<img src="http://i43.servimg.com/u/f43/17/23/13/33/102_3110.jpg" border="0" alt=""><img src="http://i43.servimg.com/u/f43/17/23/13/33/102_3028.jpg" border="0" alt="">Hi guys, not sure if this is the correct section to post this in but im looking for some opinions on a project I've had on the back burner. First off, let me say that I realize that a rubber powered bow isn't really practical (especially for a guy who owns so many conventional bows). I've wanted one since I saw Joerg's and so I'm making one for the cool factor. It uses the same basic design as my aluminum starship. My goal is to try and maximise both band life and have full lenght of draw. I put some tube on the bow part and it seemed to be stretched near its happy limit. Included are two possible configurations, with and without pulleys (the pulleys reduce the percentage of elongation but add complexity). Another option would be to just make the bow a bit longer so as not to stress the rubber too much. What I'm wondering is what is more detrimental to the rubber: extreme stretch, pulleys, or contacting stops/or wisker biscuit upon release? Ideas? Also, I'm to cheap to buy a whisker biscuit. I'll either make a tooth brush type, rubber tube type or toilet brush type. How have these stood up for the guys who have made them? Thanks. Sorry for the long post.