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Old 04-28-2010   #11
oarframe's Avatar
Gardnerville, Nevada
Paddling Since: 00
Join Date: Jun 2008
Posts: 447
if you have enough room the ecosafe sk works well.
with a pootube watchout for gasseous buildup and explosive decompression while opening

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Old 05-10-2010   #12
Dave Frank's Avatar
Boulder, Colorado
Paddling Since: 1995
Join Date: Oct 2003
Posts: 2,727
Here's the one I just made: 3" ABS plastic with quick tite rubber boots that secure with hose clamps. Right around $15 from home depot.

My concern is it could be hard to open if the pressure outside gets much higher than the inside. No idea on the user days, but plenty. Might trim it down some. It is 3"x 16" or 113 cubic inches. The LL side says they used 6" pipe. That stuff looks huge.

Should be the only time it makes it to the kitchen counter.
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Old 05-11-2010   #13
Canon City, Colorado
Paddling Since: 2000
Join Date: Apr 2006
Posts: 427
Hey Dave, nice tube!

I'm trying to get an idea of how big a tube's gotta be for a given number of user days. The Eco Safe units are rated at 20, and 50 user-days each, at 2.3 gal and 5.5 gal. That puts one user day at between .11 and .115 gal. 113 cu in / .11 gal = 4.45 user days. That seems really low, though. I feel like I could get, I dunno, maybe twice that into that tube. Even supposing you get 60 user days into a normal groover (which is about what I've maxed those things out at.), that's still only .09 gal/user-day, which leaves your 113 cu in at 5.3 user days.

Anyway, I'm just trying to figure out what I'm missing, or if these calculations jibe with what everybody't thinking for a tube like this. We used a tube slightly larger than this one for a 5 day wall climb for 3. We didn't use it every day, somehow, and it was FULL at the top. What do you all think?

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