Thread:

De-wedge the droop?

Hello All,
I have a 22' Nordic daycruiser that I have recently redone the jet, wearing was destroyed and impeller laughable as well. At the same time I added a hydraulic place diverter to my place diverter droop and have been quite pleased with the boats behavior out of the hole and slow speeds. With the nozzle all the way down it has really helped the way the boat handles the chop in park and has gotten the bow out of the air, a lot easier to drive. However, at speed as I begin to trim up, the boat hasn't seemed to like it very much. Cruising around 40 it doesn't really feel stable trimming it up, and it doesn't like it at full throttle either. A little above neutral or neutral is all it likes and spends most of the day pointed down. My v drive friend says I might want to de-wedge it with an upside down wedge because he thinks the bow is still too high at slow speeds. Once again I am sure this is a terrible description, but I just want the boat to be as pleasant a ride as possible and handle the rougher water without having to be full in it skipping off the rollers just to get around. Any ideas would be great.
-Tom

Tom,

I did that to my open bow Carrera last year to keep the nose down while pulling Grandkids on a wake board. It helped. The droop has around 8 degrees of up built in to it. I put for 4 degrees down into it and it hole shots better and does not have any real ill affects. It is not a race boat but it pulls harder on the initial hit. I am not sure if I lost any top end, but it is better at what I use it for.

Drop down three threads and read!

Yeah, was reading that thread looking for some help and posted this one with my application and needs. Since I do not currently have a wedge installed, I was more asking if installing a wedge upside down to take the degrees built into the droop out is something that is done and if so, worth pursuing for my instability issues. All help and advice is appreciated.
-Tom

What pump do you have?

Originally Posted by chevellesb406

Yeah, was reading that thread looking for some help and posted this one with my application and needs. Since I do not currently have a wedge installed, I was more asking if installing a wedge upside down to take the degrees built into the droop out is something that is done and if so, worth pursuing for my instability issues. All help and advice is appreciated.
-Tom

This is what I would try, Take the droop off, and install the wedge and place diverter, I bet the boat will handle well on all levels! but just my .02,,

Originally Posted by ol guy

What pump do you have?

Its a dominator pump, A impeller, 56mph at 5100 rpm.

Originally Posted by chevellesb406

Its a dominator pump, A impeller, 56mph at 5100 rpm.

Okay you have a droop with a diverter ! Not to mention from the sound of it no ride plate or shoe! Which for you're ap not needed! BUT what you have done is make the hull feel longer by extending the distance from the end of the hull to the exit of the pump.So basically the hull is searching for stability. think about it. Not to mention with the droop and diverter you have raised the thrust way up in relation to the keel. Therefore it probably feels like the boat is riding on a marble! Alot of the add-ons you have done are better suited for a shoe-ride plate combo. But don't sweat tearing stuff off just pick up an 8 degree shim and mount it thick side up and then learn where the boat likes the changes. Alot of times full up on the diverter is not the best! Mark

I tried to do an add-on but I am not all that when it comes to computers. What I was trying to show(and it doesnt) was I run that boat with an 8 degree down wedge. It handles rough water no problem, gets up and lifts great and never porpoises one bit. NOW before I flipped the wedge it did! Just please notice that the nozzle is down low in relation to the keel. Before I jumped by others about completely different set-up and bottom the theory is the same. Mark

Thanks for the tips Mark, it certainly makes sense, and your description of it feeling like its on a marble is quite accurate. My butt-o-meter is very turned to how drag cars take a set moreso than boats as that is what I have been playing with for 16 years now. So I think you nailed the sensation on the head, like a rear end walking around under the body of the car. I will put in that wedge upside down and try that out to see. And you are right about the purpose of the boat, no shoe and rideplate as its just for cruising, however, it does have the capability to bolt on the PD rideplate, I just figured it would not give me any benefit whatsoever with my application. Thank all of you again for the advice.
-Tom

Originally Posted by chevellesb406

Thanks for the tips Mark, it certainly makes sense, and your description of it feeling like its on a marble is quite accurate. My butt-o-meter is very turned to how drag cars take a set moreso than boats as that is what I have been playing with for 16 years now. So I think you nailed the sensation on the head, like a rear end walking around under the body of the car. I will put in that wedge upside down and try that out to see. And you are right about the purpose of the boat, no shoe and rideplate as its just for cruising, however, it does have the capability to bolt on the PD rideplate, I just figured it would not give me any benefit whatsoever with my application. Thank all of you again for the advice.
-Tom

No Problem on the advice and for what its worth I played with full bodied cars years ago and back then we called it " the back end is skateing " Nothing worse than having to drive the car thru the lights when it should be charging! Well now its a water surface and alot can be related!!! Mark

Yeah, no feeling like when I found the cause of the problem on the chevelle, ended up chucking a bolt out a control arm mount and rear end steering car left on throttle and right on decel. Scariest feeling ever. Nylocks, lock-tite, and double nuts and any other form of over kill and problem finally solved on the car. Now the boat.