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"ULTIMITE COX 010: it has a clutch, E starter, throttle, exhaust, aluminum tank, aluminum venturi, gearbox with forward and reverse, and now its on a custom drawn and printed stand"



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Post  Tobaiies Sun Sep 10, 2023 3:39 pm

After I finally got a 010, I was able to test it successfully. However, the model felt a bit too slow for the high-revving engine.

So today I decided to build a speeder like I did for the 020.

A linear servo is installed as the elevator servo, there is no more room. At least nothing that was lying around. Smile.010 TeeDee Tiny Speeder Img_8016


I still have to make the linkages before the first flight can take place.
I'm a little worried whether the little thing will actually fly. Very Happy
.010 TeeDee Tiny Speeder Img_8011
.010 TeeDee Tiny Speeder Img_8017
.010 TeeDee Tiny Speeder Img_8013
.010 TeeDee Tiny Speeder Img_8014
.010 TeeDee Tiny Speeder Img_8015

I would be happy to receive name suggestions!

Does anyone have experience with other propellers for the 010?
The original ones appear more fragile than those for the larger engines. And maybe that would add a little more speed. Wink
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Post  1/2A Nut Sun Sep 10, 2023 10:24 pm

Nice to see you at it again with a TD .010 speed version, thank you for sharing  Thumbs Up

Hobby People - HP 4x4 E prop cut down makes for the best speed prop to date.
A custom carbon prop would be ideal for speed  2.6 x 5NN / 160 mph PS is possible.

130.4 mph per doppler achieved with a HP 2.56 x 4N
Prop pitch speed in the pass - PS 133 mph
.010 TeeDee Tiny Speeder Imag2910




Jun 6, 2016
NANO II - 2.7x3N Prop / 62.3g - 2.2oz RTF
Best pass this vid:  39,244 rpm  / 112 MPH
Best pass vid 3:  41.5k rpm / 118 MPH  
Static 31,815 rpm / 90 mph PS / 2.46 oz thrust
Engine run time 5 mins. 10sec / 7cc tank / 35% nitro
2ch plane / 15.5in span 28 Sq. In. airfoiled wing
2.2g RX 150 mAh 1S 3.7v / 2g servos
The 2.7x3 prop made good thrust for continuous
freight train speed in all directions. Cut down from
a E-flite 3.75 x 3

.010 TeeDee Tiny Speeder Imag3110

.010 TeeDee Tiny Speeder Amba0011




May 7, 2016
Prop 2.56 x 4N  / 30% Nitro:
Static 28,858 rpm / 109.3 mph / .028hp / 21w / 1.5oz thrust
Best pass 35,184 rpm / 133 mph audio tach / 130.4 mph per Doppler reading
2.8oz RTF / 2ch  RC micro race plane. Winds gusty to 14 mph.
Hobby People - HP 4x4 E prop modified for TD .010 speed.



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Last edited by 1/2A Nut on Mon Sep 11, 2023 6:07 am; edited 1 time in total
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Post  balogh Mon Sep 11, 2023 12:11 am

Beautiful  plane, Tobaiies. I guess it is your own design?

I had the same cold feet before maidening my Lil SpeeDee010 and it worked out so good that today  this is one of my go-to planes for fun flys..

And yes the stock COX props are indeed very fragile, especially the grey one which is also a tad heavier than the black one.

Can you please show what battery you have selected, and what brand the linear servo is?

Looking forward to your video.


Last edited by balogh on Mon Sep 11, 2023 7:14 am; edited 1 time in total (Reason for editing : typo correction)
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Post  rsv1cox Mon Sep 11, 2023 7:11 am

I love your work-shop pictures. Candyland for us model airplane guys.

Bob
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Post  getback Mon Sep 11, 2023 7:34 am

Check with own eyes Thumbs Up Popcorn
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Post  Tobaiies Tue Sep 12, 2023 3:04 pm

Thanks guys!
I'll see if I can get another propeller like that.

Its a similar design to the larger ones, pretty simple. The servo is from an Eflite UMX model, but I don't know which one exactly. The battery I use for testing is the same as usual, 1S 260mAh. The model has a wingspan of 40cm and weighs approx. 58g.
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Post  balogh Tue Sep 12, 2023 3:31 pm

Thanks Tobaiies, sorry but I am still not sure about your battery..a 1s Lithium battery provides only 3.7 Volts if I am not mistaken..is that enough for the servos and the receiver? The receiver and servos I use need higher voltage than that..
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Post  Tobaiies Tue Sep 12, 2023 3:47 pm

balogh wrote:Thanks Tobaiies, sorry but I am still not sure about your battery..a 1s Lithium battery provides only 3.7 Volts if I am not mistaken..is that enough for the servos and the receiver? The receiver and servos I use need higher voltage than that..
Exactly, the nominal voltage is 3.7 volts. Fully charged 4.2 volts. I think most LV servos work like this, of course not extremely fast, but it's not necessary Smile The receiver officially also works down to 3.7 volts. I also have telemetry through the receiver, so I can always keep an eye on the voltage. but also change it regularly.
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Post  1/2A Nut Wed Sep 13, 2023 6:21 am

Can use a stock HQ T3020 - 2P is better than 1.25P from the stock prop with good thrust.
3P gives a leap forward in speed over 1.25P / 4P will open a chance to create a record run.
Eflite 3.75x3 Propeller EFLUP037503 UM F-27Q Stryker Blade UM F-27 FPV can be bought still.

.010 TeeDee Tiny Speeder 20191140

.010 TeeDee Tiny Speeder 20211013

RTF less fuel:
.010 TeeDee Tiny Speeder Imag3213

.010 TeeDee Tiny Speeder Imag2813


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Post  Tobaiies Fri Sep 15, 2023 12:52 pm

I have now finished the linkage.
I adjusted the ailerons a bit and made them larger. The original ones were so thin that I couldn't fix the control horn properly
Had to change the aileron servo too... The cheap little one wasn't reset accurate at all.
Luckily I found one that fits exactly into the existing cutout, but it's extremely tight in the fuselage. Smile

.010 TeeDee Tiny Speeder 16589210

And thanks for the propeller recommendation, I found a dealer and ordered straight away. Looks great!
I plotted a few stickers too Wink
.010 TeeDee Tiny Speeder Img_8111
.010 TeeDee Tiny Speeder Img_8110
.010 TeeDee Tiny Speeder Img_8114
.010 TeeDee Tiny Speeder Img_8113

I maiden the model tomorrow, at least I hope so Smile
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Post  1/2A Nut Fri Sep 15, 2023 2:26 pm

Nice, look forward to seeing this one fly!

The HQ T3x2 will get you a nice jump in speed.
.75 extra pitch adds up at over 34k unloaded rpm.
Stock prop has gone 41,985 rpm unloaded down wind.

What is the all up weight less fuel? Popcorn

I found surface throws to be very minimal over 100mph
about 1.3 mm full deflection with outboard ailerons.
Elevator about 1.7 mm as I recall, absolute micro speed.


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Post  balogh Fri Sep 15, 2023 3:51 pm

1/2A Nut wrote:...........
The HQ T3x2 will get you a nice jump in speed.
.75 extra pitch adds up at over 34k unloaded rpm.
Stock prop has gone 41,985 rpm unloaded down wind.

...

Brad, what is the static rpm with the HQ 3x2 prop? Does the 2 inch pitch slow it down to below the 1.25 inch?

My other concern is the IC engine throwing the blade of electric props..I had my TD020 throw one of the 3 blades mid-air then the hub exploded and the whole prop was thrown...how does the HQ 3x2 prop tolerate the TD010 cyclic shaft load?
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Post  Tobaiies Fri Sep 15, 2023 4:26 pm

The RTF weight is now 59.6 grams. The new servo is about 2 grams heavier.

With the 020 I often fly a 4*3 propeller, it is very delicate and extremely thin. Sometimes I worry a bit, but the HQ 3*2 seems very robust.
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Post  balogh Fri Sep 15, 2023 4:38 pm

That weight is amazing..as is your bravery to fly on a 3.7V receiver battery.. Very Happy I have 170mAh NiMh batteries charged to about 5.5V and I am too shy to fly more than 3 runs each about 7-8 minutes long before I recharge it. I lost 1 or 2 planes due to low RX battery power in the past and it makes me super cautious
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Post  Tobaiies Sat Sep 16, 2023 1:47 am

I'm also pretty careful, I probably don't fly for longer than 10 minutes with one battery.
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Post  1/2A Nut Sat Sep 16, 2023 2:21 am

Weight / size is great it will be fast and challenging!
Will need to take some spare props or use the stock black prop to trim the plane
out, once you have sorted out the throws can then go faster with the 3x2


1S is the way to go with a proper 1S RX and servos for .010 speed. Very small gear / plane.
Takes some getting use to the required careful handling and operation. I have flown indoor the
2 Nano .010 speed projects I have done were quite a thrill and challenge using extreme small gear.

.010 TeeDee Tiny Speeder _010_10


I have flown with a 3x2 drone prop did very well for a mix of thrust / speed.
Just check them for stress at the hub after each landing. I tap threads in the
prop bore to insure best centering. The red color props looks good.

HQ T2.5 x 2 test shows the load is low with a throttle sleeve - bit less load than the stock prop.
The prop is not suitable for top speed - but held up well under static load and
looks proportionally good. Possible for very small low weight throttle projects.
Unloading to 43k is expected given the known data from 3x1.25 @42K



.010 TeeDee Tiny Speeder 20191141


Hobby People: HP 4x4 cut to 2.56 x 4
.010 TeeDee Tiny Speeder Imag3214



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Post  getback Sat Sep 16, 2023 5:55 am

Good job on the Tiny Speeder , I am sure with your skills there will bee a lot of fun with it . Good luck with the median RC Plane Popcorn Check with own eyes
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Post  Tobaiies Sat Sep 16, 2023 4:49 pm

So the first flight was successful!
The flight characteristics are surprisingly good, flying slowly is no problem. .010 TeeDee Tiny Speeder Img_8210

However, after the first flight I noticed that the tank was not tight. I recently ordered new seals and wanted to change them, but now I discovered that the plastic part has a hole or a crack.
.010 TeeDee Tiny Speeder Img_8211
Did someone already have this problem? Are these still available to buy somewhere, didn't find anything at Cox International.
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Post  balogh Sat Sep 16, 2023 5:57 pm

Good that you have maidened it, congrats! How did the 3x2 prop work out compared to the stock 3x1.25?

Too bad that the tank cover is damaged.Yes it cracks if the screw is overtightened. Some glues may work, but you'd better replace it.

Matt at Exmodelengines still has complete tanks:

http://www.exmodelengines.com/product.php?productid=17830&cat=250&page=1

Or you may try at Mecoa but they are not too responsive to non-US customers:

https://www.mecoa.biz/shopdisplayproducts.asp?id=36
Because of its limited volume that caters only for some 2 minutes or so runtime, I do not use the integral tank, but add an external tank made of small party balloons on my 010 size -and practically all , up to  09 size - planes.

The stock tank is abt 3 ccm in volume. I use an external  rubber balloon tank that carries up to 15 ccm fuel  on board. I like long flights. Very Happy
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Post  1/2A Nut Sat Sep 16, 2023 7:22 pm

Glad to hear the plane flew out it's trim flight, did you snag some vid?
The plane design does well with stable tracking, grooves along where it is pointed.

Can fabricate a backplate out of carbon plate or aluminum.
Can use epoxy and simply permanently seal it until a replacement tank assembly has arrived in the mail.
Crush or sawcut the old tank when its time to expose the crank case bolts.

Fresh plastic .010 backplate / tank plenty in stock: US $18.99

https://www.ebay.com/itm/COX-ENGINE-010-010-TD-Tee-Dee-Fuel-Tank-complete-from-MECOA-K-B-69-c0103-/274223869632?_ul=IL

.010 TeeDee Tiny Speeder S-l50019


Hobby People Micro Tiger Moth HP 4x4 replacement prop / 2.6x4N for speed.

.010 TeeDee Tiny Speeder Hobby_10






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Post  Tobaiies Sun Sep 17, 2023 4:18 am

Thank you! I will order this tank…. Does anyone have the Cox International aluminum tank?
I have now made a back plate out of carbon fiber.
.010 TeeDee Tiny Speeder Img_8212
I hope I can fly again today, I made a video of the first flight yesterday and will upload the video to YouTube this evening. Maybe something will be added from today. In the short time that the engine was revving up, the HQ 3*2 made a good impression!
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Post  1/2A Nut Sun Sep 17, 2023 6:00 am

Ok great, look forward to seeing the project fly.
Carbon backplate looks good, thickness is suitable no apparent flex from the mounting screw.

I have the aluminum .010 tank tested,
For my use it is too heavy / bulky for all out speed with wide mounted side tabs.
Requires a larger firewall creating too much drag given the tested level of speed
obtained with 2P, 3P and 4P props to date with the 2 Nano plane versions.


.010 aluminum tank tested with a Gemfan Carbon 3x3 prop,
great robust tank for bench testing props and flying sport projects.

3030 carbon prop is stiff and does not cause prop oscillation aka rpm loss.  
The top of the leading edge was reworked via fine files and sandpaper to create
faster airspeed over the top of the blade.



Testing new CNC fuel tank Carbon 3x3 Prop / Best Noted Peak 33,107 rpm
More typical 32k rpm / 91 mph pitch speed / 3.6oz thrust
.058hp / 43.3w / tank duration 2.57 mins. due to 35% nitro / 20% oil.

.010 TeeDee Tiny Speeder Imag7727

.010 TeeDee Tiny Speeder Imag7729

.010 TeeDee Tiny Speeder Imag7728


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.010 TeeDee Tiny Speeder Empty Short video from maiden.

Post  Tobaiies Mon Sep 18, 2023 6:55 am

Yesterday morning I didn't have time to get the Lil Fury ready. I flew larger models because it was one of the last nice days.
So just the video of the first flight. The engine wasn't running perfectly yet and, as you can see, I had to trim it first.
The tank is now sealed and remounted on the model.
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Post  balogh Mon Sep 18, 2023 7:43 am

Congratulations..

Thanks to its slender low-drag design and light weight, your plane is already very fast even with the air/fuel mixture  a bit on the rich side, and I expect this will be a ball to fly when the needle valve is well set.

Unfortunately the carb body of all 010-s is pure aluminum with no steel insert (unlike e.g.  the 049 TeeDee-s), so the aluminum valve threads tend to quickly wear loose due to engine vibration, inadvertantly self-set the NV position mid-air, and allow false air to enter the carb. (The 020 TeeDee is the same and I am facing air leakage and NV setting issues with one of my 020-s)

As a precaution, I add the silicon tube to the NV even for brand new 010 engines and carburetors, to help set and  stabilize the peak rpm ..

.010 TeeDee Tiny Speeder 20230616
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Post  1/2A Nut Mon Sep 18, 2023 9:33 am

Nice, the lower power rpm allowed a trim flight without it becoming a handful!
Happy to see the glide ratio is on par with the design attributes. You are on the cusp of true micro IC
speed far beyond the typical RC projects with the 3x1.25 prop! Even with low rpm it was cutting through
the air with little effort. Yes on the fuel tube fix for the needle valve and good to hear the plane is ready.


Thank you for sharing!  RC Plane

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