proping 99 warrior with evinrude 150 /w stats

[budsbud662]

i have a 1999 Warrior 1891SC. It is a 18ft fiberglass walleye boat. The motor is a "like new" 1996 Johnson 150 (not fast strike)...

I had it in the water today and here are the stats with no weight in the boat
and 10galons of gas..

48mph @ 5500RPM 14.5x19 pitch aluminum OMC prop
The boat planes out extremly fast at not much over half throttle.. plane time is under 1 sec at WOT

Im looking to buy a stainless prop.. should i stay with a 19 pitch? should i try a 21 pitch? are there any special kinda props that work better on walleye boats, perhaps more rake??

I think warrior makes a fast hull design.. not sure.. thanks for any help..

 

[Dhadley]

Re: proping 99 warrior with evinrude 150 /w stats

You'll need to max out the current set up before making a decision on a new prop. How high is the motor? IE - where is the AV plate in relation to the true bottom of the hull? Can you use close to 100% of your trim?

You're right at about 11% slip. Not bad but there may be room for improvement. I wouldn't go to a higher pitch just yet. It might be possible but some testing may be required.

 

[budsbud662]

Re: proping 99 warrior with evinrude 150 /w stats

My trim gauge reads about half when it stops pulling the boat out. it feals like it should pull the boat out a little more.. motor might be to high.. the cav plate is directly lined up with bottome of the boat.. and the hull is a V all the way back.. no pad or flat...

 

[Dhadley]

Re: proping 99 warrior with evinrude 150 /w stats

OK, that's about right. Obviously what you'll need is a prop with more bow lift. Which won't be that hard to find compared to an aluminum prop.

Do you have a jackplate?

 

[budsbud662]

Re: proping 99 warrior with evinrude 150 /w stats

No jack plate. i just filled the 40gal tank up and put my 140lb gf in the boat..
i think it planes out better now, (gas tank is located under the floor, central. its a SC so me and the old lady were in about the middle of the boat) and i didnt lose any speed.. maybe .5mph but thats hard to tell with varying conditions I still feal like its planing out way to fast.. whats my next step befor deciding on a prop, maybe an aggressive cup on a 19pitchSS. or a 21 pitch SS with vent holes?? should i try lowering my motor a hole? i dont quite understand why i cant trim it up to 3/4 trim. will a 21SS drop my RPM's too much? i am right at max RPM 5400 with a 19pitch.

 

[steelespike]

Re: proping 99 warrior with evinrude 150 /w stats

I'm not an expert but it seems to me a stainless in the same pitch would put you at about the same rpm with a little more speed.It may also give you a little more trim.

 

[Dhadley]

Re: proping 99 warrior with evinrude 150 /w stats

The trim angle has a lot to do with blade shape, design and material. And a lot to do with hull design. If you were to order a ss prop today I'd recommend something like a 19 Stiletto.