CHRIS CRAFT COMMANDER FORUM ® .......A photo-intensive technical reference file and ongoing newsletter regarding the original fiberglass Chris Craft Commander. Our mission at this independent not-for-profit non-commercial web site is to "have fun and share information" for your individual personal use. Our main reference feature is the ever expanding MASTER INDEX Files which contain exhaustive photo and technical information on the Chris Craft Commander line (like these original brochure scans, featuring the iconic 38 Commander designed by Fred Hudson) , (an awesome collection of Chris Craft 427 tuning and specification information), and a few words about how to use the information in the forum, etc.

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Original Message
  • Re: the whole story
      • Bill (Login billinstuart)
      Posted May 9, 2007 7:36 PM

      Pitch is pitch..on revolution of a 12" pitch prop moves the boat 12", whether it's a 10" diameter or a 40" diameter. diameter, # blades, blade area all affect slip and prop drag. I'd say you're not too far off with 15x17 if gear is about 2:1, but you may need a little more pitch. Some of those old CC props had alot of blade area...big ol' round looking blades. Lotsa drag.

      BTW..I'm redoing a 1971 31' Sport express that came with 427's. Engines are gone..gonna go back with 454's, recam/retune for a little slower operation, kinda a torquer motor. I like those new down angle trannys that don't require reverse rotation motors.
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