I have to decide between a climb prop and a cruise prop for my Hatz biplane.
I am looking for a primer on propellor choice. For climb I was thinkng
Sensenich W74EM-54 and for climb Sensenich W74EM-58. Propellor experts
educate me please.

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John "Ebby" Ebensperger
Hatz Classic s/n37
Camden, NY