Check out this discussion, complete with drawings and photos of building an ancient Chinese Triple Prod siege crossbow!
http://198.170.107.188/phpBB2/viewtopic.php?t=2447&highlight=triple+prod
http://198.170.107.188/phpBB2/viewtopic.php?t=2447&highlight=triple+prod
Last edited by kenh on Thu Aug 29, 2013 12:19 pm; edited 2 times in total (Reason for editing : correct the link to ATARN)