There's at least one picture of Chan Tai San using one with spring arms on the CTS Stories thread.
http://ezine.kungfumagazine.com/foru...=34317&page=31
#451 04-07-2005, 03:14 PM
lkfmdc
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Sifu Chan had designs for literally hundreds of different kinds of dummies, we set up a few, but space, and other practical considerations prevented all from getting set up....
(see attached pic)