The crossbow prod has had the bamboo planed off it, about an inch of Elm spliced onto each tip and a new bamboo backing glued on with about 1.5" of deflex. The spliced tips are curved towards the back in a tiny reflex this allows a stringer to sit near the tips as an aid to stringing.
I've had the prod on the tiller braced (about 2.5") and drawn to 100# at 12" . I'm hoping for 14", but didn't want to push my luck before I had it mounted on the bow.
I've made the prod mount and did a quick dirty tryout with the prod bound in place with a bit of rubber strapping. The final fixing will have leather between the prod and the aluminium and will be bound on tight with 4mm rubber cord (which may be replaced with rawhide eventually).
I may glue some this pieces of wood or bamboo on the top and bottom edges of the prod to help locate it correctly.
The vertical parts of the mount either side of the track may be used to mount rubber bump stops/ string catchers, enabling a low brace and longer power power stroke.
Nervy times as I don't want to do all this work and have it smash, and even if it does work, how fast will it be?
Just as well I enjoy all this!
If all this works, eventually I'll get to work on the proper stock made from some decent timber.