| Author | Message | ||
     Vi Tran Unregistered guest |
I have this science project where i need to propel a car, without using batteries. And i need it to be as fast as possible. Would using a CO2 cartrige or reaction hydrogen peroxide with silver be the best idea. What other ideas would work well? | ||
| Simon Quellen Field (sfield) New member Username: sfield Post Number: 126 Registered: 12-2004 |
Since you are unlikely to be able to obtain hydrogen peroxide at any higher strength than about 3% (rocket fuel hydrogen peroxide is more like 100%), I think the carbon dioxide will be a better thing to work with. But compressed air, springs, or rubber bands are also possible, as is a gas engine from a hobby store, or a toy rocket motor. Even a toy water rocket would be fun. Google for "two liter water rocket" and see what you can do with a 2 liter soda bottle. | ||
| Vi Tran Unregistered guest |
Well wat if i can get my hands on some more concetrated hydrogen peroxide, like from my school lab. Would it work, it's not 100% but my teacher says it's greater than the ones u get from the drugs store. I need this thing to go like 6.5 meters and as fast a possible, so i dunt think the elastics are that great. Springs? well i dunno. When u said the toy rocket motor, is it powered by air or water. Maybe air like those airhog toys? And working with water might be a bit to messy. Is there's like a simple yet ingenius idea? Thanks for all your help so far... | ||
| vocasla Unregistered guest |
I heard this idea of having a bottle, filling half of it with water, pump it with air, and seal it. When unsealed, it will release a jet of compressed water-air mixture, that should provide alot of propulsion. You can get bottles from water bottles in shops, and fill half of it with water (when you drink the contents first!). Then i would get a pump, and use it to pump air inside. I don't know how i would seal it, i assume you quickly remove the pump and immediately put back the lid from the bottle  if this does not work, maybe just leave the pump on! then attach that to your cool super toy car model, and watch yourself win at the race :p good luck! | ||
| Vi Tran Unregistered guest |
I dunno the whole water thing. It might get pretty messy. I was thinking of a CO2 engine. Like the one they use in airhogs. I researched the plans and ideas, but i think it might be difficult to construct from just ordinary house hold items. Is there any easy way? | ||
| Simon Quellen Field (sfield) New member Username: sfield Post Number: 137 Registered: 12-2004 |
You could disassemble an airhog... | ||
| Vi Tran Unregistered guest |
It cost too much. It cost around $40. And i think building it would be too difficult. Is there any way to use elastics and springs effectively and efficiently? | ||
| Simon Quellen Field (sfield) New member Username: sfield Post Number: 145 Registered: 12-2004 |
Rubber band powered airplanes are effective. As are slingshots. You might also do well to look up "mousetrap powered car" on Google. | ||
| Anonymous Posted From: 212.159.102.233 |
1-Get a metal tube and cover both ends. 2-Drill a small hole in one end. 3-Fill just below half of the pipe with water. 4-Put it horizontally on what you want to propell (strap down tightly) 5-Plug the hole with some wax and light a fire under the tube. 6-Wait and observe the power of steam. | ||
| uhh Unregistered guest Posted From: 24.141.92.0 |
umm ur a hooker...is that a good idea for ur project? hmm? be a hooker.. | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 694 Registered: 12-2004 |
I'm sure she means auto parts, or rugby, maybe furniture. Maybe she's talking about fishing, or music or someplace in Oklahoma. Hopefully she doesn't mean this. | ||
| greg koz (Greg1118) Advanced Member Username: Greg1118 Post Number: 87 Registered: 10-2006 |
http://users.bigpond.net.au/mechtoys/index.html This website has the mous trap powered car and lots of fun, easy to do projects you can do at home! | ||
| hello (Unregistered Guest) Unregistered guest Posted From: 65.27.195.196 |
i have to do a science project with a car where the car has to go 5-8 meters with out a push or pull to start the car. what are some ideas other than using a rubberband or balloon? | ||
| Simon Quellen Field (Sfield) Senior Member Username: Sfield Post Number: 1633 Registered: 12-2004 |
Explosives might be fun. Google for "mousetrap car". You could use an electric motor and a battery. Dropping the car from an 8 meter building should work. Using a commercial model rocket engine would be fun (find them at a hobby store). Put a big bucket of water on it and let the water pour over a water wheel. Launch it from a trebuchet (Google that word). Mount a slingshot on the car, and shoot a heavy rock backwards. Mount a 2 liter bottle of Diet Coke on it and drop in a Mentos tablet, and direct the stream of Coke backwards. Mount a carbon dioxide fire extinguisher on it, and direct the blast backwards. I'm sure the rest of our readers will have fun making more suggestions... | ||
| beverly (Unregistered Guest) Unregistered guest Posted From: 202.172.41.173 |
Yo! we have a school project that involves propelling a toy car with carbon dioxide. we intend to combine the use of baking soda and vinegar to produce a reaction that could propel a car. Do u have any ideas how we could do this? | ||
| wirenut (Unregistered Guest) Unregistered guest Posted From: 69.6.185.167 |
when I was in 7th grade shop, we carved dragsters of our own design with a receptical on the rear of the car to hold a co2 cartridge out of wood. we had to come up with two axels with wheels from broken toys etc... On the bottom we drove two narrow long staples on either end, leaving 1/8" protruding the body of the car for a guide string to go through. Once complete, we took them out to the sidewalk by the school where the shop teacher had a wide push broom with two lengths of heavy fishing line tied 1.5 feet apart to the broom. on the starting end he had a 2x4 with the other ends of the fishing line tied paralell to each otherto the board and two nails driven through just above the strings, and a specific distance above the sidewalk,( which was our only design criteria, the height of enging from the ground). we took two competing cars , threaded the lines through and tied them back to the starting block. one person stands at the finishholding the broom , bristles facing the start line to cushon the car to a stop. the teacher pulled the lines tight, put one foot heavily on the 2x4, and with the cars backed up to the nails and new co2 cartridges at the point of each nail. He then drew back a small shop hammer, and whacked the board good and hard, puncturing the cartridges and sending them down the line so fast Im pretty sure that a winner wasnt determined from any of the races, and this distance was at least a block and a half as this was next to the football field, really fun and hands on and cool ... excuse Me KEWL, to watch and take part in. and since this post is a few years late for you school project, maybe it sounds cool enough to do just fur S & gigs | ||
| i love my mama (Unregistered Guest) Unregistered guest Posted From: 220.255.7.217 |
I have a project that requires me to propel a car only using recycled materials and it has to be as fast as possible. What can i use to allow the toy car to have a good propulsion. | ||
| Theresa Simmons (Theresa) Senior Member Username: Theresa Post Number: 126 Registered: 1-2008 |
Put a soda bottle water rocket on wheels. "http://www.instructables.com/id/Soda-Bottle-Water-Rocket/" "http://home.people.net.au/~aircommand/construction.htm" "http://en.wikipedia.org/wiki/Water_rocket" "http://www.google.com/search?q=soda+bottle+water+rocket" You may want to tilt the bottle to keep the nozzle low, so most of the water comes out before the air. | ||
| DJ (Unregistered Guest) Unregistered guest Posted From: 220.255.7.228 |
Hey Simon can u elaborate on the bucket and water wheel thing? And is the mentos and coke thing considered compressed air? I dun want to use rubber bands and springs, the seniors' cars all use the same propulsion methods. I was thinking about water wheel but i dun think it will go very fast. | ||
| yoyo (Unregistered Guest) Unregistered guest Posted From: 76.95.141.217 |
http://users.bigpond.net.au/mechtoys/index.html is offline now. cant seem to get on it |
