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Moomba OEM Woofer Enclosure Install

Number9 commented on Wylie_Tunes's project in Sound System Projects

Awesome mod. Thanks for sharing

Homemade Surf Tabs

Rugger commented on Shoebox's project in Surf Devices

Do you know anything about metal work, Jeffo? JK!

Homemade Surf Tabs

Jeffo commented on Shoebox's project in Surf Devices

Great job!! Good write up also. thanks! i will be building a set in the near future.

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Moomba OEM Woofer Enclosure Install

Wylie_Tunes posted a project in Sound System Projects

For most Moomba owners of the past 6-7 model years with OEM woofer option, by far, the biggest complaint is the lack luster woofer performance. Sadly, its the woofer, mainly the brand, that gets the bad wrap. In reality, its the choice of Moomba, to cut a corner. The Kicker KM10 woofer is NOT a true infinite-baffle/free-air woofer, meaning, it works best with a small enclosure behind it. Moomba chooses to load it through the under helm facade, with no enclosure structure behind it. Further more, the facade is not even a complete wall. Its actually open at the top! This allows output off the back of the driver, to flow over and meld with the output off the front. This creates phase cancellation issues. This makes tuning correctly, nearly impossible. Sound quality and performance will suffer. It can also be detrimental to the woofer, leading to a mechanical failure and short life. The fix: small sealed or ported enclosure back loaded behind the facade and a proper amp tune. You can comfortably fit a small sealed enclosure between .8 and 1.0 ft3, depending on year, model and options, under the helm. The boat will retain the factory look with little no loss of leg room. The original facade is retained, with little modification. A larger ported enclosure will require more design and fab time, and result in some loss of some leg room under the helm. Installing an enclosure makes a world of difference in both sound quality and output. Construction finished, ready for sealing. Finished enclosure installed and facade and woofer back in place.

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New Ultralon Floor for 2003 VLX

Gravity commented on jfthunder's project in Flooring Upgrade Projects

Pm sent Thanks

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Homemade Surf Tabs

McCannLand commented on Shoebox's project in Surf Devices

That’s an awesome build and great write up, thanks.

Justin Benton joined the community November 2

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Shoebox started following Homemade Surf Tabs November 1

Homemade Surf Tabs

Shoebox posted a project in Surf Devices

I went round and round in my mind about whether to make a set of surf gates or tabs for my boat. Gates seemed easier, but when I made a ghetto gate to test the "proof of concept", the wave wasn't very good, and my boat didn't like it much. So tabs it is. I looked at the tabs that come on basically all the manufacturers that used them, and ended up essentially copying what's on the MB boats. I made about 100 drawings, and at least 3 cardboard mockups until I was happy with it, then gave those measurements to my buddy, who put them into CAD. I wouldn't recommend using the measurements in this drawing to make a set. This was one of my first drawings, and the measurements are pretty far off. I also made some cardboard mockup actuators, at retracted and extended length to see how everything would fit. They were a little flimsy, so later I made some out of paint stir sticks. We got the metal waterjet cut, bent at a local fabricator, and then welded them up. I could have saved about $150 by cutting everything myself and welding on the side pieces instead of bending them, but the finished product is much nicer this way. I also had to make the lower actuator brackets, which is of 2" square aluminum tube with one side shaved off. The tabs are 3/16" 5052 aluminum plate, roughly 17.5" wide x 21" long. Everything powdercoated satin black. Lenco uses #14 screws for their trim tab hinges, so that's what I was going to do too. They say to drill the pilot holes with a 3/16" bit. Drilling into the hull was more than a little nerve-wracking. First screw cracked the hell out of the gelcoat and froze in place about 1/2" in, and the head broke off. F*%k!!! I decided to leave that screw alone, and used #12 screws for the rest. I also had to use the Lenco remote gland seal kit to route the actuator wires into the boat, because where the actuators mount is below the floor in the lockers. Broke one screw on each of those too. 1" thick fiberglass does not like being screwed into. For controls, I'm initially using regular Lenco trim tab switches. I made a mounting plate to mount the switches in the huge hole left by the Sony remote next to the throttle. In a couple weeks a friend I made through another forum is sending me an arduino-based controller he built which will have all of the features of the Wake Logic setup, without the high price tag. I made a relay panel, for when I get the controller. The switches and Lenco wiring would work fine without it, but the controller can't handle that kind of amperage. The relay panel is behind the rear panel in my starboard locker. The first day of testing had mixed results. The wave forms almost instantly, and the shape is much better and more fun than the Nauticurl wave, but at the moment doesn't have as much push. I need to move weight around to see where it needs to be. (Most of this was written as I went, obviously I have made progress and know results of a lot of this. One thing here, was not playing enough with tab deployment. It was almost full deployment, 18 degrees down, for this initial testing) I need to remove some weight from the bow, because the tab pushes the nose down, as well as lists the boat. That may add some push. My biggest mistake was using aluminum hinges. That’s what MB uses, but I guess theirs are much thicker than what I used. My hinges started to bend, particularly at that one broken screw. I pulled the tabs back off, and was able to get that broken screw out. My buddy suggested we tap the holes for ¼”-20 machine screws, which is what we ended up doing. The threads are the same depth as the sheet metal screws, but there are many more of them, so the holding power will be much greater. I don’t know why Lenco and others don’t suggest doing it this way. I ordered some new, thicker, stainless steel hinges. They are significantly stronger and better. Got the boat back in the water for more testing after the hinge replacement. I moved all the lead I had in the bow to the floor in front of the rear seat on the surf side. I also initially only filled the bow ballast halfway. Nose was way too high, needed more speed and wakeplate full down. I filled the bow ballast the rest of the way, and really seemed to make a powerful wave. The proof is in the surfing, but I was the only one in the boat, so surf test would have to wait. (An updated note here again. I still hadn't fully played with tab deployment angles, so these still were not the optimum wave or weight placement.) So at this point, I started to A) worry about the length of these tabs and the forces being put on the hinge and transom, and B) wonder if a shorter, simpler tab would work as well. After all, the stock Moomba Flow 2.0 tabs are quite a bit smaller and work great. Started making smaller test tabs. There is be a 1.5", 30° bend where the line is on the right, both for rigidity and to help direct the water. No Waterjet this time, since they don't need to be quite so precise. Used a circular saw, and got them within 1/16". Not too bad. Once again, I made the lower actuator mounts out of 2" square 1/8" wall aluminum tube. This time I left a reinforcing piece on the top, to keep the sides from flexing in and tightening too much on the actuator. Smoothed everything out and rounded all the sharp edges, then started to test fit. I wasn't sure what angles I wanted the tabs to deploy. You can see the marks for various angles written on the plastic. I went to my local Moomba dealer and had the sales guy deploy a set for me so I could see. Moomba's max down angle is 30 degrees, but most seem to run them at 60%, so 20 degrees. So it gave me something to work with for setting my tab angles. I had originally made lower brackets that had a single hole for the actuator. But I decided I wanted to have some adjustability. I made a couple different versions, but ended up with a design I like. They have 4 actuator holes (of which only 3 are really usable) which will provide 18, 24, and 30 degrees of deployment. I also made it so I can move the mount itself a half inch to change the angles more. Tabs were bent to 30 degrees, holes drilled. I also made diversion fins for the bottom of the tabs, 2 on each. I'll see how these work, and may play with the angles a bit with those as well. They are currently set at 60° from the transom. For the first test surf, the wave felt better and larger than the black tabs. However, I wasn't sure if that was because of how the boat was weighted, tab angles, etc. What we ended up doing was a head-to-head test with both sets of tabs. I went out with some buddies (we all surf regular) to test both sets of tabs I made to see if one is better. We filled all the bags (1100s rear, 400 center, 750 IBS, and a 400 on the floor in the pass through) and 150 lead in each locker, 50 under right rear seat, 150 on surf side rear floor, 170 under bow filler cushion. So just about 4k total. 3 guys at 210ish and 1 girl maybe 140. The first set were the smaller of the 2. At 11.0 and wakeplate up, the wave was great, big with lots of push. For reference, my buddy in the pics is 6'2", 220+. Then we went back to the dock where I swapped out the starboard tab for the larger, black one. The pic shows the size difference between the two. We went back out and surfed the black tab, same weight and placement, just less gas. If I didn't tell you the tabs were different, you probably wouldn't know the difference. But the wave seemed a little bit larger, a little bit longer, and a little more push. It also seemed "harder" or firmer. It was kind of weird and took some getting used to. The most surprising thing was how little downward angle the tabs had for the best wave. I measured the silver set just before swapping out, and it was only 5° down. I wasn't able to measure the black set, but the angle was similar. Overall, I'm torn on which set I'm keeping. I like that the black set wave is a tiny bit better, but I also like how much smaller the silver set is. Decisions, decisions... So here's what I have in everything so far. Black tabs: Aluminum 3/16" plate - $120 2" square tube, 1/8" wall - $8 Waterjet cuts - $100 Bends - $37.50 Powdercoating - $80 Total: $345.50 Silver tabs: Aluminum 3/16" plate - $30 2" square tube - leftover from above 3 ft of 1" angle aluminum 1/8" wall - $10 Cutting/bending - $0 Polishing or powdercoating to come Total: $40 + finish Everything else: Hinges .09" stainless, 1/4" pin - $50 Lenco 101xds actuators - $360/pr Lenco trim tab switches - $70 Lenco cable extensions - $60/pr Lenco remote gland seal kit - $28 Misc stainless hardware - $50 Misc electrical - $50 3M 4200 sealant - $14 Extras total: $682

Ryan Van Leuven changed their profile photo October 28

Chase Burkhalter changed their profile photo October 28

Raisin' Cain started following More awesome MB Slappers October 16

More awesome MB Slappers

Raisin' Cain commented on Hyperryd's project in Surf Devices

Anyone have a source for some good hinges? I really like the ones on the white boat above.

Jimmy100 started following MB Slappers October 15

IMG_2905.JPG

cowwboy commented on Raisin' Cain's gallery image in Member Boats 'N Wakes

Who did your boxes? Do you have any issues with sound cancellation with the subs being at different depths? Love that you're keeping business local.

(NEW) Another Chance for a Free Dripless Shaft Seal! (ends Sept 30)

Rugger replied to Wake Garage's topic in Wake Garage Exclusive Promotions

Congrats Cowwboy. And thanks for playing, everyone.

(NEW) Another Chance for a Free Dripless Shaft Seal! (ends Sept 30)

cowwboy replied to Wake Garage's topic in Wake Garage Exclusive Promotions

WOOOHOOOOO

(NEW) Another Chance for a Free Dripless Shaft Seal! (ends Sept 30)

Wake Garage replied to Wake Garage's topic in Wake Garage Exclusive Promotions

Congratulations to @cowwboy !!! Winner of the second Glide drawing. Glide will contact you directly to ship the Glide kit! You have a fall/winter/spring upgrade project in your future.... great product and great upgrade.