Correct Prop

[I_Just_Fish]

I have a 1900 LE with a 200 Merc with a 19 pitch high five prop, at WOT, fully trimmed, I'm only turning 48-4900 RPMs. Can I get some feedback on what pitch prop I might try to get the RPMs up to maybe 5500-6000? This is how ever I have the boat loaded, full tank of fuel, livewells and baitwells full, all gear and two people. Or empty livewells, half full of fuel, doesnt matter. I do like the high 5 prop because of the holeshot I get. Thanks for your suggestions, in advance.

[mnxd9]

I think you have other issues than prop... I would think that prop would be pretty good, and spin that motor much higher. Maybe someone else can chime in, maybe the motor need to be up a bit higher, or it needs a tuneup or something. And heck maybe the tach is wrong. You should post a GPS speed too.

[teamlund]

I would also agree that that prop should be fine for that rig. I am also running a prov. Before you go messing around with expensive props get your engine height dialed in. http://www.veradoclub.com/smf/index.php?topic=137.0 Than after that is done if you are not happy with the performance than it is time to play with a few props. My buddy just raised the engine on his boat. 16 ft alumacraft with a 70 hp yamaha 2 stk. He gained 400 rpms and 3.5 mph top end. This should help

[REW]

Work with your dealer and get a half dozen props of pitches ranging from 17-22. Try them all.
You need to find if
a: Your motor is making its fully rated hp.
b. If your motor is relatively new, you might ask your dealer to put a test prop on your motor to check its hp output. i.e. they put a test wheel on the motor; put it in the test tank, and open it up. If the motor is making its rated hp, it will spin a specific test wheel designed for that motor to a specified rpm. If the motor can't spin the test wheel to that rpm, it is not making its rated rpm and needs problem resolution.

c. After verifying that your engine is capable of makeing its rated hp, and you try a half dozen or dozen props, you will find the prop that gives you the desired rpm and performance.

Too many folks are told to put on a particular prop for a given motor and boat. However, no two motors are identical. No two boats are identical.
Often, one motor might make 10% more hp than the identical motor on a different boat. So, the motor that is weaker will likely need a different prop for its optimum performance.

Also, no two boats are identical. I 1/16th difference in the trailing edge of some boats can cause a 2-4 mph speed difference between two boat hulls. So, every little difference counts.

Good luck.
REW

[dno]

TeamLund your link to the Verado site was very interesting and got me thinking about the height of my motor.(2006 crestliner mirage with 2005 90hp honda sitting at the second hole from the top and running a 13.25 x 17 pitch ss prop wot is 5400) My question is did your buddy raise 1 hole or 2 hole to gain 400 rpm's

Thanks

[teamlund]

I wasnt there but I believe that it was 2 holes. It will be diff for each rig. You will just have to do some testing. Or start a thread on diff web sites to see where guys with your rig have the engines mounted.

[Chris K]

I think from my experience that you would be best suited to try a 21 tempest. It should give you the bow lift you need and allow you to turn the right RPM's, and they hook up in pretty much all water conditions.

Chris K