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Cox Engine of The Month
February-2019
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"Black Lynx .049 with a Throttle, Exhaust Deflector and Nelson-Galbreath head set"



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Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

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Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 12:09 am

Well, I finally decided .... I like many models that are on the web and I like to build them ... I was hanging around until finally I decided to make something.
I like 0.010, 0.020, 0.049, 0.051 .... mmmm all Very Happy  Very Happy  Very Happy ! And then I go for a model that can use one of these engines and changing the centering, it will be possible to replace the engine and place another and give me the pleasure to use one and another ..within 0.049 / 0.051.... well.
I am choosing some parts of the Dee Bee, stabilizer, rudder and profile and I started to draw a simple fuselage but at the same time I was nice.
Here I leave some photos of the beginning ...... let's see what results from all this !? RC Plane




Last edited by MauricioB on Wed Aug 30, 2017 1:07 pm; edited 3 times in total
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 3:48 pm

This time I decided to make a wing in foam plated in raft.
About 20 years ago, it manufactures an adjustable source with a nicron arc, precisely to cut telgopor - foam.
Then start the templates to squared the foam and cut the wings ....









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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 3:51 pm

Made the measurements and already squaring the piece of foam, start to cut by the lines, the back of the cut are those pieces squares embedded in the foam ....






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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 3:56 pm

With already cut squared blocks, I put the insoles with the profile of the wing ...



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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 3:58 pm

Once the profile is cut, I change the rib template, by a straight cut template, this is to accommodate the leading edge and the trailing edge ....


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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 3:59 pm

And ready the core of the wing in foam ... ready to veneer ...

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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 4:03 pm

I prepare several sheets of balsa wood 1 mm thick, joining them together to cover the surface of the wings ...


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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 4:08 pm

I make a sandwich between foam bed, absorbent paper, balsa wood, glue, foam core, again glue, raft wood, absorbent paper, foam bed ....





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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 4:11 pm

Finally a few magazines will make enough weight to hold the firm sandwich waiting for the glue to cure - dry!


To be continued.....
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  batjac on Wed Jun 21, 2017 8:05 pm

Great looking model, Mauricio. You have much more patience in me. I'm looking forward to the result.

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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  roddie on Wed Jun 21, 2017 8:15 pm

Very nice work Mauricio! I wish I had your drive and patience. I'm sure that another excellent flying model will come from your efforts!
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 11:45 pm

batjac wrote:Great looking model, Mauricio.  You have much more patience in me.  I'm looking forward to the result.

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Thank you! A pleasure to share with you! Very Happy Thumbs Up
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 11:48 pm

roddie wrote:Very nice work Mauricio! I wish I had your drive and patience. I'm sure that another excellent flying model will come from your efforts!

Thanks !, Roddie .... it is possible that in your new workshop you will want to build ....
By the way, you have a beautiful place to have a few beers and kick off a few engines and enjoy nature !! Very Happy
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 11:51 pm

And .... after 24 hours of pressing ...





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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 11:55 pm

Then checking that everything is perfectly glued and straight, .... time to brush and sand: Attack edge, trailing edge and marginal edges...







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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Wed Jun 21, 2017 11:57 pm

Then waiting to place leading edge and trailing edge .....

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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  OVERLORD on Thu Jun 22, 2017 12:42 am

Great job!! I've never done that hot wire thing but you seem to get along well with that. very cool.
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  Surfer_kris on Thu Jun 22, 2017 1:53 am

The wing looks great so far.
Is there any particular reason for using white glue instead of epoxy?
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  micro 0951 on Thu Jun 22, 2017 3:34 am

Beautiful work....What foam did you use for the cores? High density styrofoam?
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Thu Jun 22, 2017 6:41 am

OVERLORD wrote:Great job!! I've never done that hot wire thing but you seem to get along well with that. very cool.

Thank you! ... you have to try the ideal temperature point of the wire and then it comes to practice. Smile
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Thu Jun 22, 2017 6:48 am

Surfer_kris wrote:The wing looks great so far.
Is there any particular reason for using white glue instead of epoxy?

Thank you! ... Yes, the use of glue "carpenter's glue" instead of epoxy has many advantages, it is very easy to apply, and when the curing begins, it begins to evaporate the excess, leaving only the necessary between the parts to paste , Is extremely strong and while you do the work you have time to move as many times as you need until you are sure of the correct location of the parts.
If you use epoxy, all the material you put there, will remain and will not evaporate, therefore generating an extra weight.
Make me friend that the carpenter's tail is an extraordinary and old glue checked its result.
The epoxy glue used only to glue the center of wings, to "fill even some extra pore between the parts.
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Thu Jun 22, 2017 6:54 am

micro 0951 wrote:Beautiful work....What foam did you use for the cores? High density styrofoam?

Many thanks !, the foam here known as telgopor, the one I am using is medium density.
According to the merchant these are the characteristics:
Low density (common) = 11 kg / m3
Medium density = 20 kg / m3 (this is the one I am using in this work) Thumbs Up

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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  getback on Thu Jun 22, 2017 7:51 am

Very Nicely done my friend , i take it you're making two models not just one maybe your friend needs a fling friend . The foam cutter does a good clean job and as always you make it look easy ! Thank You for sharing Very Happy Popcorn
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Thu Jun 22, 2017 8:45 am

getback wrote:Very Nicely done my friend , i take it you're making two models not just one maybe your friend needs a fling friend . The foam cutter does a good clean job and as always you make it look easy ! Thank You for sharing Very Happy  Popcorn

Eric, my friend !, thanks for your message ... that's right, I'm doing two models simultaneously, I have some engines that I would like to use, and I really like these small models, I enjoy doing them - building, flying and observing them as a collector's piece , As the years pass each one of these pieces will bring me memories and that makes me well !.
It is a pleasure for me to share with you my friend and with CEF friends! Beer Cheers
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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

Post  MauricioB on Thu Jun 22, 2017 8:49 am

Here it is at 10.45 am in the morning and just place the trailing edge and attack edges on each wing, now to wait for the drying. Although in an hour the glue (carpenter's glue) already makes a previous cure, I like to let stand for 24 hours, ensuring an extremely strong bond...
Cutting edge (leading and trailing edge):




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Re: Idea of a model for Cox Tee Dee 0.051 and ...Medallion 0.049!Flight

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