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DaveTrojan

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 #1 
Found this part at a P-47D Thunderbolt crash site. What is it? I need an engine expert>
Is it a magneto or a starter? Each insulator point was labeled with a number.  Numbers from left to right 1, 12, 5, 16, 9, 2, more numbers broken off from part. The P-47D used Pratt & Whitney R-2800 Double Wasp 18 cylinder engine.  I'm looking for a photo of an original part for comparison.  
DSCN2725.JPG

Furthermore, Engine outer casing parts were found, but they have unknown to me what looks like gear grooves on the inside. Can anyone ID these parts? same parts both sides

DSCN3710.JPG
DSCN3711.JPG   

WaltW

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 #2 
Magneto.  A starter wouldn't have porcelain high voltage leads spaced around the body.  Also one is posted on ebay.

http://www.ebay.com/itm/like/311613694664?lpid=82&chn=ps&ul_noapp=true
DaveTrojan

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 #3 
Thanks Walt, the plug matches good. 
Mtflyer

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 #4 
Dave, here's a photo of one at a C-46 crash site. Pretty sure it had R-2800s. I have more photos of this unit, I can email them to you.

DSC_4817.jpg


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Joe Idoni

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DaveTrojan

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 #5 
That's it joe, Please email photos to me. 
mcelhaney14

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 #6 
The pieces of engine case look to be from the nose case that housed the prop gear reduction parts.  Look at this cutaway where the large ring gear meshes with the nose case in line with the distributor location.  
http://447.insidetrackmagazine.com/wp-content/gallery/r-2800-engine-fhc-2013/R-2800-engine-FHC-2013-8994.jpg



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WaltW

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 #7 
Nice catch Bill.  Looks like the planetary carrier locks into the nose case via the splines.  That pic also shows the distributor ring and insulators in the magneto.
DaveTrojan

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 #8 
I like the picture, thanks
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