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Old 06-23-2014, 09:35 PM   #31
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"Y'all" will be "WE" as soon as you get your 5'er! I think it's a different issue. If I remember correctly, Larry's Casita mod was to go to a larger diameter drain pipe, not because the original is too small, but boring out the side of the gray tank and installing a larger diameter pipe had the effect of penetrating the tank at a lower point on the side and then maintaining this low level all the way to the exit. I just don't think there is that much gray water left in the Escape's tank by the time it drops to little more than a trickle, which isn't all that long.
Bite your tongue! Casitas are nice trailers, but yeah... I have the same issue with my Scamp (don't tell anyone!). The gray water drain is about 1" to 1-1/2 inch above the bottom level of the tank... because it's on the "side" not the bottom of the tank. THAT's why I always put a couple of gallons of fresh water into the gray water tank (after the dump) to make sure any stinky water is diluted.

My 5er is going to be prestine... no stinky water, ever

yeah... right...
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Old 06-24-2014, 02:07 AM   #32
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Originally Posted by Donna D. View Post
Bite your tongue! Casitas are nice trailers, but yeah... I have the same issue with my Scamp (don't tell anyone!). The gray water drain is about 1" to 1-1/2 inch above the bottom level of the tank... because it's on the "side" not the bottom of the tank. THAT's why I always put a couple of gallons of fresh water into the gray water tank (after the dump) to make sure any stinky water is diluted.

My 5er is going to be prestine... no stinky water, ever

yeah... right...
Likewise... after about two weeks, our grey tank indicator is fixed at 1/3...

In the 5.0 TA the grey tank is 30 gal. Because it hangs below the mould and is clearly visible... plus translucent, I can see the actual level of the water in the tank (same with the fresh). When I dumped the grey... no water in tank (never mind 1/3... 10 gal), but the indicator read 1/3... Go Figure...

Drain pipe level to tank connection does not come anywhere near to contributing to this issue.

No big deal really, since I can gauge the fill by looking at the tank... Then again, one can simply leave the shower drain unplugged and wait till the floor starts to fill up. Chances are, at that point, the grey tank is full... LOL...

Good luck on the "pristine" Donna... LOL...
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Old 06-24-2014, 10:37 AM   #33
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Tim - Will be really interested in your results.
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Old 06-24-2014, 02:14 PM   #34
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On the Escapes are the bottom of the tanks angled down towards the side with the exit pipe? I can see it very pronounced on my stick built, at least on the black, not so much on the gray.
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Old 06-24-2014, 06:36 PM   #35
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I haven't looked under there in a while, but I'm pretty sure they are close to flat (and level) across the bottom.
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Old 06-24-2014, 09:47 PM   #36
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On the Escapes are the bottom of the tanks angled down towards the side with the exit pipe? I can see it very pronounced on my stick built, at least on the black, not so much on the gray.
Black waste tanks which mount to the underside of the trailer floor usually have a substantial slope moulded into them, but Escape (as is common in this size and type of trailer) uses a black tank sitting on top of the floor (under the raised-base toilet). It likely has a nearly flat bottom (otherwise how would it mount?), but the discharge is straight out the bottom of the tank (through a hole in the floor) - not out the side - so flow is less of an issue.
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Old 06-24-2014, 10:00 PM   #37
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Exactly. And there is enough vertical drop beneath the black tank that things happen quickly! Not so with the gray tank draining off the side.
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Old 06-24-2014, 10:15 PM   #38
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The slow draining of the grey water tank compared to our previous Scamp did catch our attention.

The major difference between the two brands is that on the Scamp the grey water drain is 3", the same diameter as the black water. On the Escape the grey water piping is 1 1/2" so that has to be a factor also.

Given that the grey water tank is much more shallow, the top of which is under the trailer floor and the top of the black water tank is higher than the floor, with more head, it's not surprising that the grey water's slower to drain. But still....it seems to take forever. Maybe it's the watched kettle thing

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Old 06-24-2014, 10:33 PM   #39
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I don't purport to be a gray water expert, but I've had fun with this topic. Initially, when you open the valve on the gray water drain, the water rushes right out. Then, what takes forever is the slow draining of remaining water that flows out at the bottom of the drain pipe, at a depth of maybe 1/2" at most. I don't think a larger drain diameter would speed things up very much, since this is the time consuming part of the event. The head is generated by the top of the water level relative to the drain (not the height of the top of the tank) and after that initial, satisfying rush of gray water, the head is reduced to almost nothing so the flow drops in proportion.
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Old 06-24-2014, 11:16 PM   #40
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Quote:
Originally Posted by Parker View Post
I don't purport to be a gray water expert, but I've had fun with this topic. Initially, when you open the valve on the gray water drain, the water rushes right out. Then, what takes forever is the slow draining of remaining water that flows out at the bottom of the drain pipe, at a depth of maybe 1/2" at most. I don't think a larger drain diameter would speed things up very much, since this is the time consuming part of the event. The head is generated by the top of the water level relative to the drain (not the height of the top of the tank) and after that initial, satisfying rush of gray water, the head is reduced to almost nothing so the flow drops in proportion.
Just bring a block or two of wood to place under your curb side wheels when you dump and it will tilt the grey tank enough to drain more quickly.
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