how can you make a raft move on its own?
406051
You can't. there must be some form of power. for every action there is a re-action. It's like getting a mule to move, without an incentive.
917846
Lots of variables here. Do you want one that will move with directional intent, or one that just floats?\n\nThe simplest method for making a "hovering" vehicle would be to take the vacuum engine, mount it onto a curved shield, with the curvature facing down. Make sure your shield is a very light material, balsa wood works, i suppose.\n\nIf you know where the vacuum's intake and output valves are, then it's easy. make sure you make a hole for the output, and secure the engine to the top of the shield. Turn on the engine, and watch the contraption float around aimlessly. It's basically how a air hockey table works, except in reverse.\n\nEDIT: one important detail. Are you trying to make a hover car strong enough to hold your weight? Because that would need one hell of an engine.
8294
I wondered about this a few years ago...found the solution online.  Very cool engineering trick.  I rememebered where I found the solution.  The cranes grow themselves.  Check out the link below...with pictures.
870325
I suggest you build an anti-gravity lifter device that is able to float in the air without anything supporting it.\n\nhttp://www.amazing1.com/grav.htm
584810
You run the fishing line through the straws.  Tape the straws together loosely with the duct tape.\n\nYou can then control finger movement by tugging on the lines.
458667
I can't, it never happened.\n\nTeams only work when one person does all of the work and everyone else watches.  So they might as well have done it on their own.  Save time and resources.
686943
You don't !!!   Don't be silly, you could really hurt yourself or others trying to make it.\n\nAnd, just why would you be wanting to make this any way ???
1020152
use an inanimate object like a tree pnce u master basic drills find somthing that movess like a dog or other
1178580
ok when your doing one make sure your feet are in the right place,put your hand(fingertips) on the ground.your feet should be in the middle and on the tale.push down on the tail while jumping your fingertips will come off the ground.while in the air the firt on the tail slides back gives the board a little nudge so it flips.then quickly slide your foot back on the tale but right on the end.make sure both feet are on.then your board will drop down and you keep your balanece.that is a tip and you can think about something like if i land these ill get 1 million dollars or somethin on the lind.i hope this helps.oh yea yuo can practice in a pool,trampiline,or bed.thats what i did when i first learn how to do one now i can do them naturally.have a nice day
71883
OK, stand on the board, and don't fall off.\n\nKick with your dominant foot to propel yourself.\n\nRemember though, don't fall off.
650836
Essentialy, you do it the same way you would from a boat. You're just comming at it from a different direction. Fish the cover; weed beds, stumps, rocks, or anything else that might hold fish.
871188
http://www.riverpast.com/en/boosters/mov/index.php\n\nUse this link and download this software. The following link will describe how to do it
226075
My friends & I like to make this move on the rollercoaster, right at the spot where the camera is. \n\nWe take a teacup glued to a saucer & a pot, one will hold the cup while the other pours tea out of the pot\n\nOr try hands of cards glued together and pretend to be playing...\n\nFun pics.\n\nIf you are asking about making a toy rollercoaster move- the only thing I can suggest is "Gravity: It's The Law!"
412146
Create a little clear area, dig a hole in the ground then fill it with sand. Make a little wood border to hold the sand in (only for the back, left, and right side though, you need the front to be open)then stick a long metal pole into the sand and ground to it can hold steady when being hit with the shoes. Have fun!
926220
Use a floating point, or gimbaled hydralic plates to adjust as needed. this is also a known Earthquake Resistant design.
1072877
Get a few people and run (yes, run the best you can in the water) around the edges together with your arms extended out on both sides. Push your self as hard as you can through the water, and when you get tired, float around the edges until you've got strength again.
610453
build a basic suspension bridge\nuse baking soda to show gasses \ntake two 1 liter bottles put them mouth to mouth cut a cap to connect them or pvc thredded tube @ hard ware store \nu can show how a hurricane moves thereb will be a" vortex " it is really cool to do \ntry this take a u shaped tube make 2 plungerlike inserts put water in it illustrate hydrodynamics dat all  good luck