SE Trim pulls nozzle to one side when activated.

[OCD Solutions]

I know this has been discussed already but after searching for a few hours this weekend I never did find the answer so lets get it out here in it's own thread for others to find easier as well.

I installed my SE Trim system this weekend and found that the nozzle is pulled slightly to the right when activated, it is caused by the steering linkage. I played around with a few different styles of pivot attachments and locations with no real improvement. I swear somebody posted a solution in another thread, just couldn't remember or find it again. I also thought that the SE didn't have this problem; precisely one of the reasons I chose it over the C.A.T.S.

Another thought is that while it looks like it is quite a bit, does one even notice it when riding?

Thanks guys

 

[Big Kahuna]

yes, the steering cable can pull it to one side.

 

[OCD Solutions]

yes, the steering cable can pull it to one side.

Is there a fix or does one just live with it?

 

[Big Kahuna]

other than offsettting your steering to the left, but then our steering is off. I dont think it really effects anything when your actually riding. May even stay straight because of the flow going through it.

 

[SuperJETT]

Your pivot bolt needs to be centered vertically on the nozzle for it to not pull one direction or the other. That's exactly why I relocated my steering cable on my new hull---it clears the pump completely now so I can put the pivot where it's supposed to be.

Your pivot is probably on the bottom of the nozzle attachment arm, yes?

 

[OCD Solutions]

I tried it on the top and bottom, same effect, It looks like I would need to relocate the steering cable and thru hull fitting further up in the hull so it's more horizontal with the pivot ball and maybe even slightly higher so it's in the middle of the sweep. Is that what you did Jett?

 

[Big Kahuna]

I tried it on the top and bottom, same effect, It looks like I would need to relocate the steering cable and thru hull fitting further up in the hull so it's mnore horizontal with the pivot ball and maybe even slightly higher so it's in the middle of the sweep. Is that what you did Jett?

Answer this, does it actually effect your riding?

Darin did just that, but his hull was totally split apart.

 

[OCD Solutions]

Answer this, does it actually effect your riding?

Good Question, and that's exactly the answer that I'm trying to find out. I haven't ridden it yet to see how much of an effect it has if any. I was hoping for more guys to chime in and say that you just don't feel it so don't worry about it. :biggrin: Meanwhile if there was a simple solution I'd get on it this week while I'm not able to ride anyway.

 

[SuperJETT]

Answer this, does it actually effect your riding?

If you're headed straight at a wave for a backflip, and pull the trim then nail the gas, it will put some rotation into the ski that you don't expect.

 

[Big Kahuna]

If you're headed straight at a wave for a backflip, and pull the trim then nail the gas, it will put some rotation into the ski that you don't expect.

True, if it turns the nozzle enough, his may not be turning the nozzle enough to effect the attitude of the ski as it leaves the setup wake or wave (ocean).

 

[OCD Solutions]

I'm guessing mine is somewhere between 10 and 15° of deflection from center.

 

[Cannibal]

Do you have a picture of your nozzle? When I look at a stock nozzle, the tab the ball mounts to is really low, however, when I look at my ProTec nozzle, the tab is much higher, and when the ball is mounted to the top of that, it's even with the pivot bolts of my trim ring.

If your pivot ball is not within the same plain as your trim pivot you will get some deflection because the ball is trying to move away from the pump but the steering will not allow it.

You may need to try a different nozzle or add some spacers to move the pivot ball up some.

 

[OCD Solutions]

Do you have a picture of your nozzle? When I look at a stock nozzle, the tab the ball mounts to is really low, however, when I look at my ProTec nozzle, the tab is much higher, and when the ball is mounted to the top of that, it's even with the pivot bolts of my trim ring.

If your pivot ball is not within the same plain as your trim pivot you will get some deflection because the ball is trying to move away from the pump but the steering will not allow it.

You may need to try a different nozzle or add some spacers to move the pivot ball up some.

I'll try and snag some pics tonight, I added some washers to help clear the water fitting on the side of the pump but I went down when I actually need to go up over the top of it if possible. I think I read somewhere that someone had actually tapped in a new water fitting lower and had shaved the OEM 90° fitting off for clearance.

 

[Cannibal]

I just got done having a cooling fitting added to the left and the hole on the right welded up after I removed the 'boss' so now I have 2 on the left and nothing to obstruct my steering cable on the right. I also moved my steering tube up in the hull when to where the old cooling line was. This should really help out my trim. I'll snap some pics so you can see what I mean.

 

[Cannibal]

So here's my modified pump and reduction nozzle. The reduction nozzle has had the syphon bilge port removed and welded up along with a ring installed that adds the needed spacing for the trim ring and covers the original holes. It will also allow me to bore the reduction nozzle if needed. I have opened it up about 1/16" so far just to clean up the area.

Here you can see that my pivot ball aligns with the trim ring pivot so the deflection will be minimal if any.

You can see the original locations for both ends of the steering tube. The bulkhead one is filled (pinkish) and the pump well one is still open because there will be a Versiplug in it.

Here you can see the steering cable will be unobstructed. You can also see the original hole for the steering tube and it's new location.

 

[CARBONX2]

On the Kawi the ball faces down, you have it right for the Yami.
Shouldn't deflect too much as is but the socket on the end of the cable might be binding on the neck of the ball, need to make the hole a bit oval.

 

[Big Kahuna]

how much to do the mod. I assume your doing that to the 61x nozzle.

 

[Cannibal]

I don't know what nozzle that is, but it's from a 91. Not sure the differences between them.

Unfortunately I don't have any way of welding the aluminum so I sent it with my step-dad who is the welder at a boat shop so he TIG'd it up for me at work. He said this stuff really didn't weld very well and was left with a lot pin holes in the weld. He didn't seem like he'd be willing to do more of them any time soon.

For the pump modification:
Check around for the cooling fitting. I made this one on the lathe, but I know I've seen them in Jegs and Summit and such in the cooling section made for guys who need to weld fittings onto their aluminum radiators or make homemade coolant tank and stuff. Then have a shop (or better yet a buddy) TIG it on for you. Drill the hole after the fitting is in place by threading a pipe fitting on and drilling through that. That way you leave the most material there for less shrinkage (aluminum shrinks a bunch when welded) and drilling through the fitting will save the threads.

For the reduction nozzle modifications:
This is a bit harder. The nozzle is actually tapered on that last couple inches as well, but it's minor. I used some 3.5" schedule 80 (3.364" ID and 4" OD) and turned the inside diameter out a bit and tapered it to fit the reduction nozzle. It was a very tight fit when I was done. I just tapped it on and had my step-dad weld it up.

Sorry I can't be of more of a service to anyone (especially since I'm unemployed and could use the $$$), but I just don't have the tools available to me to do it. The lathe is my step-dad's too. He doesn't care if I use it a little here and there, but if I started producing some parts on it, he might not be too happy. If there is enough interest, I'm sure someone on here will step up and offer these mods.

 

[#ZERO]

Nice welding :fing02:

If you turn the pump housing upside down the steering cable will clear the cooling boss fitting.

 

[Cannibal]

Nice welding :fing02:

If you turn the pump housing upside down the steering cable will clear the cooling boss fitting.

Well, he's a professional. These welds were good by his standard, but with this stuff we are talking cast aluminum of an unknown alloy. The more he worked it, the worse it got (more pin holes).

Turning that pump over should work for most people though. Good idea.