New Prop Recomendations

[MWellner]

I need a new prop for my 1995 Evinrude tiller pushing a 16" 1650 Lund Rebel.
It should be $100 or less.
What kind of prop do you recomend and how big of a prop diameter do I need.

By the way I busted it off of the public access on Lake Plantagnet.

[This message has been edited by MWellner (edited 04-06-2003).]

[Surface Tension]

What size motor?
What size prop do you have now and what improvements would you like to see in performance. How is it out of the hole and Whats your RPMs a WOT.

[iffwalleyes]

Contact your nearest deal to find out what they recommend. After you find out what they suggest you can get what you want from where you want. They have more experience with this thing than most of us.

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Grip it and Rip it

IFFWalleyes
I Fish For Walleyes

[MWellner]

It is a 1995 25hp Evinrude longshaft.
I'd like to see some more speed and better acceleration.

[Surface Tension]

Sure more speed and better holeshot.
You'll need more horsepower to get both. lol Sorry pick better holeshot or more speed because you cant have both.
If you have excessive RPMs at WOT you can go up in pitch and increase speed but by doing so you'll lose some of your holeshot.

I'll list some prop sizes for your motor but I need to know if you have thur hub exhaust or splined shaft.

[kslipsinker]

Mercury has a place on their web site that you can choose a boat set up and type of performance you are looking for. It will give you prop recommendations. Maybe Evinrude has something similar on their web site

[MWellner]

I have through hub exhaust

[Surface Tension]

heavy loads 11 x 9 OEM part # 386317
Cruise 10 1/2 x 11 # 386637
light loads 10 x 13 # 386933
light loads 10 x 15 #390380

Look at the prop you have now.
11 x 9 11= diameter 9 = pitch
The lower the pitch the more hole shot (power) you'll have. The higher the pitch the more top end you'll have.

[Fisher Dave]

A mid 80's 16' alumicraft lunker (livewell, decking, bow mount trolling motor) managed to do 30 mph with me in it (210 lbs) and the livewell full. This was with a 25 hp on reasonably calm water. The 40 hp we took off the boat, would give it a top end of 34 mph... other than getting on plane, there was next to no difference.

When we 1st put the motor on, it would barely get on plane, and we would manage to get about 22 mph. We dropped the pitch to 1 below the *book recommendation* for that size of boat and weight, and that was like putting a new motor on. No problems getting out of the hole, and we actually gained 8 mph with the motor able to run up to proper RPM's. Another freind of mine did the same thing running a 30 hp on a mid 90's model alumicraft that was deeper and wider and had the same results.

The boat with 2 adults, full livewell, and full of gear will do about 27 mph ... thats plenty fast enough to go fishing.. but your not going to win any races.

The problem in both cases starting out, was it was too much prop for the light horsepower and weight of the rig. Although in each case the props *scooped* less water per rotation, the end result was you still gained speed because the motor was allowed to run into higher RPM's .. or well into the motors *power band* where weight wasnt dragging them down.

If you do this, go down 1 pitch at a time until you find the right pitch for your purpose, running your motor at too high of RPM's will cause damage.

[MWellner]

The prop is 10.5x11
It is sluggish in acceleration, Id like it to accelerate quicker.

[Surface Tension]

Then you would want to try a 11 x 9.
part oem #386317 michigan wheel #012054

Ive heard that there are places that will let you try a prop before you buy it but I havent found any. Use those numbers to find a prop on ebay. New there under $65
If you find a comprop for cheap you may want to try it also. Its a 4 blade prop with a 13 pitch. 4 x 10 x 13 #O4423