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More Engine Assembling/Testing. The second Tee Dee tank/mount arrives. Babe_b10
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"Pee Wee .020 throttled combinated"



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Post  Kim on Sun Nov 10, 2019 11:44 am

So, a nice morning out in the shop. Got the parts for the Skylark's second engine from Bernie yesterday, and used today's "coffee high" to assemble the Tee Dee.

Got in a couple good test runs...no leaks, and all the parts seem to be getting along with each other.

Now, unless I again change my mind, the engines for the Skylark are chosen, tested, and ready to boost it up through the ether!!!!!!

Back to balsa chopping!

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Post  1/2A Nut on Sun Nov 10, 2019 7:08 pm

Kim this engine is way to sexy not to have a matching twin
I vote you cough up another red tank and red aluminum carb body.

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Post  Kim on Sun Nov 10, 2019 7:51 pm

1/2A Nut wrote:Kim this engine is way to sexy not to have a matching twin
I vote you cough up another red tank and red aluminum carb body.

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Post  1/2A Nut on Sun Nov 10, 2019 9:39 pm

Lol Kim well done you can rest easy now!

There are bare aluminum ones for the silver tanks.
I am sure you can find a nice project for it.

https://www.ebay.com/itm/Cox-020-Tee-Dee-Model-Airplane-Engine-Aluminum-Carb-Carburetor-Body-020-Silver/392076738713?hash=item5b49984099:g:5BgAAOSw56pbO~cM

Gives you this look.
I want to use mine with this brushed aluminum covering for
a vintage civil sport mono plane.

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Post  Kim on Mon Nov 11, 2019 8:04 am

COOLO!!!!!!!!!

I've been meaning to ask (and sorry if this has been covered)...do you make your own .010 & .020 props? If not, where do you get them?









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Post  1/2A Nut on Mon Nov 11, 2019 7:17 pm

The Cox props are safe to use great for the kids but
do not provide enough performance for my taste.

Cox black rubber props are hard to mod other then
clip their tips. I prefer back cut and reshaping the
airfoil's trailing edge.

APC props are easy to mod but limited to mainly
the .049 engines and up.

The APC 4.2x2 is suitable to mod to a narrow blade
leaving the dia. at or near the same to gain rpm and
increases thrust.

Even after mods most props for the .020 are too robust
and weigh too much putting load on the ball socket
stealing precious rpm.

The best prop with no mods gave me 92 mph with a sporty
plane with throttle. With a 4.8 oz plane unlimited vertical.
This prop is not for kids, not for spring starters requires
starting with a 1/2A starter. Has never broke under use
has never warped from use. Over 160 ish flights with
various projects. Requires you oil it prior to use or the
raw fuel during fill up can take the gloss finish off the
surface. Just a thin oil film is enough to project the
surface. I just rub some spent castor oil on the blades.
Note the brushless motor spins this prop up past 34k
with no issues foam ARF flying wing.


Static 3.75x3 / 22,790 rpm / 65 mph / 5.3oz thrust / 37w
TD .020 / 3.75x3 / 31,257 rpm / 92 mph / Vertical on the prop  Lil Speedy 5.2oz RTF
More Engine Assembling/Testing. The second Tee Dee tank/mount arrives. S-l16032

https://www.ebay.com/itm/E-flite-3-75x3-Prop-UM-F-27FPV-Q-EFLUP037503/332792731271?epid=1900122470&hash=item4d7bfe1687:g:tFYAAOSw1SJbjo2E

Requires this spinner for pucker factor
https://www.ebay.com/itm/Custom-Cox-Tee-Dee-020-0-33cc-Spinner-and-stud-Cox-Model-Engine/372827773637?hash=item56ce445ac5:g:n6kAAOSwm6xdv5Xa




Best prop for the TD .010 provides more thrust and speed than a
rubber 3 x 1.25 the pitch is 2" so tracks faster in a head wind.

The best prop tested thus far is not for kids 3x2 drone prop
Can yield vertical performance crisp loops it will fly the plane
with authority providing all up weight is max 3.8oz. Never had
the prop break under use. Yes the extra holes suck till covered
up with a Valentine bullet spinner.  Very Happy
https://www.ebay.com/itm/Custom-Cox-Tee-Dee-010-0-16cc-Spinner-and-stud-Cox-Model-Engine/264521272810?hash=item3d96b24dea:g:8F4AAOSwBXldv5WO
I use a tap and thread the 1mm bore to the correct size for perfect centering low vibrations.
http://www.helipal.com/dal-3020-2-blade-propeller-black-4ccw-4cw.html

Static: 26,647 rpm 3x2 prop / 2.6oz thrust / 51 mph pitch speed.
Best pass: 33,941 rpm / 64 mph / sport plane in size for the .010 / 4.7oz RTF
More Engine Assembling/Testing. The second Tee Dee tank/mount arrives. Dal-3010

Today I bought this drone prop in orange, purple looks good too.
If it pans out will buy some spare purples. Also note there is the
3x3 should you have something low weight and skinny for faster
flying on windy days. These have a much wider cord proportions
are not as good as black 3020 but these you can back cut and
thus make a 3x2N to bring the rpm up to 36k in the air.

Shown 3020  they also have 3030  and a 2530

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