Finally pulled the Trigger on a GSA system.

[ragboy]

Can't wait to see. We are planning a similar project for fun. ;-)

[Thegerman618]

Well....I have contact Ryan at GSA for guidance I/We are at a loss at this point.

Spent the last 2 days on the water and the good news, BOAT RAN GREAT!

We went backwards with the wave quality over the weekend. I am starting to believe that this system is not ideal for this boat, with the new prop I we had roughly 4000lbs of ballast. The wave was flat, ugly, no push, and soft. There were instances where the wave "looks" like its okay but as soon as your get on a board there is NO PUSH and its slow.

We have run all the speeds from 10-15mph with 11.2 seeming to be where it "looks" okay but no push and soft. I know from experience this boat likes 12.4/12.6 to get the best wave. We ran 200lbs and 500lbs in the bow, on different setups with about 1700 in each corner in the rear. Typically anything in bow over 300lbs this boat did not like, though as we added bow weight it seemed to stiffen up the wave. I will post some pictures, but please keep in mind that pictures are deceiving, trust me! When you see it, you think okay looks good, ya Not so much unless you like watching boats drive away from you. Stand by for some photos.

I am not giving up on the system just yet, as I spoke with Ryan at GSA today and has assured me the boat WILL produce but he wants me run a few test for him. So back to square one! As long as I have a tsunami chasing me by Memorial Day I will keep working it. Otherwise its gel coat repair and back to the list.

[Thegerman618]

IMG_1254.jpgIMG_1257.jpgIMG_1256.jpg

[UNSTUCK]

Well, Shoot. This isn't what anyone wanted to hear. I'm very familiar with this disappointment though. Keep trying.

This has me wondering about slappers now.

[talltigeguy]

German,

So you have 900 pounds up front and 3400 in the back of the boat. I think you should try to get a lot more up front and see how she does. IIUC, the convex hull is going to love a higher percentage of bow weight than that.

900/4300 = 21% of your weight up front. And your rear weight is very far back in the corners with custom sacks, it is not like a big sack on the seat or the floor, so the weight is even more biased to the back than guys who lay them on the floor. The tongues of the sacks stick forward, but still, I would not hesitate to empty some back ballast and move it up front if you can.

Plus, it sure does not look like ideal conditions, quite a bit of chop. Shouldn't make too much difference on a surf wave, but it will make some trouble.

[dakota4ce]

What is the deployment angle of the tabs when they are down?
I discovered that the F24 really likes 9-10 degrees. The wave gets steep, tall, strong.
I don't think its time to take it off yet.

[dakota4ce]

I am not sure bow weight is your answer quite yet.

I have a hunch that you are deploying the GSA tab too far. Possibly. If you start with the dial all the way to the right when you surf, get underway, then start dialing it back to the left a click at a time, what are you getting? Keep your cav plate up (bow high). Also, try favoring the surf side with weight by 3-400# (maybe a couple of guys).

Or, bring that thing up here to SD and we can work on it. I know you like the drive!

[Mgigs7]

I'm sure you are getting a ton of try this do that so me adding a little more should only help I think you have too much weight up front. If the wave is flat and no push as you stated, then try no weight up front and add a little as you go. You need to try extreme variations to find the balance. The tabs push the bow down as is so more weight up front will flatten it out even more. Good luck. PS I went through the same testing two years ago so I get it.


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[Germaine Marine]

I am not sure bow weight is your answer quite yet.

I have a hunch that you are deploying the GSA tab too far. Possibly. If you start with the dial all the way to the right when you surf, get underway, then start dialing it back to the left a click at a time, what are you getting? Keep your cav plate up (bow high). Also, try favoring the surf side with weight by 3-400# (maybe a couple of guys).

Or, bring that thing up here to SD and we can work on it. I know you like the drive!

He has 10 degrees of deployed angle......... I think the wave looked best at around 3/4 of that. We tried all of what you mentioned trust me and then about 30 other different setups. This isnt happening from lack of weight or weight not in the correct spot. Its either a plate angle issue or the standard was just too high given his stellar listed wave.


I dont know what the GSA guys told him but I think hes going to try and get more down angle and see if thats the fix.

[Germaine Marine]

German,

So you have 900 pounds up front and 3400 in the back of the boat. I think you should try to get a lot more up front and see how she does. IIUC, the convex hull is going to love a higher percentage of bow weight than that.

900/4300 = 21% of your weight up front. And your rear weight is very far back in the corners with custom sacks, it is not like a big sack on the seat or the floor, so the weight is even more biased to the back than guys who lay them on the floor. The tongues of the sacks stick forward, but still, I would not hesitate to empty some back ballast and move it up front if you can.

Plus, it sure does not look like ideal conditions, quite a bit of chop. Shouldn't make too much difference on a surf wave, but it will make some trouble.

He had 0, and as we added weight the wave got better. We ended up with 600 for the day.

[Germaine Marine]

I'm sure you are getting a ton of try this do that so me adding a little more should only help I think you have too much weight up front. If the wave is flat and no push as you stated, then try no weight up front and add a little as you go. You need to try extreme variations to find the balance. The tabs push the bow down as is so more weight up front will flatten it out even more. Good luck. PS I went through the same testing two years ago so I get it.


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He had 0. As we added it got better. Adding bow weight wont flatten the wave out necessarily. My z3 needs 800 up front, with 1400 in each rear corner...... Think displacement. If you have enough rear weight which he does, adding bow weight will only make it better.

[dakota4ce]

He has 10 degrees of deployed angle......... I think the wave looked best at around 3/4 of that. We tried all of what you mentioned trust me and then about 30 other different setups. This isnt happening from lack of weight or weight not in the correct spot. Its either a plate angle issue or the standard was just too high given his stellar listed wave.


I dont know what the GSA guys told him but I think hes going to try and get more down angle and see if thats the fix.

That's disappointing. I had a maxed 24Ve listed wave and my F24 GSA crushes it. Hopefully a combo becomes apparent.


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[dakota4ce]

Is the swim platform playing a negative role?


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[Germaine Marine]

Is the swim platform playing a negative role?


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I dont think so, I saw the smooth roll that I saw with his listed wave, no weird lines other then once or twice when we had that gnarly "indent" system boats see when plate angle/taps angle are fucked or the offside weight is incorrect. The whole thing was just surprising given the weight he had on board. A monkey should have been able to get something really solid. In my opinion it wasnt horrible, just high expectations given his listed wave......

[dakota4ce]

It looked flat and Malibu-y.


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