I picked up some myrtle veneers from Idaho Curt a while back and have decided now is the time to build a bow with them. They are .02 thick. I am going to build a 64" TD LB with a 15" riser. Mild r/d with parallel lams. I have been ordering from Binghams and lettting them do the math but I figured with all the great veneers I have been seeing on the classifieds I better get with the program and figure it out for myself. Where do I measure the stack thickness at on the limb? How do I determine how thick for the draw weight i am trying to achieve? (I am looking for #55 @ 28") Any help would be greatly appreciated.
Jim, if you are reproducing a bow you have built before but just want to change the weight of the bow I would measure the total stack just after where your fadeouts end. Then use this tool to determine your new stack.
http://tradgang.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=125;t=006396;p=2
When calculating your new stack thickness include the thickness of your veneers in the total stack.
Hope all goes well and hope you get a chance to post some pictures of your progress.
Some time ago I got a excel chart from Jason on how to calculate the stack of a longbow with a mild d/r-profile. The values are for a bow with an 18" riser, but it can be adapted quite easy. You can download it here...
http://www.swissbow.com/swissbow_eng/download_eng.html
BTW: I would make the total stack about 0.410 inches.
----------
Andy
Andy is pretty sharp on his bowyer skills.
Thanks.
Andy's book is exactly what i am looking for.