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Cox Engine of The Month
April-2024
OVERLORD's

"Kress ducted fan with new Cox Conquest 15 RC"



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Post  rdw777 Sun Jan 07, 2024 5:35 pm

My latest crazy project….Sure Fire Autogiro, By Roy Clough Jr. , 1948….For rubber power free flight….I built the rotor first to see if I could get it working….Already had some plastic props the right size from an old P-30 project…. Never built an AG before… Thought it might be fun to experiment with Very Happy

https://outerzone.co.uk/plan_details.asp?ID=6677

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Post  roddie Sun Jan 07, 2024 10:16 pm

I like that Robert!!! I started designing one for Cox .049 reed-valve/control-line called the "Rodd-O-Gyro".. but it's been on the stove's back-burner for the last few years.

Not too many people have posted about these.. so I am very interested in how yours works out! Popcorn

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Post  rdw777 Mon Jan 08, 2024 7:55 am

Thanks Roddie, We’ll see how it goes!!!….There’s and handful of control line Autogiro’s in OZ including a couple by the same designer of the one I’m building….. So they have have been popular at one time or other as well….. With your design skills I’m sure you could produce a very nice AG….Maybe your interest will rekindle?…..Would like to see what you’re thinking Very Happy
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Post  rdw777 Mon Jan 08, 2024 6:14 pm

Had a chance to work on it a little this afternoon…. I thought anything named
“Sure Fire” ought to have flames on it Thumbs Up

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Post  roddie Tue Jan 09, 2024 2:22 pm

Oh man... those flames look HOT!!! Cool Thumbs Up


rdw777 wrote:Thanks Roddie, We’ll see how it goes!!!….There’s and handful of control line Autogiro’s in OZ including a couple by the same designer of the one I’m building….. So they have have been popular at one time or other as well….. With your design skills I’m sure you could produce a very nice AG….Maybe your interest will rekindle?…..Would like to see what you’re thinking  Very Happy

The CEF thread-link to my design is in the RED text "Rodd-O-Gyro"
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Post  rdw777 Wed Jan 10, 2024 9:12 am

Thanks for pointing out the link Roddie, I missed it first time around Laughing…. Nice innovation on your AG!!….Great job on dreaming it up from scratch….  Lots of adjustments possible, Always a good thing on any model IMO….The video on Pg 3 shows how possible CL - AG’s can be…

Part of this experiment is using Duco cement thinned with acetone as a dope to seal and to apply the trim on the fuse….Seems to work just fine in this application …. however wouldn’t be fuel proof since it is nitrate based…,The rotor is just spray paint..

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Post  rdw777 Thu Jan 18, 2024 4:34 pm

First outing for the Sure Fire AG was a Backfire lol… Three short flights and rolls pretty strong to the right…. I think I have the rotor blade spars TOO floppy…. One of the photos shows how much that side was flexing (and loosing lift)…..Plus it was a little breezy… I’ll repair and stiffen the spars a little before next try…. The good thing about rubber power though, It’s cheap to experiment with…

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Post  Ken Cook Thu Jan 18, 2024 7:40 pm

Not free flight but control line. https://www.facebook.com/photo/?fbid=880251596397800&set=pcb.880251706397789

My buddy Dan has this Otto the Gyro powered with a Fox .35. Dan has relinquished this plane to dirt ball status. He wouldn't take no for a answer when told it couldn't stunt. The plane is now destroyed. It was certainly neat to watch.
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Post  getback Fri Jan 19, 2024 7:22 am

Hopefully you can get the turps figured out and out fling again soon , You got to love trial and error Laughing This Site Rocks!
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Post  rsv1cox Sat Jan 20, 2024 6:14 pm

First cousin Robert. Presently for sale on ebay.

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Post  MauricioB Sat Jan 20, 2024 8:47 pm

Roberto, what a good job, you always apply dedication and you are very neat. Your works are admirable.
I'm keeping an eye on the progress!
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Post  rdw777 Sun Jan 21, 2024 11:33 am

Thanks Fellas!!  Very Happy

First cousin Robert. Presently for sale on ebay.


A very close first cousin Bob !!  Very Happy

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Post  rsv1cox Mon Jan 22, 2024 3:05 pm

It looks like you masked it with tissue? Got to be tissue in there someplace. Smile

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Sending you the wings on my Spad diaster for a little TLC. Smile
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Post  rdw777 Tue Jan 23, 2024 8:15 am


It looks like you masked it with tissue? Got to be tissue in there someplace.


Yes Sir, You have me figured out!! LOL!!!…. Tissue trim works good for me on small models…. Cheap, light, and easily repairable….Steps on how I generally produce these…

A piece of tracing paper over the plan to draw the shape I want for side and top view…

Tissue folded in half (to produce two pieces mirror image if needed) and placed inside a folded newspaper …

The drawing is taped to the top of the folded newspaper/tissue stack….

Cut thru it all on a sheet of glass…. The glass preserves the knife’s tip…. The layers of newspaper prevent the knife from catching and tearing the tissue ….

The trim pieces are attached by flowing thinner thru them on the pre doped surface… A couple of thin coats of dope  on top to seal…

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Post  rsv1cox Tue Jan 23, 2024 2:36 pm

Involved process Robert, but the results are spectactular.
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Post  roddie Tue Jan 23, 2024 3:00 pm

Hi Robert, I continue to admire your craftsmanship. Best of luck with future flights! Thumbs Up
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