brass propeller Johnson?

[Michawilden]

Hi All,

I stumbled upon a brass propeller. Looker really cool with the brass and the two blades but I cannot figure out on what it fits. I believe it is OMC. ( see the stamp on the stainless insert)It is a 13 spline, 0.9 inc diameter shaft (23mm). The pitch I should lookup and the diameter of the propeller is 13 inch. It is a michigan propeller but no numbers what so ever, only the inscription cupped.
Does any of you know?

 

[Scott Danforth]

Brass props were the big thing in the late 50's and the 60's. when boats weighed less than 200# without motor and then you hung a 30hp on back.

it could fit some of the early OMC's or a Mac or Scott Attwater,

without numbers. its wall art.

 

[Michawilden]

Could there be a number underneath the stainless insert?

 

[racerone]

That would fit the early 2 cylinder 50 HP.-----The 3 cylinder 55 to 75 HP.----V-4 85 to 140 HP.-----Meant for light fast boat for speeds around 60 MPH ( 100 Kilometers / hr ) or so.

 

[Chris1956]

When did spline drive appear on Johnnyrudes? Mid 70's? Earlier motors were pin drive, I would think.

Are you sure that is not an inboard sailboat prop?

 

[racerone]

????----Mercury had splines forever.-----First 13 spline appeared on the Johnson / Evinrude 1968 model 3 cylinder 55 HP.-----Not likely a sailboat application !

 

[Doh]

Spline Shaft, usually meant Thru Hub Exhaust..

2 Blade, Unknown Pitch but assume 13" by the #13, then Diameter, it looks like it is the length of your Forearm., so 20-24" Diameter.

It is definitely not Outboard, some sort of Inboard Kicker or Sail Aux.

 

[racerone]

It is a cupped prop.----Meant for an outboard and a boat that goes fast.