For some people one of the most problematic bike commuting performance issues is SBS. What is SBS? Sweaty Back Syndrome. The most common cause is riding with a backpack. Fortunately there are cures available, and most don't require you to call your doctor if four hours of successful execution leads to favorable results.
The most obvious solution for SBS is to transfer the bulk on your back to your bike. Why carry stuff on you if you can attach it to your bike? The obvious answer would be convenience. Sometimes a backpack or bag thrown over your shoulder is the most convenient and easy way to haul stuff.
However there are a variety of solutions, and reader Anthony sent along the following text and pictures. If you have come up with DIY solutions to fight SBS, feel free to give us a shout out. Take it away Anthony . . .
This time of year its always tough on my commute because I have to carry so much clothing in my backpack (it's cold in the mornings and warm in the daytime. It was time to transfer some of the weight and bulk to my bike. I did some searching on the web for racks and carriers and did not find what I needed without spending a small fortune.
Then I found this plastic crate in my garage and planned a way to mount it on my bike. With some soft copper tubing, steel hanger straps, hose clamps, and some nuts and bolts I was able to get a secure mount. Its been 2 weeks in use and its working great! I recently picked up one of those big ziplock bags (big enough to fit my backpack inside) now I am protected if it rains.