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Originally Posted by Top-Water
"Dial-a-Prop" = Multi-Pitch
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Thanks: Same idea, (maybe an earlier design?) but the dial was rearmost, forming a nice taper. (Like an analog radio dial, but tapered).
ETA: Also with "OMNI-Pitch" stamped into the hub.
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Yes confused, He's not going to let go of 'his" theories about metallurgy.
Aluminum or Stainless Steel it does not really matter,
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Oh, yes it does.
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It depend more on the application and what it the very most desirable end result. (Kind-ah) only 2 choices when you get down to it, economy or high performance . Most everybody here has got it right in the previous posts.
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Not saying they're wrong.
So as not to break apart, aluminum props have to be fatter. While S/S can be much thinner, with the ability to
repeatedly flex for "hole-shots", (described as "yield" in the link). Aluminum can't do it, but good for Lake Winnipesaukee, where a spare prop can be carried on board for the expected or
unexpected exigencies.
Then, there's this: are replacement blades available?
☞ For example, try taking a ¼"x4" aluminum bolt (used in screen enclosures), and put it in a vice next to a ¼"x4" S/S bolt—bend both with a short pipe—you'll be lucky to get two bends out of aluminum, and S/S will take forever to break.
Most (not all) alloys of S/S are well-known among mechanics, sailors, and metallurgists for its
extreme resistance to fatigue and eventual failure.
Used on a steel trailer, a loose S/S bolt will wear out the hole it's used in!
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