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Thread: Anybody recognize these?
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03-04-2021, 05:18 PM #1Member
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Anybody recognize these?
I will pull the hubs this weekend (hopefully) and see if there are stampings, but until then, do these look like Mercury humpback cleavers? They work great on my Daytona.
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RADER, 25two.stroke liked this post
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03-04-2021, 05:35 PM #26000 RPM
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Merc Humpbacks
Humpbacks? LOL Never heard that nickname before. Yep, these are Mercury Racing products.
Quite a story on how these props came into being. Mercury Racing spent a ton of money developing all the pitch rate lost wax steel tooling for a basic cleaver 4 blade prop. Problem was for some reason they would throw a blade (regardless of pitch rate). Rather than scrapping all the lost wax tooling to make these props they machined a "hump" into the trailing edge of each blade to stiffen them up. Clever! I always thought it gave these props a very unique appearance. I still have a couple of these for show-n-tell today.
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03-04-2021, 05:54 PM #35000 RPM
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Yes they are humpbacks
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25two.stroke liked this post
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03-04-2021, 08:04 PM #45000 RPM
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Great props
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25two.stroke liked this post
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03-05-2021, 03:27 PM #5Member
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Great story, thank you!
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03-05-2021, 03:28 PM #6Member
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I agree. They work great on my Daytona.
I was confused as I thought other prop companies also made a "humpback" type cleaver, that's why I asked if it looked like a Mercury product. It looks like Merc is the only one that made this type after doing a little research?Last edited by Charli; 03-05-2021 at 03:38 PM.
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