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View Full Version : Acme 1285 vs 1479 -- any experience?


wheelerd
06-19-2013, 12:33 AM
I'm currently running an Acme 1285 on my 05 X2. (Was installed by the PO.) We board and surf but also slalom. I contacted Acme for suggestions on a prop that might lower my RPM's when skiing but still provide low end grunt. They suggested that the 1479 would lower my RPM by a couple hundred. Same diameter and pitch as the 1285 but .150 vs .105 cup. Anyone have experience with the 1479 prop? I'm not sure if it's worth the $$ just for a small change. I do know I could sell my 1285 in a heartbeat.

EJ OJPROP
06-19-2013, 11:00 AM
What engine is in the boat? EDIT - Just saw the MCX engine. How much ballast do you typically run?

wheelerd
06-19-2013, 12:18 PM
For surfing we run about 1500lbs.

EJ OJPROP
06-19-2013, 01:32 PM
To drop the RPM for skiing and still have decent low end while loaded I would suggest our 14.75 X 15.5 LC Splined XMP EDGE 4-blade.

thamax
06-19-2013, 04:55 PM
I ran the 1479 for awhile. I have both a 1285 and 1479. Both worked good for surfing 3200-3300 Rpm with alot of ballast. At 12 mph wakeboarding not much difference between them. 1285 had a higher top speed by 3 mph with no weight in the boat. I am running the OJ TZ X-5 right now and I feel it's a better all around prop running Serious weight while surfing and wakeboarding. Fuel economy is up for sure

wheelerd
06-20-2013, 01:36 AM
I ran the 1479 for awhile I have both a 1285 and 1479 worked good for surfing 3200-3300 Rpm with alot of ballast at 12 mph wakeboarding not much difference the 1285 had a higher top speed by 3 mph with no weight in the boat I am running the OJ TZ X-5 right nowand I feel it's a better prop all around with serious weight and surfing and wakeboarding I know my fuel economy is up for sure

Your 1285 had a slightly higher top speed than the 1479? That seems to be at odds with what Acme indicated would happen for my boat.

thamax
06-20-2013, 07:05 PM
Not much I think 43 mph and 40 was spread on them but I need to retest this year when I get a chance I am in a 4300 lb x-star mcx with a hotter cam so like 10-15 hp above stock

thamax
06-20-2013, 07:06 PM
At 4000-5000ft elevation

wheelerd
06-21-2013, 09:05 AM
To drop the RPM for skiing and still have decent low end while loaded I would suggest our 14.75 X 15.5 LC Splined XMP EDGE 4-blade.

Thanks Eric. Any idea what the approx. RPM gain would be at 34 mph running unweighted?

willyt
06-21-2013, 09:09 AM
I ran the 1479 for awhile I have both a 1285 and 1479 worked good for surfing 3200-3300 Rpm with alot of ballast at 12 mph wakeboarding not much difference the 1285 had a higher top speed by 3 mph with no weight in the boat I am running the OJ TZ X-5 right nowand I feel it's a better prop all around with serious weight and surfing and wakeboarding I know my fuel economy is up for sure

That... Was the longest sentence I have ever read

wheelerd
06-21-2013, 09:54 AM
Don't you know that in the 21st century punctuation is irrelevant (or so it seems.) 8p Communication is evolving . . . back to grunts and gestures.

bjen
06-24-2013, 01:33 PM
Interested in your research here, I have known we need to re-prop our X2 from what I assume is the stock 14X20.
After surfing all day yesterday with lots of extra ballast, it painfully apparent how much the boat struggles.
Seems general consensus is the 1479 is the answer if we don't need 36mph all day to ski

Aric'sX15
06-24-2013, 02:01 PM
hey ive got a 14.75X15.5 for sale!

XStar08
06-24-2013, 02:45 PM
That... Was the longest sentence I have ever read

You should have a look at what we attorneys use to write the whole day long...

I'm currently running the OJ 14.75 x 15.5 and it seems to be a good choice. However not too much top speed anymore but, who cares?
What a local prop specialist told me today was that lowering rpms is generally spoken not a good idea since every engine has its optimal range of rpms. For the LY6 they write it is between 5200 and 5600 max. So by putting on another prop might cause your engine not running in the optimal range and therefore run under overload even at low rpms. However by having my engine running at 5200 rpms (top speed scenarios) I don't feel too comfortable.

bjen
07-18-2013, 04:02 PM
Did you go any further on a prop selection, I have a 1285 on order and was interested in what you found from any of the ideas here.

wheelerd
07-19-2013, 05:37 PM
Haven't had time to give it any more thot. My 1285 is OK for now. I never run WOT so 4500 - 4700 rpm for skiing is OK.

thamax
07-23-2013, 01:46 PM
You should have a look at what we attorneys use to write the whole day long...

I'm currently running the OJ 14.75 x 15.5 and it seems to be a good choice. However not too much top speed anymore but, who cares?
What a local prop specialist told me today was that lowering rpms is generally spoken not a good idea since every engine has its optimal range of rpms. For the LY6 they write it is between 5200 and 5600 max. So by putting on another prop might cause your engine not running in the optimal range and therefore run under overload even at low rpms. However by having my engine running at 5200 rpms (top speed scenarios) I don't feel too comfortable.

I like how much focus you two have on my long sentence. Difference between the two is the cup .105 vs .150. The 1285 does better at elevation. 1479 can be turned into a 1285 by any good prop shop for around $150. So get the 1479 and if you need more rpm or speed have it turned into a 1285. The OJ 522 14.75x15.5 is not even in the same range prop wise. Size is similar but pitch is a inch more and cup of .110. Unless you have 8.1 I would not run 15 inch pitch prop nothing has enough torque for it unless you are at sea level.

bamabonners
09-10-2013, 06:13 PM
Any updates on this thread?

My 2013 X2 with 5.7 seems real sluggish with the factory OJ that Eric suggested.

My previous Malibus all comparable Acme 1285. It is an amazing prop.

I am looking at putting on the 1479 or 1285 (leaning 1479).

tkemperdc
09-19-2013, 06:41 PM
I would suggest even looking at a 2061, I ran that on my 2006 X-15, MCX, and was very impressed with it. I was told if I wanted more to next do the 1479. I never went with the 1479 because the 2061 was great all around. I had the two overflow bags in the back and, I think 450 each, on top of the stock tanks, and up front would have 600 lbs in a sack for surfing, plus the stock KGB.

I honestly was not impressed with my OJ nor the customer service at OJ.

ACME has always treated me very well, and when I am dropping $700 on a prop its nice to be treated well. HA!