Primitive Archer

Main Discussion Area => Bows => Topic started by: knightd on August 27, 2008, 03:55:18 pm

Title: ?? on density
Post by: knightd on August 27, 2008, 03:55:18 pm

If a piece of wood that is 3"x9" weighs 3# what would the density be or sg.

Title: Re: ?? on density
Post by: snedeker on August 27, 2008, 04:04:16 pm

3 x 9 x what?

Title: Re: ?? on density
Post by: knightd on August 27, 2008, 04:32:01 pm

OOPS!!!  3x9x2

Title: Re: ?? on density
Post by: Badger on August 27, 2008, 04:39:18 pm

That would be about 1.5 density, never heard of a wood that dense, are you sure it weighs 3#? Steve

Title: Re: ?? on density
Post by: snedeker on August 27, 2008, 04:44:44 pm

Another way of looking at it is that would calculate to 96 lbs per cubic foot.  Osage is around 56 or so I think.

Dave

Title: Re: ?? on density
Post by: Badger on August 27, 2008, 04:46:02 pm

Maybe someone can double check my figures.
water 64# cubic foot
1728 cu" to  cubic foot.
3X9X2= 54cu inches    1728/54 =1/32 of a cubic foot
32X3#=96#/64#=1.5

Title: Re: ?? on density
Post by: Badger on August 27, 2008, 04:47:48 pm

Dave, I think osage is .85 density which would be about 54# cu ft. I think??  Steve

Title: Re: ?? on density
Post by: snedeker on August 27, 2008, 04:48:51 pm

You are right on steve.  Desert Iron wood is about 1.2 or so.

Title: Re: ?? on density
Post by: snedeker on August 27, 2008, 04:49:35 pm

Right steve. I corrected that as you were typing

Title: Re: ?? on density
Post by: Dano on August 27, 2008, 05:03:27 pm

Ipe is 1.03 or so. Steve your math is way better than mine and we went to the same school.  ::)

Title: Re: ?? on density
Post by: knightd on August 27, 2008, 05:10:39 pm

Ok I was asking because I got some hickory that is the heaviest ive ever put my hands on..the piece you just calculated is hart wood and it sinks in water..here is a piece of white sap wood lets see what it comes out to..13/4"x4"x13" weighs just over 4# just barely floats.. and yes its dry..

David

Title: Re: ?? on density
Post by: knightd on August 27, 2008, 05:41:24 pm

OK My math ain't that good...So if you guys that haven't killed as many brain cells as me could chime in it would be appreciated

Title: Re: ?? on density
Post by: Justin Snyder on August 27, 2008, 05:46:34 pm

.64

Title: Re: ?? on density
Post by: knightd on August 27, 2008, 10:32:19 pm

thanks guys...

David