PIYURIN .010 * flight video *!! and now also .020...*flight video*

MauricioB Sun Mar 17, 2019 11:49 pm

Friends ... after my experience manufacturing the acceleration ring for my Cox .010, we have kindly shared experiences in the following thread; https://www.coxengineforum.com/t12700-acceleration-ring-cox-tee-dee-010
I have decided to manufacture a model for this Cox .010 rc.
I have chatted with Brad who has a lot of experience with his small models, so I drew some lines and finally I achieved this model.
The name ?? ...: Piyurin .010, this is a nickname that I sometimes use for some street dogs, that show a lot of affection, have great skills and are very friendly, simply, it is in short words a nickname that born of the affection of those small creatures that provide joy.
I await your opinions here! Smile

I hope you like this design ... here we go with the PIYURIN .010 !!

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balogh Mon Mar 18, 2019 4:56 am

Like always, this is a beautiful plane being born in your hands, Mauricio.

I see that all components, even the fuselage formers are made of balsa so the ready-to-fly weight will be low. Remember to fuel-proof the engine cowl area and the fuel tank compartment well, because these small planes easily get the unwanted, additional weight from castor soaking into the fuselage front. My Roaring 20 powered by a Tee Dee 010 weighs 190 grams now, and before I rebuilt the old one, that weighed near 240 grams because of the lack of sufficient fuel proofing.

Will you add any strengthening elements to the wing like a carbon strip embedded/glued in as a main spar? I would think of a 5x1 mm carbon strip that easily sinks into the wing top or bottom, without changing the airfoil profile.

Also, as a precautionary measure - if I cannot add a carbon strip or round carbon tube or bar to the leading edge - I often soak the balsa leading and trailing edges in thin CA glue so as to make them stiff enough to resist hard landings on high-grass/weed fields..though I saw that the field where you fly has a nicely manicured lawn so no need to worry about occasionally dented leading edges.

I am looking forward to seeing further details.

1/2A Nut Mon Mar 18, 2019 5:49 am

Looks great Mauricio Thumbs Up

What is the empty weight with engine?

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1/2A Nut Mon Mar 18, 2019 6:15 am

You can not have the ailerons so close to the fuselage if you are going to hold the wing down with rubber bands.
Needs a bit of distance away should the wing shift during landings if a wing tip catches the grass. The rubber bands
tend to drop into the gap. I like to use 1/64 thin ply to protect the wing from the rubber bands. Will help to keep
the balsa from crushing. Can use fiberglass strip something thin that does not show up so bad once you cover the
plane with shrink film / monokote. Plane needs to stay super low weight whatever you do. The size of the plane
only works well if you can keep it low weight. Max 3.5 oz. Can saturate the center section of the wing with thin epoxy
to help protect the balsa.

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MauricioB Mon Mar 18, 2019 10:29 am

Thanks Andras and Brad, I take your advice into account!
The weight of the model as well as this is 60 grs without cabin and 62 grs with cabin.
It has a DOPE hand on the fuselage to prevent the wood from absorbing fuel when the engine is running ...

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balogh Mon Mar 18, 2019 12:06 pm

Wov, this is really light. added an engine of 17 grams or so, plus fuel, battery, servos and receiver, you may end up below 130 grams all up weight?

MauricioB Mon Mar 18, 2019 3:41 pm

balogh wrote:Wov, this is really light. added an engine of 17 grams or so, plus fuel, battery, servos and receiver, you may end up below 130 grams all up weight?

Andras, the engine is included, do not take it off, that is, the weight that marks the scale includes the engine Cox .010 r / c.

balogh Mon Mar 18, 2019 4:06 pm

Thanks Mauricio, the engine was not visible on the pictures...then even more so, this is going to be a very light plane...

MauricioB Mon Mar 18, 2019 4:13 pm

balogh wrote:Thanks Mauricio, the engine was not visible on the pictures...then even more so, this is going to be a very light plane...

Of agreement friend, the motor + propeller + acceleration ring + rear plate in alloy, weighs 19 grs.

https://www.coxengineforum.com/t12700p25-acceleration-ring-cox-tee-dee-010#163342

That is to say that 62 grs - 19 grs = the model in wood alone and cabin weighs: 43 grs.

**Cribbs74** Mon Mar 18, 2019 7:43 pm

Pretty neat, looks like an off scale Spitfire

1/2A Nut Mon Mar 18, 2019 8:13 pm

Ok so you are at 2.19 oz less radio gear, fuel tank, covering and push rods.
Is this one getting a landing gear?

Some specs on my Tee Dee .010 projects:

1st. project: with landing gear
TD .010 Lil Speedy I
3ch / 4.8oz / 20" span
57 mph

TD .010 Lil Speedy II
3ch / 4.2oz RTF / 16.5"x4" span wing 66sq. in
62 mph

3rd project:
TD .010 Nano I
2ch / 3oz RTF / 18in span
130.4 mph

4th project:
TD .010 Nano II:
2ch / 2.2oz RTF / 15.5in span 28 Sq. In. wing.
118 mph

5th project ??

MauricioB Tue Mar 19, 2019 12:14 am

Cribbs74 wrote:Pretty neat, looks like an off scale Spitfire

If it's true ... I never made an elliptical wing, we'll see how it behaves!

MauricioB Tue Mar 19, 2019 12:16 am

1/2A Nut wrote:Ok so you are at 2.19 oz less radio gear, fuel tank, covering and push rods.
Is this one getting a landing gear?

Some specs on my Tee Dee .010 projects:

1st. project: with landing gear
TD .010 Lil Speedy I
3ch / 4.8oz / 20" span
57 mph

TD .010 Lil Speedy II
3ch / 4.2oz RTF / 16.5"x4" span wing 66sq. in
62 mph

3rd project:
TD .010 Nano I
2ch / 3oz RTF / 18in span
130.4 mph

4th project:
TD .010 Nano II:
2ch / 2.2oz RTF / 15.5in span 28 Sq. In. wing.
118 mph

5th project ??

All these data are very interesting ... thanks for sharing!

5th project ??
PIYURIN .010 Very Happy

1/2A Nut Tue Mar 19, 2019 12:55 am

5th project might be ply rolled fuselage similar to this drawing originally for the TD .049 to TD .09
I want to do something with rudder for acro. Perhaps something that can fly with the TD .010 and .020

PIYURIN .010 * flight video *!! and now also .020...*flight video* Templa10

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MauricioB Tue Mar 19, 2019 1:16 am

oh !!! ... I like Brad ... but there goes the Pee Wee .020 ... and then make relaxed flights! Very Happy

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balogh Tue Mar 19, 2019 1:28 am

Way to go Brad! My experience with my Skorch copied from your first Skorch with ply rolled fuselage was that the flyability depended very much on how accurately the ply fuselage with its wing saddle and horizontal stab saddle cutouts was rolled so as to make the wing and stab sit parallel..I am sure you guys (Mauricio included) can make it nice and accurate...mine, well, left something to desire after I finished the rolling on a pool cue.. Very Happy

but it is way stronger and even lighter with its curved skin than reinforced, rectangular cross sectioned balsa fuselages.

1/2A Nut Tue Mar 19, 2019 11:09 am

Thank you gents and for the thumbs up points Mauricio! St.Pats Beers

Yes something easy to fly and land. If with a Pee Wee case will be using a prototype backplate. Eyebrows

Will use a better NV and high flow intake Killer Pee Wee!

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MauricioB Sat Mar 23, 2019 11:02 am

1/2A Nut wrote:Thank you gents and for the thumbs up points Mauricio!

Yes something easy to fly and land. If with a Pee Wee case will be using a prototype backplate.
Will use a better NV and high flow intake Killer Pee Wee!

MauricioB Sat Mar 23, 2019 11:09 am

I've seen Brad, who, in a project, take advantage of the air flow to raise the pressure of the fuel tank and thereby optimize the operation of the engine ... well, here I am experiencing the same way. I have manufactured a venturi air collector, the same one that comes from the propeller and at the same time the air that the model takes in flight, we will see how it turns out!
Maybe I'll have to put a mesh or felt to avoid dirt ... but, for now it's on trial ...

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roddie Sat Mar 23, 2019 3:54 pm

Hi Mauricio! I like your Piyurin .010! I also like the names' meaning. Smile

The lightweight is amazing! My latest 1/2A "profile-fuse" U-Control design weighs 5.15oz. (147gr.). I still need to paint the model yet..

The air-collector looks good! A small piece (25mm square?) of ladies Nylon-stocking material might work well to filter the air. Attach with a small rubber-band.

getback Sun Mar 24, 2019 8:01 am

The air-collector looks good! A small piece (25mm square?) of ladies Nylon-stocking material might work well to filter the air. Attach with a small rubber-band. wrote:

This will not work , stocking are not that pories ( there to keep you warm) i found this out the hard way on a 125 Yamamama dirt bike (( made it flood )) The collector looks Good Friend ! This Site Rocks!

I see your putting the Lathe to work for you . RC Plane

MauricioB Sun Mar 24, 2019 1:03 pm

roddie wrote:Hi Mauricio! I like your Piyurin .010! I also like the names' meaning. The lightweight is amazing! My latest 1/2A "profile-fuse" U-Control design weighs 5.15oz. (147gr.). I still need to paint the model yet..

The air-collector looks good! A small piece (25mm square?) of ladies Nylon-stocking material might work well to filter the air. Attach with a small rubber-band.

Hello Roddie! ... Thank you very much for participating and leave your opinion here!...... we will see once finished when your total weight remains! Thumbs Up

MauricioB Sun Mar 24, 2019 1:06 pm

getback wrote: This will not work , stocking are not that pories ( there to keep you warm) i found this out the hard way on a 125 Yamamama dirt bike (( made it flood )) The collector looks Good Friend ! I see your putting the Lathe to work for you .

Hello Eric! Thanks to you also for leaving your opinion and advice.
I have to tell you that I do not understand very well what you want to say to me ... can you please clarify it to me ?, I am afraid that I am not interpreting your message correctly.
(You say the engine will drown?) ... I do not understand exactly ...

MauricioB Sun Mar 24, 2019 1:13 pm

I was thinking about how to make the maya or felt of the venturi that was responsible for taking air for the deposit and then remember: ...... a few days ago came the refrigeration technician to control my refrigerator, brought with it tools and accessories, a Once it was gone, clean the place and I find a piece on the floor ... I did not know what it was, so I decided to see what it was ... to my surprise it was a felt, probably for gas refrigeration, when I opened it I found that it has a very fine mesh type COX, and ohhhh !!!, there is the solution, I will take that mesh and with that I will build the felt of my venturi !!!.
I will visit the technician and ask him what that piece is and possibly I will buy him some more, so I have felt for my engines !!
Now you know ... here in this element you can also find a solution in your homes !! ... felt of cooling equipment! Very Happy

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1/2A Nut Sun Mar 24, 2019 8:53 pm

Lovely Mauricio Thumbs Up

Check out this vid the first 1/2A 3D printed plane just flew today!

https://www.thingiverse.com/make:618415

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PIYURIN .010 * flight video !! and now also .020...flight video*

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Re: PIYURIN .010 * flight video !! and now also .020...flight video*

Re: PIYURIN .010 * flight video !! and now also .020...flight video*

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