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Cox Engine of The Month
July-2018
MauricioB's

"Tee Dee .020"



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Is this an 020 product engine?

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Is this an 020 product engine?

Post  ThermalSniffer on Sun Dec 03, 2017 2:55 pm

Hi,

I did not bid on this as I was not sure what it was. https://www.ebay.co.uk/itm/112661703321

The seller says it is 020 size and at the same time he had an 049 or two for sale so I'm sure he would have had a size reference to hand. I've not seen an 020 engine on a back plate of this sort before. Is the seller mistaken?

Thanks,
Simon
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Re: Is this an 020 product engine?

Post  MauricioB on Sun Dec 03, 2017 3:00 pm

ThermalSniffer wrote:Hi,

I did not bid on this as I was not sure what it was. https://www.ebay.co.uk/itm/112661703321

The seller says it is 020 size and at the same time he had an 049 or two for sale so I'm sure he would have had a size reference to hand. I've not seen an 020 engine on a back plate of this sort before. Is the seller mistaken?

Thanks,
Simon

I'm looking at the photos of the link that you leave, although the photos are blurry, I think it's a .020, because of the glow plug format and the type of propeller or propeller plate that shows the motor ...
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Re: Is this an 020 product engine?

Post  Jason_WI on Sun Dec 03, 2017 5:57 pm

I think it's a 020 out of the rivets plane.
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Re: Is this an 020 product engine?

Post  roddie on Sun Dec 03, 2017 6:32 pm

Hi Simon, I'm pretty sure that engine came from a Cox "Army Trainer" control-line model airplane. That model was one of the VERY few that was powered by a Cox .020 reed-valve engine "without" an integral fuel tank.





That looks like the animal. You "could" call it a product engine.. but I believe that it's limited to "that" model. I'd buy it.. but that's just "me".. and I don't even own a Cox .020 engine. The needle is there.. and that would be a factor. It would allow mounting an engine with a fuel-tank of your preference.. such as for a free-flight model airplane.

To my knowledge; the only other Cox .020 engine that was designed for a backplate/carb was their "Sky-Copter".
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Re: Is this an 020 product engine?

Post  ThermalSniffer on Mon Dec 04, 2017 8:19 am

Many thanks all. I think Roddie got it spot on. Never seen one of those before hence my curiosity.


Last edited by ThermalSniffer on Mon Dec 04, 2017 8:19 am; edited 1 time in total (Reason for editing : Spellcheck shenanigans)
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Re: Is this an 020 product engine?

Post  706jim on Mon Dec 04, 2017 11:12 am

I bought an 0.020 many years ago that came with a clear tank, no colour anodizing. I suspect it was from some sort of rtf plane. It had very little compression and would only run if i loaded the fuel with a ton of 3 in 1 oil.
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Re: Is this an 020 product engine?

Post  batjac on Mon Dec 04, 2017 6:20 pm

I bought one of those on eBay either early this year or late last year. paid about the same, I think. Nothing particularly special about it. It's just a PeeWee with a back plate for an external tank. I just wanted that specific firewall mount for a future project.

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