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Classic Wings Magazine WWII Naval Aviation Research Pacific Luftwaffe Resource Center
When Hollywood Ruled The Skies - Volumes 1 through 4 by Bruce Oriss


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the330thbg
PostPosted: Mon Feb 22, 2010 1:02 pm 
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That's funny.., their LOGO looks a lot like mine!

www.330th.org!

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Edward Sheetmetalhands
PostPosted: Mon Feb 22, 2010 1:47 pm 
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Here is a magazine advertisement of milling the same part back in the day. It was taken in Boeing Wichita's Plant II, underneath the balcony in their machine shop. The milling machine is a Farnham. My scanner could not do the whole page (LIFE magazine), so I centered it the best I could.
Image

Also check out the night time engine run on youtube... It sounds sweet and the pulsing open blue flames are incredible!
http://www.youtube.com/watch#playnext=1 ... tfBPjXSorg

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MX304
PostPosted: Mon Feb 22, 2010 2:30 pm 
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I noticed they are running it with no exhaust ring or stacks. Is there any danger of burning valves? I know on auto engines that is a big no no.
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TheBoy
PostPosted: Mon Feb 22, 2010 6:22 pm 
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MX304 wrote:
I noticed they are running it with no exhaust ring or stacks. Is there any danger of burning valves? I know on auto engines that is a big no no.


I don't know about big radials, but on small radials (670's, 760's, 985's, 1340's...) you are at a pretty big risk of warping valves and seats from the rapid temperature changes. That's all I know about it.

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bdk
PostPosted: Mon Feb 22, 2010 11:25 pm 
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Probably sodium cooled valves on a 3350? I would be more concerned with the lack of cooling of the cylinders- a sign is blocking some of the cylinders and you can see the flags blowing forward when the engine is running.
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Earls
PostPosted: Tue Feb 23, 2010 12:19 pm 
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Thats good to know you can get a spar cut for a B29 :finga:

Sparless B-17 guys, there may be hope for you after all.
Desert Rat adn 2 others need a pair of the square tube style 25 footer spars. The Alcoa machine that made them originally was sold off for scrap to China a few years ago.

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