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Old 11-01-2014, 05:58 PM   #253
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1972 21' Globetrotter
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New wheels/tires! The new axles don't come out as far, so I went wider on the tires. Hopefully you guys don't know something that I don't about wide tires on a trailer! These are p275/60r15 highway tires since my axles are made for highway tires.
I'm remaking my wheel wells so the size isn't going to effect that.

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Old 11-01-2014, 07:37 PM   #254
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Well, the wheels sure do look nice. I hope it works great for you!
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Old 11-09-2014, 02:41 PM   #255
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In case anyone was planning on welding together their own stainless steel gray water tank with minimal welding experience.... Don't.

Problem 1: it's gonna weigh a ton.

Problem 2: you are gonna spend a fortune in shielding gas.

Problem 3: the metal isn't cheap either.

Problem 4: getting a weld water tight isn't as easy as you would think.

Problem 5: as you are welding the thin metal, the heat warps it a lot. It's extremely hard to get anything straight/square.

Problem 6: it's gonna take forever.

Problem 7: it's gonna look ugly, at least mine was looking pretty horrendous.

Don't do it.
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That little square you see taking shape there, I "finished" that. Made the edges out of angle and welded some sheet metal in it. Cost about $50 in gas. Keep in mind though that I had to keep re-doing it. So probably $20 in gas.

So stay tuned for the pictures of my new plastic gray water tank!


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Old 11-09-2014, 04:18 PM   #256
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I tried replacing the shower pan. Please help.

Those big tires are a great addition IMO.


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Old 11-09-2014, 07:25 PM   #257
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Hi Marco, glad you decided to go with a plastic fresh water tank. Some folks "weld" their tanks from ABS plastic sheets. A molded tank has less chance of leaking. Stainless is challenging to weld, and is an expensive material.

David
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Old 12-12-2014, 07:35 PM   #258
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long time since last update
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Old 12-13-2014, 02:45 PM   #259
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Yeah, I ended up hiring www.hofarc.com to design a holding tank system for me (basically I just want them to give me a list of tank model numbers and where to get them) and they have been dragging their feet.
I figured they had probably done this a million times and this would take them 30 minutes to figure out considering I provided them with detailed 3d models and measurements etc.
We're at 3 weeks and counting....


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Old 12-13-2014, 07:22 PM   #260
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Hi T Marco,

You can buy RV tanks already made that will fit almost anywhere. I used Inca Plastics right there in your home state. They've been molding RV tanks for years and years. They have a ton of shapes and sizes. I studied their catalog until I found a tank with the right height, width, and lenght to fit my frame bay where I needed to mount the tanks. Inca has the neatest grommets to seal your drain pipes, toilet pipe, and vent pipes. I selected a tank design with mounting shoulders so I could hang the tanks from my frame rails and snug them up to the sub floor. These tanks also came with the 3" dump valve connections for plumbing the drain manifold. There are other places to get tanks. I recommend you contact Inca and see what they can do for you.

David

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Old 12-14-2014, 11:12 AM   #261
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Thanks a lot David! Those look great! I spent a couple days browsing through their catalog after my failed stainless tank experiment, and got kinda overwhelmed. My real work got pretty intense at the same time and I made the executive decision to hire professionals...
Your post is inspiring me to get a refund of my retainer with them and take another stab at this thing. I'm going to hound them on Monday and see where they are with everything. Stay tuned!

P.S. How much were your tanks? And do you remember which model number?


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Old 12-14-2014, 11:47 AM   #262
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T Marco, hello! I don't remember the exact model number. It was in the "H" part number series for "holding" tanks. The width was 17", and the height was 9". The length I believe was about 48". The capacity of the tanks was in the 26 gallon area. I paid about $650 for both tanks with grommets and adaptors, and about $150 in freight. They are made out of tough polyethene and have the shoulders for hanging the tanks.

I tried to down load the catalog again, but too many people using Netflix in my neighborhood right now. It is a huge adobe file. The tank was like on page 39 of the catalog. I just browsed through the catalog until I found a tank that was less than 19" wide and less than 50 inches long. The bottom of the tanks slope to the drain opening. These tanks did come with the old fashioned "screw" type metal sensors, but I opted for the SeeLevel as I read they are more reliable. Time will tell.

Hope this helps.

David
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Old 12-15-2014, 11:59 AM   #263
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That is immensely helpful David, thank you very much! I will stop treating this like rocket surgery and get the ball rolling again.


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Old 12-15-2014, 08:18 PM   #264
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Yep, you are fully capable of installing waste water tanks in your Globetrotter.

Just yesterday I finished a new, improved dump valve aluminum cover and installed it. I think it will work okay. I just can't wait for my first flush and dump!

David
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Old 12-18-2014, 10:25 AM   #265
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That looks amazing!!! What a great way to hide all the ugly tubes!! Knowing you can do that and how nice it looks just opened up a whole new world of placement options for me. Thank you!


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Old 12-18-2014, 11:34 AM   #266
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And you did some creative thinking with your fancy axles and wheels. And you've learned that welding ain't that bad. I haven't learned that skill yet. We Airstream enthusiasts learn from each other on these forums.

My 86 has an ABS plastic valve cover under it. These valve covers keep the dump valves warm in cold weather. Here is a photo of the dump valve cover on the 86. It does make servicing the valves more work.

David
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