Originally Posted by
fietsbob
A tightly woven 1" wide strap has No significant sag when wet .
Cheap common Bungees un hook and get in your wheels and you tear them up,
that is If you don't crash.
I made my own rain covers , the straps that secure them is both side release buckles
and snubbers... a 2x loop of shock cord between the strap and the buckle,
sewing a loop in the strap belt ends,
that you have to pull on tight to close the buckle.
Originally Posted by
xyzzy834
I've had the (ahem...) pleasure of riding in all day, soaking rains a couple of times while touring. I've never noticed anything getting loose due to nylon stretch. They were cinched over some compressible items, like a tent and sleeping bag, so that might accommodate any wet nylon stretch. If things loosened in the rain, I'd merely stop, cinch things a bit tighter and move on. It won't keep getting looser.
While there are some nylon formulations that don't stretch as much, the more commonly available ones stretch significantly when wet. Significantly as in 20 to 25%. Even nylon webbing stretches.
As for tightening the straps, yes you can do this. But with an elastic cord bungee, you have one less thing to worry about.
And I didn't even bring up the issue of UV degradation