24v ultimate surf boat build questions

[duffymahoney]

So I am getting ready to buy a Tige 24v with the 380hp motor. My idea is that for the money it's about the best surf boat on both sides I can get.

I am planning on doing custom sacs, custom swim deck etc... I have a couple of questions and ideas. I plan on moving the batteries to under the observers seat then taking out the false back wall to make more room for bigger sacs. Any reason this wouldn't work?

On my current boat I also moved the engine walls closer to the motor. Is there any room on these boats? I gained 3 inches on my boat. Which is a lot of weight for the custom sacs.


With the false rear wall removed my math and measuring puts the custom sac in the roughly 1900 on the port and about 1800 on the starboard. The 24v lockers are huge! Then I am gonna do custom dual bow ballast I am planning on 400 each. That way I only fill surf side. Plus I have a 155 pound sac on the swim deck surf side, and it has 100 pounds of lead in it, so it weights roughly 240. Plus I have some Tige 2-100# lead bars (came as an option from our local tige dealer instead of ballast) they are wrapped in tige carpet. Pretty cool actually.

So surfing weight would be roughly 1900+400+200+245=
2745 per side! All hidden.

What prop should I get?

I noticed in different years the angle that the taps plate changed. Older ones when it's fully up it's about even. Newer they aren't as high. On my current boat having it fully up and more of an angle helps a lot with wave height.

With 2300 in the back of the boat how much should the dual bow ballast be? 400 maybe an overkill.

Anything I should know about the 24v and different years?

[Timmy!]

Nice setup! That should surf very nicely! I think an Acme 1235 should do the trick to get you out of the hole. Can't wait to see the wave!

[gwhite94]

Taking a picture of surfing that wave is a must....

[duffymahoney]

What about adding a switchblade to a convex hull? Anyone ever heard of someone with a tige doing that?

[Wakeman22]

Wow that would be a lot of ballast!!! My question back and to anyone else who would respond back is... At what point do you have too much wieght? I am also wondering about total wieght in water ballast and how that effects the wieght limit posted on the placard. Mainly I am wondering how to explain in a reasonable way to the local law why my boat is sitting so low in the water and heavily listed to one side. Just a thought...

[duffymahoney]

My local cops leave me alone. If he asked how much weight I was running I would probably lie and say like 750 or something.

Can anyone answer any of my questions?

[Duncan]

There is a natural limit built into ballast for surf wake -- the rear rub rail. For surfing, I think it is less an issue of as much ballast as possible as it is enough to sink the surf side enough for the water to kiss the rail. That extra 2 feet on the 24v is going to make it harder to heel over, so you might need all that weight after all. But not necessarily.

I think Ragboy has a ton posted for surf ballast config on his previous 24v. From memory, his 24v did not like front ballast. In contrast, an RZ2 almost requires it for decent pocket length.

[duffymahoney]

Well with the 24v you can submerge the rub rail and you should be good. Ragboy had a 24ve which is similar but not the same as the 24v. The 24v has the biggest lockers I have ever seen. Now I just need to cram those lockers with the biggest sac ever and we should have a good sized wave!


I'm not just looking for just a great wave, I am looking for the best out. Tinkering with boats is my hobby, I know it's a pretty dumb hobby, but I love it. My current boat, centurion avalanche throws an amazing wave, but I want something a little bigger and a littler taller with more hp so I am not running high rpms and burning tons of gas while surfing.

[chpthril]

Below in RED

So I am getting ready to buy a Tige 24v with the 380hp motor. My idea is that for the money it's about the best surf boat on both sides I can get.

I am planning on doing custom sacs, custom swim deck etc... I have a couple of questions and ideas. I plan on moving the batteries to under the observers seat then taking out the false back wall to make more room for bigger sacs. Any reason this wouldn't work? Why move 80 lbs of lead (i.e. 2 batteries) that's already located behind the wall? I'm not sure you will get enough water ballast there to justify moving the batteries.

Due to the sloping transom, the sac will be an irregular shape. Have you sketched out the sac and gotten with Fly High to see if they will build the sacs?

On my current boat I also moved the engine walls closer to the motor. Is there any room on these boats? I gained 3 inches on my boat. Which is a lot of weight for the custom sacs.


With the false rear wall removed my math and measuring puts the custom sac in the roughly 1900 on the port and about 1800 on the starboard. The 24v lockers are huge! Then I am gonna do custom dual bow ballast I am planning on 400 each. That way I only fill surf side. Plus I have a 155 pound sac on the swim deck surf side, and it has 100 pounds of lead in it, so it weights roughly 240. Plus I have some Tige 2-100# lead bars (came as an option from our local tige dealer instead of ballast) they are wrapped in tige carpet. Pretty cool actually.

Im guessing you are going to cut out the divider wall between the mid-ship locker and the bow storage? I haven't found anyone yet willing to nut up and do this

So surfing weight would be roughly 1900+400+200+245=
2745 per side! All hidden.

My , I would see what kind of wake that amount of ballast will produce before I spend the time and money on custom sacs and plumbing it all in with major mods.

What prop should I get? You may need to get a custom tweaked prop

I noticed in different years the angle that the taps plate changed. Older ones when it's fully up it's about even. Newer they aren't as high. On my current boat having it fully up and more of an angle helps a lot with wave height.

On the Tiges, they seem to like the plate down a little as ballast is added. Hard to say how the 24V will react with that amount of weight though.

With 2300 in the back of the boat how much should the dual bow ballast be? 400 maybe an overkill.

Anything I should know about the 24v and different years?

[duffymahoney]

1.Why move 80 lbs of lead (i.e. 2 batteries) that's already located behind the wall? I'm not sure you will get enough water ballast there to justify moving the batteries. With surfing I try to keep as little of counter weight as possible. Also the further back the weight the better. So moving batteries, which is easy and I like them better in the observers area should help get the biggest sac possible in there. I calculated that it would add some pounds to the sac. I don't have my original measurements though. But again the idea is most weight as far back as possible.

Due to the sloping transom, the sac will be an irregular shape. Have you sketched out the sac and gotten with Fly High to see if they will build the sacs?
Fly high does angles, but they charge you more. You could get away with square angles but it will not fill as perfectly which is the goal.


Im guessing you are going to cut out the divider wall between the mid-ship locker and the bow storage? I haven't found anyone yet willing to nut up and do this
What do you mean by this? My buddies 22v the observer area goes all the way into the bow on the port side?

On the Tiges, they seem to like the plate down a little as ballast is added. Hard to say how the 24V will react with that amount of weight though.

This angle seems to change with years. Having the plate down at all drastically affects wave height. Thus the bow weight to bring the nose down, still affects wave height, but not as much. I plan on changing the angle that taps is when fully up to a more extreme angle like the newer years.

So honestly my full idea is to modify the boat so that it has as much hidden ballast as possible with this hull. The only thing I am worried about is the cooler on the 24vs location. It's in a bad spot.

[duffymahoney]

Will the 335hp motor be enough with the right prop? Anyone know the torque differences?

[Surfdad]

Duffy! Welcome to the Tige family! We surfed an '04 24V in a contest on Elephant Butte reservoir in New Mexico seems like forever ago and that had the most amazing wake I had ever ridden at the time.

I'll bet you get yours dialed in nicely.!

[NICKYPOO]

I like your attitude duffy.

Have you called Acme on the prop issue?

[duffymahoney]

Surfdad,
You aren't in the Tige family anymore And I am still a proud owner of a centurion avalanche. From what I read the 340hp motor has about the same hp and torque at surf speeds as the 380hp motor.

[Surfdad]

Wrong Duffy, I still have the 23V! Tough market to sell a used boat.