Droop Snoot and Porpoising...

[jetdrive]

How does putting on a Droop Snoot affect porpoising on an 18-foot V-hull boat?

I.e., does it cure it or make it worse?

Thanx for all the replies in advance...

[cave]

couple of questions 1st. Do you have a diverter, Ride plate or trim tabs? What Pump do you have? Is it a split bowl like a Berk JG? If yes you may be able to add a wedge between the bowl and droop or nozzle housing.
I had to place a wedge between my bowl & droop. This kept the nose down and reduced the boink boink at all speeds. I have a 2° plastic wedge. They come in 1° increments I tried a 4° but it was to drastic. 2° worked best for mine.

The wedge isn't in this pick but it inserts between the Bowl & Droop
http://i78.photobucket.com/albums/j107/cave13/droop2.jpg

[Flat Broke]

Unfortunately, every boat is different. Asside from that, droops come with a wide array of available pin angles that will effectively do the same thing as adding a wedge. So there is no right answer for your question.

Since you're asking about droops, I'm going to assume you have a split bowl. If this is the case, there are a couple things you can try before yo pony up for a droop.

If the boat is poroising right now, try installing a 2* wedge using the wedge to angle your thrustline down. This may scrub some speed, but may eliminate the porpoise allowing for better driveability. If you don't have a porpoise, you can use that same wedge turned 180* to create 2* of up angle in your thrust line. This may induce porpoising or otherwise alter the handling characteristics of your boat.

Additionally, if you have a place diverter, and/or a shoe and rideplate setup, there are a multitude of things that could be adjusted to alter the attitude of the boat. The more info you share about your boat and setup, along with what you are trying to accomplish; the better your chances of getting some answers specific and useful to your situation.

Sorry there isn't an easier answer
Chris

[cave]

here is what the wedge looks like. This image borrowed from CP Performance but can be purchased at either Rex Marine or CP. I had the same problem when I added the droop. I had to wedge down 2°. The Rooster tail was cut in half but the ride improved. The boat, a Kachina ran dry after the droop. I lost 4mph too. But the ride made it worth it. If I wanted to go faster I could add more HP.

http://www.cpperformance.com/images/152-M-10-07.jpg

Good Luck.
cave

[Flat Broke]

Rooster tails are just an asthetic side effect of being able to adjust the thrust angle using the diverter. In other words, don't make ride-altering setup choices around being able to drive with the tail all the way up. If your boat rides nice at the speeds you use it with normal trim levels, you're good to go.

Chris

[cave]

What happens now is that if I have the nozzle all the way up to throw a rooster tail, it porpoises like crazy.

This is what I'm basing my suggestions. I had the same problem. I could care less for a rooster tail that was 10' tall. My Kachina porpoised so bad I loaded it up and drove straight over to Bergeron's and bought a 4° wedge. Went back to the lake and tried it out. Now It didn't plane all the way up. I was way to wet. So I drove back and Brian switched it out to a 2°. Removed it all at the lake and after putting it back together again, I drove it like I stole it. Its was fixed. Minimal porpoise at full trim up.

Dan Squirtcha? had given me a heads up that I may need one at one of the gatherings. Wish I would have taken his advice from the get go.

I'm no expert. So take this all with a grain of sand. I lived this crap to. Hopefully it helps you out.
cave

[jetboatperformance]

Jetdrive , more info on your actual boat hull would be helpful photos even better. Is you Legend the original application for the boat and is it "set back" by design? in other words is the Jet an OEM insert jet that was designed to be installed that way,or a standard mount jet that was custom set back? re the potential droop,wedges etc on late Legends attachment can be diffent slightly from Berkeley A/T and the like .Anymore info would be helpful to help you make a decision and diagnosis Post up what you can Happy to help Tom :D

[No Butt No Putt]

Most boats will porpose with the diverter all the way up at top speed.

[BDMar]

As someone said earlier, you do not make adjustments to your nozzle angle by what happens when you are making it rain. Most droop snoots have up angle built in anywhere from 4 to 9 degrees. Yes it will popoise worse with the snoot and the nozzle all the way up.... but it is not designed for that purpose. It will/should make the boat faster when the diverter is trimmed properly.