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"Cox Special MKII .15"



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I love Cox engines!

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I love Cox engines!

Post  batjac on Thu Sep 29, 2016 11:10 pm

To get ready for the Ringmaster Stunt-A-Thon this Saturday, I went out to the garage to pull the Beginner and Baby Ringmasters off the wall to run them up.  Seems that sometime in the last year and a half, I took the engine off the Baby RM to use somewhere else.  So, I pulled out my Case ‘O Engines and grabbed a stunt tanked Bee engine at random.  For the life of me, I can’t remember when, where, or how I came across this engine, or when I last ran it, if ever.  It was well oiled before being put it in the case, so I just mounted it on my test stand and filled ‘er up.  Opened the needle valve 2½ turns, primed her, hooked the battery up, and she fired up on the second flip of the spring starter.  

I LOVE Cox engines!

The Infatuated Mark
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Re: I love Cox engines!

Post  fredvon4 on Fri Sep 30, 2016 8:27 am

My Roger Harris Baby RM Bi-plane was flown last year for Fly a thon with a Medallion on the nose. Yesterday evening I was doing same as you...getting it ready for this weekend. No matter what I did she would not run to my liking. I dug in the cigar box and randomly picked one of the 3 untested Medallion 049s to try.... I went ahead and spun it on the back plate radial mount* on the plane, set needle, primed and second flip was screaming a bit lean...back needle off a bit and she is ready for tomorrow

I love Cox engines also!

* I like the radial mounts from Texas Timers for the back of TeeDes or Medallions cuz they are pretty easy to set on the front of a flat firewall for the Bee engines. To swap the misbehaving engine I just unscrewed it from the mount and screwed the replacement engine on.... The final "tight enough" position is NOT cylinder straight up as the original engine, Now it is canted about 15 degrees to the out side. Looks a little weird but I suspect will fly just fine.

I don't mess with tricks with this delicate plane, just mild roller coaster roundy round flights for a few minuets. Every landing on grass flips it on the top wing but so far no damage
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Re: I love Cox engines!

Post  getback on Fri Sep 30, 2016 9:00 am

Sounds good fellows , I think on my Baby RM I am going to replace the BB with a Golden Bee or Black Widow , I need more time to get to the release from the plane after starting >> Being I have never ran either and the plane has not been maidened this should bee interesting !! Airplane
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