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Old school radials had valve trains that needed to be greased every few hours.
Question-
I forgot the reason why -
Why can a radial have only Odd numbers for cylinders ? 3 but not 4, or 7 but not 6 ETC
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162 Assault Helicopter Co,(Vultures ) D troop 3/5 Air Cav. ( Bastard CAV) South of Saigon, U Minh Forest, Delta, and most parts in between.
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