I made new drapes to replace the originals for the front lounge in our '77 31' about 8 years ago.
When we purchased our '76 Argosy MH this year, it desperately needed new drapes. The pieces of fabric hanging in the windows couldn't even be called curtains!
I based my drapes on what I remembered from the '77. It's been a few months since I finished them, so I got out my notes. (Yeah, I made notes THIS time.
)
In my notes the term "panel" refers to one pleat and the fabric reaching to the next pleat.
3.33" of curtain track per panel.
10" of curtain track = 3 panels.
5" of fabric = 1 sewn panel.
I allowed 1" of fabric for each pleat, sewn on the 1/2" mark. I marked the center of each pleat at 5", allowing 4" of fabric between each pleat. I attached each curtain clip midway between the pleats.
I lined my curtains with Rain No-Stain, so that they won't stain if we get a leak or leave windows open while away.
The photo shows the curtains that are pleated both top & bottom. You can leave the bottom pleats out if you don't have bottom track.