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Old 07-20-2017, 02:54 PM   #1
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Prop numbers

What prop do I have here?
The numbers don't add up. Click image for larger version

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Old 07-20-2017, 03:24 PM   #2
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Call Michigan Wheel? (or whomever made 'em?) One of those numbers on there will likely be a serial number.

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Old 07-20-2017, 03:29 PM   #3
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Looks like several different stock #around the perimeter maybe for different boats. Next to the bore " 17 24 " maybe pitch and blade diameter which you could measure.
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Old 07-20-2017, 03:56 PM   #4
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Some prop shops stamp in work order numbers. That prop has been to the shop a lot!!!

Any numbers between the blades on side of hub?
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Old 07-20-2017, 04:06 PM   #5
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Thats the only numbers.
It's a 1 1/2" shaft
I have the pair and they look good so I will sell them when I find out what they are.
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Old 07-20-2017, 05:52 PM   #6
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To sell, they will be worth more if you go get them scanned and get the printout.
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Old 07-20-2017, 07:20 PM   #7
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Any good prop shop and they can measure them for you. Many props are repaired and pitch is change and it is never stamped n the prop. Diameter you can measure yourself but pitch is more difficult.
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Old 07-20-2017, 08:16 PM   #8
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I will take them to the prop shop and see what I've got.
Thanks
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Old 07-21-2017, 03:04 AM   #9
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You can pretty easily measure the pitch by laying a straightedge across the front and the back of two blades at their widest point, measure the distance between them, and multiplying that figure by the number of blades.
ie, if the blades measure 5" from front to back, and its a 4 blade prop, 5"x4=20" of pitch.
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Old 07-21-2017, 04:47 AM   #10
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Or ...

Height between front and back x 360/measured angle

Manual Procedure for Propeller Pitch Measurement
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Old 07-21-2017, 04:38 PM   #11
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How do those work with a variable pitch?
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Old 08-05-2017, 01:27 PM   #12
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It varies
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