Do you know your history? (part XI)

MikeD said:
When The AZ Air Guard was flying their KC-97s out of PHX back in the day, I can remember seeing more than once one landing with one engine shut down and feathered.
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Wright 3350 Turbo Compounds weren't a treat either...but more reliable than the 4360's. Apparently it was not a rare event to shut a 3350 down on the Connie according to my Grandpa.
 
ctab5060X said:
Also, interestingly enough, it had variable valve timing. The pilot could select the cam to use, either one for takeoff and another for cruise.
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The engine was something else. I have a hunch that if they had developed the 7755 it would have made a better airplane of the B-36 than the 6 4360's. I am amazed that Lycoming when from the R-680 of 300hp to the 7755 - at least Pratt went 985,1340,1830, 2800, 4360. Lycoming went from the baby radials to the mother of all radials directly.
 
WacoFan said:
The engine was something else. I have a hunch that if they had developed the 7755 it would have made a better airplane of the B-36 than the 6 4360's. I am amazed that Lycoming when from the R-680 of 300hp to the 7755 - at least Pratt went 985,1340,1830, 2800, 4360. Lycoming went from the baby radials to the mother of all radials directly.
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Well, Lycoming was trying to develop some intermediates, but Pratt & Whitney was beating them to it, mostly because by the time Lycoming developed the engines, there was no longer a need for them.

Now, these were Hyper Engines and H engines, but they were trying. I would venture to say that Lycoming was attacking the research end of the spectrum while Pratt was cranking out reliable, proven designs.
 
Here is a good color picture of the 7755. The gray protrusions from the cylinders are the magnetos...

1463-a.jpg
 
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