Right, so, this is my current project, the dimensions are taken from a medieval example in the Kristianstad museum, Sweden. The taper is 1mm per 1 inch of thickness, except for the central 8" which fade to a stiff centre of 4". Front taper is constant from centre to nocks. The original is 27mm thick by 37mm wide at centre, I am a little under this at 25mm and so I am about 2mm too thin along the whole length. The original is yew, probably compression wood - it was drawn in 1945 as straight, but now shows a very slight deflex (set?) - the humidity of storing conditions changing would explain the difference in profile as compression wood moves with humidity changes. I figure I am about 10% below the original's draw weight. Does that seem fair?
Also, the centre 1/3 of my bow has a tiny amount of reflex, the photo shows the centre as straight where the reflex is affecting the draw profile. I figure I need to soften the inner 1/3 but would welcome any opinions on this. For what its worth, the draw length will be 10.5 inches measured from the belly - brace height is 4"
the original
Getting near to brace height
Side profle (unstrung)
