need to build a catapult to throw a softball preferbly made of pvc pipe?
549231
If it doesn't necessarily need to be a catapult, consider building a "trebuchet".  May be easier to build, safer to use, and might work better.  Do a google search of "trebuchet" and you should find plenty of ideas.\n\nHere's one to get you started:\n\nhttp://www.rlt.com/trebuchet/plans/pvc/
486153
Try this site! My daughter plays High School JV softball...we found this site recently. It's got some really good ones on it. Her team was already using some of them...but there were some different ones too. \n\nhttp://www.softballspunk.com/
885871
Have an elastic material such as a rubber strap and a really firm Y-shaped material. (Any material will do, as long as it is not brittle or liable to snap).\nAttach the strap to the ends of the material and you get your catapult. For greater ease when using your catapult, find a rubber strap that is broader at the centre. It ensures a better grip on the stone/ball/whatever.\n\nHope this helps=)
1047591
1. pay a workshop to do it for you\n2. put up an offer for a ready-drilled ball in eBay
1072234
If you are talking about softball, the easton cyclone is a very good bat. mine is 32 inches 23 oz. and hits the ball a ton.
898236
Most any pipe hanger would be suitable for providing support. In a home, you would typically use a strap steel hanger for these.
425733
***Important Note***\nYou should consult a petroleum engineer who is familiar with the specifics of your work if you require this information for actual field work.  The sources below are fine if you are looking for general information not to be used in the field.\n\nYou need to be more specific about the information you need.  There are several 2 7/8" drill pipes available and the weight varies.  If you need to know the weight of drill pipe that has become stuck while drilling, you have to take buoyancy into account.  Try the first link for the weight and the second link for the discussion about buoyancy.
384916
sure you could make a bat out of balsa wood, but the bat would split and break at every up-to-bat. the ball would not travel very far, the wood is not dense enough.
466512
I'm not aware that anyone sells them.  You usually have to make your own.\n\nSince aluminum bats are legal in most softball leagues, why would you want a corked wooden bat?
348629
i made one. it's as big as a softball at least.you start with 1 rubberband and tie it into knots.take another one and tie it around the 1st one(into knots) keep doing this until ball is big enough to wrap bands around. some people use an object to start wrapping bands around. but that is cheating to me
245781
Need dadication to the game for that. You can make bat with wood and ball with any soft or hard material. Like wrap plastic bags around small rock and make it soft and ready to play.
1056081
On the Mississippi I use 0000 stainless steel hooks, large brim and shad... at least hand sized or larger or chicken thighs.... I use to use 65lbs test but now I use Army "550" cord.  For wieghts I use 4 to 6 oz pear wieghts depending on the water level and current.... tie it off to a good sized limb..... you'll need it.  50lbs cats are common there.\n\nCabelas stocks most of the stuff you need. Or you can try bait shop along Old Man River
1125885
check out http://www.softballspunk.com/  and http://www.softballcorner.com/Softballcheers.asp?typ=s&srt=1
580204
Wrap a flexible plastic tube in a spiral around a plastic pipe.  Screw it.  It is really hard to make one using a screw because you can't get the fit between the pipe and the screw tight enough using household items.\n\nThat's all there is to it!  I did this for a science project about 1962.\n\nAlso, do an image search on "archimedes screw" to see some really big ones.
868260
A Trebuchet is a medieval siege weapon that uses a counter weight to provide the force to hurl the stone or fruit.  A catapult use ropes/cables/animal sinew to wind up and then when released it would throw the object.\n\nCatapults have a problem in that the transfer a lot of shock into the ground underneath them.  This made large catapults on ships or on a castle wall impracticable.  The trebuchet doesn't suffer this problem, since the counter weight can move forward.\n\nTHIS SITE IS PROBABLY THE BEST FOR YOU:  http://www.ripcord.ws/plans/plans.html\nIt offers detailed instructions on his Tennis Ball Trebuchet and you can download the plans in MS Word or Adobe Acrobat format (requires WinZip to open the plans).\n\nThis site will help you contact the trebuchet community:  http://www.ripcord.ws/\nYou may be able to get plans or advice if you join these communities.\n\n---------------------------------------------\nThis site:  http://www.io.com/~beckerdo/index.html\nHas some good instructions on making trebuchets for free.  Below are the pages that might interest you the most.\n--  The Toothpick Trebuchet:  http://www.io.com/~beckerdo/other/ToothpickTreb/ToothpickTreb.html\nCould be a good place to start for your grape tosser, and the work up to the next design.\n--  This site:  http://www.io.com/~beckerdo/other/trebuchet.html#design\nOffers a step-by-step procedure on how to build a trebuchet with pictures of each phase.  There are no blue prints here, but you can construct one from this website for free.  Once you build one then you can change to plans to scale up or down.\n\n--  Trebuchet Plans:  http://www.trebuchetplans.com/\nThis site will show you various completed trebuchets.  You can buy the kit or the plans.  Below I have listed some of the sites to find the plans.  You can go directly to that page if you want to and you will know how much the plans for each version costs.\n$14.95  the Floating Arm Trebuchet:  tp://www.rlt.com/trebuchet/plans/fat/\n$9.95 The Tabletop Trebuchet:  http://www.rlt.com/trebuchet/plans/tabletop/\n$8.95 The PVC Trebuchet:  http://www.rlt.com/trebuchet/plans/pvc/\n$19.95 Catapult Design, Construction and Competition \nwith The Projectile Throwing Engines of the Ancients and Forward by Ron Toms:  http://www.rlt.com/trebuchet/ISBN_1/\n\nOnce you have your trebuchet built you will want to know how to shoot it.  You can either learn projectile theory and do it yourself or you can download these programs and let your computer sweat it out:  http://www.algobeautytreb.com/\nIt was first designed for the MAC, but if you go almost halfway down the page you will find two versions for the PC.  You can download the zip files for free, but you need to pay $15.00 to use them.\n\nThis site:  http://members.iinet.com.au/~rmine/gctrebs.html#cwtreb
636875
They make aluminum softball bats for a reason, I like them a lot better than, say wooden bats.  I totally suggest the D'Martini....or an Easton if you don't have a lot of dough.  I've been playing for 8 years and have only dented a bat when I threw it on my way to 1st....
649221
Go to this site and poke around a bit. Lots of good softball stuff there. There is also a tips and drills area, look for it, it should give you what you need.\n\nhttp://eteamz.active.com/fastpitch/boards/fastpitch/