- Who built the trebuchet?
- What is the construction?
- How BIG is it?
- How much does it weigh?
- What can it throw?
- How far can it throw an object?
- When can I see it in ACTION?
Q: Who built the trebuchet?
A: Constructed by
Steve Seigars---Yankee Farmer, Patrick Seigars---Yankee Farmer,
Michael Seigars---Yankee Farmer
Consultant and Builder
Chuck Willard---Hancock, NH
Welder
David Webb---American Steel, Greenfield, NH
Machinist
Paul Gingras---Mattapoisett, MA
Builder
Kerry Smith---Hancock, NH
Crane Service
American Steel---Greenfield, NH Back to top
Thanks to all who managed to help the dream become a reality!
Q: What is the construction?
A: Wood Bracing 4--8" x 12" Red Oak---fore-aft support
4--4" x 12" Red Oak---lateral support
Winch 1 1/2" nylon pull-down rope
16" winch drum with ratchet
22.5/1 reduction driven by
tractor PTO with a 15.1/1
gear reducer on tractor
Sling 20' x 1" nylon straps w/pouch
Trigger 1 3/4" wedge with 2/1 ratio
50/1 mechanical adv Class 1 lever
Fulcrum Axle 4" x 6" steel w/4 pillow blocks (ball bearings)
Q: How BIG is it?
A: Wheels 10' 1"--2600lbs each (x4)---Cut from oil drums,
1/2" thick x 18"wide---7" axle, 20' track,
20' wheel base
Main Frame 16" x 50lb/ft I beam---16' wide x 24' long
Throwing Arm 37' Total Length, 30' Long End, 7' Short End
Ratio of long to short--4.28/1
Fulcrum Height 25 Feet
Machine Height 55 Feet to tip of arm Back to top
Q: How much does it weigh?
A: The total Machine Weight is 35 to 40,000 lbs. (Approx.)
Q: What can it throw?
A: Trebuchets were designed to throw large round rocks that weigh 250lbs. Our trebuchet is designed to throw the same thing. We substitute pumpkins and other such objects for the sake of safety.
Q: How far can it throw an object?
A: The effective range for a 250-300lb. load is about 300 yards. This is with an 8,000lb. counterweight load. The maximum counterweight load is 20,000lbs.
Q: When can I see it in ACTION?
A: Every Saturday and Sunday starting on September 21, 2003 from 12:00 to 4:00PM through the end of October, weather permitting we will be demonstrating this machine. Call to verify if the weather is uncertain at 603-547-6421.
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Images In This Pane Enlarge When Clicked
The final assembly
of Yankee Siege's
throwing arm
of Yankee Siege's
throwing arm
Ready to throw!
