O.M.G how in the world can i built a car small car the moves on its own?
822324
well, i cant really explain it, but you can use rubber band or a mousetrap to power the car. if u google "mousetrap car" or "rubber band powered car," you'll find diagrams and steps on how to make it.
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.
953835
A unit that small you would have to have custom built, or build it yourself.
159509
Start with a toy car sitting on a table.  Point out that the car is not moving. Point out that no unbalanced external forces act on the car, hence it remains at rest, i.e. doesn't accelerate.  This demonstrates Newton's First law.  You can also demonstrate the other part of Newton's First Law, about objects in motion staying in motion unless acted upon by an outside force, by pushing the car and catching it a short distance later, before the force of friction had much opportunity to act on it.  Or you could use a marble, which is less affected by friction.\n\nFor Newton's Second law, use two cars, one more massive than the other.  You can arrange a weight and pulley sytem to pull the cars along if you want, or you could just tell your audience about the forces you are using as you push the cars.  Push 1 car lightly and see how fast it goes.  Then push it harder and see if it goes faster.  Next, push a more massive car and a less massive car with the same force, and see which ends up going faster.  The cars that went faster were accelerated more as they were pushed.  Thus, you "showed" that the acceleration of an object is directly related to the force accelerating it, and inversely related to the mass of the object.  This yields Force is proportional to mass x acceleration, (Newton's Second Law)\n\nFor the Third Law, have your audience imagine what it feels like to push the car.  It is impossible to push on something without it pushing back on you.  And the amount of the push-back is equal to the amount you push.  If they slam their hand against the car very hard, they will feel more force applied to their hand than if they gently push it.  And of course the push-back is in the opposite direction of the push.  If they push against the car to the right, the car pushes back to the left.  Hence, for every action, i.e. applied force,  there is an equal and opposite reaction force.
478196
Well, detailing the entire process here would probably be too in-depth.  May I suggest that you visit a local hobby store and ask a salesperson about a remote control car/boat kit?  This is probably the best way to learn and understand the principles first hand.   If you want, there are even kits where you can build your own transmitter and receiver.
417634
Connect the toy car to the mousetrap and let a mouse loose. it will move by itself.
878919
http://rampplans.org/rpdo_mini2.html\nyou couldve just google it  but there ya go. enjoy and remember to invite me over to test it out.
260609
Yeah...  What Marky said.\nThen add a performance chip, fuel injectors (if necessary), larger throttle body, and mass air flow sensor (if applicable). Intake manifold....\nThen put a huge Turbonectics Turbocharger on it!\nTo go faster, you need to get more air and fuel in, and more exhaust out.\nHave fun!!
151439
dependign on the type of car it differs as far as position goes, but the basic concept is always the same.  use a flat ruler or similar object preferrbaly made of metal being ideally about '15 or longer and having a hook like groove cut in one end.  slide this tool into the door of the car where the window meets the actual door part, you should be able to reach around and find a bar or rod that connects the inside door handle to the loch mechanism that holds the door closed,  depending on the type of car you will either have to pusgh down on it with you're metal tool, or pull up on it with the groove/hook you cut in the tool.  it take some patience and practice.  Car junkyards are a good place to practice because usually you can find cars with the inner door trim removed.  You can then see exactly what to do.  It will help you visualize it if you ever need to do so on you're own vehicle.  Also not more expensive or safety oriented cars have plates, screens or wires blocking you from doing this technique, although bothersome usually they can be bypassed by bending the tool around the obstacle.  There's an even easier(and often faster) way, take off yoru jacket, shirt or whatever item of clothing you have present at the time, roll it around your fist and then take a big swing at the window that looks easiest to fix and there you go.  Now don't use this knowledge for evil.
130243
go to freeonlinegames.com they have a game where you could customize ur own car and make it high or low its in racing here it is:\n\nhttp://drag-racer-v3.freeonlinegames.com/
452430
get like a lever, those moving stuff that you can place stuff on then just roll it. Or get more than 1 person
588743
You can make a really tiny helicopter.
661466
turbosquid.com,simplymax.com\nbut why not try to make it your self car creation is quite easy try highend3d.com(free) for tutorial or lynda.com($)
217837
Car..auto...how more self explanatory can you get?
6436
Practice, prefereably with non brakable objects to represent other cars - cardboard boxes and traffic cones.\nI found it helped to visualise the car from outside but some people think i'm crazy.
555975
I don't think you are going to get plans for free. It is a very complex project, made up of a series of difficult tasks. As a kid, I hung around with Bob, who was a skilled mechanic building his own dune buggy. He often said, "Boy, I wish this was my second one."\n\nThis is the most popular book around: http://www.bugsandbuggies.com/htbb.htm\n\nBut if you are really on a budget you may be able to go to a book shop and find this magazine: http://www.kit-cars.com/Kitcarhtml/kitcarsite.html\n\nHappy day dreaming!
784055
The way to do this is to first work out the acceleration required to turn the car round the curve.\nFrom there it is a simple matter of working out what angle the road needs to be at so that gravity will provide that acceleration.