the weather again and unable to get out, I decided to get some more work in on a project I started half-heartedly sometime early last year. I had some parts for a ME-109 SuperStunter and wanted to make a whole plane, so I made up the parts I couldn’t fine online. I had the fuselage, belly pan for the solid wing version, tail feathers, and bellcrank for a SuperStunter, and that’s all. Unfortunately, Bernie hadn’t had the parts I needed yet, so I decided to make them myself.
First thing I did was to make mirror images of the upper wing fairing out of balsa and glue them to the belly pan.
Then I made a stub spar using the plans for the FW-190 that came with the free foam wings from the 70’s. I cut slots in the balsa wing fairings and glued the stub spar to the belly pan. Worked pretty well.
Next up was the lower fuselage forward of the wing. I taped a couple of pieces of hard 1/16” balsa to the inside of the fuselage and then some sheet for the fuselage sides to conform to the fuselage shape of the original.
Then I glued the bottom wood to the side formers and sanded it to shape. This provides a nice bay for a balloon or a bladder tank.
Next I shaped a firewall of thick balsa (Yeah, I know, should be ply) to match the shape of a product engine backplate and glued it to the lower fuselage. Since it’s a Frankenplane, I decided to eschew the product engine and use a TeeDee on it. I finally get to use the TeeDee/Medallion backplate I got from Texas Timers. I mounted the backplate and put some Tee nuts for 2-56 screws in the back. Then I mounted the TeeDee .049.
More to come, however slowly.
The Glacial Mark
First thing I did was to make mirror images of the upper wing fairing out of balsa and glue them to the belly pan.
Then I made a stub spar using the plans for the FW-190 that came with the free foam wings from the 70’s. I cut slots in the balsa wing fairings and glued the stub spar to the belly pan. Worked pretty well.
Next up was the lower fuselage forward of the wing. I taped a couple of pieces of hard 1/16” balsa to the inside of the fuselage and then some sheet for the fuselage sides to conform to the fuselage shape of the original.
Then I glued the bottom wood to the side formers and sanded it to shape. This provides a nice bay for a balloon or a bladder tank.
Next I shaped a firewall of thick balsa (Yeah, I know, should be ply) to match the shape of a product engine backplate and glued it to the lower fuselage. Since it’s a Frankenplane, I decided to eschew the product engine and use a TeeDee on it. I finally get to use the TeeDee/Medallion backplate I got from Texas Timers. I mounted the backplate and put some Tee nuts for 2-56 screws in the back. Then I mounted the TeeDee .049.
More to come, however slowly.
The Glacial Mark
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Re: FE-109 Frankenschmitt
MauricioB Sun May 29, 2016 10:57 pm
Hello, how nice and good project work to combine balsa wood and plastic to achieve restore the model ... the restoration and return to life a beautiful model are challenges to perform !.
Follow your progress !, greetings, Mauricio
Follow your progress !, greetings, Mauricio
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Re: FE-109 Frankenschmitt
getback Mon May 30, 2016 6:22 am
That's Slick Mark ,really like watching your build progress and this is no different . The pan came out looking good and forms in nice and the TD will put some UMP in to it! Why did you go with the Balsa firewall think it will bee strong enough? I will be watching this one ,I have a couple plastics that need attn. but right now finishing some need to get done first before starting another project // Sorry to hear your under the weather again 
getback 
getback 
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Re: FE-109 Frankenschmitt
roddie Mon May 30, 2016 6:32 am
Hey Mark, Really nice work there! Sorry that you're still not feeling up to par.. That certainly hasn't affected your creative ability!
As far as the balsa firewall is concerned.. it might help to treat it (soak it..) with thin CA. First; plug the blind-nut holes/threads with beeswax (like Jim Roselle does..) to keep them clean. The thin CA will harden the balsa, which might otherwise split from vibration. Gluing a small piece of 1/64" ply to the front side of the firewall would help guard against splitting too. That Tee Dee looks mighty-fine sitting in there!
It would probably be a good idea.. before you paint it; to treat the entire balsa assembly (inside and out) with thin CA.. and then coat the inside surfaces with epoxy, for more fuel-resistance as well as durability; where you will be removing it from time to time, to access the tank-bay?
You might be able to closely match the fuse's plastic finish by using flat-black paint.. and top-coating with clear "Satin" Minwax Poly. Try a test-finish on a scrap piece of balsa.
As far as the balsa firewall is concerned.. it might help to treat it (soak it..) with thin CA. First; plug the blind-nut holes/threads with beeswax (like Jim Roselle does..) to keep them clean. The thin CA will harden the balsa, which might otherwise split from vibration. Gluing a small piece of 1/64" ply to the front side of the firewall would help guard against splitting too. That Tee Dee looks mighty-fine sitting in there!
It would probably be a good idea.. before you paint it; to treat the entire balsa assembly (inside and out) with thin CA.. and then coat the inside surfaces with epoxy, for more fuel-resistance as well as durability; where you will be removing it from time to time, to access the tank-bay?
You might be able to closely match the fuse's plastic finish by using flat-black paint.. and top-coating with clear "Satin" Minwax Poly. Try a test-finish on a scrap piece of balsa.
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Re: FE-109 Frankenschmitt
batjac Mon May 30, 2016 1:25 pm
The reason for the balsa firewall is simple. I cut out a balsa blank to use as a template for cutting out a ply firewall and then shaped and sanded it until it fit into the socket for the product engine. Then, unthinkingly, I glued it into the lower fuselage (like I said, I'm not 100% at the moment). I thought about cutting it out and re-doing it in ply, but WTH. I'll just soak it in CA and run with it. Can't be any weaker than the plastic mounting tabs that the plane comes with.
Roddie, I already soaked the inside with thin CA. I still intend to install a plastic liner to protect the bladder/balloon from any sharp/rough edges in the balsa pan. I have to figure out exactly where I want the fuel tube to exit. I'm thinking I'll have the fuel line exit the left side behind the firewall and go up to the engine so I can use my left index finger to put pressure on the fuel tube and shut off the fuel flow if I go with a bladder. Makes it easier than trying to fuss with a clamp while trying to start the engine.
The Fussbudget Mark
Roddie, I already soaked the inside with thin CA. I still intend to install a plastic liner to protect the bladder/balloon from any sharp/rough edges in the balsa pan. I have to figure out exactly where I want the fuel tube to exit. I'm thinking I'll have the fuel line exit the left side behind the firewall and go up to the engine so I can use my left index finger to put pressure on the fuel tube and shut off the fuel flow if I go with a bladder. Makes it easier than trying to fuss with a clamp while trying to start the engine.
The Fussbudget Mark
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Re: FE-109 Frankenschmitt
roddie Mon May 30, 2016 3:40 pm
That's something "I" would have done.. (gluing in a pattern.. rather than the intended part.. 
) but like you said.. WTH..
I'm curious about those foam-wing panels. This is a COOL project!
) but like you said.. WTH.. I'm curious about those foam-wing panels. This is a COOL project!
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Re: FE-109 Frankenschmitt
RknRusty Mon May 30, 2016 5:27 pm
This is interesting, and nice work. Since my concerns have been discussed, I'll just watch as it develops.
Rusty
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Re: FE-109 Frankenschmitt
Cribbs74 Tue May 31, 2016 10:39 pm
Nice work Mark.
Do you plan on running the TD on pressure?
Do you plan on running the TD on pressure?
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Re: FE-109 Frankenschmitt
ian1954 Wed Jun 01, 2016 4:10 am
I too like the idea of blending the plastic fuselage with balsa and the engine pod looks neat.
What are you using to stick the plastic and the balsa together with?
I haven't had much success sticking plastic to balsa or wood.
What are you using to stick the plastic and the balsa together with?
I haven't had much success sticking plastic to balsa or wood.
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Re: FE-109 Frankenschmitt
getback Thu Jun 02, 2016 12:12 am
I was wondering that same thing !!I haven't had much success sticking plastic to balsa or wood. wrote:
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Re: FE-109 Frankenschmitt
batjac Thu Jun 02, 2016 7:36 pm
ian1954 wrote:I too like the idea of blending the plastic fuselage with balsa and the engine pod looks neat.
What are you using to stick the plastic and the balsa together with?
I haven't had much success sticking plastic to balsa or wood.
Ian,
I just used medium CA to glue the balsa to the belly pan. Works well so far. When I attach the foam wing to the plane, I'll use hot glue.
The Big Belly Mark
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Re: FE-109 Frankenschmitt
batjac Thu Jun 02, 2016 7:41 pm
Cribbs74 wrote:Do you plan on running the TD on pressure?
Ron, I think I'll try a balloon first. I seem to have lost a fine needle assembly for a TeeDee. I'll look at getting another fine assembly from Texas timers here soon, then I'll look at a bladder for it. BTW, thanks again for the goodies.
The Misplaceful Mark
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