ACME 912 or 542

[Memmer99]

Anyone running the ACME 912 or 542? I'm in need of a new prop and just looking for some feed back. I'm leaning more toward the 912 because I heard it's more of a Surfing prop for boats weighted over 2000lbs. I'm only pushing 1750 lbs but who knows, I may aquire another sac over the winter. I'm wondering what the specs are for the 540 and 542 if anyone happens to know. I'll call ACME directly before I make a final decision. Oh and JT Nettle is the cheapest prop man in the business. Believe me I've been searching for a week now!

[87SunSportMikeyD]

Memmer remind me - your boat is an 89, what is your trans grear ratio (1:1) and stock prop??

I went with the ACME 913 13x10.5 3 blade.

You would not be able to use the 912 because it's RH rotation for Correct Craft boats.

[Memmer99]

Mikey, Mine is 1:23.1 RH PCM tranny. Same as by buddies 92 Natique. I'm pretty sure the 912 is the same as yours only RH.

[ejojprop]

With the 1.23: reduction gear you wil need more pitch than either of those porps have. Those are props for 1:1 transmissions.

[87SunSportMikeyD]

Sorry I was under the impression Supra never made a RH rotation boat. 912 is the same as mine but opposite rotation.

What are the specs on the 542 again?

[Memmer99]

Mikey, The 542 is a milder version of 912.
Acme-542 3 blade 13x11.5, .080 cup, 1" bore, RH only
I found this link that gives all the specs for ACME props.
http://www.boatownersworld.com/Props...propellers.htm


ejojprop, What OJ prop and pitch would you suggest for my boat? I run 1000 lb when we wakeboard and about 1750 when we surf. I plan to run a little over 2000 lbs by next summer. I'm curious if you would suggest a 3 or 4 blade prop for my 1:23.1 Trans.

Thanks,
James

[87SunSportMikeyD]

I am no where near OJ or Nettles level of knowledge, but I would wager you would be recommended a 4-blade because of your trans. Was your stock prop a 13" diam?? I thought they were 14's or were capable of running a 14" but again my boat is not like that so I am not positive.

IF you were running a 3-blade I would recommend the 13x10.5 because it is great for surfing and you didn't mention a need for slalom or barefoot speeds. The 10.5 tops out at about 35mph at 4200rpm in my boat. But the hole shot is amazing. Passangers need to hold on to something if I gun it. Surf speed in 3 seconds approx.

[Memmer99]

Mikey,

I spoke to JT yesterday and he recommended the ACME 540. He shipped it out yesterday and should be here before the weekend. He gave me a great deal, all I had to de was say your name!

On another note, I got my prop shaft in and the damn bell housing was already on it. Now I have to find a machine shop to press it off. I should of just paid the extra 40 bucks and got the one from Skidim. Damnit!!!!!

[ejojprop]

[QUOTE=Memmer99;42818]Mikey,

I spoke to JT yesterday and he recommended the ACME 540. He shipped it out yesterday and should be here before the weekend. He gave me a great deal, all I had to de was say your name!


Hate to say it but a 13 X 12 will not be enough pitch for that gear ratio. Watch for the motor to over rev. JT should have called here first.

[Memmer99]

JT said I can send it back if I don't think it's for me.