62" Prop
Max HP @ 7200 RPM
Pulleys 7.75":3.75" = 2.07 Reduction = 7200 RPM Engine : 3478 RPM Prop
3478 RPM x 62" Prop = 286.7 m/s tip speed (http://www.tasonline.co.za/toolbox/pump/powtip.htm)
287 m/s / 340 m/s (mach) = 0.84 mach
Do these numbers make sense.. I am deathly afraid of this thing blowing apart on me.
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