| [GMCnet] Black water tank [message #288377] |
Thu, 08 October 2015 19:02  |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Netters
Does anyone sell a larger black water tank than stock that will fit under
our GMc's ...or...has anyone discovered how to enlarge the capacity of our
own??
Tks
Mike in NS
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
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| Re: [GMCnet] Black water tank [message #288378 is a reply to message #288377] |
Thu, 08 October 2015 19:14  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Dale Ropp made an wooden and fiberglas one that was a good bit larger and had a heater so they could make it out of the frozen north. I don't recall how much larger it was. Some of the upfitters had both black and gray tanks.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Black water tank [message #288409 is a reply to message #288377] |
Fri, 09 October 2015 10:23 |
bpimm
Messages: 211
Registered: June 2013
Location: Washougal Washington
Karma: 2
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I'm thinking of designing up a stainless tank to replace the small one, I think I can get 50+ gallons. I need enough capacity for 2 people for 3-4 days without a dump. I was thinking of the plywood/epoxy tank but I think the stainless would be a better long term solution.
I looked at every commercially available tank I could find and none of them would fit the GMC except the low capacity tanks.
Brian & RaeDean
1973 26' #383
Washougal WA
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| Re: [GMCnet] Black water tank [message #288413 is a reply to message #288377] |
Fri, 09 October 2015 11:00 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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My blackwater and freshwater tanks are the same size, which works well. Many of the show sites have electric only with a hose over there and a dump station back yonder. I have a look every morning after breakfast cleanup, and when the freshwater nears the bottom, I go dump and refill. At Wakiwa Springs, I put hoses on the in and the out and enjoy soaking in the bathtub.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
[Updated on: Fri, 09 October 2015 11:00] Report message to a moderator |
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| Re: [GMCnet] Black water tank [message #288415 is a reply to message #288414] |
Fri, 09 October 2015 11:17 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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We have a 1978 Royale. It has two tanks which combined capacity slightly
exceed the capacity of the fresh water tank. However, the toilet, lavatory
sink and shower drain into the black tank, while the kitchen sink only
drains into the grey tank. For our particular situation, if the lavatory
sink and kitchen sink would both drain into the grey tank, it would come
just about even when the fresh water tank is empty, then both waste tanks
would need to be dumped. As it stands now, the black tank is often full
when the grey tank is only half full. A larger capacity tank is not the
answer for us. Management of where waste water goes would be a big help.
There is no perfect solution that works for everyone. We take frequent long
trips in our coach, 6 weeks or so. It takes a conscious effort to manage
waste water. Just our situation. Yours might vary, but packing around a
heavily laden waste tank burns fuel. Just some food for thought.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Fri, Oct 9, 2015 at 9:01 AM, Kingsley Coach
wrote:
> Brian...start a new thread under 'Want a Larger Black water tank' or the
> like, to get peoples attention.
>
> I'm more than a day's drive from you so I will be no assistance to you on
> this project...
>
> Mike in NS,
>
> On Fri, Oct 9, 2015 at 12:53 PM, Brian Pimm wrote:
>
>> OK will do. I have a CNC plasma cutter to cut them and can weld them but
> I
>> don't have a big enough brake to put the bends in so I'll have to farm
> that
>> out. I may get some time to work on it this winter but learned a long
> time
>> ago not to promise a timeline on a project like this. :d
>>
>> How many people would be interested in a large black tank? that may
> change
>> my priorities a bit if I could do a small production run.
>>
>>
>> --
>> Brian & RaeDean
>>
>> 1973 26' #383
>>
>> Washougal WA
>>
>> _______________________________________________
>> GMCnet mailing list
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>
>
>
> --
> Michael Beaton
> 1977 Kingsley 26-11
> 1977 Eleganza II 26-3
> Antigonish, NS
>
> Life is too short to hold a grudge; slash some tires and call it even !
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
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| Re: [GMCnet] Black water tank [message #288421 is a reply to message #288409] |
Fri, 09 October 2015 11:37 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Brian
Not wanting to start a debate -- but some owners use the recirculating toilet which came in many of the coaches. It has several gallons of capacity as well as the re- use reduction advantage.
To some it is a "gross" option and some complain about the odor.
Dennis
bpimm wrote on Fri, 09 October 2015 10:23I'm thinking of designing up a stainless tank to replace the small one, I think I can get 50+ gallons. I need enough capacity for 2 people for 3-4 days without a dump. I was thinking of the plywood/epoxy tank but I think the stainless would be a better long term solution.
I looked at every commercially available tank I could find and none of them would fit the GMC except the low capacity tanks.
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Black water tank [message #288422 is a reply to message #288415] |
Fri, 09 October 2015 11:42 |
bpimm
Messages: 211
Registered: June 2013
Location: Washougal Washington
Karma: 2
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Senior Member |
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James Hupy wrote on Fri, 09 October 2015 09:17We have a 1978 Royale. It has two tanks which combined capacity slightly
exceed the capacity of the fresh water tank. However, the toilet, lavatory
sink and shower drain into the black tank, while the kitchen sink only
drains into the grey tank. For our particular situation, if the lavatory
sink and kitchen sink would both drain into the grey tank, it would come
just about even when the fresh water tank is empty, then both waste tanks
would need to be dumped. As it stands now, the black tank is often full
when the grey tank is only half full. A larger capacity tank is not the
answer for us. Management of where waste water goes would be a big help.
There is no perfect solution that works for everyone. We take frequent long
trips in our coach, 6 weeks or so. It takes a conscious effort to manage
waste water. Just our situation. Yours might vary, but packing around a
heavily laden waste tank burns fuel. Just some food for thought.
Jim Hupy
Salem, OR
78 GMC Royale 403
Agreed that carrying the extra weight is not the best but having to break camp and go find a dump site every other day isn't good either, We don't spend long times in the coach usually a few days and no more than 400 miles round trip so in our case the extra fuel wouldn't be that much even if we had to bring it home to dump. but so far we have been able to find a dump site on the road somewhere close to where we are staying. It would just be nice to only have to do it on the way out.
Brian & RaeDean
1973 26' #383
Washougal WA
[Updated on: Fri, 09 October 2015 11:47] Report message to a moderator |
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| Re: [GMCnet] Black water tank [message #288426 is a reply to message #288422] |
Fri, 09 October 2015 12:04 |
Hal StClair
Messages: 971
Registered: March 2013
Location: Rio Rancho NM
Karma: -12
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Senior Member |
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I have a friend make his own holding tanks out of ABS sheet. He used an old heating element from a discarded oven with a rheostat to control the temperature for the bends. He insulated them with foam board and used stainless wire in the foam for a heating element to prevent freezing. He tapped into the 12 volt heating wire at 1.5 volts for the LED warning light so he would know when heat/power were being used as the thermostat was always on. It worked great for over 20 years for him.
Hal
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind, except you happen to be insane."
1977 Royale 101348,
1977 Royale 101586, Diesel powered,
1974 Eagle Bus 45',w/slideout,
Rio Rancho, NM
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| Re: [GMCnet] Black water tank [message #288428 is a reply to message #288377] |
Fri, 09 October 2015 12:18 |
77Royale
Messages: 461
Registered: June 2014
Location: Mid Michigan
Karma: 6
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Senior Member |
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Ill throw this out there as I just replaced the black tank in our 77 rear dry bath Royale this spring.
Two things to consider is where the bathroom is located, as well as if its a GMC or a Transmode as it makes a difference, (and would possibly make a difference on any type of production run numbers for a new tank).
Our Rear Dry Bath has a dedicated 19 gallon black tank. The only thing that fills that tank is the toilet. The Toilet cut out is basically right over the RV outlet on the black tank.
All the other water sources fill the 35 gallon grey tank, just forward of the black tank. Kitchen Sink, shower/tub and bathroom sink. This has worked out for our limited camping thus far just fine.
The rear bath layout of this makes it possible to not have S*&$ roll up hill to get in the tank and also makes dumping a bit easier with a slight incline or drop in pressure of the air bags. My set up (Similar to Mr. Hupy) allows me to dump the grey as often as needed without touching the black. Not so in a true GMC with one common tank for everything.
Thats just something to think about.
The issue is not so much the space to put a bigger tank underneath. The tricky part is possibly re routing all the outlet plumbing to get to the tanks with enough slope to drain into the tank properly when the coach is level or close to level.
77 Royale, Rear Dry Bath. 403, 3.55 Final Drive, Lenzi goodies, Patterson carb and dizzy.
Mid Michigan
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| Re: [GMCnet] Black water tank [message #288429 is a reply to message #288377] |
Fri, 09 October 2015 12:18 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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We have a working Thermasn and it is great. If we are traveling about 3 hours of running will take the black tank from full to a bit under 1/2. (1/2 is as low as the Thermasan can take it.) If we are parked it is necessary to dump every other day. When traveling the limiting factor is the fresh water tank which will last for 5 or 6 days. If you have one installed but not functional they can be repaired/refurbished to operational condition. It should also be possible to recreate one from scratch.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Black water tank [message #288439 is a reply to message #288430] |
Fri, 09 October 2015 16:57 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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As the last engineer on the Thermosan Commercial, the only part I can't source today is the level control. Everything except the dog to drive the Cole-Parmer pump is a shelf part. The "sanitizer" injector was just a SS screen and some other stuff. If anyone wants to know more.....
Matt
A Hamilto wrote on Fri, 09 October 2015 13:28midlf wrote on Fri, 09 October 2015 12:18We have a working Thermasn and it is great. If we are traveling about 3 hours of running will take the black tank from full to a bit under 1/2. (1/2 is as low as the Thermasan can take it.) If we are parked it is necessary to dump every other day. When traveling the limiting factor is the fresh water tank which will last for 5 or 6 days. If you have one installed but not functional they can be repaired/refurbished to operational condition. It should also be possible to recreate one from scratch. Are you saying that a thermasan unit can be built from scratch?
More info, please. At least as an intellectual exercise, I would like to know what you would use for a nozzle into the exhaust system. Also what kind of pump/macerator, if different from the ones commonly available. Also, what other components are required?
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
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| Re: [GMCnet] Black water tank [message #288443 is a reply to message #288442] |
Fri, 09 October 2015 18:07 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Isn't there at least one vendor that has replacement holding tanks available?
You can also search here for a possible replacement that could be used:
(http://www.ronco-plastics.com/)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ Since 30 November '53 ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ Member GMCMI and Classics ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
|[ ]~~~[][ ][]\
"--OO--[]---O-"
> From: emerystora@mac.com
> Date: Fri, 9 Oct 2015 16:39:56 -0600
> To: gmclist@list.gmcnet.org
> Subject: Re: [GMCnet] Black water tank
>
> 'What would be wrong with aluminum?"
>
> Try corrosion. The contents of a holding tank is pretty nasty and I suspect you'll have a hole in the tank before long.
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
>
>> On Oct 9, 2015, at 4:12 PM, Brian Waddell wrote:
>>
>> I was thinking I could make myself one out of aluminum.....what would be wrong with aluminum?....A plastic repair place said he could fix my tank no problem...he plastic welds...I re-install, it stars to leak again...I take it back he fixes...no charge.....3 times now....claims he has fixed these tanks for years...I have never used the coach...it sits in my shop with rv plumbing fluid in it and it starts to leak in a few weeks where he fixed. I do know that it is possible to tighten the bands to tight and stress the tank....brian 77 ele 455
>>
>>> Date: Fri, 9 Oct 2015 09:23:21 -0600
>>> To: gmclist@list.gmcnet.org
>>> From: brian@pimmlabs.com
>>> Subject: Re: [GMCnet] Black water tank
>>>
>>> I'm thinking of designing up a stainless tank to replace the small one, I think I can get 50+ gallons. I need enough capacity for 2 people for 3-4
>>> days without a dump. I was thinking of the plywood/epoxy tank but I think the stainless would be a better long term solution.
>>>
>>> I looked at every commercially available tank I could find and none of them would fit the GMC except the low capacity tanks.
>>> --
>>> Brian & RaeDean
>>>
>>> 1973 26' #383
>>>
>>> Washougal WA
>>>
>>> _______________________________________________
>>> GMCnet mailing list
>>> Unsubscribe or Change List Options:
>>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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