Wooden Cox .049 Dummy Cylinder - INSTALLED IN PLANE - IT FLIES! - RC Groups
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Mar 07, 2015, 06:05 PM
AndyKunz's Avatar
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Wooden Cox .049 Dummy Cylinder - INSTALLED IN PLANE - IT FLIES!


I'm working on a conversion of a 1/2A C/L stunt plane to R/C, and one of the things I'm doing this time is making a cylinder head for it. It's a stack disks cut on the laser. They are a mix of 3/32" balsa, 1/16" balsa, and 1/32" ply on a 1/8" birch dowel.

After gluing the disks in the right sequence, I put the dowel into the drill press (DON'T use a Dremel - you need super slow with torque) and touched the sides with a nail file to make them smooth. A coat of nitrate seals the wood, then black and silver go on to finish the illusion.

My silver paint is dried out. Here's how it looks right now. I also attached a PDF for those who are interested in making their own.

Andy
Last edited by AndyKunz; Mar 18, 2015 at 08:56 AM.
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Mar 07, 2015, 06:11 PM
Grumpa Tom
Kmot's Avatar
Wow! Looks absolutely real to me!
Mar 07, 2015, 06:34 PM
Registered User
Wow!
Nice work .. V convincing facsimile.
There is also This method
Mar 07, 2015, 08:06 PM
Gravity sucks.
mrittinger's Avatar
Cool!
Mar 08, 2015, 06:49 AM
Kimbers Keeper.
BHOFM's Avatar
I did a Sterling Flying Fool CL plane and wanted the motor to be a bit cartoon-ish,



Just stacked balsa, some screws and an old G-plug
Mar 08, 2015, 06:56 AM
Wanted for breaking Ohm's Law
Dennis Sumner's Avatar
Looks cool Andy.
Mar 08, 2015, 08:53 AM
AndyKunz's Avatar
Now you can see it in its new home. Anybody recognize the fuselage?

Andy
Mar 08, 2015, 10:18 AM
Registered User
Looks great. Thanks for sharing.
John
Mar 09, 2015, 09:38 AM
Registered User
how cool! Thanks for sharing, looks good.
Mar 10, 2015, 08:17 PM
AndyKunz's Avatar
More airframe shots (I'll be covering it Thursday night). This is 50g (1.7 oz) - quite a bit heavier than I would usually build, but it's more of a nostalgic model than a performer for me.

Any guesses on the airframe? One hint - it's built at 100% size of the original.

Andy
Mar 12, 2015, 08:38 AM
Surface, Air & Water Rc Toys..
freechip's Avatar
Watch out Hangar9, E-Flite, Parkzone & others. here comes the KunzModels. Putting the Lazer to good use I see.
Mar 12, 2015, 08:39 AM
AndyKunz's Avatar
Nope. Besides, most of those guys have one or the other model that I've cut.

Andy
Mar 12, 2015, 02:32 PM
Balsadustus Producerus
Almost looks like a Veco 'Papoose' controliner. But then you'd need a cylinder and head for a McCoy .098, and who'd do that?
Mar 12, 2015, 02:55 PM
AndyKunz's Avatar
You got the era right, but not the model. The original wing was 3/16" balsa with rounded LE and slightly tapered TE.

Andy
Mar 12, 2015, 04:11 PM
Registered User
portablevcb's Avatar
Don't know about the McCoy but I did an Ohlsson (.19 I think) for "Veco Joe" Wagner a few years ago. He wanted to convert one of his old planes to electric and he declared it would not look right without the engine up front. His little outrunner fit inside the crankcase.

I made two of them (the first wasn't quite right). Joe got the 'good' one. The other one ended up in a friend's old timer for the same reason.

charlie


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