28 Acme props

[CClassic28]

Mac,

I would like to thank you again for the time you spent talking to me on Saturday at the A.C. show.

After speaking with you, I sent Acme an email and received an answer from a gentleman named Bill Weeks. He is quite knowledgable and after a few go rounds with engineering he came back to me with an answer of Yes, we can halp you.

Acme is CNC machining a set of 17x20 4 blade Nibrals with a .075 cup from 19" castings for me.

Bill had nothing but kind words to offer about you and I had to agree with him.

I should receive the props in 6-8 weeks just in time for my spring launch. I will post again with performance results.


Thank you again,

Christopher Ramos

[CClassic28]

Mac,

You mentioned in a prior post that we should not remove the cup in our props. Do you think that .075 of cup is enough for my new ACME 17x20 4 blades. Please let me know.

Thanks again,

Christopher Ramos

[biteme]

acme props

Mac sent me a pair of props for my boat and rite out of the box thy were great..a very diff. feel and a lot better response .. i am toping out at 32k

[Nicky M]

biteme what engines are in your 28

[biteme]

chevz71

315 yanmars..boat is fully loaded...tower,genset,a/c-heat..

[Nicky M]

biteme, what year is your boat and whats your max rpm with the boat loaded, and what size props do you have

[biteme]

boat is 2003 purchased at ny boat show in 04--3800 rpm as per eng specs and thats what it turns..dont know about the props..i had dinged the orig.set and needed a backup pair..mac sent me a set all set up for my boat..i just put them on and they ran great . the orig set are now my spares..

[Spool's Out]

Props

Classic,

When you called Acme how did they come up with that prop configuration for you? I have a 95 28 with gas straight inboard and am looking at doing something with my props. See my post in the Mechanical Forum.

Chuck

[Mac]

Donna Marie,

All prop manufactureres use a little different methods for cup. The Acme is cupped in the middle of the trailing edge, not the tip. From past experience, I would say .075 is more than enough. We actually use .045 for our 35 props.

Mac