[1] Bill Pflager, email 07/03/2015 08:32 PM (stored in local folder "Trebuchet") had 4 attachments. The following data are taken from those attachments.

Counter weight

3' length ( in direction of swinging), rectangular section is 2' high and 2' wide. Distance between bottom and axle is 3.25' + 4.625"-1.25"=3.525'

Beam

From tip to bearing : 15'- 0 3/4"
From tip to hinge : 20'- 0 3/8"
From pivot to bottom of frame : 11'- 1 5/8"
From bottom of fram up to floor of shute : 12" est.
In the loaded position it looks like the bootom of the counter weight is at the same level (maybe 2i to 3" higher) than the pivot.

Counter weight bearing attachment (steel)

About 2' by 11.5' steel plates on either side of wood, embracing beam. 3/8" thick
Top plate 2' long, 7.5" wide, 3/8" thick
Front plate : 11.5 x 7.5", 3/8" thick
Axle : 2.5" diameter, 1' - 1 1/8" long

Pivot, steel brace

2 side plates : 4' long, 11.5" high, 3/8" thick
1 top plate : 4' long, 7.5" wide, 3/8" thick

Sling finger attachment

2 side plates : 4" x 8 3/8" , 3/8" thick 1 front plate : 3.5" wide , 8 3/8" high, 3/8" thick 1 top plate : 3.5" wide, 4" long

Pivot axle

Assume about 3' long judging by width of trebuchet
Assume 2/5" diameter (same as for counter weight)

Trigger mechanism

No information provided concerning size and exact location


Zig Herzog; hgnherzog@yahoo.com
Last revised: 07/22/15