Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 15-04-2015, 08:37   #31
Registered User
 
jheldatksuedu's Avatar

Join Date: May 2007
Location: On my boat, Manhattan, Kansas or LaBelle, Florida
Boat: 45 custom steel ketch-Steelin Time
Posts: 396
Images: 6
Re: Where to find the cheapest RO de-salination membranes

Quote:
Originally Posted by Canibul View Post
I'm in the same general boat, in that I need a decent watermaker between now and November and don't yet have the $ 4000 for a 20 gph one. This is not rocket surgery.
You don't need a 20gph system, you are in a 36 ft boat..... go back to study what you really need.

Listen to the naysayers, we are all smart people, I've taught engineering for 30 years, I also planned on building a watermaker, studied the systems, but I got lucky, I found a $5000 katadyn in a yardsale box for $10. I'll probably need new elements, that's what attracted me to this post in the first place. I've looked and I haven't found anyplace for cheap ones.

Salt water is tough stuff, and more tough at 1000 psi and higher flow rates. A cheap pressure cleaner is lucky to last 6 months as a pressure cleaner used 5 times, and that's with fresh water. I'm not saying you can't build one, but cheap, easy to fix, etc. is not going to happen unless you luck into a good sized comercial stainless pump. We are all trying to save you a headache, and offering our opinion. If a cheap one could be built, somebody would and you could buy them. I pinch pennies harder then anybody I know, and I also understand engineering. I also will bend over to pick up a penny on the ground, I expect I've got about 86 cents by now, might make a dollar before I die... I did find $40 once, and did my best to make sure I tried to find the person that lost it.
__________________

__________________
A bad day sailing is 100 times better than a good day at work. www.jheld.mysite.com
jheldatksuedu is offline   Reply With Quote
Old 15-04-2015, 09:20   #32
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Re: Where to find the cheapest RO de-salination membranes

you are wrong on both counts. I am not in a 36 ft. boat. I spent 40 years in the offshore/underwater business designing, building, and using underwater acoustic systems. I know a little about glass, stainless, anodized aluminum, seawater, and pressure vessels. O-rings. Connectors. Titanium. And I need a 20 gph water maker.

But I'm looking for a used one. I think you got me mixed up with someone who wants to build a cheap one from scratch. I don't do Harbor Fright.
__________________

__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 15-04-2015, 10:00   #33
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,055
Re: Where to find the cheapest RO de-salination membranes

Canibul-
You may not find a lot of used ones. I suspect people who upgrade, upgrade by swapping their whole boat for a bigger one, since there's all that plumbing and assembly to change if "needs" change.
But the marine consignment and secondhand shops, like Sailorman in FLL, might have used units from boats that were insurance totals, or whatever other source. I'd try calling around to some of those guys, since they often will suggest someone else to try calling for something they don't have.
__________________
hellosailor is offline   Reply With Quote
Old 16-04-2015, 01:03   #34
Senior Cruiser

Cruisers Forum Supporter

Join Date: May 2013
Location: Oregon to Alaska
Boat: Wheeler Shipyard 83' ex USCG
Posts: 1,708
Re: Where to find the cheapest RO de-salination membranes

Ebay or Amazon
__________________
Lepke is offline   Reply With Quote
Old 16-04-2015, 06:35   #35
Registered User
 
jheldatksuedu's Avatar

Join Date: May 2007
Location: On my boat, Manhattan, Kansas or LaBelle, Florida
Boat: 45 custom steel ketch-Steelin Time
Posts: 396
Images: 6
Re: Where to find the cheapest RO de-salination membranes

Quote:
Originally Posted by Canibul View Post
you are wrong on both counts. And I need a 20 gph water maker.

But I'm looking for a used one. I think you got me mixed up with someone who wants to build a cheap one from scratch. I don't do Harbor Fright.
I was just going on your description, 12m sounds like 36, actually closer to 40 I didn't put it to a calculator, but still most in a boat that size don't need 20gph. The rest of my comment was not necessarily aimed a you, but somebody that thinks they can get by with a cheap pressure washer pump designed for fresh water. They also often haven't figured out the capacity they really need, they think about somebody taking a luxurious shower, and not about having any tanks to spread the load on a smaller system.

As for finding a cheap system, that and the word marine are mostly mutually exclusive. Most Marine salvage shops I have been in, charge as much as they can, they price things so it hurts, hurts a lot, you are almost always considering that for 40% more I can get new with a warranty, and your are probably correct. If it is something with moving close tolerance parts definitely correct. The only cheap salvage is if you are doing the salvage work yourself. I have found that eBay is good for larger marine equipment, people that have a million dollar boat normally don't search on eBay to find a bargain, they get out their gold card and buy new and then pay somebody to install it. EBay is not cheap when it comes to time invested, you have to spend the time to make up a good automatic search that weeds out all the chaff, and then check your email every day, and look at what the search finds, then decide if it is what you need, how much it is worth and probably have a sniping program, often ending up with nothing for all the time invested. Somebody else just bids a little bit more. There is no free lunch, except maybe at a church....
__________________
A bad day sailing is 100 times better than a good day at work. www.jheld.mysite.com
jheldatksuedu is offline   Reply With Quote
Old 16-04-2015, 06:46   #36
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Where to find the cheapest RO de-salination membranes

Quote:
Originally Posted by jheldatksuedu View Post
but still most in a boat that size don't need 20gph.
What does boat size have to do with water usage? Usage is more determined by user-preference, activities, cruising grounds, etc. The only place where the size of the boat could matter is in washing down the boat - where the difference between 35' and 55' is minimal.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 16-04-2015, 07:06   #37
One of Those
 
Canibul's Avatar

Cruisers Forum Supporter

Join Date: Sep 2006
Location: Turks and Caicos Islands
Boat: Catalac 12M
Posts: 3,209
Re: Where to find the cheapest RO de-salination membranes

Quote:
Originally Posted by colemj View Post
What does boat size have to do with water usage? Usage is more determined by user-preference, activities, cruising grounds, etc.

Mark
no kidding. Put several women with long hair, wardrobes, and a washing machine on board. Add a dog. THEN tell me about your fresh water usage lol...

I looked at several used systems on eBay, and quickly realized that they looked pretty neglected even in the photos. So add the immediate cost of new membranes and a rebuild kit to any eBay system, I suppose.

Can someone point me to a good pro/con write up on 12 volt vs 110 volt watermakers?
__________________
Expat life in the Devil's Triangle:
http://2gringos.blogspot.com/
Canibul is offline   Reply With Quote
Old 16-04-2015, 07:51   #38
Registered User

Join Date: Mar 2015
Posts: 25
Re: Where to find the cheapest RO de-salnation membranes

Quote:
Originally Posted by Captain Bill View Post
Odd that you would suggest he go forward with crap pumping hardware when you chose instead to do it with an actual water maker pump. No one said you can't build your own water maker, but using components that were never designed to be in contact with high pressure salt water it is simply not going to last. I have no doubt one can build a more efficient water maker than some commercial units. Some of their decisions are based on marketing where you can make decisions based on function if you choose to do so such as more direct line flow routing because you are not trying to make it fit in the smallest possible box.
I prefer to communicate by pointing out what does work rather than jumping up and down on somebody's ideas. Sorry that you find that odd.
__________________

__________________
matureee is offline   Reply With Quote
Reply

Tags
cheap

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Housing for Watermaker Membranes Mark10 Plumbing Systems and Fixtures 24 02-08-2014 22:51
Winterizing RO membranes phorvati Plumbing Systems and Fixtures 1 26-09-2012 23:39
Orientation of Membranes in Schenker 60 RO bludden Plumbing Systems and Fixtures 3 29-02-2012 08:32
Testing Membranes wingover Plumbing Systems and Fixtures 16 15-01-2011 10:03
Village Marine Membranes phi3984 Plumbing Systems and Fixtures 5 16-05-2009 07:07



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 09:58.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.