I doubled up the rubber.
Now we are talking!
The stronger bandset pushes the weapon into the realm of deadly weapons. The pencils now go through a rubber door mat, which withstands the 20 mm steel ball hits from my strongest slingshots!
As a matter of coincidence, some better quality pencils arrived (Faber-Castell HB, 1,18 Euros for twelve pieces including tax). Much more solid. Just in time.
But in order to push the envelope even farther I took a damaged carbon fibre arrow shaft, sawed it into five pieces and glued tip holders in. Then I screwed the field tips in. The arrows now weigh 9,6 gramms (154 gr).
The impact is absolutely astounding. They go into a massive wooden plank and I need tools to get them out again. They even pierced through a PET water bottle and still stuck in the plank. Distance 8 meters, the flight is absolutely stable.
I reinforced the string catchers (glued in a steel nail in fact), so the weapon withstands the much harder impact of the 300% pretensed bands (3,5 cm x 2,5 cm x 11 cm relaxed length).
You gotta post a video of the modified version!
ReplyDelete-79zombies
Please post a video of the modified version. I'd like to see the new version fired at fruit. Your videos are awesome. Thanks!
ReplyDeleteCan you post a instructable to make this beauty?
ReplyDeleteand of course i'd like to see a video of this version :)
Treble the rubber!, ;-), seriously, please poat a video, thankyou.
ReplyDeleteCan't wait to see the updated version in action !
ReplyDeleteFV
You are gonna poke your eye out someday.
ReplyDeletePerfect timing, I have an essay due soon XD
ReplyDeleteLOL, like everyone else, I also urge you to make a video of this 'improved version'. I think of it as one of the best examples of just how much fun an innovative mind can be. Well done, Joerg.
ReplyDeleteNow, like everyone else, I also want to see the blueprints for this so I can make my own.
Joerg, beautiful job on the repeater. The ammo is very interesting. I have done something similar, making darts with arrow field tips, but using shafts made of soda straws instead of sections of carbon tubing. I think the soda straws shafts would be much too fragile in your repeating slingbow, but they work perfectly when launched from a blowgun using a sabot. From 10 meters, the field points can punch a hole all the way through an apple, with the entire dart exiting the apple. You can view the darts and sabot at http://blowgun.lefora.com/2010/01/18/screw-in-field-points-for-arrows-used-in-darts
ReplyDeleteScroll down a ways and you can see the hole punched through the apple, as well as holes punched in an empty soda can.
Besides the field points, a trocar tip is another way to make a projectile with amazing penetrative powers. More sabot-launched blowgun darts, this time with trocar tips, can be viewed at http://blowgun.lefora.com/2010/01/18/curare-five-owwwww
ReplyDeleteJoerg, somehow your badass pencil launcher reminded me a "chu ko nu".
ReplyDeleteA Repeating crossbow from China
http://en.wikipedia.org/wiki/Repeating_crossbow
And here is a tip...
if you wanna make the revenche look even more nerdly, try to adapt a automatic system to shoot.
something like this guy did.
http://www.youtube.com/watch?feature=endscreen&NR=1&v=QS4RKoRyTik
The pencil Launcher looks great but once you shoot it looks better it shoots cool and powerful
ReplyDelete