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Cox Engine of The Month
July-2024
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"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"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
robot797's
![](https://i.servimg.com/u/f95/15/46/86/41/3_robo10.jpg)
"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"
![](https://i.servimg.com/u/f95/15/46/86/41/sponso12.png)
PAST WINNERS
Back to Control Line
Page 1 of 1
Back to Control Line
Many years ago I flew CL models, even my first motor was a TD. But now after 29 years I came back to CL and discovered that I love speed, so I started to investigate on the web how to obtain more RPM and more speed in my racer design.
Today I got the 22, 200 RPM with the Cox TD .051 and a 4X4 prop.
Cheers
![Back to Control Line 14575110](https://i.servimg.com/u/f49/20/30/67/24/14575110.jpg)
![Back to Control Line 14580310](https://i.servimg.com/u/f49/20/30/67/24/14580310.jpg)
![Back to Control Line 14585010](https://i.servimg.com/u/f49/20/30/67/24/14585010.jpg)
Today I got the 22, 200 RPM with the Cox TD .051 and a 4X4 prop.
Cheers
![Back to Control Line 14575110](https://i.servimg.com/u/f49/20/30/67/24/14575110.jpg)
![Back to Control Line 14580310](https://i.servimg.com/u/f49/20/30/67/24/14580310.jpg)
![Back to Control Line 14585010](https://i.servimg.com/u/f49/20/30/67/24/14585010.jpg)
Alfredo Rubio- Moderate Poster
- Posts : 20
Join date : 2020-10-01
Re: Back to Control Line
Nice, have you done anything special to the engine? There are several ways to get some high revs out of the TD.
Ron
Ron
Cribbs74- Moderator
Posts : 11904
Join date : 2011-10-24
Age : 50
Location : Tuttle, OK
Re: Back to Control Line
Very Nice , Like the forward wing design >> You got any Videos you can share , love to see it doing its thing .
![Very Happy](https://2img.net/i/fa/i/smiles/icon_biggrin.png)
getback- Top Poster
Posts : 10276
Join date : 2013-01-18
Age : 66
Location : julian , NC
Re: Back to Control Line
Awesome, goes against convention. Me too on Eric's request!!!!
rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Back to Control Line
I glad you like it, this is the video of first flights, the burst came in last seconds of flight.
https://youtu.be/pYcuDY9af2I
https://youtu.be/pYcuDY9af2I
Alfredo Rubio- Moderate Poster
- Posts : 20
Join date : 2020-10-01
Re: Back to Control Line
This is the motor and plane that I start to learn about high perfonrmance in speed flights. The video is the first stage of flights, with a Tornado 5 1/4 x 4 prop. The spray bar is from ACE that works great.
Alfredo Rubio- Moderate Poster
- Posts : 20
Join date : 2020-10-01
Re: Back to Control Line
Thank you for sharing the vid well done!
Some comparison results:
Tee Dee .049 / Kamtechnik Turbo Plug Adapter / APC 4.2x4
23,498 rpm / 7.8oz thrust / .120 hp - 89w / 90 mph pitch speed
OS RP7 / 2 head gaskets / 15% nitro / ACE NV / Throttle sleeve
SPI / stock venturi.
Update 1 head gasket 24,386 rpm full NV peak.
![Thumbs Up](/users/3015/29/34/60/smiles/1541798026.gif)
Some comparison results:
Tee Dee .049 / Kamtechnik Turbo Plug Adapter / APC 4.2x4
23,498 rpm / 7.8oz thrust / .120 hp - 89w / 90 mph pitch speed
OS RP7 / 2 head gaskets / 15% nitro / ACE NV / Throttle sleeve
SPI / stock venturi.
Update 1 head gasket 24,386 rpm full NV peak.
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
![Thumbs Up](/users/3015/29/34/60/smiles/1541798026.gif)
Last edited by 1/2A Nut on Tue Feb 09, 2021 1:42 pm; edited 1 time in total
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 60
Location : Brad in Texas
Re: Back to Control Line
Alfredo Rubio wrote:I glad you like it, this is the video of first flights, the burst came in last seconds of flight.
https://youtu.be/pYcuDY9af2I
Nice job, leaned out at the end really spun you around a bit. Which model was it?
rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Back to Control Line
Cool ! she did lean out good when the fuel got low , what line length are you using ?
![Small Cox Logo](/users/3015/29/34/60/smiles/7356.png)
getback- Top Poster
Posts : 10276
Join date : 2013-01-18
Age : 66
Location : julian , NC
Re: Back to Control Line
1/2A Nut wrote:Thank you for sharing the vid well done!![]()
Some comparison results:
Tee Dee .049 / Kamtechnik Turbo Plug Adapter / APC 4.2x4
23,498 rpm / 7.8oz thrust / .120 hp - 89w / 90 mph pitch speed
OS RP7 / 2 head gaskets / 15% nitro / ACE NV / Throttle sleeve
SPI / stock venturi.
Update 1 head gasket 24,386 rpm full NV peak.
![]()
![]()
Thanks!! I saw your videos in Youtube and learned some tips
Alfredo Rubio- Moderate Poster
- Posts : 20
Join date : 2020-10-01
Re: Back to Control Line
rsv1cox wrote:Alfredo Rubio wrote:I glad you like it, this is the video of first flights, the burst came in last seconds of flight.
https://youtu.be/pYcuDY9af2I
Nice job, leaned out at the end really spun you around a bit. Which model was it?
Thanks I glad you like it. This is my own design, I named AV-1 in Memory of my smaller son that pased away almost 2 years ago.
Alfredo Rubio- Moderate Poster
- Posts : 20
Join date : 2020-10-01
Re: Back to Control Line
getback wrote:Cool ! she did lean out good when the fuel got low , what line length are you using ?![]()
I use .008 lines 10 metters lenght.
Alfredo Rubio- Moderate Poster
- Posts : 20
Join date : 2020-10-01
Re: Back to Control Line
Alfredo Rubio wrote:rsv1cox wrote:Alfredo Rubio wrote:I glad you like it, this is the video of first flights, the burst came in last seconds of flight.
https://youtu.be/pYcuDY9af2I
Nice job, leaned out at the end really spun you around a bit. Which model was it?
Thanks I glad you like it. This is my own design, I named AV-1 in Memory of my smaller son that pased away almost 2 years ago.
I share your pain, my wife and I lost a baby boy in infancy. Painful, and you have my condolences.
Bob
rsv1cox- Top Poster
Posts : 10851
Join date : 2014-08-18
Location : West Virginia
Re: Back to Control Line
If you want speed you need to wind it up and back off just a tad 1/4 turn? or less if you use the search under reed speed or just speed you will get alot to look at LOL https://www.coxengineforum.com/t8828-reed-speed-2016-qualifying-photos?highlight=reed+speed I got a flight in at page 5 >> https://www.coxengineforum.com/t12305p100-2018-to-2019-cef-run-what-ya-brung-unlimited-speed-contes-closed?highlight=reed++td+speed the last contest we had there are others Fun and Fall Down time
we got prizes tooo !!
![lol!](https://2img.net/i/fa/i/smiles/lol.gif)
![I Love This Forum!](/users/3015/29/34/60/smiles/1901776121.gif)
getback- Top Poster
Posts : 10276
Join date : 2013-01-18
Age : 66
Location : julian , NC
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