Water tank capacity on your trailer.

[skersfan]

Ronco or Plastic mart have hundreds of different tanks, that can have fittings spun. I would stay away from the ABS tank, it is meant to be in an enclosed area, above the floor.

My trailers now have 41 gallons of water on board, located just above the axle, which feeds on demand to a standard RV water heater with automatic pilot light.

You do not want the tanks hanging below the axle or where it can catch a rock and rip the whole thing off. I would try to keep it within the frame rails and even with the lowest part of the frame, protected on all sides.

[jim65wagon]

Ronco or Plastic mart have hundreds of different tanks, .

both of our tanks are from plastic-mart

[Jeff Wanamog]

I have 27 gallons below the trailer with a six gallon water heater. My only mistake is mounting it forward of the axel instead of directly over the axel. I am a little too heavy on the tongue now.
Jeff