12-02-2018, 10:36 AM
Tom,
Here is post about making the bar into a truss. Build a truss.
Richard may want to pop in here...but if you do the math about how much pressure the bladder seal puts on the room, you will find its A LOT. By making the “bar” really solid to the room and making sure the “hook” in the middle of the bar engages to the frame of the coach, you really help keep the sag out of the room and allow the seal to do its job.
The rivnuts came from Fastenal if I remember. They were either 3/8” or 1/2” ...but probably either would work.
Bill
Here is post about making the bar into a truss. Build a truss.
Richard may want to pop in here...but if you do the math about how much pressure the bladder seal puts on the room, you will find its A LOT. By making the “bar” really solid to the room and making sure the “hook” in the middle of the bar engages to the frame of the coach, you really help keep the sag out of the room and allow the seal to do its job.
The rivnuts came from Fastenal if I remember. They were either 3/8” or 1/2” ...but probably either would work.
Bill
Bill Johnson
Birmingham, Alabama