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TOPIC: Help I D prop

Help I D prop 6 years 1 week ago #63865

I have 2 Michigen props and need to know the pich. They are for my Homelite Numbers PS 76
Thanks
Mike aka the pirate

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Re:Help I D prop 6 years 1 week ago #63915

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Mike,
From an earlier post I asked the same thing and HandyAndy responded:

This is from a 1969 Michigan catalog, all are for the Homelite/Bearcat:

PS72 - aluminum, 3-blade, 11.5x13, 14 to 16' Boats, light loads
SMC620 - bronze, 3-blade, 11.5x13, 14 to 16' Boats, light loads
PS71 - aluminum, 3-blade, 11.5x12, 14 to 16' Boats, all loads, skis
SMC628 - bronze, 3-blade, 11.5x12, 14 to 16' Boats, all loads, skis
PS73 - aluminum, 3-blade, 11.5x11, 16 to 17' Boats, all loads, skis
SMC626 - bronze, 3-blade, 11.5x11, 16 to 17' Boats, all loads, skis
PS74 - aluminum, 3-blade, 11.5x10, 17 to 19' Boats, all loads, skis
PS75- aluminum, 3-blade, 11.5x9, 20 to 24' Boats, one engine
PS76 - aluminum, 3-blade, 11.5x8, cruisers, houseboats, sailboats
SMC629 - bronze, 3-blade, 11.5x8, cruisers, houseboats, sailboats
AMC712 - aluminum, 4-blade, 11.5x8, cruisers, houseboats, sailboats

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Dick Johnson

1989 16ft Sylvan

'57 Evinrude 18 (finally found a decent one)
'58 Johnson 5.5
'72 Johnson 6.0
'61 Homelite
'64 Johnson 18
'65 Homelite 55
'66 Homelite 55
'68 Bearcat 55 (3)
'70 Bearcat 55 (2)
'71 Bearcat 85 (Sold)

Re:Help I D prop 6 years 1 week ago #63936

Thank you
Looks like these will work great for trolling.
Mike aka the pirate

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Re:Help I D prop 6 years 1 week ago #63948

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You're welcome. You'll just have to watch your top speed and make sure you don't over rev it. I got two of those also with one of the last engines I bought.

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Dick Johnson

1989 16ft Sylvan

'57 Evinrude 18 (finally found a decent one)
'58 Johnson 5.5
'72 Johnson 6.0
'61 Homelite
'64 Johnson 18
'65 Homelite 55
'66 Homelite 55
'68 Bearcat 55 (3)
'70 Bearcat 55 (2)
'71 Bearcat 85 (Sold)

Re:Help I D prop 6 years 1 week ago #64005

I'm using an 8" 4 blade on the pontoon. I might go to a 9" 3 blade ;)

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Re:Help I D prop 6 years 1 week ago #64024

I just got me a tach hooked up so i can watch the rpm's. Also got one hooked up on my buddys G3 with the Bear Cat on it. Running a 13 picth on that one.
mike aka the pirate

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Re:Help I D prop 5 years 11 months ago #65350

Not to jack someone elses thread here but I was looking at my prop today while doing some adjustments and these numbers dont seem the same as what some of you have.
90852-11-B
Im wondering if this is why I'm not getting to my wot RPM.

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Nick

1961 Uniflite 19' Express, Bearcat 55 powered
1975 Chris Craft 25' Tournament Fisherman, Twin 181 FL inboard

Re:Help I D prop 5 years 11 months ago #65378

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that's just the factory stamped equivalent of a PS Michigan, made my Michigan for Homelite/Bearcat.
11" pitch.
If you are running a single on a 19'er I think you want a 9, 10 max, but the tach will tell the story better than any guess.

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Re:Help I D prop 5 years 11 months ago #65424

Switched from 8" 4 blade to 9" 3 blade on my pontoon. Seems to be doing alright. Hope to hook up a tach soon. That will tell the real story. :)

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Re:Help I D prop 5 years 11 months ago #65448

Well it looks like I have a 10 pitch in the boat so I will try that one tomorrow. I have a couple more in storage so ill have to see what those ones are.

How did you like the 4 blade on your pontoon? I was toying with the idea of running one on my Uniflite but not sure if it would be right or not. I am also going to install a tach shortly to see just what i'm getting rpm wise.

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Nick

1961 Uniflite 19' Express, Bearcat 55 powered
1975 Chris Craft 25' Tournament Fisherman, Twin 181 FL inboard

Re:Help I D prop 5 years 11 months ago #65476

The 4 blade works fine. I plan on using that if I have a pontoon full of people. Usually just two of us on it. Cruise about 3-4MPH B)

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Re:Help I D prop 5 years 11 months ago #65535

Switched to the 10 pitch and with a light load i got 4900 rpm and 22 mph. Not too bad for a big boat.

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Nick

1961 Uniflite 19' Express, Bearcat 55 powered
1975 Chris Craft 25' Tournament Fisherman, Twin 181 FL inboard

Re:Help I D prop 5 years 11 months ago #65572

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Sounds like Bill's suggestion of a 9 pitch would be perfect.

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Dick Johnson

1989 16ft Sylvan

'57 Evinrude 18 (finally found a decent one)
'58 Johnson 5.5
'72 Johnson 6.0
'61 Homelite
'64 Johnson 18
'65 Homelite 55
'66 Homelite 55
'68 Bearcat 55 (3)
'70 Bearcat 55 (2)
'71 Bearcat 85 (Sold)

Re:Help I D prop 5 years 11 months ago #65613

Yep I'm thinking so. Going to have to see what I have. But I am going to install the second motor here in a week or so, so then I wonder if the 10 pitch would be better for the twin setup?

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Nick

1961 Uniflite 19' Express, Bearcat 55 powered
1975 Chris Craft 25' Tournament Fisherman, Twin 181 FL inboard

Re:Help I D prop 5 years 11 months ago #65614

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Twins, cool! Had them on my 18C Power Cat.
Just came in from dinking around with the 14T with short shaft 55.
It will be interesting to see what speeds you get with the twins.
Can't beat the price.

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