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Old 12-19-2007, 08:53 AM   #15
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After inserting a raster image of the fitting into Autocad and scaling it based on Rob's measurements, it looks like both the inlet and outlet are 2" pipe (2 3/8" OD). The outlet is then reduced to 1" pipe (1 5/16" OD).

I could detail a part for your tank fabricator to weld up from stainless pipe and weld-on tank fittings.

How much outside help is allowed by the rules?

If you guys open the door to "outside help" we all know who is going to win the bathroom throw-down.

...right Colin?
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Old 12-19-2007, 08:56 AM   #16
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Quote:
Originally Posted by markdoane
There is a similar trap in my '59 Tradewind. It is a more compact design. If you are looking around old plumbing supply houses look for one with smooth sides also.

I've posted a photo in my gallery.
Rob,

The above looks like the same fitting that Tim S. used. Where did he get his?
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Old 12-19-2007, 09:03 AM   #17
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We had the same P-trap dilemma...we found a nice substitute at our local plumbing supply house. It's not cast iron so it's a whole bunch lighter too. I can post a picture of it this evening...

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Old 12-19-2007, 10:04 AM   #18
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I just used a regular trap, and cut a small hole in the belly skin where part of the trap hangs through. Maybe I am not as particular as you are about the looks of the trailer underneath.
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Old 12-19-2007, 10:24 AM   #19
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We operate here on the KISS principle. There are enough things out there in Vintage Airstream land that require complication but this isn't one of them. First, go to Lowes & buy a "bar sink drain" (they are identical to the ones Airstream used throughout the 50's & 60's) then fish around in their pvc parts boxes. You will find a combination of parts that will create a "trap" like shape that will fit perfectly inside your bellypan without cut outs etc.
Colin
PS I'm letting Frank & Rob get a head start on their bathrooms as mine is sitting outside in the freezing cold covered with snow & I have warm trailers to work on inside.
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Old 12-19-2007, 10:25 AM   #20
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I could make you a space age one of carbon fibre or fiber glass if you want to go cheap! lol
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Old 12-19-2007, 10:48 AM   #21
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Quote:
Originally Posted by Colin H
PS I'm letting Frank & Rob get a head start on their bathrooms as mine is sitting outside in the freezing cold covered with snow & I have warm trailers to work on inside.
Ahhh! The tortoise and the two hares. Somehow the imagery seems to fit contestants.

Colin, how long do tortoises hibernate??
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Old 12-19-2007, 11:18 AM   #22
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I have one of those sitting in my barn - when I showed it to my good buddy Uwe (on this forum) he said there was a marine replacement that was much better than that - you may want to PM him.

Mine is in great condition - I'm not sure what I'll do with it though - have to wait till I put my tub back in.

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Old 12-19-2007, 12:53 PM   #23
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If I needed such a trap (fortunately not!), fabricating it out of ABS sheet would be quite easy. Our local plastics supply house ( TAP Plastics ) sells sheet ABS in several thicknesses and the sheet can be heat formed with a heat gun. Normal ABS cement available from a hardware store works great to glue parts together. I have made a number of one-off ABS products using sheet. The only secret is waiting several days before use so that the cement truly loses all solvent and makes a proper weld.
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Old 12-19-2007, 01:02 PM   #24
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Quote:
Originally Posted by Tim A.
If I needed such a trap (fortunately not!), fabricating it out of ABS sheet would be quite easy.
The thing is, our old cast iron one (and the new palstic one we got) has a check-valve in it. The check valve is to keep the water from the grey tank sloshing into the shower when your tanks are full and you move the trailer. Not so easy to fabricate...

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Old 12-19-2007, 01:52 PM   #25
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Rob,

I think you should do a mock up with paper towel and toilet paper rolls. Fiberglass the whole thing and put it in a wind tunnel to see the effect of drag when you're towing at 65mph.

After you verify the design, hire a CAD guy to put it in a 3-D model computer file so you can send it out to a few design houses for a prototype. I'd get at least three estimates.

Sure this extra work will take longer, but you'd be doing it right.

Might loose the throwdown but its worth it.
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Old 12-19-2007, 03:12 PM   #26
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Quote:
Originally Posted by Safari Tim
Rob,

I think you should do a mock up with paper towel and toilet paper rolls. Fiberglass the whole thing and put it in a wind tunnel to see the effect of drag when you're towing at 65mph.

After you verify the design, hire a CAD guy to put it in a 3-D model computer file so you can send it out to a few design houses for a prototype. I'd get at least three estimates.

Sure this extra work will take longer, but you'd be doing it right.

Might loose the throwdown but its worth it.
Tim,

I can tell you work for the Government.
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Old 12-19-2007, 04:18 PM   #27
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Rob, I went to the architectural salvage yard and showed them your photo of the trap... no luck. Maybe it really is an obsolete part. Could you just drop straight down into a blueboy? Maybe a funnel in the belly pan that you could position a blueboy under. Not one of those galvanized funnels it might cause dissimilar metal corrosion syndrome.
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Old 12-19-2007, 06:27 PM   #28
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Hey Rob, how do you want it sent? It's heavy but in good shape. Are you sure you need a trap on the tub? It's not connected to the black tank and should only have wash water in the lines, but it's yours if you want it.
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