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Uploaded on Jun 13, 2011
The Slingshot Channel has presented many slingshot crossbows already, but all have been rather long and narrow. This one is different, as it is following the medieval crossbow design by a great deal. The main differences is that rubber bands are used instead of a steel spring, and heavy lead balls are used as ammo rather than bolts.
It is amazing how effective rubber is, with just 48 lbs of draw force , 38 foot pounds of energy are achieved. The 576 gr (36 gramm) lead ball (.75") flies at 177 feet per second.
The whole weapon is of course home made, from scratch, took a whole Sunday. The steps are documented here: