Test tank design, please advise.

[Crab]

What would you use it for, Jeff?

It would be useful for idle-tuning only, IMHO.

Power on testing and throttle response, a lot of the shops have them.

 

[WFO Speedracer]

Ok heres my two cents and then back to vacation land,its nice and peaceful there.I worked at a few shops that had test tanks,it is almost impossible to make one that does not produce cavitation in the pump under load.Most of them spit out water everywhere,they are filthy and need a good filtration system to keep them clean.Also you might be running into a nightmare with EPA regs because of the oil residue that quickly builds up in the water.One shop had a fiberglass tank which didn't work at all,the other shop had a concrete back in tank,it worked somewhat better but wfo testing was impossible and water went everywhere if you even tried to go wfo with it.The back in tank had a pool filtration system which required constant maintaince and cleaning of the filters to keep it halfway within regs,also you would have to thoroughly wash any boat put into it because of the oily film it left on whatever you backed into it.They really were not that useful except for checking for leaks or part throttle testing purposes.

 

[FL-cracker]

Ive seen somewere someone just dug out there yard, and put some kind of tarp thing in there to hold the water :biggrin: that would be easy

 

[Big Kahuna]

Only tank I have seen up close was made out of steel, and it had baffles in it to slow the water down so it would not splash everywhere and to help with the cavitation.

 

[2nd nature]

Theres a local shop here dude made one out of fiber glass with a wave looking part in the back to throw the water back over. looked like a roll away dumpster.

 

[BlueBreadTruck]

why not just a larger round tank? the water would just circulate and you could go WOT.

The larger round fiberglass tanks they use to spawn fish would work great!

 

[WFO Speedracer]

You may not think the thread link below relevant,I think it is enjoy.We now return you back to your regularly scheduled programing.


http://www.pwctoday.com/showthread.php?p=1113671#poststop

 

[DBLOCK]

Don't know if anyone's suggested this yet, but why not just nose in to the dock (like I did today at Goodwin)...?

I was able to adjust my carb while testing in water...!

 

[Crab]

The tank of my dreams.....

http://cgi.ebay.com/ebaymotors/Test...QQihZ013QQcategoryZ124115QQrdZ1QQcmdZViewItem

 

[yamaslut]

I could design a tank that would have no problems w/ cavitation...

All you would have to do is basicly have two tanks in one w/ various baffles... It would be simple to design... Your intake side of the pump would be on the supply water side, while the the discharge would be seperated by a wall w/ holes on the bottom... That way the water would shoot into the discharge side under power, the water would flow back into the supply side, while air released out the top through vents. It would be capped on the top, of course... I would make some sort of frrame to mount the ski to as well.... very simple and easy to make if you have time and money...

 

[waterbug]

I saw an add for something in an old popular mechanics magazine, it was an exercise swim tank, it propels water forward while you swim againsnt the current. Ill see if i can find it.

It's called The Endless Pool. Still in production and about $15000-$18000 installed. The house I just purchased last month has one.

 

[Mike Serlin]

Jetworks has a cool tank that has a duct in the rear that redirects the water from the jet through baffles and dumps it back into the front of the tank. It works great and very little water leaves the tank.