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Help! .15 cox engine différence Need of information

Post  davidll1984 Fri Dec 17, 2021 4:52 pm

For the engine of fred I have a sportsman piston I wondered that the crankchaft pin is of the same dimension to the médalion model I believe that this model comes with a different piston, if my memory is good Is that the model with a pin is different?
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Help! Re: .15 cox engine différence Need of information

Post  944_Jim Fri Dec 17, 2021 5:25 pm

David,
Do you have a dial caliper or micrometer? I could pop one of my Medallion .15s apart and measure the crankpin.
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Help! Re: .15 cox engine différence Need of information

Post  davidll1984 Sat Dec 18, 2021 1:42 am

Yes i have a numérique caliper I think it will be the same as the sportsman But it is almost sure that the cylinder will fit unless it different threads Me the only .15 cox that I have is som sportsman no tee dee or olympique It's a lack on my part I used to know a bit of everything on cox engine And it's the only model that I don't own yet as the .15 médalion or tee dee sale à bit expensive 10 years ago I saw several for sale Prices around $ 80,120 for new engines I always prefer the smallest that's why I don't have .15 I preferred to buy .9 I will one day own them all the difrent size and models Small Cox Logo Babe Bee .049
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Help! Re: .15 cox engine différence Need of information

Post  davidll1984 Fri Dec 24, 2021 9:53 pm

My knowledge on .15 engine is limited To fit Cox .15 Medallion Throttle Control Assembly .15 cox engine différence Need of information Scree127
Someone surely knows its if the larger or the thin wall cylinder that fit this What cylinder I need ??? rc Or large cylinder model without rc ring its for the fatals flaws engine I haven't yet received the motor That I order upgrades for him y have two type cylinder old sportsman taper thin wall and the alredy rc médalion I still don't know if the sportsman's piston fit on the crankchaft one way or another I will soon know all this
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Help! Re: .15 cox engine différence Need of information

Post  balogh Sat Dec 25, 2021 2:10 am

David,

The crankpin of the .15 RC Medallion I got from Batjack  has a diameter of exactly 3.9mm.

.15 cox engine différence Need of information 16404110

The piston has a gudgeon pin, and the conrod has an oiling hole on the big end. The RC muffler fits the thin wall cylinder.

.15 cox engine différence Need of information 16404210
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Help! Re: .15 cox engine différence Need of information

Post  davidll1984 Sat Dec 25, 2021 5:47 am

Thank you for the information I will surely be able to use the sportsman cylinder with this rc exaust I didn't measure the crankpin, I'm going to do it as soon as I finish my coffee Huh... Pray My god make it work
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Help! Re: .15 cox engine différence Need of information

Post  davidll1984 Sat Dec 25, 2021 6:44 am

positive results that should do it is the same diameter I will be able to use my sportsman's new cylinder wit the rc exaust Because it would seem that made on the thin wall cylinder tink its the Good parts from the right time frame I can't wait to bring it to life Santa Lighting The Tree RC Plane Small Cox Logo Babe Bee .049
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