I've been working on a carbine rifle for the past week in a half.
I've only really been designing though. I've run into a bit of a snag however, because I need a mechanism to chamber a lego bullet into the barrel while moving both vertically and diagonally. I've been looking at other designs for a while, but I've had trouble in working out a solution. It needs to be able to chamber a single lego round diagonally with the force of pulling back the bolt to drive it.
Given those circumstances, does anyone have a solution?
It needs to be as practical, jam free, and compact as possible.
I am using the bulldozer set of technics BTW.
In an unrelated note,
Does anyone know which piece is the best bullet?
Right now I'm either going to use a round block with holes (those technic pieces) 3 or 5 pieces long. which is more effective? Permalink
I believe you will need to use a conical 1 round piece for the front of the round. That would allow the round to be angled into the breech and then set once the bolt moves out of the way. However, I have found brick guns extremely inefficient because of the friction between the barrel and the round itself. Thomas Cooper's design is probably the most efficient and compact design to what you are looking for but the power of his design is limited to the spring you use and this spring has to stay within the tension limits of Lego (which is not much). You could do a similar mech that Tom uses in his rubber band bolt action... except you would have load the bands and the bullets. Permalink