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"Cox Tee Dee .051 RC Marine"



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Post  John Goddard Fri Jan 11, 2013 10:30 am

Boy
I don't know if I've been lucky or if they're all as good what I've just been running in the garden but
it's a cracker.
I've been beating meself up all week worried that the FF5 won't have enough power, seeing as it's
going to weigh 10oz (the dragonfly bits and starter cam may take it nearer 11) I think this engine would be ok with a 30oz model.
It was a PIG at first and I had to put a standard head and 3 gaskets for the first 3 tanks to get it to run but it was very
strong and I knew it was a goodie.
But tanks 4 5 6 with the red head and 5 gaskets and I thought the world was going to start spinning
backwards.

Perhaps it's a combination of the (very) cold weather, Dragonfly tank/needle/reed, and the medallion type throttle
sleeve giving just the right amount of SPI?
All I know is I've run my most powerful Cox 049/051.

This isn't meant as an advert for Bernie's Emporium but if you want a very powerful Cox he's still doing the
Blue Bullet which is basically the same engine/get cracking lads.

Very Happy

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6 tanks worth
lol!
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Post  RknRusty Fri Jan 11, 2013 10:51 am

Those plugs make a lot of compression. I've blown a glow plug trying to run on three shims on a chilly day. You can probably get away with 3 on a hot summer day, but definitely 4-5 in the cold with 30% or more nitro. That's not scientific fact, just my own observation. Glad you've got a good runner there, JG.

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Post  tru168 Sun Jan 13, 2013 12:41 am

Hi John,

Looks beautiful with Dragonfly tank. Any RPM reading yet?


-Ew-


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Post  John Goddard Sun Jan 13, 2013 4:35 am

It was so cold here yesterday Ew that I had
To put a standard head on it to get it started.
It still held 19.5 though.
Very Happy
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Post  tru168 Sun Jan 13, 2013 5:44 am

Hi John,
Wow, What a speed demon you have there ! Will rpm drop a little with throttle sleeve ? People says no throttle sleeve for SPI cylinder, how's your throttle sleeve perform?


-Ew-
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Post  John Goddard Sun Jan 13, 2013 6:43 am

Not really been able to evaluate it Ew, but It worked fine
On my original tinkered with Cox I had in my Old Timer
Which had SPI,

[youtube]http://m.youtube.com/watch?v=K2TySfboG_8
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Post  tru168 Sun Jan 13, 2013 7:20 am


Nice video John, looks promising! Strong surestart too!

More video please, when weather turns good.

-Ew-
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