On Thu, 10 Nov 2011 15:02:34 +0000, Phil W Lee
wrote:

Anthony Olszewski considered 10 Nov 2011
12:04:51 GMT the perfect time to write:

Backpack works great on a bicycle rack.

http://nymetroworkout.com/news/2011/...-bicycle-rack/

Right up until the moment one of the straps comes loose and goes into
the back wheel.

If you need dual purpose luggage, it is available and is designed not
to suffer from that problem.

Around 13 years ago I started bike commuting, strapped my backpack to
the rack with bungie cords, and one of the cords did exactly as you
said. Use the right tool for the job.