New Acme 540 Prop

No new messages did you send to chladeks@outlawnet.com ?

Cool Thanks. I sent you an email as well with some phone numbers.

81nautique, I do want that 542. Tell Rob he can email me at chladeks@outlawnet.com thanks for the connection.

My suggestion is the 542 for 302's or smaller and the 540 for the 351's. I run a 542 behind a 289 and get 30 MPH at 3000 RPM's and 40 MPH at 4000 RPM's. Great hole shot and also cured porpoising. I was actually hoping for a few hundred more RPM at each MPH, but I still like the prop.

Pulling a 200 LB plus slalom skier is easy and the boat keeps speed even when the big boy is rounding a buoy.

Does any one think I would be making a mistake by going with the 542 over the 540. My Tique has a 302 and I want more hole shot.

Do you have a spare prop? If not, its worth considering a new one and having the old repaired to keep as a backup. That way youre not out of commision for a few weeks during the summer if you damage your prop again.

Do you weight your boat? Do you do much barefooting? Both the Acme 540 and 542 are highly regarded and will outperform that original prop. The 542 will have the better holeshot, while the 540 will give you a little more speed.

75; that will be tight ,but should work ok.

boat dr, all of the above. How do I measure for these? Do I need to just miss how clost to the hull can the prop come and be OK?
Thanks for the help.

emccallum wrote: Anyone using the Acme #470 three blade on a SN. When I spoke with them it seemed like a good choice for my 95 snob. Still trying to decide three or four blade?? ernest pushing for one for xmas.

Yup, Ive got one on my boat. Its a better prop than the Acme 422 (4 blade), Ive tried them both on mine and my father's boats. If youre currently running an 4-blade OJ legend, you'll notice a huge improvement with the 470. You'll turn 200 RPM higher on the top end, and the boat will be quicker and more responsive at all speeds.

79
are you talking about clearance or we talking pitch?for clearance you need about 7.5 in. from c/L of prop shaft.13 in. for the prop,1.3 for blade to hull..........boat dr

Can someone please tell me if my 79 Ski Tique has enough clearance to run a Acme 540? I have asked a lot and no straight answer yet. Boat dr. do you know? The stock Federal on it is smaller than what came on the Nautiques of the same year.
Thanks

CCskier
after terminating several 4 blade OJ's i had the bright idea to replace it with a S/S wheel of some type. called and talked to several boat and trans. guys......... bottom line props are cheap; planataries and inards of a Velvet Drive are not. use the prop as the weak link of the chain,replace the nibral prop and you ski that day, break the tranny or shaft and you don't............ boat dr

Got my wacked up OJ from NECC today. Just for the hay of it, I'm going to bring it to East Coast Propeller to see if they can repair it.
Rocks suck, BIG TIME!

I was all set to get the ACME 3 blade 470......... now I'm confused

when you compare the acme to the oj you must compare the oj xmp version. this is the cnc version. i tried the acme 3 blade #470. my oj xmp 4 blade is a better prop. the hole shot is about equal but the midrange performance of the oj is 300 rpms less at wakeboarding speeds around 20mph. my top end is also 2mph faster with the oj. i use about 3.3 gallons of fuel/hr with the oj. and about 4.1 gallons with the acme. i sent the acme back and bought another oj xmp 4 blade 13x15.5. it also runs smoother.