6/5/2023 0 Comments Pumpkin catapultTheir launched pumpkins tend to bounce instead of shatter which compliments its other unique property, that being the pumpkins create explosions on impact. They possess the same reload and fire speed of their mortal counterparts though with a notable difference. He then used a pool noodle to soften the impact of the throwing arm against the cross arm.Pumpkin Catapults are dangerous artillery units of the Spooky Faction. My husband also thought the swing arm rubbing against the wood was causing too much resistance, so he put Gorilla tape on the support arm. We made a knot in the bungee cord to make it tighter and have more force. Modification: This is where we got a little creative! First, the bungee cord appeared to have too much pull and wasn’t shooting our pumpkins very far. Step 9: Attach the cup so there is a little bit of the swing arm out, so you can pull it down! Step 8: Attach the bungee cord from the bottom eye hook to the top eye hook Place a washer and a nut on the end of the carriage bolt and tighten just enough to get the head of the bolt to sink into the wood. Insert the carriage bolt through one side of the catapult, through the throwing arm and then through the other side of the catapult. Step 7: Line up the 21-inch piece of wood (swing arm) in the center of the box already created. Step 6: Insert the additional eye hook 5 1/2″ from the top (opposite end of the carriage bolt) of the 21-inch piece of wood. This is for the 3/8″ carriage bolt to fit through. Step 5: Grab your 21-inch piece of wood and drill a 1/2″ hole 1″ from the end. This will be the support for the cross arm. Step 4: Take your remaining 10 1/2″ inch piece of wood and cut angles on either end. This should be attached to the rear of the uprights. Step 3: Screw the two upright 10 1/2″ pieces into place and then the 7-inch piece across the top of the two pieces you just attached. Holes for the carriage bolt should be drilled 2 5/8″ from the front of the catapult. Screw one of your big eye hooks into the end this will be the front of the catapult. Step 2: Take your two 18 inch pieces and your two 5 5/8 inch pieces and screw them together on the outside of the structure. So my husband was the adult in this situation For anyone that knows me well, I’m not just a kid at heart, I’m a little clumsy too. Otherwise, a table saw will need to be used by an adult only. It may be easier to go into a store such as Home Depot or Lowes and ask them to cut it for you. Step 1: Cut all wood according to the measurements above. Gorilla tape, to decrease the resistance of the bungee cord (Also a last minute addition!).(Not completely necessary, but it was a last minute addition made by my husband to increase the longevity of the cross arm.) 3/8″ x 8″ carriage bolt with one washer and a nut to fit.A bunch of small drywall screws at least 1 1/4 inch.A plastic cup or container to hold the mini pumpkin in.1 piece of wood, 21 inches long (One edge should be cut on an angle.).The relief cut should start 4 1/8″ from the front of the catapult.) 2 pieces of wood, each 18 inches long (Both of these pieces need to have a square cut out too for a joint for the uprights.3 pieces of wood, each 10 1/2 inches long (2 of these pieces need to have a square cut half the width of the wood on one end to form a “joint”.).2 pieces of wood, each 5 5/8 inches long.Where we determined what worked for us and what we needed to improve.Step 5: Analyze Results / Draw A Conclusion. He recognized that the smaller the pumpkin the farther it will go (HOORAY!).Is there anything else that can improve this or make the pumpkins go farther?.How far did he think the miniature pumpkins would fly?.The Scientific Method Step 1: Ask A Question. My five-year-old is quite analytical, and you know I love sneaking educational concepts into our crafts, so prior to explaining how this contraption would be built, we reinforced the Scientific Method. This fall-themed STEM project was truly HOURS of fun! Nothing gets my boys more excited than telling them they’ll get to smash stuff. My four boys (Yes, I recruited my handy hubby for this pumpkin project) and I made a miniature pumpkin catapult for kids to launch pumpkins across our driveway.
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