09/03/2024
So I've got alot done on the repeater project lately. The main issue is still sourcing a prod that works as well as any of the commercially available hand crossbows (or better).
So far each prod requires alot of customizing on the design files due to the strength of the prod and the brace height (the distance from the prod to the string in the relaxed position).
The only prods I've found that are relatively easy to get on a repeatable basis that don't require manually cutting down are the 50lb and 80lb fiberglass prods for small hand crossbows like the Badger.
The 50lb are available through Ali-express for under $20 but take more then a month to arrive, the 80lb are available via Amazon for roughly $25 and take about a week.
The 50lb prod functions really well and shoots maybe 30-40 ft max. (In the photo's it's the top repeater with the smaller Arrow keeper)
The 80lb has a shorter brace height and caused me all kinds of headaches to get it to catch and caulk the string catch without being to week for the prod. but I finally got it working and it is shooting about 40-50ft.
The 80lb is significantly harder to draw out so I'm not sure if I'm even getting all the power on it that I can.
I incorporated a suggestion from David Maxfield and instead of putting a butt stock that rests on the front of the shoulder like a shotgun I instead added a hooking stock that goes under the armpit and hooks the shoulder from behind allowing me to use my whole body to brace against as I push outwards and away from me on the prod. It helps significantly with the draw on each repeater I've tested it on.
Adding the hook made the stock significantly longer then before making even the small repeater more difficult to travel with, so then I modified the handle so the stock can pivot 180 degrees to fold forward under the prod and the Mag on front will fold back and down (need to adjust the second mag a bit so it fols all the way).
Then I got another idea alltogether and spent most of the day modeling it out (had to order another prod and still have to print a bunch of parts out before I can tell you all about it). In the meantime, enjoy some messy shop photo's.