propwash

[divetech]

HI ALL

can any one help me with making a propwash.

if you have any plans on making one i would be wery greatfull.

Best regards
Kristian

[FISHEYE]

do you want to make one for a boat? if so is it a V-drive or a outboard or inboard outboard?
or do you want to build a free standing unit?

[divetech]

Hi FISHEYE

Tanks for your reply. her is a bit more info ;-)

we have a 65 feet boat with to inboard volvo's 350 HP each

we where thinking in making one for the boat.

what is the max water dept for one do you know

you mention a free stranding unit that sounds interesting.
have you made one !

[FISHEYE]

for motors that size,you would want to build 2 mailboxes,max depth would be 50 foot,it would cost you around $10,000 each to have them made and fitted to your boat,where is the boat located?
we built 1 stand alone blower useing a 18hp lawnmower motor,its for shallow use only,we tested it out last weekend,started out in 4 feet of water an it blew a hole down to 18 feet in less then 15 min,we have this one mounted in between the hulls on a pontoon boat.swinging a cut down 10 inch prop.

[boatwatch]

Whoaaaa right on , who looking for what here , i have three mailboxes, one for each of my tenants i will gladly sell those , as bill comes here every month sure the tenants will sell there also ,, lmao P.S
A LEAVE BLOWER WORKS GREAT , LOL

[wreckdiver1715]

Mailboxes are not cheap, and with the boat you describe, I would think that you would not want to hang any old blower off the stern. In any case try these links. Also try the folks at treasure coast scoops; they have been making blowers for the folks in Sebastian for years.
http://home.att.net/~EnRada/foresail.htm#BLOWERS
http://www.techdivetools.com/dig/dredges.html

Q

[FISHEYE]

Cornelius,
you cant buy large diameter round aluminum tubing,you need to get 3/8" sheet,have it cut,then rolled then tig welded, it all has to be custom fit to the boat,i assume this 65 foot boat is in the water,so that means a diver will have to go in the water to take measurements off the prop,shaft,rudders,plus fittings will have to be installed in the hull under the boat as well as on the stern,not a easy job while working under water,plus if they decide to have the boat hauled out,that would cost them over 1000 bux,then you have boat storage for the lenth of the time it takes to have the blower custom made and fitted to the boat,plus they may want to scrape and repaint the hull while its out of the water,more time,you have labor too,plus travel time,lots of fuel,an gas isnt cheap these days.in about a month i have to drive 4 hours to the keys to HRD's boat,thier blower is sitting on the bottom of the canal where thier boat is moored,the brackets that held it on snapped (poor welding,i didnt build thier blower)the last time we were out on one of the 1733 fleet wrecks,i have to float it to the surface,tow it across a canal,have a crane lift it out of the water into my truck,bring it back to my shop an weld new brackets on it,then take it back down there have the crane lower it to the stern use the winch on the boat with the help of 4-5 people an install it back on the boat