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Post  EivindB on Fri Apr 17, 2020 2:16 am

I have a special wenmac engine that I haven't seen before. is this oneoff or is it some wenmac produced?Wenmac boxer 780c7b10
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Post  Oldenginerod on Fri Apr 17, 2020 6:16 am

Welcome to the forum.
This almost certainly isn't factory. I would suggest home-made, although there were some companies that produced kits for making multi-cylinder Cox engines.
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Post  ticomareado on Fri Apr 17, 2020 7:37 am

It looks like it might run.
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Post  Kim on Fri Apr 17, 2020 7:57 am

Mighty Cool !!!
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Post  ticomareado on Fri Apr 17, 2020 8:18 am

One qualifier though: It has to have one custom reverse rotation crankshaft in order to run. (possibly fabricated from an un-bored, unrelieved Pipe Bomb shaft.
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Post  944_Jim on Fri Apr 17, 2020 8:27 am

Neat powerplant!
Counter-rotating shafts would be required if the two crankshafts touched each other. Not the case here (not trying to be belligerent):Wenmac boxer Img_2219
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Post  ticomareado on Fri Apr 17, 2020 9:11 am

Oh well, I never did that well in Gears 101 anyway.
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Post  ffkiwi on Sun Apr 19, 2020 6:48 pm

There was a company-FCS? FCP? (Flight Control Systems? Flight Control Products?) back in the late 60s early 70s that produced geared twins using a very similar if not identical arrangement-but using Cox reed valve 049s....this Wenmac might have been a)a developmental prototype or b) someone's attempt to produce a copy of the commercial offering....

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Post  Oldenginerod on Mon Apr 20, 2020 6:23 am

ffkiwi wrote:There was a company-FCS? FCP? (Flight Control Systems? Flight Control Products?) back in the late 60s early 70s that produced geared twins using a very similar if not identical arrangement-but using Cox reed valve 049s....this Wenmac might have been a)a developmental prototype or b) someone's attempt to produce a copy of the commercial offering....

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You might be right Chris. There's an "F" and an "S" visible on the mount. Can't see a "C" inbetween due to the needle valve.
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