home made waterbox

[Billybo455]

i'm going to be making a waterbox this coming friday and was looking for some input. i ride an octane with an octane pipe, vforce 3's, higher comp, and a few other odds and ends. my factory box took a crap and i switched to a chambered tdr. worked great. switched to a stock rn and the ski felt like my stock blaster. the stock rn box completely kills a dry pipe. anyways...

my idea is for a basic three chamber setup. instead of doing small holes or a bunch of holes in general i was thinking of using some flat stock welded at a downwards angle for the first chamber. leaving about an inch between the flat stock and bottom of the waterbox. then hoping i can find the right combination of water to keep about a 1" of water in the bottom of the box. then i'll angle a piece of flat stock up with an inch gap at the top. this way it will create a small pocket of water in the base of the box for additional sound dampening and not to much back pressure. on the outlet side i'll also be using a nozzle to mist additional water in the exhaust.

i'm hoping about 2/3's th total volume of a stock rn box. my experience seems to point to dry pipe's not liking huge amounts of back pressure. i'm sure there is a fine line of chamber volume, backpressure and water for best performance. anyways, whatcha think? any ideas? it will be made out of aluminum.


thanks.

 

[LIVE2RIDE Powersports]

I have a chitty homemade waterbox i just pulled from a modded 750sx i bought, looks like a coffee can with outlets. LOL

I never rode it, but he said it hits strong. I will post a pic.

 

[kevbo]

You may run out of room for a good three chamber box. A good two chamber can be almost as quiet as a three. One of the best examples is the old 580-720 Seadoo box. It would be better to modify an existing tubular box than making one from flat sheets because they will fatigue very quickly unless the material is thick.

 

[Berky]

Yo Billybo, The three ,3/4 wall type box was loud but didn't have a spray bar in the box., dump high, pick up low like the big boat stuff has worked the best.

 

[Billybo455]

thanks for the response guys! tem, have you tried something similar to what i'm thinking before?

 

[Berky]

The one that had 3/4 wall didn't keep enough water in it to dampen the sound , but was made to run with very little water in it, it was just a bit less loud than a XM box, your center wall sounds like it's the whole taco as far as keeping the water level and sound level where you want with that design. I think it will work. It would be cool if you could open it up and tweek it easily.

 

[masterblaster]

interesting idea,At this point id trade a little power for a quieter ski though.loud is ridiculous obnoxious quick.Is it possible to make it as quite and still make more power>

 

[Billybo455]

yep, my three chamber box is quieter then a tdr and the power feels slightly better. pretty damn happy. ive been meaning to make a post about dry pipes and waterbox design, but i never have enough time. pm me if you want and i'll send you a pic of how it looks.

 

[kevbo]

interesting idea,At this point id trade a little power for a quieter ski though.loud is ridiculous obnoxious quick.Is it possible to make it as quite and still make more power>

Without a tuned pipe, more power with less noise is difficult. With a tuned pipe it is very easy. No piped ski needs to exceed stock noise levels.