Prop suggestions 20MA

eggsuckindog · #1 05-28-2006, 01:51 AM

I just bought a 20 MA and the standard Merc prop is lame, the motor is high, the current prop is a standard Merc SS with almost no cup, 5600 WOT but also no bow lift at all and it breaks loase easy. Need a prop with longer blades and cup as I had my V8 jacked high and had the same problem with OMC SST props. There are just so many new props out there, any suggestions?

Bigshrimpin · #2 05-28-2006, 05:30 PM

Eggs - What HP merc are you running?

See if you can find a place that will let you try out the props before you buy them. I really liked the HighFive on my MA. That prop likes to run high. I have a 19 Mirage Plus and a 21 Merc Offshore that I'm going to try out this afternoon. I'll post some numbers.

Bigshrimpin · #3 05-30-2006, 03:14 AM

The Mirage Plus 19 is the fastest so far. 50.8 mph @ 5800rpm.
The Mirage Plus 17 tach'd out at 6000/6100rpm 49mph.
21 Mercury offshore couldn't spin over 5000rpm w/ the 1.87 gearcase.

Bigshrimpin · #4 05-31-2006, 01:47 PM

Eggs there are three other props I'd like to try someday.

Merc Laser II 19
Merc Tempest Plus 19
Merc Enertia 19

The Mirage Plus is a great prop . . . More vibration that the 4 or 5 blades, but very very nice. The prop gives the boat the perfect ammount of lift and the ride doesn't get squirelly at high speeds . . . like the Michigan Rapture (which I hated). It holds pretty well in the turns too.

eggsuckindog · #5 05-31-2006, 01:53 PM

Its a 200 XRi sorry pretty stupid

Bigshrimpin · #6 05-31-2006, 07:45 PM

what's the pitch on your current prop?

eggsuckindog · #7 06-01-2006, 06:13 PM

Standard Merc SS 19 with very little cup, I did have it out today and ran 48.5 @ 5500/5600 into a slight wind and it has a T Top. Kinda disappointing but I think I'm dragging too much hull

wildlifeone · #8 06-01-2006, 10:17 PM

I got the same problem but no t-top .i do have bottom paint.I dont dee hoe people are getting 57-60 mph out of these hulls? I so far from that it not even funny.Let me know what rpms you get out your props. I will try a mirage 19 soon. and post. Thanks

Bigshrimpin · #9 06-01-2006, 11:14 PM

I think you guys are both being limited by the spark advance module. If someone has 21 pitch prop throw it on, I'll bet you're still turning 5600.

Bigshrimpin · #10 06-01-2006, 11:20 PM

http://forums.screamandfly.com/forum...advance+module

Quote from the Thread: "Take it off the engine, take a hammer and destroy it!!!!!!"

"

Check your total timing at wide open throttle, set it to 25 degrees and be happy!

Very happy!

The module retards timing(about 2 to 4 deg.) a high rpm, mostly around the 5850 mark.
Acting like a undetected rev limiter.

Take it off!"