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Cox Engine of The Month
February-2019
balogh's

"Black Lynx .049 with a Throttle, Exhaust Deflector and Nelson-Galbreath head set"



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The twins strike again!

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The twins strike again!

Post  Oldenginerod on Thu Oct 12, 2017 7:51 pm

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Re: The twins strike again!

Post  MauricioB on Fri Oct 13, 2017 4:28 am


They seem to be OK (USA) engine cylinders, right?
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Re: The twins strike again!

Post  Oldenginerod on Fri Oct 13, 2017 6:01 am

Yes Mauricio. OK Cub .049 cylinders. I have seen this done with Cox parts before but never with OK Cub parts. It seems that the engine is built correctly to run, whereas many that we see on ebay are not able to run.

Rod.
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Re: The twins strike again!

Post  MauricioB on Fri Oct 13, 2017 7:23 am

Oldenginerod wrote:Yes Mauricio.  OK Cub .049 cylinders.  I have seen this done with Cox parts before but never with OK Cub parts.  It seems that the engine is built correctly to run, whereas many that we see on ebay are not able to run.

Rod.

If it's true Rod, it seems that this works, it would be great if there was a video, even help the seller.
I have an OK, I give it to a friend, it is an engine with very little use, but I have no manual, what is the ideal fuel for this engine? Do you know?


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Re: The twins strike again!

Post  Oldenginerod on Fri Oct 13, 2017 5:09 pm

The best fuel would be the same as for your Cox engines. It should include castor oil and no more than 35% nitro. If you try to run the engine with more nitro something may break. My opinion on ideal fuel for these engines is, 20% oil (1/2 castor) and 15% nitro. Don't load the engine up too much. The needle valves on OK engines are very blunt so are difficult to adjust accurately. Extra nitro may help stabilize the adjustment.
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Re: The twins strike again!

Post  MauricioB on Fri Oct 13, 2017 10:30 pm

Oldenginerod wrote:The best fuel would be the same as for your Cox engines.  It should include castor oil and no more than 35% nitro.  If you try to run the engine with more nitro something may break.  My opinion on ideal fuel for these engines is, 20% oil (1/2 castor) and 15% nitro.  Don't load the engine up too much.  The needle valves on OK engines are very blunt so are difficult to adjust accurately.  Extra nitro may help stabilize the adjustment.

Thank you very much for the information, when I march you promise to show the operation! Thumbs Up
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Re: The twins strike again!

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