hi all,
i have question about the wood choosing and the mechanical properties of the wood like modulus of elasticity and modulus of rupture.
according to the mail i have received from wood database web site,
they recommend to choose a wood lowest moe and highest mor.
do you thinks this is correct?
wood should be elastic and strong enough to be breaking in my undertanding.
when moe value is low, is it more elastic or opposite?
thanks.
As long as you design the bow for the charactoristics of the wood you can build a bow from almost any wood. I don't try to get hung up with a lot of technical things when I build a selfbow. I do consider tension and compression strengths.
I am fortunate to live where many varieties of trees are available and have built bows from many of them. Most have made good bows, all have made bows.
I agree with Pat. Tim Baker, came up designing the bow around the density (specific gravity) of the wood. For example red oak has a density in th 0.7's while osage has a density in the 0.8's. Thus, you would make an osage bow narrower ...say 1 3/8 in generally..than red oak say..l.5 in or a little wider depending on if the bow is going to bend in the handle. My site has buildalongs. Jawge
http://georgeandjoni.home.comcast.net/~georgeandjoni/