I’m looking for information on a custom commuter/mountain bicycle with the ability to carry large/heavy cargo?
I live in San Jose, CA and have seen a number of people using what looks like a modify mountain bikes with an extended rear wheelbase and three wood platforms mounted on the sides and top. They carry anything from small children to 5 gallon water bottles.
Try this, it covers everything that you need.
http://www.konaworld.com/09_ute_en.cfm
Or, this is a frame only alternative http://www.surlybikes.com/bigdummy.html
Building a Custom Bicycle
