I'll try to help you out although there are other people who know more than I do. There are different amounts a bow shelf can be cut to it may me cut close to center, cut to center or cut past center. My guess is that is cut close to center.
As far as selecting spine you should try to find out what your draw length is. Your bow should be 50# at 28" if your draw length is less than 28 you will probably lose 1-2# per inch shorter of draw length. On the other hand if your draw is longer than 28# depending on how that bow stacks you may pick up 1-2# per inch.
The best way to determine how much you are actually pulling is to get a bow scale and pull it to full draw and find out what you are actually pulling.
As far as spine goes have you decided on what type of arrows you are going to shoot carbon, aluminum, or wood? My suggestion would be to get a few different arrows in spines that would cover 45-55#. You can also adjust arrow spine by leaving them longer this will make the spine weaker, cutting them shorter this would strengthen the spine. You can also use different point weights, a lighter point will stiffen the spine, a heavier point will weaken the spine.
As far as determining the brace height simply measure the bow grip, from the part of the grip where the web of your hand rests back to the nocking point on the string. This measurement is your brace height.
Good luck just try experimenting with your arrows until you find the arrow that gives you the best flight. Arrow manufacturers have size charts if you follow the charts they will get you close, and you will just have to decide what flies best out of your bow when you shoot it, and not necessarily when someone else shoots it. Don't hesitate to post other questions someone will answer them.
Topic: Early 80's Fred Bear TD ???? (Read 941 times)
