NEW PROP 1988 PREDICTOR

[SpikeJ]

I have an old mercury prop 13" diameter 21 pitch and looking to replace it. I weas considering a Mercury Trophy Plus hoping it will help with cornering while puling skiers and help some with acceleration. I have an 87 Mercury Inline 6 and can get 55 at 6000 rpm wot. Any thoughts on the Trophy Plus and what pitch?

 

[DropTop5.0]

I'm not familiar to the Trophy series, but I have a 22P Laser II on my Enticer (same hull) and I spin it up to 5900ish and get 57 - 58 mph (GPS).

I also have 20P Laser II and it definitely increases my hole shot and cornering. It feels like the boat is more nimble. I don't have any experience with pulling a skier though. I hope that helps.

 

[illMATTic]

Most any 4 blade will give you better bite.

When I ran a 115 on my old predictor the 21 was good for the top end and a 19 pulled them out of the water well.

Remember you will have allot less slip with a 4 blade. A smaller pitch may be needed to pull up a skier.

 

[teamhart2]

My boat seems to like the trophy definitely holds better on corners, and holds good for a great rooster tail, obviously the 24 isnt great for pulling people up, but would love to try a 19 or 21 at some point.

 

[Ramifications]

for what you described, the four blade would be the way to go. As the above responses said, you will need to step down in pitch to go with a four blade.

Where in south jersey are you?

 

[21starflite]

If you are pulling skiers you will probably not want a ventilated trophy.. They don't really like the low/mid speed with the vent holes IMO

 

[sim]

Stick with the 21 pitch when you go from (what I am assuming is) 3 blade to 4. I believe 6000 rpm is a hair too high anyway. When I had my 89 predictor with a 115 inline 6 merc it was happiest witha 4 blade 21 (23 for speed) and was turning 5800 (with the 23p which I'm pretty certain is the safe side of wot according to merc specs.
As I recall it also pulled anything short of a barn out on 1 ski using the 21.
Handling and holeshot were much better with 4 blades than 3.

 

[SpikeJ]

Thanks all for the input. I think I have a good picture now.

 

[SpikeJ]

Millville. Laurel Lake Really