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01-02-2014, 08:57 PM
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#1
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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Black & Gray Tanks
What would advantages & disadvantages be to having one 90 to 100 gal waste tank?
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01-02-2014, 09:08 PM
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#2
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Bus Crazy
Join Date: Apr 2010
Posts: 1,208
Year: 1999
Coachwork: Bluebird
Chassis: 3800 International
Engine: T444E
Rated Cap: 72
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Re: Black & Gray Tanks
Are you talking just one tank for back and grey water?
People do it , you will have more grey water and if your not carefull and the tank fills up and over flows in side it can be yucky if you have the black tank spilling out as well with 2 tanks if you had too you can empty the grey water into a pail and dump it.
it would be less work to install just on tank, I think its up to how you would want it, for me I like 2 tanks
gbstewart
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01-02-2014, 09:38 PM
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#3
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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Re: Black & Gray Tanks
Quote:
Originally Posted by gbstewart
Are you talking just one tank for back and grey water?
People do it , you will have more grey water and if your not carefull and the tank fills up and over flows in side it can be yucky if you have the black tank spilling out as well with 2 tanks if you had too you can empty the grey water into a pail and dump it.
it would be less work to install just on tank, I think its up to how you would want it, for me I like 2 tanks
gbstewart
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Yes I'm thinking of just one tank around 100 gal, I'm putting in a 100 gal freshwater tank, I already have a mercerating toilet for pumping into the tank & I'm planning on using another pump on the waste tank discharge because the perfect place for the tank is on the right side of the bus but I have a storage bay on the left where I'm wanting to put my discharge controls
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01-03-2014, 06:50 PM
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#4
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Bus Crazy
Join Date: Jan 2008
Location: Adirondack Mountains NY
Posts: 1,101
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Re: Black & Gray (& "Brown") Tanks
Quote:
Originally Posted by allwthrrider
. . . I already have a mercerating toilet for pumping into the tank . . .
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I think we need to come up with a fourth tank description - a "brown" tank! A "brown" tank would hold macerated waste products with no solids. If the macerator was not built into the toilet, one could put a small black tank right under the "drop" where it needs to be so that gravity does its job, and then chop/pump the contents into a large "brown" tank that could be located anywhere that is convenient!
__________________
Someone said "Making good decisions comes from experience, experience comes from bad decisions." I say there are three kinds of people: those who learn from their mistakes, those who learn from the mistakes of others, and those who never learn.
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01-03-2014, 08:46 PM
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#5
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Bus Geek
Join Date: Apr 2012
Location: So Cal
Posts: 3,227
Year: 1935
Coachwork: Superior
Chassis: Chevy
Engine: 317 ci/tid / Isuzu
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Re: Black & Gray Tanks
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01-04-2014, 05:19 PM
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#6
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Bus Crazy
Join Date: Apr 2013
Location: Colorado
Posts: 2,356
Year: 1993
Coachwork: bluebird
Engine: 5.9 Cummins, Allison AT1545
Rated Cap: 2
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Re: Black & Gray Tanks
the only draw back to a big tank is it needs room. most of the underbelly of my bus was taken up by other items... ie generator, batteries, spare tire carrier, stairwells and fuel tanks. i could only fit a small 40 gallon tank. i have 2 more fresh water tanks to work into my system, but dropped them out of the build for the space they consume.
it depends on your platform.... if you got the space.. bigger is better
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06-18-2014, 11:15 AM
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#7
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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Re: Black & Gray Tanks
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06-22-2014, 11:16 AM
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#8
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New Member
Join Date: Feb 2010
Posts: 8
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Re: Black & Gray Tanks
Have you considered a home made macerator? a common garbage disposal unit.
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06-22-2014, 03:21 PM
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#9
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Bus Geek
Join Date: Jun 2004
Location: Roswell, NM
Posts: 3,588
Year: 1986
Coachwork: BlueBird
Chassis: 40 ft All American FE
Engine: 8.2LTA Fuel Pincher DD V8
Rated Cap: 89
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Re: Black & Gray Tanks
Alternative is to buy one...
Three low cost macerators courtesy of Amazon.com
12V Macerator Water Waste Pump 45 LPM 12GPM Toilet RV Trailer Camper Marine Boat by AC AUTO $59.99 & FREE Shipping
Aidi 12v Macerator Waste Water Transfer Pump 45 lpm / 12 gpm RV Boat Marine DC $90.05 + $5.49 shipping
Johnson 12V Macerator Pump by Johnson Pumps $105.55 + $8.99 shipping
I have found that sometimes it is better to buy something new rather than build one from scrap/scratch. Of course that does NOT take into account if you need a customized item due to special circumstances. And sometimes you really just need to look up prices for what you are considering making just to see what the prices really are. It is surprising just how cheap you can buy a macerator for. On the other hand, it's amazing how expensive it would be if we were to buy power jacks for the bus rather than make our own (like over $1K per jack! I'm just way to cheap for that!). Do your homework! I had thought of going the garbage disposal route until I plugged a search into amazon.com just to see what I could save. Once I factored in having to buy either a used, possibly non-working garbage disposal or the cheapest/smallest new one at the store I work at ( $84.96 and then modifying it to work, buying a macerator made for the job looked more attractive. So use the internet and research prices.
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06-22-2014, 03:40 PM
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#10
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New Member
Join Date: Feb 2010
Posts: 8
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Re: Black & Gray Tanks
lornaschinske, you are spot on with your comments. A home made macerator is only inexpensive if one has a used one from say a known kitchen remodel, so they know it's good, and they have the skills and tools needed to build their own. for anyone else, the one's you showed would be the way to go. I guess I should have been a little clearer about that.
On that thought, another option is to check with boat salvage yards.(if you have one nearby) a lot of boats were equipped with macerators and many times they can be had reasonable.
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07-03-2015, 09:20 PM
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#11
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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I'm looking a possibly getting a killer deal on 150 ft of industrial grade collapsable hose problem is all the macerating pumps I can find have a outlet of 1 in & the hose is 1 1/2 in, what would be negative effect of stepping up to 1 1/2 in from 1 in off the outlet of a macerating pump.
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07-04-2015, 09:35 AM
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#12
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Bus Nut
Join Date: Apr 2010
Location: Lebanon, IN
Posts: 272
Year: 1998
Chassis: TC 2000 bluebird
Engine: 5.9 cummins
Rated Cap: 66
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Another option is to go with one gray tank and a composting toilet. More flexibility that way. My plan os for one 110gl gray tank and forgo the black tank altogethor. Saves a lot of plumbing.
Bill
MI
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07-04-2015, 09:55 AM
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#13
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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Quote:
Originally Posted by miltruckman
Another option is to go with one gray tank and a composting toilet. More flexibility that way. My plan os for one 110gl gray tank and forgo the black tank altogethor. Saves a lot of plumbing.
Bill
MI
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I've already have the tanks & the toilet
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07-04-2015, 10:05 AM
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#14
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Bus Geek
Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 23,764
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
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07-05-2015, 07:49 PM
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#15
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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Turns out it didn't matter anyways when my brother got to the auction it turned out to be 2 1/2 in hose
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07-05-2015, 09:34 PM
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#16
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Bus Crazy
Join Date: Feb 2012
Location: Salt Lake City Utah
Posts: 1,635
Year: 2000
Chassis: Blue Bird
Engine: ISC 8.3
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You're talking about discharge hose that lays flat when not in use, right? You should have bought it!
I have 20 feet of 1" flat discharge host for my macerator and it isn't big enough (diameter). It fits the discharge port, which is nice, but the trouble starts there. The pump wants to discharge so much that it makes the hose stand out straight. Because the hose doesn't have any form on its own it doesn't bend very well; the walls tend to collapse or pinch. The macerator is so eager to move a lot of volume that when it hits that slight restriction, the upstream hose inflates like a balloon and turns the pinch into a kink, making the problem even worse. It takes some doing once the pump is running to straighten the kinks enough to get some flow.
I like the flat discharge hose concept, but I haven't put enough thought into figuring out how to make it work. I'd like to use a short section, maybe 5-7 feet, for most dump needs and have a coupler so that it can be extended to 20-30 feet for special occasions. Maybe a chicago-style coupler like those used on large compressed air lines..? I'd love to hear your ideas about it.
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07-05-2015, 09:43 PM
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#17
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Bus Crazy
Join Date: Sep 2013
Location: Vacaville, Ca
Posts: 1,634
Year: 1988
Coachwork: Crown / Pusher
Engine: 8.3 Cummins
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Quote:
Originally Posted by family wagon
You're talking about discharge hose that lays flat when not in use, right? You should have bought it!
I have 20 feet of 1" flat discharge host for my macerator and it isn't big enough (diameter). It fits the discharge port, which is nice, but the trouble starts there. The pump wants to discharge so much that it makes the hose stand out straight. Because the hose doesn't have any form on its own it doesn't bend very well; the walls tend to collapse or pinch. The macerator is so eager to move a lot of volume that when it hits that slight restriction, the upstream hose inflates like a balloon and turns the pinch into a kink, making the problem even worse. It takes some doing once the pump is running to straighten the kinks enough to get some flow.
I like the flat discharge hose concept, but I haven't put enough thought into figuring out how to make it work. I'd like to use a short section, maybe 5-7 feet, for most dump needs and have a coupler so that it can be extended to 20-30 feet for special occasions. Maybe a chicago-style coupler like those used on large compressed air lines..? I'd love to hear your ideas about it.
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Wish you had told me this yesterday, the auction was today,, damn
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07-05-2015, 10:20 PM
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#18
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Bus Crazy
Join Date: May 2015
Location: Oklahoma aka "God's blind spot"
Posts: 2,446
Year: 1989
Coachwork: 1853FC International/Navistar
Chassis: 35' Retired Air Force Ambulance
Engine: DT466, MT643
Rated Cap: 6 souls and a driver
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Quote:
Originally Posted by EastCoastCB
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I can't see Ed O'Neill in any other production without stereotyping him as Al Bundy....same with Katey Segal as Peg Bundy
Bob Denver once said the Gilligan character ruined his acting career.
__________________
I once complained I had no shoes....
Until I met a man with no feet
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07-06-2015, 05:52 PM
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#19
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Bus Nut
Join Date: Nov 2013
Location: Gainesville. Georgia
Posts: 544
Year: 1992
Coachwork: bluebird
Rated Cap: 72
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Haven't gotten our waste tanks yet. Original plan was to have black/grey combo (1 tank). But I like what I've been reading.
If I was to go with 2 what would be the recommendation for sizes for black & for grey. Our water tank is 28 gal and all I know is that I want my waste to be slightly more so that I run out of water before I run out of room for waste.
We have a Jabsco crapper (marine crapper) and can limit the amount of water we use there. I've had thoughts of putting a mascerator in line and what I'm reading I can flip a switch and add grey water when I need or want to.
With our equipment would 5-10 gal for black waste be too small and maybe 20 gal for grey water? Or should we be staying with the black/grey combo
Hubby is installing crapper over drivers side wheel well and to put a tank right there in ront of the tires would be a little tricky cause I think the muffler is coming out right there.
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07-06-2015, 06:31 PM
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#20
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Bus Crazy
Join Date: Apr 2010
Posts: 1,208
Year: 1999
Coachwork: Bluebird
Chassis: 3800 International
Engine: T444E
Rated Cap: 72
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I would really try to put your toilet right above the black tank, nice straight drop, no bends or twists to have a clog. also easier to install.
gbstewart
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