yes thanks good points.. Its a rough work in progres, so ive a long way to go, and I am trying to get something simply/crudely made and different to work.. Unfortunately I no longer have workshop facilities so have only the minimum of tools.. machining is out of the question, simple hand tools only are available
The mechanics are set so the nut is rotating at the level of the guide rail along the centre..as in the pic above it shows the front of the nut up a bit, it actually can rotate well into the body, past the guide rails, which are still to be fitted, but is then retrived by the elastic band, so the cocking part stands proud for when the string gets pulled back.
I will also be fitting a guide over the bolt which hopefully will stop the string going over..and a spring to hold the bolt/arrow.. I will post more pics as I progress, there is a lot more to do..
At the moment the Nut will take normal nocked arrows onto the string.. I have read that flat or slightly cupped ends are best, along with much thicker strings, time will tell.. Its just some ideas to try.. with a thick string and guides over and under the string should be stopped from jumping
Ive been reading up and old setups dont have the full bolt length resting in a guide.. friction being a problem, they have the bolt's front fractionally raised, ususally the head doing the job.. However my shop bought ones dont do that.. so whats the best way..