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Walking the props

July 23 2012 at 12:51 PM
The Silver Turfer  (Login davidgoudie)
from IP address

Response to Night nite FIFI

Oil in the radials tended to settle to the sumps and bleed (leak) out due to the inheerent design of the engines. You may have seen wartime films of B-29's having their props manually turned prior to startup. This was to get oil back to the moving parts prior to the start and run-ups. Several mechanics would, in turn take a blade as the prop was rotated and continue the rotation in turn. This was called "walking th prop's". The engines on the 29's were especially problematic due to constant over-heating and had to be monitored a lot.

Did you ever wonder why a radial engine always has an odd number of cylinders?

The Silver Turfer

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