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Cox Engine of The Month
March-2024
balogh's

"COX Budapest" .049 engine



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Post  czarobest Wed Sep 25, 2019 7:06 am

Hi,
I'd like to show you the movie I made today from staring my first Cox engine - Tee Dee .051
I've renovated the engine a I've little cleaned. I made a needle spring from the office clip. In the previous film it was from a can Smile but it didn't work out and the needle was unscrewing. As a result, I couldn't adjust the engine properly and it only reached 17,000 RPM. Plus, I fired it with 5% nitro fuel.

Now on better test stand, with 20% nitro fuel and a new "spring", it reaches out 21 000 RPM (0.117 HP 86W) Very Happy

You can view all photos from renovation in this album https://flic.kr/s/aHsmvTLKXz  Wink

The video from today:

My TeeDee .051 45804412
My TeeDee .051 45804411
My TeeDee .051 45804410
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Post  balogh Wed Sep 25, 2019 7:46 am

As an alternate to the spring tab, you may also pull a silicon tube over the golden carb nipple and the stem of needle valve, that will not only withhold it from resetting itself during engine run, but also seal against possible air in-leakage that often plagues TD-s after some extended time of operation.
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Post  czarobest Wed Sep 25, 2019 8:03 am

Thank but when I bought this engine, it was as you propose. But I wanted it to be closer to the orginal and I did as it is Very Happy
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Post  getback Wed Sep 25, 2019 9:49 am

Good to see you took it all the way down for a thorough cleaning Very Happy
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Post  Levent Suberk Wed Sep 25, 2019 10:05 am

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Post  czarobest Wed Sep 25, 2019 10:14 am

When I got the engine,  washer wasn't there. But thrust washer is currently mounted. Though you can't see it in the pictures Smile.
But thanks for noticing Smile
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Post  Jerry Tue Mar 21, 2023 9:53 am

What is the base needle valve setting to start this one please.
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Post  balogh Tue Mar 21, 2023 10:00 am

4.5 turns..but go to "Instruction sheets" on the left of this page, and in the table top section you will find a full manual for the TeeDee051 that is downloadable..
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Post  Jerry Wed Mar 22, 2023 2:51 pm

I couldn’t find the instructions in the table top… it seems I’m not the only one😵💫
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Post  Levent Suberk Wed Mar 22, 2023 3:37 pm

Jerry wrote:I couldn’t find the instructions in the table top… it seems I’m not the only one😵💫

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Post  944_Jim Wed Mar 22, 2023 8:56 pm

Click where Levent shows.

Then look at the top of the table, under engines...not the table top. Someone must have been thinking "dinner." Laughing

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Post  balogh Wed Mar 22, 2023 10:29 pm

By wanting to help this fellow CEF member, I was the one who wrote "table top section"....not table top, but sorry for my Hunglish, my apologies for my dumb self wanting to help .. I thought that labourosly though, but it was decipherable for native speakers...my very old school breeding often drives me to say a shy "thank you", when I am the one who gets help, I hope this is not another strange expression that I need to explain further, but if in doubts, one may refer to letter "t" in the Concise  Dictionary of Contemporary English to look it up, for a more authentic lingustic interpretation and use of this term of gratitude, than mine, if his likewise old school breeding  gives him any motive to use this expression at all.. Very Happy
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Post  Jerry Thu Mar 23, 2023 8:12 pm

Success! Thanks for your help🖖
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Post  layback209 Thu Mar 23, 2023 10:26 pm

Awesome, she is really singing great! I recognize the engine test tree from some of your other videos I have seen. Like like a great spot to burn some nitro methonal.
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