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Cox Engine of The Month
June-2019
robot797's

"cox 049 gasoline"

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Post  Yak-Nine on Fri Feb 08, 2019 7:49 am

I have been a fan of OK engines since I was A kid My favorite is the .074. I was bored last week and it was raining so I was looking at all kinds of things on Ebay that I don't need and I stumbled onto an OK Cub .149 that wasn't listed with all the other Cub stuff, it looked great in the pictures and it stated it was seized. I got it for cheap and figured I would chance it being stuck from old fuel. A little liquid wrench and the heat gun and it was free, the compression was good so I popped off the back cover made sure the rod was good and free oiled it up and put it on the test stand. I added a little extra castor to the fuel and tried starting it, a couple of encouraging pops and it was running. I treated it like a new engine being broken in with heat cycles etc. because I don't know its history but it appears to be broken in now with no black or gray goo in the exhaust. The one thing that is not fun with cubs is your finger and thumb get cooked by the exhaust when tweaking the needle valve, well the .149 really is a finger incinerator I am going to add a small piece of plastic tubing to the needle to get my fingers away from the heat, Its a clear hose that if you heat it up real good it gets soft enough to push over the knob on a Cub and once it cools it gets firm again and locks in place. The problem child came out when it was just about out of fuel it spit out some fuel when it hiccuped and on the next stroke fired again and ignited it setting my test stand on fire, Bad little cubby keep this up and your going back to Herkimer I thought. But all in all I think Its going to be a fun engine and I might have decided on my next Old Time Stunt Engine for My Blackhawk/Goldberg Glo-Bug. TJ
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Post  getback on Fri Feb 08, 2019 8:14 am

Good score on the engine and that it didn't take much to get her going again / That's pretty wild about the fire though , but i did do a bad prime on a Bee that i was having problems with when trying to fly my Baby Ringmaster. Had the engine running the day before so i couldn't understand why it wouldn't go that day ?? Come to find out the pickup tube was rotten Doh!  I have a video but can't show it here to volger Very Happy  I adopted a problem child on Ebay Justin15
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Post  Yak-Nine on Fri Feb 08, 2019 10:02 am

I hope you got your Ring back in the air, I remember a .Baby Bee starting a small grass fire at the county Fair when I was in the 4H model club, but we just stomped it out. I had read some time back about a Cub starting a Flying Clown on fire, after yesterday I can see how it happened ! I am thinking about getting a Pat King Ringmaster 150 for one of my .074s I think it would be a good match. I just like how the Cub's run they are luggers not screamers cause my reflexes aren't what they used to be Smile TJ
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Post  getback on Fri Feb 08, 2019 1:12 pm

Repaired but not in the air it was a scratch build and had a little twist in the wing when i got done .. tried to straighten it best i could ... Maybe this year !! Yes i need to slow some my stuff down reflex is one thing then standing is another lol!
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Post  Ken Cook on Fri Feb 08, 2019 4:09 pm

The Cub .149 is loud. The .19 is deafening. Those engines are just outright obnoxious. Cool but loud.
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Post  YakNine on Fri Feb 08, 2019 5:42 pm

I have most of my stuff in storage right now , I am in a small apartment and am getting back into the little planes , it's just easier for now plus it's a lot cheaper Skyray are $16.00 that's about what they cost in 1986 when I stopped flying and started Mechanic School. I fly my swap meet Sig Buster mainly now but have an Akromaster in he Works and a little Skyray. My wife says this mid life crisis has been going on for 8 year's lol. TJ
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Post  roddie on Fri Feb 08, 2019 6:21 pm

Why do you use two different member-names? One has a 2011 join date and the other a 2019.. Huh...
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Post  YakNine on Fri Feb 08, 2019 6:44 pm

roddie wrote:Why do you use two different member-names? One has a 2011 join date and the other a 2019.. Huh...
I tried everything to log in a last week with my original one and It wouldn't let me in I created a new one and the next day my old one let me in, I gotta see if I can delete one. TJ
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Post  YakNine on Sat Feb 09, 2019 3:40 pm

Here is the Problem Child in all her glory.I adopted a problem child on Ebay Img_2016
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Post  YakNine on Sat Feb 09, 2019 3:43 pm

this is just a picture of the comparisons in size from left to right .049 .074 & .149I adopted a problem child on Ebay Img_2017
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Post  YakNine on Sat Feb 09, 2019 3:47 pm

I noticed that one of my .049 B's had a longer needle valve which fit the .149 just fine, I think this is the newest engine from OK that I have, I am going to order a few from Ted Brebeck at OK EngineI adopted a problem child on Ebay Img_2018
before he up and retires
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Post  ticomareado on Sat Feb 09, 2019 5:15 pm

The best use by far for a Cub .19 is in nostalgia Class A free flight and R/C assist free flight.

https://www.bmjrmodels.com/free-flight/nostalgia/honey-b-600

Super light, great power to weight ratio and due to short engine runs involved it won't suffer from primitive metallurgy and noise won't be such an issue.
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