This is quite a crude effort by the standards of this forum, but maybe if I post, others won't feel so bad with their work
I've made a couple dozen bows but have yet to make a serious, working crossbow. The precision work required for them seems to be the challenge.
It's more of a prototype toy than a serious weapon. The bow draws 4lbs at 12" and shoots bamboo skewers. I wanted to see if a simple roller nut mechanism could be done with crude materials (worked fine with a 25lbs draw) and if I could wrap my little head around how wheelie bows work (still not too sure). I was inspired by this crossbow's mechanism: https://thearbalistguild.forumotion.com/t774-compound-project
There is no let off on these round cams, but they do allow a much longer draw length for a short prod. The cams are made of apricot wood; slices I took from a branch to make buttons... The roller nut is a section of an oak branch. Trigger pull is very light and there is no safety either
![Proof of concept pulley bow CXTTk5k](https://i.imgur.com/cXTTk5k.jpg)
![Proof of concept pulley bow ObBVVuih](https://i.imgur.com/obBVVuih.jpg)
![Proof of concept pulley bow MAd54qOh](https://i.imgur.com/MAd54qOh.jpg)
![Proof of concept pulley bow 8jbr1Qch](https://i.imgur.com/8jbr1Qch.jpg)
![Proof of concept pulley bow YVcxbXqh](https://i.imgur.com/yVcxbXqh.jpg)
![Proof of concept pulley bow Qz0NA0qh](https://i.imgur.com/Qz0NA0qh.jpg)
![Proof of concept pulley bow 2pFEM78h](https://i.imgur.com/2pFEM78h.jpg)
![tongue](https://2img.net/i/fa/i/smiles/icon_tongue.png)
I've made a couple dozen bows but have yet to make a serious, working crossbow. The precision work required for them seems to be the challenge.
It's more of a prototype toy than a serious weapon. The bow draws 4lbs at 12" and shoots bamboo skewers. I wanted to see if a simple roller nut mechanism could be done with crude materials (worked fine with a 25lbs draw) and if I could wrap my little head around how wheelie bows work (still not too sure). I was inspired by this crossbow's mechanism: https://thearbalistguild.forumotion.com/t774-compound-project
There is no let off on these round cams, but they do allow a much longer draw length for a short prod. The cams are made of apricot wood; slices I took from a branch to make buttons... The roller nut is a section of an oak branch. Trigger pull is very light and there is no safety either
![Proof of concept pulley bow CXTTk5k](https://i.imgur.com/cXTTk5k.jpg)
![Proof of concept pulley bow ObBVVuih](https://i.imgur.com/obBVVuih.jpg)
![Proof of concept pulley bow MAd54qOh](https://i.imgur.com/MAd54qOh.jpg)
![Proof of concept pulley bow 8jbr1Qch](https://i.imgur.com/8jbr1Qch.jpg)
![Proof of concept pulley bow YVcxbXqh](https://i.imgur.com/yVcxbXqh.jpg)
![Proof of concept pulley bow Qz0NA0qh](https://i.imgur.com/Qz0NA0qh.jpg)
![Proof of concept pulley bow 2pFEM78h](https://i.imgur.com/2pFEM78h.jpg)