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Looking for information on SPECO XB4070 Aviation Diesel

 
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jalmeter



Joined: 10 Dec 2015
Posts: 1

PostPosted: Mon Apr 25, 2016 08:17    Post subject: Looking for information on SPECO XB4070 Aviation Diesel Reply with quote

I am a brand new member and this is my first post.

Looking for information on the SPECO XB4070 diesel. This was a radical axial / barrel / crankless engine that was actually built in the 1940s by a company called SPECO that was based in Springfield, Ohio.

The original requirement was for 2,000 hp at 2,000 lb and the engine came close to meeting this. Any technical information you can provide will be greatly appreciated.

Been through the SPECO archives in Springfield, US National Archives and the Smithsonian archives.

I have 2/3 of the 1947 SAE Paper by T. S. Sherman on the engine, "Slant Mechanisum -..." and would love to get hold the of the last third that I am missing. I have a full copy of the 1947 SAE article "Light Weight, Small Size ..." also on this engine.

The first generation of the engine is in storage at the Smithsonian. I don't know what happened to the last two engines that comprised the second generation.


Yours truly,

John Almeter
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