Reader Sam, who blogs over at samhDOTnet, was given some old canvas saddle bags but found them to be dangerous in that the lack of stiffness meant they were likely to end up catching the back spokes. In his own words . . .
My brother had given me a set of army green saddle bags some years ago that I've put on a couple bikes only to remember that without a solid backing of some sort inside will simply flap around and get caught up in the spokes. The problem worsened when weight was placed inside because it inevitably pushed the pannier bag inward toward the wheel.
His solution? Coroplast. That plastic used to make campaign signs. This is not the first coroplast hack we have seen. Reader Smitty contributed to Bike Hacks with his coroplast bike panniers. Sam used corplast as well, but as support for pre-existing bag. Check it out -
The lining . . . fits into the bag.
More details about the use of zip ties and twist ties can be found over on his site so be sure to check it out. Thanks Sam!