Rear bath remodel help on '69 GT

[cooksey69]

I just acquired a 21' 69 GlobeTrotter over Christmas break. I have completely stripped the interior and am in the process of sealing exterior and replacing entire floor. The original bath had no holding tanks and I would like to make it larger. Any suggestions on remodeling bath and how to add grey and black holding tanks to this trailer? I am thinking of putting bath area completely across back with seperate shower.

[Aerowood]

Welcome to the Forums. I am currently in a long term restoration / remodel of a 71 GT, but am moving the bath to a side wet bath. Finding a gray water tank that will fit between the frame rails without hanging below the belly pans has been a challenge. I found a tank that will fit but it only holds 11.6 gallons so it will require at least 2 tanks that will mount one under the axle, and another, one bay aft of the axle, and then plumbed together. I would be very cautious about mounting a gray tank all the way aft as it would cause a loss of tongue weight as it fills up and the freshwater tank empties, as it is in front of the axle, causing serious towing issues. You should already have a black tack under the toilet. Do not be afraid to ask lots of questions.

http://www.airforums.com/forums/f381...nte-26902.html

[purman]

Thats what I have in my 69'. When adding tanks you need to be carful. If you put your black tank in the back you may need to strengthen the frame so it doesn't sag. 10-15 gal max should be fine for a black tank. Your grey tank try to fit in between the axels (if you have 2) 20-40 gal for this. I am adding a grey tank this spring (30 gal) I am going to re plumb the black tank to come out the side with the grey so i only have one hose to hook up. Each tank will have a valve that can be opened and closed into the one outlet valve. put the toilet directly on top of the black tank. and the shower on the interior wall closest to the front. That way you don't have to run you plumbing as far.

Good luck.

[purman]

Aerowoood brings up a good point about the size of the tank. My grey tank is going to be my old water tank. It is only 6" tall so it will hang down from the frame, but as it is going between the axels it will not hang below them.

you can get them custom made, little more money but worth it for the black tank, as you don't want the outlet to have seams that can catch on stuff (if you know what i mean)

Talk to your local RV dealer about tanks and tank sizes. Talk to more than one because they carry different lines of tanks.

[JFerguson]

I don't want to hijack this thread but I was wondering how feasible it would be to fabricate your own tank. I have some fiberglass layup experience from a sailboat I built years ago. I was thinking of shaping a chunk of styrofoam to shape of the tank coating it in several layers of fiberglass and then pouring a cup or two of gas in there and disolving the styrofoam.