I recently came to the conclusion that draw length and draw strength are really in a 1:1 ratio regarding projectile speed. In other words, given the same taperung ratio, 18 kg drawn to 80 cm delivers the same speed as 9 kg at 160 cm. In order to build compact, effective crossbows, I am experimenting with super high draw weights. This new model - basically the same setup I have done in the past - is chambered for 25mm steel balls and should easily hold 250 lb draw force. I have now attached four full TGB strips per side, so it is at 157 lb. You cock the bands one at a time, much like you do on a powerful spear gun. This requires total strength and precision. It is made from top quality 18mm plywood and is 60mm (more than two inches) wide. Total length is about 70 cm for a 60 cm draw. Haven't tested the speed, but will do so on the weekend. The pics also contain an experimental Rambone in clear plastics, from the mould that apparently was just finished. I understand Helmut, owner of the business and the tool, wants to sell it in a few different colors but maybe also in a transparent version. It has so called vaccuoles (little voids) in the thickest part, from the shrinking plastic material during the cool down. Looks interesting, but is potentially weakening the frame. However, I tested it in the vise and at 70 kg (154lb), I gave up as my workbench started to groan quite a bit. I am excited that the Rambone will soon hit the market! I love that design, probably the best one I ever came up with.