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"Prototype T.D. .010 c.1960"



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AP .061 venturi-equipped

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AP .061 venturi-equipped

Post  944_Jim on Mon Sep 17, 2018 5:32 pm

For Ken Cook...lookie what came attached to a sniped eBay sale. The purchase was attempted in the last few seconds hoping what was on the engine...was really what the poor picture showed.
If nothing else, the venturi was the selling point. I consider the engine spare parts. I think I'll be busy building this winter!

The perfect AP venturi (Jan Holuzko):

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Re: AP .061 venturi-equipped

Post  Ken Cook on Mon Sep 17, 2018 6:23 pm

A part that many would love to have. I found my adapter for the AP. I will have ot get a pic of it. Prior to Jan making his version which was inspired by Larry Renger, Larry was friends with a fellow I believe his name was Graham Collins. Graham made a adapter for the Cox TD assembly and sent it to Larry. I essentially took my design from there and made my own. Graham was using JB weld for something and I wanted to improve on that. Nice job and good luck with it. Ken
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Re: AP .061 venturi-equipped

Post  Surfer_kris on Tue Sep 18, 2018 6:05 am

Are there any advantages with the AP engine over the Norvel ones?

I've always found it to be a rather poor copy of the Norvel, and the nickel layer in the cylinder is suffering from the OS plague, and it is peeling off...

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Re: AP .061 venturi-equipped

Post  944_Jim on Tue Sep 18, 2018 9:16 am

Surfer_kris wrote:Are there any advantages with the AP engine over the Norvel ones?

Other than cost, none that I know of. I've managed to get the APs for an off-the-cuff average of $37.50 (avg shipped).
The same size Norvel I got cost me closer to $55. I love my .074 Big Migs. I'd love to have two more .061 Big Migs...but I'm done buying engines until the APs fail.
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