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bomoseen avy    25

quick update and I can post pics later for those interested. I saw the SV244 GSA post so I'm not sure if this info is applicable to the bigger brother. 

Got my third ride out with GSA system this am. Crew of 5. Spoke to Ryan and he recommended all lead in the back lockers, none up front. So 400# rear port and 320#rear strbd. Filled quickfills, both rear lockers and both mid seat bags. Boat struggled to get to 10.8. Emptied strbd mid seat bag half way. Still struggled to get to speed so emptied some of each quick fill (I think half?) until PP was able to catch up-speed 11 mph paddlewheel.

This was the best wave I've had so far after install. RPM's at 3500. Face of wave not as steep as I recall listed or with suckgate. I still haven't experienced "crazy push" over the suckgate but this was a very enjoyable wave and could easily ride the back of the wave without shooting out. My son (6'4" 170#) liked it as well as suckgate wave felt he had to try less hard for airs.

Obviously will need more tuning but I'm wondering if slamming with weight is actually counterproductive. I'm going to try NOT filling mid seat pro bags next time. If it wasn't such a PITA I might also take all the lead out and try just stock ballast.

After I fart around with that I might consider trying to decrease the tab deployment like MrWick. There is definitely a learning curve here, not without a little frustration/anxiety at spending $4K and drilling a bunch of holes in your boat.

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InfinitySurf    187

Interesting, since I have heard from others and seen myself on a couple boats that GSA wave gets better as you add weight (all hulls are a bit different regarding whether they like bow weight or not and also depends on how much total weight you are running). There is no doubt that every boat is slightly different depending on hull design and they product the best wave at a specific list and yaw...once figured out, the further you sink the hull (within reason), as long as you keep it proportionate so list/yaw stay the same, wave should just get better with tab system. Sounds like you may need to prop down so you can push the weight. 

On deployment angle, once its set to "surf left", or whichever....cant you use the center dial knob on control panel to then fine tune the tab so you can see what decreasing deployment does a click at a time? That is how it works on my friends boat, his best wave is "surf left" and then 4 clicks up, tho I know that every boat is installed at slightly different degree so that does not mean anything to anyone else's boat, just mentioning that in case you wanna try it. No doubt that Ryan would know best what works, kindof surprised he does not have an area on his website that shows different model boats with pics, weight and other settings that worked best for the owners.

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bomoseen avy    25

Pretty sure running the 1847. I say pretty sure because I bought the boat from WETSU last year. I have a spare 1847 and I seem to recall he told me he had the exact same prop mounted. I have to get some goggles on and go on under the lift to confirm.

 I think I’m going to take a look at the system on the lift today with a helper running the tabs.  The center dial knob on the control panel (potentiometer)  does not have hard clicks on this model. I will set it all the way counterclockwise (surf) and slowly move clockwise (skim) to see if there is a deployment difference. In the water I have had the system set all the way from “surf” to “skim”  without a discernible difference. 

 Your website idea is a great one. I’m sure that would save Ryan a lot of phone calls and texts also. I reached out to synergytogo to see what his set up is as he seems to have a wave he’s really happy with.  Ryan also said the less tab in the water the harder the wave will push. You will need more weight in the rear compared to a gate system but not less weight overall. 

 

FF00C6B0-6BCF-4681-88C0-07AD94C77432.jpeg

AA32E022-AA68-412A-931D-9178AC8E1A6F.jpeg

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InfinitySurf    187

I run the 1847 and the 1433 (both the same size @ 14x14.25, just different cup) on mine SV244 as the low end torque prop, should give you plenty of grunt, its definitely the best prop with my boat/engine combo since I can surf at well over 13mph with all ballast loaded (that is not what I do, but was curious one day and was able to get it to around 13.5mph fully loaded)....and 40mph WOT unloaded. So you may wanna confirm since if its not the 1847, your spare may get you a little better lower end to push you to surf speed since you mentioned it struggled with all the weight being loaded at rear. Sounds like Ryan confirmed you still want as much weight as possible, you just may want more rear weight compared to best wave you had using suck gate? Maybe after you get setup on next session, if you have like 4 adults with you.....have them move into different places of the boat as a group and spread out to see what it does, may be quickest way to see what seems to get you best results without having to drag the lead around multiple times.

Wave shape looks nice! Love to hear back what you find when you start moving that center dial since its different than the "Wave control", if I were to get the GSA system, it would be really important to me that tabs are adjustable since the chance of the angle being correct at first try is slim odds. I was hoping that at some point he would also have a way to "program" the controller so once you find the perfect angle for your boat on regular AND goofy sides....you can program the controller to default to that deployment angle every time (and then still manually adjust from there), cause I have seen what a PITA it is on friends boat to always have to click it back those "4 clicks" when you are doing quick surf transfers back and forth.

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bomoseen avy    25
Posted (edited)

tried to embed a quick video of potentiometer function but didn't work. I'll try later

Went out last night didn't fill mid seat pro bags- left lead in place, filled rear locker PNP's and quickfill. Boat seemed very rear heavy couldn't get nose down as much as usual with A plate so bumped speed up to 11.4 with decent results. Lot of wind so chop made it challenging. Will keep trying but son 3

 

Edited by bomoseen avy
didn't embed

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Mrwick    58
Posted (edited)

So it seems we are both at the same point in our journey with our GSA systems....I am thinking just like you that there is potential to ditch most of my 900 lbs of lead and just use hard tanks and PNP bags in the rear.  My best waves to date are with all factory tanks empty and just PNP bags full plus 800 lbs of lead in rear lockers and 100lbs of lead in the bow.   I also agree with Infinity that we both could probably use a little more aggressive prop to help us with our lack of speed with more weight on board.  With a little more prop and more weight, I think you can have your tabs deployed at a +1 to +3 degree angle and have a killer wave....my best wave to date is at a deployed angle of -1.....Ryan said the only part of the tab that should be doing any work is the thrusters.    From what I’ve seen, this is probably true.

Edited by Mrwick

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bomoseen avy    25

Can u explain the tab deployment angles? Just want to confirm are those tab angle numbers relative to the hull using the angle finder app like on the install videos? Or is that "clicks" like Infinity was describing.

Thanks for your input on the journey. I'm out of town for a week so further experiments will be put on hold temporarily...

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InfinitySurf    187

Man, that would be pretty awesome to have a killer wave with less weight, rather than more. Boat does not work as hard, more fuel efficient, more storage in boat, etc! Perfect wave shape with great push beats bigger wave anyway

In above video, that cant be all the movement there is in the tab, is it? Guessing it had already come down from its fully retracted position? 

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Mrwick    58
10 hours ago, bomoseen avy said:

Can u explain the tab deployment angles? Just want to confirm are those tab angle numbers relative to the hull using the angle finder app like on the install videos? Or is that "clicks" like Infinity was describing.

Thanks for your input on the journey. I'm out of town for a week so further experiments will be put on hold temporarily...

So 0 degrees deployment would be the tab being perfectly level with the bottom of the hull.  Negative  deployment would be angling downward into the water.  Positive deployment would be angled up towards the swim deck.  Different people describe this differently but I am a old toolmaker that uses above the “0” plane as positive and below the “0” plane as negative.  I’ve read over on the Malibu forums that some of those guys are running positive 1 to 4 degrees loaded down with weight.   The “clicks” are equal to about a degree in a half on my boat. On the dial between “surf” and “skim” there is only about 6 degrees of movement 

Edited by Mrwick

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Mrwick    58
10 hours ago, InfinitySurf said:

Man, that would be pretty awesome to have a killer wave with less weight, rather than more. Boat does not work as hard, more fuel efficient, more storage in boat, etc! Perfect wave shape with great push beats bigger wave anyway

In above video, that cant be all the movement there is in the tab, is it? Guessing it had already come down from its fully retracted position? 

I think ultimately more weight  probably = bigger wave but if I can keep replicating the wave I have now, I think I can be fairly happy.  It’s about as tall as my loaded listed wave and has good push back 20 to 25 foot.   If I can ditch the near 1k in lead, the boat becomes easier to tow.  The fact is I want an Ri wave but thats not going to happen out of my 5 yr old “value” surf boat.  If I can get close and the wave is easy to achieve, I’ll consider that a win.  Plus I only have 50k invested!

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bomoseen avy    25
11 hours ago, InfinitySurf said:

Man, that would be pretty awesome to have a killer wave with less weight, rather than more. Boat does not work as hard, more fuel efficient, more storage in boat, etc! Perfect wave shape with great push beats bigger wave anyway

In above video, that cant be all the movement there is in the tab, is it? Guessing it had already come down from its fully retracted position? 

so in the vid I had set the unit to surf goofy, so the port tab was deployed to full in "surf" mode. Then had my son move dial to full skim. You get a little movement then no movement but a lot of actuator firing. Then had him move all the way back to surf mode. Lot of movement in the potentiometer dial but tab obviously doesn't respond through that whole range.

 

Not yet sure if more fuel efficient. Still runs at 3500RPM. When I get back I might retract tabs and try suckgate again to see what my RPM's are running

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bomoseen avy    25
38 minutes ago, Mrwick said:

So 0 degrees deployment would be the tab being perfectly level with the bottom of the hull.  Negative  deployment would be angling downward into the water.  Positive deployment would be angled up towards the swim deck.  Different people describe this differently but I am a old toolmaker that uses above the “0” plane as positive and below the “0” plane as negative.  I’ve read over on the Malibu forums that some of those guys are running positive 1 to 4 degrees loaded down with weight.   The “clicks” are equal to about a degree in a half on my boat. On the dial between “surf” and “skim” there is only about 6 degrees of movement 

awesome!! TY!!

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Mrwick    58
8 minutes ago, bomoseen avy said:

so in the vid I had set the unit to surf goofy, so the port tab was deployed to full in "surf" mode. Then had my son move dial to full skim. You get a little movement then no movement but a lot of actuator firing. Then had him move all the way back to surf mode. Lot of movement in the potentiometer dial but tab obviously doesn't respond through that whole range.

 

Not yet sure if more fuel efficient. Still runs at 3500RPM. When I get back I might retract tabs and try suckgate again to see what my RPM's are running

My RPMs have not changed from listed to GSA.  11 mph is 3100rpm.  It is definitely lugging the engine more though.

Edited by Mrwick

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InfinitySurf    187
11 hours ago, bomoseen avy said:

so in the vid I had set the unit to surf goofy, so the port tab was deployed to full in "surf" mode. Then had my son move dial to full skim. You get a little movement then no movement but a lot of actuator firing. Then had him move all the way back to surf mode. Lot of movement in the potentiometer dial but tab obviously doesn't respond through that whole range.

 

Not yet sure if more fuel efficient. Still runs at 3500RPM. When I get back I might retract tabs and try suckgate again to see what my RPM's are running

Makes a lot more sense, don't think I have seen them out of water adjusting before just between surf/skim, so wasn't sure. Actuator did keep making noise for a few full seconds after tab stopped moving downwards, hopefully that is not bad for it. I would not know

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Mrwick    58
2 hours ago, InfinitySurf said:

Makes a lot more sense, don't think I have seen them out of water adjusting before just between surf/skim, so wasn't sure. Actuator did keep making noise for a few full seconds after tab stopped moving downwards, hopefully that is not bad for it. I would not know

Mine does the same thing

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bomoseen avy    25

So I think on the GSA install  video the recommended deployment of the tab is between 9 and 15°.  I checked my angles for deployment for surf and skim using the AngleFinder app  that was recommended for the install.  I think there is quite a bit of variance with it’s accuracy depending on the curve of the bottom of the hull and the area on the tab that is measured.  Anyway in full surf mode I got 8° of deployment and in skin mode I measured 11° of deployment.  During the install I had assumed that more deployment was desirable. Would’ve been useful information to know as it may have affected where I mounted the actuator 

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Mrwick    58
5 hours ago, bomoseen avy said:

So I think on the GSA install  video the recommended deployment of the tab is between 9 and 15°.  I checked my angles for deployment for surf and skim using the AngleFinder app  that was recommended for the install.  I think there is quite a bit of variance with it’s accuracy depending on the curve of the bottom of the hull and the area on the tab that is measured.  Anyway in full surf mode I got 8° of deployment and in skin mode I measured 11° of deployment.  During the install I had assumed that more deployment was desirable. Would’ve been useful information to know as it may have affected where I mounted the actuator 

Lol.....Yep, I set mine to those angles as well. I called Ryan after my first outing and he told me this, “I wish you would’ve called me and I would have told you to use much less of an angle. “.    I believe every boat probably has a very different set up.  I don’t blame Ryan, but I do wish he would add to his instructions to advise him of your boat for specific angles of the tabs.

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