Acceleration ring Cox Tee Dee .010

Looks good , you must have used your lathe? What is the finished diameter?

Are you going with a steel ring? It would be best less expansion / leaks.

This TD .010 was the first successful throttled cylinder
It has over 60 flights / bench tests. Cox wrench tighten
at via the glow plug works fine. There should be no reason
to take it apart over an over to the point of digging into
the case. If so would a bit of compression may have to add
a extra head shim. Must be gentle with the wee micro .010

If you make steel rings with throttle clips folks would buy them.
Simple two steel halves split in the middle at the sleeves exhaust ports
retained by a throttle clip. As you throttle down the splits will not leak.
Or thick walled aluminum / split with clip to retain the two halves.
Best all you could dream of would be throttle carb and exhaust manifold / header.









COX TEE DEE .010 RC ENGINE DE HAVILLAND DH80A

Yes Mauricio it is how I felt when my 3rd TD .010 throttle sleeve finally started functioning as planed.
I did not have to make a secondary sleeve, at TDC SPI is fine. Cylinder diameter is 0.322"

Many hours spent developing a usable throttle sleeve / designing and building a plane for the day I could fly a .010 RC plane.
Here is the entire plight to flight!

1st throttle sleeve design no flange just an aluminum sleeve.


Uploaded on May 4, 2014
1st sleeve 20k to 24.2k

Made a 2nd sleeve to test smaller exhaust ports:

Published on May 4, 2014
Down to around 14k with this effort.

3rd generation sleeve tested:

Published on May 7, 2014
Cox TD .010 Throttle Sleeve 3rd Gen Sleeve Test, note I had it set for 3 blade so will have to divide by 3
and times by 2. Was in the 11.8k range.

My design / build Lil Speedy I

Published on May 16, 2014
Maiden flight with the throttled TD .010
1st / 2nd and 3rd flights of a new design for the TD .010
Unedited to document the experience of what it takes to fly
the new plane and run the engine.

Upgraded to the TD .020 with throttle:1080P vid;

Published on Jul 12, 2014
TD .020 3ch Lil Speedy
21in span exhaust throttle sleeve, flying with a Cox 4 x 2.5 prop.
10cc tank / With fuel RTF  5.3oz / 25% nitro 18% castor
Static 17,603 rpm / Best pass unloaded 25,579 rpm / 61 mph.

Well done Mauricio  
If you can source the 3x2 drone props they make good thrust and more speed
than stock props.



Published on Feb 11, 2016

Static: 26,647 rpm 3x2 prop / 51 mph /2.7oz thrust

These props are tough more so than they look not as strong as stock.

The carbon 3x3 are good too TD .010 bullet spinner centers very well adds rpm!




Published on Jun 23, 2018

Cox TD .010 / 3x3 Prop / Best Peak 33,107 rpm / 94 mph
Testing new CNC fuel tank Carbon 3x3 Prop / Best Peak 33,107 rpm
More typical 32,138 rpm / 91 mph pitch speed / 3.6oz thrust
.058hp / 43.3w / tank duration 2.57 mins. due to 35% nitro / 20% oil.

 Looks good Mauricio ready to go!!!!!   

Are you going to use it in your existing .010 plane or put in in a new project?
What about a speed plane? How much does it weight as shown?

Check out the size difference to the TD .15 with throttle sleeve!
Do you have any .15's? This one as shown weighs 5.15 oz or 146g!

What a beast!  

MauricioB wrote:András ... are you out there ?? ... are you going to make a new video with the Pet? System, it would be interesting to have data of all possible forms of motor control Cox Tee Dee .010

On the other hand, I suppose, I think, that the system that I attached here below in the photo, should not be really effective, I do not think ... but I have not seen any working on the Internet, much less personally to ensure my thinking. ..someone have it in recorded video please?

Hi Mauricio..I am following this thread and shot a video today but due to insufficient natural light in my garage the tachometer did not work well. I will repeat the test later when weather and light conditions are better.