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Cox Engine of The Month
May-2024
1/2A Nut's

"Cox Tee Dee .051 RC Marine"



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Ken Willard 'Page Boy' Empty Ken Willard 'Page Boy'

Post  Kim Tue Apr 05, 2016 9:28 pm

Don't know if I've posted this Ken Willard article/design before, but thought I'd go ahead, since we've been talking about smaller, close-in flying models.

While it's intended for a Tee Dee .010, it's sheet construction could probably be easily enlarged to take an .020.

Ken Willard 'Page Boy' 1_16

Ken Willard 'Page Boy' 2_17
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Post  xplaneguy Tue Apr 05, 2016 10:39 pm

Definitely, a bucket list build for me. Thanks Kim!
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Post  pkrankow Wed Apr 06, 2016 8:11 am

It is a cool build.  I used 6 oz fiberglass since Celastic is pretty hard to get.  Lighter would have been better, but this little strip of thick fiberglass is not excessively heavy.    I should have used the SIG 1.5 oz glass tape.  I set in Testors wood and metal cement instead of epoxy which did prevent more unnecessary weight.

I built for electric  3 channel,  but found the rudder too small as drawn.  I added 3/8 inch to the rudder, and enlarged the elevator to 3/4 inch.  The original motor I chose was a .049 equivalent, which has way too much torque.  I am switching to a brushed motor from indoor flyers.  The 5g servos I chose are also pretty heavy after adding in 2s battery RX mounting ESC...  I managed to score a AR6400 RX (which has been superseded AS6410) but have not completed the change over to the new kit.  I will be saving a lot of weight with the changes.  I hope to be below 100g when done.  I have not tested the new configuration.  

This RX will also be able to use 1s lipo power, and can be powered by a tiny postage stamp size 100mah battery.  For glow power this will be a long flight time, since this is 5-20 minutes with DC micro electric.

I decorated with sharpie markers and applied clear polyurethane.  I feel my finish is fairly lightweight, but maybe not as light as possible.  2 coats of clear dope probably weighs in a few grams lighter.  

The 148g I ended up at is overweight for this model.  I expect to be closer to 80g when done refitting.  Club members who built these years ago told me that my version is very heavy.

https://www.coxengineforum.com/t9262-pageboy-in-electric?highlight=pageboy
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Post  balogh Wed Apr 06, 2016 9:30 am

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Post  pkrankow Wed Apr 06, 2016 9:45 am

balogh wrote:https://www.coxengineforum.com/gallery/Personal-album-of-balogh/2011-11-19-1935411-pic_326.htm

Just to share my Gallery picture with this thread as well...

Any chance you can throw that on a scale and let me know what it weighs in at?

Phil
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Post  balogh Wed Apr 06, 2016 10:22 am

Sure thing Phil just wait until I hit home

András
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Post  balogh Wed Apr 06, 2016 12:12 pm

[/quote]

Any chance you can throw that on a scale and let me know what it weighs in at?

Phil[/quote]

Phil,

here is my Pageboy a bit disembowelled, waiting for an overhaul on its fuse coverage. The assembly weighs around 193 grams, say, 6,8 oz with the following parts included:

1. Fuse and wing complete with elevator, rudder and pushrod mechanisms
2. TD010 with stock 3x1,25 prop
3. two Hitech nano servos
4. one microswitch harness with battery charging lead
5. a 330mAH NiMH battery
6. a Futaba receiver

Ken Willard 'Page Boy' Pagebo10

I hope it helps.
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Post  pkrankow Wed Apr 06, 2016 12:53 pm

Well, that settles it. My problem was not due to weight. Balance maybe, I was having problems with keeping the nose up, and this should balance more like a free flight plane than anything else. I think I was having more problems from the large-ish rotating mass of the electric out-runner and too much prop. I did put a 5 inch prop on.

Phil
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