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Cox Engine of The Month
January-2020
MauricioB's

"Tee Dee .09 r/c TEXAN"



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Post  Kim on Thu Nov 14, 2019 3:29 pm

Got my engine today---here is my Facebook Post:
-------------------------------------------------------------------------
Thanks to the extreme generosity of one of my flying buds over on the Cox Engine Forum, my currently un-throttled Carl Goldberg "Ranger 42" will be cruising next summer's S.M.A.L.L. Skys behind a vintage "barrel throttle" Medallion .049.

Medallions are sort of an "interim" engine between the good-natured reedies and high-compression Tee Dee engines, and like the Tee Dees, are beam-mounted and will only run in one direction.

The Ranger presently has a Medallion .049 that runs wide open 'till it's fuel is gone and then glides in for a landing. This engine will allow low/slow passes down the flightline, along with the option to land at will.
(Flying bud Tony will once again be asked to step up for these as I shoot some video/photos of the moment!)
Gonna be a fun summer!

Thanks Rene !!!!!!


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Last edited by Kim on Mon Nov 18, 2019 11:14 am; edited 1 time in total
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Post  dckrsn on Thu Nov 14, 2019 4:06 pm

Kudos to Rene.
Bob
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Post  MauricioB on Thu Nov 14, 2019 10:57 pm

So !!!! ... you already have your engine ... I LOVE USA :-)
It is an expression at the distance of joy ...
I'm happy for you Kim and I'm happy for Rene, I hope to see the progress of your project!
A hug and always grateful to belong to this wonderful forum! I Love This Forum! Small Cox Logo cheers Clapping Clapping Clapping Clapping
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Post  Kim on Fri Nov 15, 2019 3:07 am

MauricioB wrote:So !!!! ... you already have your engine ... I LOVE USA :-)
It is an expression at the distance of joy ...
I'm happy for you Kim and I'm happy for Rene, I hope to see the progress of your project!
A hug and always grateful to belong to this wonderful forum! I Love This Forum! Small Cox Logo cheers Clapping Clapping Clapping Clapping

Thanks Mauricio!

Yes, Rene's generosity is fantastic, and this engine is well appreciated!!!!!!!!

We do have us a great forum here!
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Post  getback on Fri Nov 15, 2019 5:19 am

Way to go Kimmmmmmm !! and Rene you have done it again!!!!! Hope she is a good runner for you and look forward to the Maiden This Site Rocks!
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Post  Kim on Fri Nov 15, 2019 7:57 am

Thanks Eric!!!
Looking forward to putting it on the Ranger for some slow cruising!!!!!!!!!
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Post  Kim on Mon Nov 18, 2019 10:51 am

"A very Castor Morning"

So, got Rene's Medallion .049 on the stand this morning, and it's looking good.

Thank you again Rene!

Running the Medallion slobbery rich with clip hooked up to help things along.

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Let the pony run!  Top end was in the mid-14k's, bottom end at about 6.5k.

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Cruise mode

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Post  Marleysky on Mon Nov 18, 2019 11:57 am

WHOO-HOO! She’s Alive and Running!  I Knew you would get her going. Top and bottom RPM range seems adequate, although the factory indicates a bit higher top end on testing random selected engines with a 5”x3p prop.  The low end will definitely give you some nice slow fly-bys. I never tore it apart for a good internal cleaning, so if running it slobbering rich doesn’t help clean out the old castor, maybe a good cleaning and polishing of the crankshaft would help the top end speed. Yup, spring will be here before you know it! And Rangers will be in the air!  Waiting for videos.  
It’s great to see so many happy people!  I Love This Forum!

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Post  1/2A Nut on Mon Nov 18, 2019 12:03 pm

Those numbers are likely with a open exhaust or is that photo of the manual showing
numbers with the throttle system?
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Post  Marleysky on Mon Nov 18, 2019 12:15 pm

Brad, you are right on! Those numbers came from a “standard” open exhaust 049 instruction sheet, from our instruction files. That’s where the difference is!
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Post  Kim on Mon Nov 18, 2019 12:29 pm

Yeah, it ought to gain a little bit if I take the compression up a some, but if I can get somewhere close to 15K with dependable runs, and throttling, it'll haul the Ranger, and I'll be happy!
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