Update - Bike Rack

So a while ago I posted about my attempts to get a bike rack for the rear of my bike to put my backpack on.  I managed to craft something that worked rather well this morning.

I went to Michael's craft shop and found a set of 1 1/2 inch wide D rings and canvass binding tape.  I was looked for a more substantial webbing, but they didn't have it.  I put the D rings on one end of about a 3 foot section and sewed the end flaps down.  I then threaded the straps through the spring loaded section in the center of the bike rack figuring that the pressure would hold the strap in place.  To use it, I put the backpack on the rack and fastened the straps around it cinching it tightly.  Since the binding is very thin, the cloth bunches up in the D ring, but it held enough to get me to work.

I will have to look for a better strap material, but in the meantime it works well enough to hold it on the rack.  My main concern was not only holding it on, but causing me to have a different ride with the load on the back.  The rack is rated for up to 5 pounds and the backpack is no where near that weight, but I have never really ridden with any load on the back so I was concerned that I would be unable to handle the weight distribution.  I hardly felt it and whenever I stopped I had to reach back to make sure it was still there!  So here I am with my clothes change in the front basket and the backpack on the back rack.  I feel like a real bike commuter!