Racing aircraft contra-rotating propellers - GIF
Contra-rotating propellers of Precious Metal, a racing aircraft based on the P-51 Mustang.
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Previously:
https://www.homemadetools.net/forum/...743#post124090
https://www.homemadetools.net/forum/...757#post174932
https://www.homemadetools.net/forum/...168#post145644
https://www.homemadetools.net/forum/...637#post102089
https://www.homemadetools.net/forum/...962#post168026
