TOPIC: Reference to Michigan Brass Props

Can anyone point me to website that will reference the diameter and pitch of Michigan Brass Props. For example, I have a 3 blade brass prop that is stamped AMC 390. I know it's for OMC twin 35-40 hp motors. What's the pitch on this blade? So that I don't ask this question in the future, is there a link out there where I can get this information. I found a site but it didn't show one for AMC 390. Thanks in advance.

Eduardo

Eduardo, I looked it up in my book and on aomci
Prop Number: AM390
Brand: Chris Craft
Model Name/Number: Commander K
Horsepower: 10
Year: 1953
Prop Diameter: 8
Prop Pitch: 9
Number of Blades: 3
Blade Material: bronze
Recommended Use: 14 ft.-16 ft. runabouts 1-3 passengers

There is a great reference book available- Cohn's Propeller Handbooks- highly recommended by the folks at the Antique Outboard Motor Club:

www.duckworksbbs.com/media/books/propellors/index.htm

Not sure the AM 390 is anything close to the AMC 390 - certainly not something you could confuse with a Big Twin propeller. The AMC 390 doesn't show in any of the references I've got...

Thanks guys. Here are a couple of images of the prop. Per BillR, he states that the diameter of this prop is only 8. This prop came with a '63 EV Big Twin 40hp. Standard diameters for the big twins are usually 10 3/8. I measured this one and it's right at 10 3/8 diameter. The stamped numbers are clearly AMC 390. Interesting.

Eduardo

Here's the second image of the AMC 390 prop.

Eduardo

I found on a search of the AOMCI forum a post that lists this as a 10 3/8 x 13 1/2 prop:

www.aomci.org/cgi-bin/yabb2/YaBB.pl?num=1286825291/0#0