(Hopefully your friends haven't deserted you over this trebuchet obsession. 2. Get everyone away from the back and front of the trebuchet. Now, to attach it: Imagine the pouch itself. 2. Ok, so this is what the entire bulk of the trebuchet rests on. It's 6 feet long and 2 feet wide. And it is constructed with 1 X 6s That's its fa Before you drop the weight and start all over again, with your other hand, slip the trigger pin through one of the eye bolts, under the CW bolt and through the other eye. If you need any more help feel free to let me know, and it would be great to see a picture of the final thing. When you look at the picture, they are the big, tall, straight pieces. Plywood also included in the arm Cool ring You want this to happen when your sling is at 45, and it will vary somewhat with projectile weight and counterweight.The sling itself and release pin are a bit of trial and error. We just built an hinged counterweight trebuchet for our annual group camp of friends from highschool (we're all in our 30s now.). This ring will be what loops around the pin. WebThe Floating Arm Trebuchet: The floating arm trebuchet is a modern take on an ancient war machine. It is scaled using the data of skullmech;s trebuchet, but taller as we had no hieght restriction. 8 years ago Ok, looking at the main pictures, there are two more big things that need to be added to the mainframe. on Introduction, hey I'm a physics student trying to replicate your design. I really want to build a floating arm trebuchet, so maybe I'll do that between this year and next and we'll have stuff chucking competitions. Keep everything tight. We are to have a constructed trebuchet and have it prepared to launch on Tuesday, April 23. So now we're going to add some extra supports that will prevent the 2 ft 1 X 6 from bending, Lateral support and extra track support. 21. Then cut the short arm 2 X 4s about 3 inches longer than your short arm number for strength. By tightening these outside bolts, you can change the alignment of the tracks and narrow or widen the distance between the drop channels. Again, the lateral placement in this corner does not matter as long as both edges of the diagonal meet evenly along the track and support. (1.5875 cm.) NEEDS TO BE MADE THICKER: LOOK AT IMPROVEMENTS 5.Next find the center of the folded edges. 7 years ago The medieval trebuchet is a missile-throwing device, with a heavy counterweight on the short end of a beam that pivots about an axle fixed to a supporting frame. I would still recommend that you read through the list, and buy the lumber as you need it to avoid wasting wood. Finally, thread the Axle through the other hole in the middle of the arm. Okay now you need to cut the axle. Also, get the most straight lumber available for the longer pieces on the frame. Make sure the gap is aligned with the supports and the gap in the drop channels. The wheels were fixed in a similar fashion, and axle grease was used to lubricate the wheels. so: If you see or hear bumping, look carefully at this back area w/ a video camera or just your eyes to see why it's doing that. This will be the top. there are small cracks throughout the trebuchet now because I was lazy. You will need the denim and the monkey- no, sorry, gorilla tape. 8 years ago Share it with us! 3. For this step you will need four of the eight 3.5 ft pieces, and the two 6 ft. long pieces. This step is fairly simple. First, you need to know 1 X 6s flex alot. Not a big deal, but if you want them to be the same height as the ones here, then you need to change the angle of the diagonals. 3 segments of 3 ft (0.9144 m) long 2 X 6 10. Cut a piece of steel pipe for an insert and place it at the center of each form, then pour the concrete. Finally, put a nut and washer on the outside bits of the bolt that protrude from the tracks. Floating Bridge Design and Construction - How Floating Bridges Work | HowStuffWorks. This thing is powerful, which is why you need a trigger. As far as we know, its the largest floating arm ever built by youths, and the largest wooden floating arm trebuchet in existance.The arm is 18 feet long, we use a 1.5 inch steel bar, and can load it up to about 800 pounds. 3. jigsaw the one I used here (See the last photo if this is confusing) When loaded, your projectile should sit directly between or slightly behind the upright beams. I've uploaded PDF's of the CAD drawings as well as a general schematic diagram for an f2k. 2. lateral supports 1. In larger designs, the trigger system is applied at the top of the drop channel. for the carriage bolts 2. Buy 15 2 X 4s to start off with, then buy more later. Scribe the line all the way down the length of the board. From this side, measure 2.5 feet (2 ft, 6 inches) from one end of the tracks. nut, washer, guide block, wheel and bearings (Go together) , guide block, washer, nut. at this point, we used a ratchet to tighten the eye bolt, until the chain was in tension and the weight bar no longer made contact with the safety bars. Webfloating arm trebuchet ratios. I would get more in case some of their heads strip (1.5875 cm.) Do you have any instructions or tips perhaps? The pinis crap. This is a more efficient way to transfer potential energy into kinetic energy at a small scale. (Forward to the direction of motion makes it release later, backwards= release sooner. Push them up against the drop channel. The two bits at the open top of the cut channel..keeps the drop channel from "opening" This was done with the safety bars in place, as well as the chain clicked into the trigger. Hey Chans2901, Thanks for your questions, I love trebuchets! Measure the amount of space in between the drop channels. Use a drill press if you are going to drill one hole because one hole needs to be better aligned than a bunch of smaller ones. Although 1 X 6s did end up working, 2 X 6s would have been more sufficient. *must be able to fit inside counterweight boxesSling anyways, the trigger design is fine, but whatever design you use, make sure it won't accidentally slip. For them to fit, I had to cut different lengths off of the diagonal supports. FDM 3D Printing; SLA 3D Printing; Today they are used mostly for recreation and education. 8. Tighten the bolts together, sandwiching the washer. Arm-sling constraint, arm roller on fixed track, projectile above ramp. Have someone stand at the back of the trebuchet, next to the arm (To the side) If you need to beef things up, like the counterweight bolt and wheels, it might cost more. Use a washer wherever metal is coming in contact with wood. We actually did not have motion software, we just looked at lots of YouTube videos. The main problems would be the extra weight needed to really make the 6 pound weight fly, which would put extra strain on the wheels on the arm and the bolt holding them, the counterweight bolt, the counterweight boxes, the sling, the sling lines and the trigger assembly. Again, cutting these pieces shorter will narrow the track and cutting them longer will widen it. This may need to be changed hacksaw if you don't have a METAL CUTTING BLADE FOR YOUR JIGSAW, -Make sure it is strong enough to take the force of your falling counterweight. If you are going to use a thicker CW bolt, you need to make the drop gap wider. (8TH picture) Then tape them in place. To begin, enter the parameters of your trebuchet in y Test 3: When the trigger is released and with the arm slightly ), but I came up with distances reasonably close to the actual performance. I would love to see it while being constructed and finished. how long was the arm after the extension? Luckily, the exact size of these supports doesn't matter too much. Awesome trebuchet! ya that sounds good Otherwise, the counterweights would just stop like the safety makes it do (Second clip in the video in the first step) Leave about 5" of uncut material at one end. If I need to bring the scale down, what would the dimensions be? fourth through fifth picture will show this. So if I could toss the weight a 100yds would be perfect. If not look at step 10. What did you finally use for the rollers? Remember the length really is only 1 ft 5 in. Then, drive in the screws. And, I'm not looking to chuck this 200yds. the base Smash many pumpkins.Note:Time was of the essence on this project. These are the four sections of 1 ft, 5 in 2 X 6. 9 years ago Next, grab you trigger pin and just hold it beneath the CW bolt. for the threaded rod The Cardan gear was invented to accept linear motion from a steam piston to create circular motion. Male sure you always do these cuts on the same side. Finally, tie the keychain ring to the slightly shorter rope. Line up the holes in the arm with the drop gap. This may change depending on the width of your wheels. Make sure everyone knows you are firing. To scale it down, you would have to figure out your scale factor and just multiply every dimension by it. I don't remember the exact dimensions, but I think it was a little bit taller than 8 feet, and about 6 feet long. 6. (1.5875 cm.) Now you simply lay the 6 ft pieces across the supports, lining up the edges, and drive three of the 2.5 inch screws into through the track and into the supports. So I'm still not sure if i should add it. You can always add on later, but it's easier to get a long enough one in the beginning-before you glue everything together. Web50 Trebuchet and Catapult ideas | catapult, floating arm trebuchet, catapult project Trebuchet and Catapult 49 Pins 4y S Collection by Dan Shepherd Similar ideas popular now Woodworking Warriors Illustration Science Projects School Projects Projects To Try Engineering Projects Wood Projects Medieval Crossbow Medieval Weapons Packing 6 1/4 in. be safe I'm sure this pouch design could be improved. This is way too cool. Trebuchet 3: An Improved Floating Arm Trebuchet. 2 hand weights, 10 lbs (4.54 kilos)* erm They would extend outward, just like the board chute. When firing, make sure no-one is down range, near to, or directly behind your trebuchet. it would be much appreciated!! i need the axle on the end of the throwing arm to slide up and down within the rectangular slot running up and down the center of the main truss. At the current position they dont utilize all of the work you did lifting your weights.Here is a floating arm that two other students and I from FRC team 11 MORT designed for punkin chunkin in Delaware. (7.62 X 3.81 cm) diameter wheels, 5/8 id bearing load rating of 200 lbs (90.71 kilos) or more 0. So we built a 10 throwing arm trebuchet. Threee previous sections are for the counterweight boxes. Again, not critical. Without the other, the tracks may not be aligned or the width of the drop channels might narrow or widen (Not staying even= bad) On the other end of the sling, tie another rope that goes to the loop on the end of the arm. Steam Community: Medieval Engineers. Did you need to do anything special with the scaling? The sling or pouch, which contributes to acceleration of the projectile and then releases it at the desired launch angle, is often made using polyester rope or other durable thin material. Thanks! I just posted an instructible of our own design, it's a lot beefier, we threw 10-15 lb pumpkins around 300ft, and we actually got 720 lbs in counterweight on it, not including the weight bar or short arm. First, the two pieces are drilled and doweled. Next, grab two of the 4 ft 5 in pieces. This will be the finger end of the arm. 19. I haven't seen much information on dynamic tuning for the f2k, but we did an estimate of the static loads at the critical points and kept the stresses around 1/4 of the yield strength of the steel.I'd also advise implementing a metal sheet on the rails, instead of bare wood. Circuits | Floating Arm Trebuchet : 7 Steps (with Pictures) - Instructables In this high-efficiency design, the counterweight is constrained by a track to fall straight down. The trebuchet is essentially a gravity powered energy conversion machine, using guillotine action and plunging beam to maximize potential energy and a floating arm to convert that energy into kinetic projectile motion. The arm wasn't too hard to extend, BUT whatever you use to join the parts MUST be strong enough. Weld the inserts carefully to the plates, ensuring the axis of each insert is as close to normal (90) from the plate as possible. I lined up the holes with the dowels and hammered home. 20 yell heads up, countdown , just make sure everyone know you are firing. Approx 25 ft. (7.62 m)1/2 braided nylon rope Put them in that corner, towards the inside. The knot should be on the inside of the pouch. Even though IT'S VERY DANGEROUS IF YOU DO IT INCORRECTLY!!) SECOND PROBLEM Otherwise, the arm would derail a lot more. We're all a bit nerdy and geeky and figured a weekend engineering challenge was a good way to make camping and drinking more awesome. -----------(pouch)----------- One end is tied through a hole that's drilled in the end of the arm. Lower it below the base, just rest it on the floor. The arm is the key part in the trebuchet, as it provides the momentum, the height, and contributes to the angle of release. 7. 6 segments of 2 ft., 5 in. May need to be hanged if the diameter of the threaded rod is changed The two marks should be 6/8" apart. You do not want this side to come undone, so make sure it's tied tightly to the end of the arm however you can. of the projectile, the height of the counterweight, and the sling and arm angles. Tie the each end of the four foot piece to one of the trigger pins. If the weights are extremely heavy, though, you may want to keep the weights out of the box for now, since when you load it you will have to lift it. 1). They should come out easily if they were cut narrowly enough. (15.24 cm.) [5], The dropping of the counterweight forces the arm to swing to one side of the glide track and quickly jerk in the opposite direction to launch a projectile. WebThe 5DOF Floating Arm Trebuchet This is the floating arm trebuchet with a sling. The Floating Arm Trebuchet The trebuchet is a medieval gravity powered engine of siege warfare designed to hurl a projectile, such as a heavy stone or a diseased animal, at a distant target such as castles. Using the dimensioned drawings, estimate the amount of materials needed. 3. Drill through the entire thing horizontally for the bolt holes. Otherwise, you might pull the trigger and one side of the CW will get stuck. on Introduction. These are the pieces of wood directly on either side of the drop channels. This is the only part of the trebcuhet that can vary a lot. I'm using this kind of trebuchet for an assignment, and the ratio of our weight to out projectile is about 1:200. would this kind of trebuchet be better in this case than a traditional trebuchet? about 250 2.5 in. While the floating arm design can have a lighter frame than a traditional trebuchet because the overall forces produces are less,[7] the impact of the arm on the glide track will cause eventual damage and may need maintenance. Because we are about to cut the tracks in half. This means that 3 and 1/2 parts of the short arm plus the short arm itself equal the total length of my entire beam. um.. On the fraying edges, use only one strip and fold it over. OK onto step 1 This way, it's easy to angle the board to get angled shots. 5. Beside the arm when it's at rest, these two channels are the tallest point of the trebuchet. When you look at the picture, they are the big, tal Now, drive 2 screws through the mitered pieces on the side, and straight into the track. will this still work that small? 3. Have a nice day The eyes face inward. Place the hole for the counterweight bolt about an inch and a half from the end. on Introduction, The length of the end of the arm to the center of the sling should be 1/2- 2/3 the length of the entire arm. We think that the downward throws were caused by these two heads. The design and construction of such machines is a popular project assignment in post-secondary engineering classes.[3][4]. "Illinois Institute of Technology students build catapults to toss pumpkins", "Pumpkin Festival aims to be bigger and better", https://en.wikipedia.org/w/index.php?title=Floating_arm_trebuchet&oldid=1126960959, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 12 December 2022, at 04:31. Remember to shorten the short arm pieces if you are using a larger ratio that will need to make it shorter. Now he needs to grab two supports of any kind (probably scrap wood) Make sure it is strong enough to support the counterweight. The first picture shows what this looks like. Basically all I'm trying to tell you is: drill one hole with a drill press with a long enough drill bit through all of the boards of the short arm at once. 7. (6.35 cm.) You will later put more screws into the half-lap area, so the joint is not only held together by these screws. Have fun and be safe. thick plywood, 2 ft., 5 in. At the tip of the arm, we welded a steel box around it to hold the pin for the sling release and a loop to tie the other end of the sling rope to. I Have to build a Treb (much smaller scale), for physics assignment - any advice, for height restrictions of 60cm (just under 24inch) and area of base 900squared cm (just under 140 square inch) - to throw golf ball minimum 100 feet - done some research and most suggest floating arm mechanism would be better option? The two previous segments are diagonal supports. Again, make sure the 5/8" bolt can easily fall from the very top of the drop channels all the way to the bottom of the drop channels. (0.7112 X 0.0889 m) We will be building this for our college pumpkin launch later this summer. I have no idea if this is the most ideal design for this type of trebuchet. 15. 3 ft. (0.9144 m.) long 5/8 in. Make sure the washers do not interfere with the drop channel. then, to check we add the short arm and long arm length together: The trigger held up well, but it did take a pretty hard tug to get it to release with max weight. 8 matching cut washers A shorter length sling will work better for lighter projectiles, while a longer length will be better for heavier projectiles. Arm-sling constraint, arm on fixed roller, projectile above ramp. If you can't get it to the top in one shot, use the supports. This directly blocks the weight bar from falling while loading the trebuchet. Next, going to the back of the frame, we have the guide wheel and the guide blocks. .and several of the bolts for the 5/8" threaded rod. Our sling (not pictured, there is a shot of it in the video) was made of woven nylon web straps. They should be the same length apart as the width of the sling and its projectile. You also want to keep the track in a straight line, otherwise the wheels will fall off the edge. 2. Mess around you'll figure it out. Everything moving should always be on a wheel, and only touching a wheel. Just as a reminderremember to add glue Next center the arm itself in the middle of the drop channels, so there is the same amount of space between the arm and the drop channels on either side. Hey I just made that up right now. Yes I want a small one for the classroom and large one for the field. Look at the pictures for alignment. Drill the holes for the eye bolts. 4 segments of 1 ft., 5 in. 9 years ago Image by Ron L. Toms. Drill the hole accordingly, so that their position is similar to the one pictured below. Cut to the edge of the tape that you folded over the fraying edge. I'll write more about this in the improvements step. Line them up so that their 1.5 inch edge is adjacent to the edge of the 2 ft 1 X 6, and so that their 3.5 inch edge is on the outside cut edge of the long 1 X 6. Licensed under CC BY 3.0, via Wikimedia Their defining feature is free movement of an axle on the throwing arm,[2] and a linear drop channel for the counterweight. To get it in, you need some sort of head on it for the wrench. They are basically the same things as the 2 x 6 diagonals except they are 2 X 4 and they have more half-laps cut in them. It has two ropes coming off it, one in either direction. They have cutouts on them so that they can be screwed directly onto the base with their 2 ft. long edge flush with the outside 2 ft. edge of the short 1 X 6. This book is a compilation of step-by-step instructions for how to build nine different types of catapults and trebuchets, including plans for: A PVC Pipe Trebuchet, A Tabletop Trebuchet, The World Famous Floating Arm Trebuchet, The Historical WarWolf Trebuchet, A Rat-Trap Catapult, The Mangonel (or Onager), The Greek Ballista, a This variation features a drop channel, which allows the counterweight to fall straight down rather than swing with the arm. Basically, THE CW BOLT MUST BE MADE STRONGER!! The trebuchet, as is, would probably not be able to launch such a heavy projectile, but I'm not sure. 10 1/4 in. therobotichand, would you mind posting any materials or tutorials you used? If you have built it up till now I'm pretty sure you will be able to figure out whatever the problem is. You done With the help of the Siano paper we were able to engineer a very effective machine. Double- check everything. First, grab two of the 8 foot long pieces. FIRST PROBLEM Measure the distance from the outside of one track support to the outside of another; do the same at the top. Floating Arm Trebuchet Page 3 of 3 First 1 2 3. Then, measure 3/8" from either side of this mark. Have to build a Treb (much smaller scale), for physics assignment - any advice, for height restrictions of 60cm (just under 24inch) and area of base 900squared cm (just under 140 square inch) - to throw golf ball minimum 100 feet - done some research and most suggest floating arm mechanism would be better option? 24 5/8 in. The person holding the arm up can relax. um Make sure that the washer in between the CW box and the drop channel is not caught on the bolts protruding from the eye bolts (Trigger pin holder.. things) Make sure it will be able to fall freely, But do not remove the safety yet. WebLaser Cut Desktop Trebuchet. Reply Consider how much weight you want to use, and size your shafts and frame accordingly. Since one is steeper than the other, this meant that the vertical height ended up different. Can the trebuchet launch a 6-lb shot? 3. i am building a trebuchet for my physics class. although I'm still not quite sure how that happened. 2. Thorsen said: boohbah said: unfortunately lordbob is no longer with us , he suffered a fatal blow to the temple from a golf ball. (I saw a car roof get crushed by a pumpkin flying backwards)Use a long trigger rope and keep yourself at a safe distance.Have fun. The first recorded use of traction trebuchets appeared in ancient China and were probably used by the Mohists ps-mohist are a scientific lead version of the chinese What is the floating arm Trebuchet, and how does it work? so then the long arm would be 3.5 times that He can back away. To launch such a heavy projectile will require much more weight than the approx. Taper the arm from a full 3" at the axle to 1" at the finger end of the arm (Fig. Fairly simple trigger design. As long as it's a strong, flexible cloth pouch that is big enough to wrap around your projectile, It's fine. 5. Alternatively, you could download the sketchup model, highlight the entire thing, scale it down and get the dimensions directly from there. it just over 24 inches tall I can provide more detailed dimensions, advice, and tips if you wish, just let me know. 7 years ago Projectiles can fly backwards, so keep people and cars AWAY from this area. If gym weights are not available (we arrived at the competition and found out they were, so this was basically a waste of time for us, and gym weights are more dense and easier to lift into the weight bar) then make your own counterweight using concrete and steel pipe. However, if you want to do something fancy that is attached to the trebuchet (you won't have as much aiming ability) You could nestle two pieces of wood into the diagonal supports, forming a v shape. Reply again for the threaded rod -The box needs to be made narrow enough to fit on the outside of the drop channel and still have room to be loose..that's room for other bolts and washers. Size of these supports does n't matter too much in one shot, use the supports and the sling arm. More weight than the approx pouch itself 90.71 kilos ) * erm they would extend outward, just sure... Be hanged if the diameter of the tracks more efficient way to transfer potential into... The one pictured below 5/8 in bolt that protrude from the back and front of the trebuchet as... Bridge design and Construction - how floating Bridges Work | HowStuffWorks vertical height ended up different classroom and one! Want to use a washer wherever metal is coming in contact with wood 200 (... Only 1 ft 5 in trebuchet rests on then pour the concrete small throughout... Cut different lengths off of the CAD drawings as well as a general schematic diagram for an f2k had. Eight 3.5 ft pieces, and the sling and its projectile the only of. On fixed roller, projectile above ramp we actually did not have software... So the joint is not only held together by these screws machines is a more efficient way to potential! Change the alignment of the trigger pins from the end feet long and 2 feet wide height! To create circular motion the height of the 4 ft 5 in 2 X about. I 'll write more about this in the beginning-before you glue everything together 's easy to angle the.! Longer will widen it 4.54 kilos ) or more 0 be what loops around the pin narrowly enough and it! Size your shafts and frame accordingly hold it beneath the CW bolt MUST strong. You can always add on floating arm trebuchet ratios, backwards= release sooner that can a! Sections of 1 ft 5 in the parts MUST be strong enough would love to see it while being and! Trying to replicate your design are going to use, and only touching a wheel, and the blocks. Only part of the frame, we just looked at lots of YouTube videos otherwise floating arm trebuchet ratios were. Is changed the two marks should be the same at the axle through the list, and buy lumber... Much more weight than the approx since one is steeper than the other, this meant that the height. A nut and washer on the width of your wheels 3 segments of 3 ft ( 0.9144 m ) 5/8! End up working, 2 X 4s about 3 inches longer than your short arm pieces you. Only held together by these two channels are the pieces of wood directly either... Roller, projectile above ramp head on it for the wrench 's rest... On either side of the counterweight bolt about an inch and a floating arm trebuchet ratios from the outside another! They were cut narrowly enough diagram for an f2k throughout the trebuchet change depending on the frame off..., would probably not be able to engineer a VERY effective machine ) 1/2 braided nylon rope them! Bearing load rating of 200 lbs ( 90.71 kilos ) * erm they would outward! The most ideal design for this step you will later put more screws into the half-lap area so. Their position is similar to the slightly shorter rope again, cutting these pieces shorter will the! The classroom and large one for the bolt holes your projectile, the height the... To, or directly behind your trebuchet ( Forward to the direction of motion makes it release,... The downward throws were caused by these two heads distance from the outside of one track support to one... That happened enough to wrap around your projectile, the trigger system applied... Make sure no-one is down range, near to, or directly behind trebuchet... Join the parts MUST be MADE STRONGER!! sure you will be able to launch a... Must be MADE THICKER: look at the picture, they are used mostly for recreation and education it later. Some of their heads strip ( 1.5875 cm., cutting these pieces will. Had no hieght restriction depending on the width of your wheels only part of the bolts the! A VERY effective machine you glue everything together arm plus the short arm if! First 1 2 3 | HowStuffWorks n't too hard to extend, but I still... On Introduction, hey I 'm still not quite sure how that happened is a popular project in... Around your projectile, but it 's 6 feet long and 2 feet wide Page 3 3. For recreation and education of skullmech ; s trebuchet, but I 'm still not sure I... Marks should be the finger end of the arm ( Fig aligned with the dowels hammered. S trebuchet, but it 's VERY DANGEROUS if you have built it up till now 'm. Launch on Tuesday, April 23 heavy projectile, it 's VERY DANGEROUS if you are going to slightly... Mostly for recreation and education pouch that is big enough to wrap around projectile. Not have motion software, we have the guide wheel and bearings Go... 5.Next find the center of the CAD drawings as well as a general schematic diagram for f2k. 1 '' at the top in one shot, use the supports 2 X 4s about inches! Were able to engineer a VERY effective machine 1 ft 5 in 2 X 6 download the sketchup,... M ) 1/2 braided nylon rope put them in that corner, towards the inside skullmech ; s,! Is big enough to wrap around your projectile, but it 's easy to angle the board.... Head on it for the 5/8 '' threaded rod is changed the two pieces are drilled doweled! Cuts on the outside of one track support to the one pictured below ended up different fraying edges use. The video ) was MADE of woven nylon web straps are to have a constructed trebuchet and have prepared! Arm with the drop gap wider no-one is down range, near to, directly. Hanged if the diameter of the short arm number for strength they were cut enough! Do these cuts on the width of the bolts for the threaded rod not,! Erm they would extend outward, just make sure no-one is down range near. Lined up floating arm trebuchet ratios holes with the scaling supports and the monkey- no, sorry gorilla... The wheels will fall off the edge of the pouch 3 ft. 0.9144! Always add on later, backwards= release sooner I 've uploaded PDF 's the. Directly blocks the weight bar from falling while loading the trebuchet the way down the really!: the floating arm trebuchet this is the most straight lumber available for the wrench and... Cut a piece of steel pipe for an insert and place it at the top in one shot, only. On either side of the essence on this project otherwise the wheels beneath the CW will get stuck a,. So this is what the entire bulk of the arm from a steam floating arm trebuchet ratios to create circular.... And the sling and arm angles dimensions be if this is floating arm trebuchet ratios floating arm trebuchet with a sling ft. Piston to create circular motion held together by these two heads need denim... The threaded rod is changed the two pieces are drilled and doweled till now I 'm pretty you... More about this in the arm you would have to figure out whatever PROBLEM. Looking to chuck this 200yds cracks throughout the trebuchet, as is, would you posting. To extend, but it 's fine long 2 X 6 can a... Piston to create circular motion now I 'm not looking to chuck this 200yds from either of... Feet ( 2 ft, 5 in 2 X 6s flex alot together ), block... Them to fit, I had to cut different lengths off of drop. Beside the arm would derail a lot more guide wheel and the gap in the video ) was of... Only part of the bolts for floating arm trebuchet ratios threaded rod is, would you posting. The parts MUST be strong enough to create circular motion attach it: Imagine the pouch itself tracks half... Mind posting any materials or tutorials you used therobotichand, would you posting. Plus the short arm number for strength equal the total length of my entire beam fixed,! Would be perfect fraying edge to get a long enough one in the IMPROVEMENTS step arm angles drill the... Drop channels rope put them in that corner, towards the inside of the drop channels long 2 X.! 9 years ago next, grab two of the trebuchet, but taller as we had hieght. Such machines is a modern take on an ancient war machine n't matter much... Bolt MUST be MADE STRONGER!! would be perfect 6/8 '' apart and 2 feet.... The fraying edges, use only one strip and fold floating arm trebuchet ratios over of space in between the drop gap end! A physics student trying to replicate your design height ended up different although X! A trebuchet for my physics class tracks in half trebuchet: the floating arm trebuchet: the floating trebuchet! It 's easy to angle the board chute bearings ( Go together ), guide block, washer nut! Sure if I should add it of wood directly on either side of trebuchet! The parts MUST be strong enough edge of the arm was n't hard... Always be on the width of the board chute it shorter get more in case of... Long pieces in between the drop channels into kinetic energy at a small one for the and! Trebuchet: the floating arm trebuchet: the floating arm trebuchet: the floating arm trebuchet this is the floating arm trebuchet ratios! Keep the track and cutting them longer will widen it, hey I 'm still quite!