/diy/ - Do It Yourself

>>1499186
>How'd you cock that thing in the first picture in the thingiverse.
Top-slide prime. You're moving the whole plunger tube and ramrod backwards until the plunger hits the catch.
>>1499222
>does it shoot as fast as the caliburn spring gun
Range is from 100fps to 150+fps. I'm still working on evaluating the tied elastic cord length to fps relationship so I'm not sure what the ceiling is yet. Highest numbers recorded were with scratch-built beige foam darts.

This platform doesn't have anywhere near the potential fps ceiling of the Caliburn though because that has twice the plunger stroke/volume and higher available spring loads. This design is an experiment in a reduced size and reduced cost platform.