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Cox Engine of The Month
May-2024
1/2A Nut's

"Cox Tee Dee .051 RC Marine"



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Post  getback Sat Apr 09, 2016 4:24 pm

Thanks for any Help its a .049 size What Engine does this Cylinder/piston belong to Unknow10 What Engine does this Cylinder/piston belong to Unknow11 ERic Huh...
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Post  roddie Sat Apr 09, 2016 5:19 pm

W.A.G..... (wild guess...)

What Engine does this Cylinder/piston belong to Baby_m10
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Post  TDbandit Sat Apr 09, 2016 7:12 pm

Looks to me to be an OK cub cylinder. (Bandit)
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Post  Admin Sat Apr 09, 2016 7:23 pm

TDbandit wrote:Looks to me to be an OK cub cylinder. (Bandit)

I agree, looks like an OK Cub cylinder.

What Engine does this Cylinder/piston belong to Cub049A
image from: http://beseenontheinternet.com/VAHS/engines_and_engine_accessories.htm

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Post  roddie Sat Apr 09, 2016 8:33 pm

I don't see a land below the exhaust-port on Eric's cylinder like there is on the Cub. If Eric's has dual ports.. than my guess is wrong.  

What Engine does this Cylinder/piston belong to Unknow11
What Engine does this Cylinder/piston belong to Ok-cub10

The engine below is a McCoy .049 "Baby-Mac" which looks to have it's cylinder more like a liner set-into the case.

What Engine does this Cylinder/piston belong to Mccoy_10

It's really hard to tell from Eric's photo.. but it appears to me that the port is below the fins.

Eric.. is the piston free in the bore (not seized)?
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Post  TDbandit Sat Apr 09, 2016 9:12 pm

The OK as you probably know has three small intake holes 120 deg apart that exit in between the exhaust slits (the other two would be out of sight) It is very hard to see but the exhaust groove is there you have to carefully look to the right side just above where the port hole is using the table wood as a background and you can just see it, it appears as a wide gap between the cooling fins and the lower most fin. The piston being at TDC doesn't help with seeing the port. (Bandit)
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Post  batjac Sun Apr 10, 2016 12:00 am

"What Engine does this Cylinder/piston belong to"

Mine..  Please, drop it in an envelope and send it airmail....    Laughing

The Facetious Mark
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Post  Oldenginerod Sun Apr 10, 2016 6:09 am

TDbandit wrote:The OK as you probably know has three small intake holes 120 deg apart that exit in between the exhaust slits (the other two would be out of sight) It is very hard to see but the exhaust groove is there you have to carefully look to the right side just above where the port hole is using the table wood as a background and you can just see it, it appears as a wide gap between the cooling fins and the lower most fin. The piston being at TDC doesn't help with seeing the port. (Bandit)

I fully agree. Confident that it's OK Cub by the look of the round intake port below the land. Piston crown looks right too.

Rod
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Post  getback Sun Apr 10, 2016 7:26 am

Sorry it was a long day and a short night ,, It does have 3 what appears to be intake holes below three exhaust ports , and yes it is seized or pushed too far to the top of the liner .. Eric
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