Extinct Expertise: Trebuchet
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Description
Trebuchet
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About This Video:
I built a trebuchet, a type of catapult that uses a counter weight to store gravitational potential energy which is then used to fire a projectile via a sling. I first built the frame which was made of two tripods set close together. They were of wood and lashed together with cane. Then I made a basket from cane to hold the large rocks that would act as the counterweight. For the sling I used bark fiber from dead branches of a certain type of tree. The bark was stripped and the inner bark woven into rope. The rope was then made into a sling using 2 knots and thinner rope was used to weave the sling pouch. A simple toggle release was used hold the throwing arm in position and act as the trigger. The counter weight was then filled with rocks and pulled into position to be held by the toggle. A shot-put sized stone was then placed into the sling pouch. When the toggle was released the stone would be launched 18- 20 meters (the length of the clearing) but could undoubtedly shoot further if more weight was added. Targets were set up and destroyed. Range can be adjusted by adding or subtracting weight from the basket, while shooting to the left or right is done by turning the whole catapult while the basket is empty. The whole build took 5 weeks, the hardest part being collecting the bark fiber to make the rope. The trebuchet is a simple but effective way to deliver payloads to a target destination.
About Primitive Technology:
Primitive technology is a hobby where you build things in the wild completely from scratch using no modern tools or materials. These are the strict rules: If you want a fire, use a fire stick - An axe, pick up a stone and shape it - A hut, build one from trees, mud, rocks etc. The challenge is seeing how far you can go without utilizing modern technology. I do not live in the wild, but enjoy building shelter, tools, and more, only utilizing natural materials. To find specific videos, visit my playlist tab for building videos focused on pyrotechnology, shelter, weapons, food & agriculture, tools & machines, and weaving & fiber.
#PrimitiveTechnology #Trebuchet #Catapult
Transcription
At the brick and tile hut... Re-cycling timber from the demolished thatched workshop Cutting 6 pieces of timber to 2 m lengths Cutting cane for lashings Splitting cane so it's easier to lash with Lashing 3 poles together at one end Splaying out poles to form a tripod Setting up another tripod next to the first Cutting rough joint into the middle of a 1m long log.
Cutting a joint 60 cm from one end of a 2m log Lashing logs together at joints to form a cross Placing cross onto tripods Swinging action displayed Cutting cane for basket weaving Heat bending cane for basket ribs Assembling ribs thusly Weaving cane over and under ribs (note there is an odd number of ribs, even numbers cause doubling up) Bending the ends of the ribs down and hammering them back into the basket for strength and neatness.
Finished basket (about 60cm tall 60 cm wide) Weaving cane through basket to attach to throwing arm Lashing a small crossbar to the end of the arm to stop the basket sliding off Attaching basket to arm Tying basket to arm Testing arm and basket Bark fiber tree Dead branch from tree Soak in water.
Softened bark strips off branch Stripping inner bark into thin pieces Braiding a thick rope from fiber Tying knots to form pouch Threading thinner cordage through the twists of the larger rope to weave a pouch Finished sling (2.6m from end to end) Lashing crossbar between back legs of trebuchet and attaching a toggle A cord to hold and release toggle Demonstrating the toggle release principle.
Attaching a release pin for the sling Bending pin forward with a wedge for better sling release angle Tying on one end of sling A loop in the other end slips over pin Adding rocks to basket for counter weight Setting the trebuchet Loading the projectile into the pouch and looping the sling over the pin Fire! Adding weight to increase range.
It's going the length of the clearing (about 20 m) Setting up target A Barbarian encampment Target destroyed! A Tax dodging village Target Destroyed! A Neighboring Kingdom Target Destroyed! Trebuchet.
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7 thoughts on “Extinct Expertise: Trebuchet”
Ouch, that shot landed very shut to the camera
Gleaming side: I attain no longer distress about N. Korea anymore.Now I distress about N. Plant.
Amongst many shitty chanels that attempted to reproduction him (that i always unique had been faux), John will always be the Only.
whats' the animal that scurries off in the left of the image at 7.28?
Wild animal at 7:30?
My man went from surviving and thriving to conquering neighboring international locations.
This channel in two years: “Glimpse me invent a 7nm CPU from sticks and dirt”