A simple Rubber Band Powered Car - Cardboard, 2 pencils, 5 paperclips
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- เผยแพร่เมื่อ 14 พ.ค. 2024
- I made this car in response to a comment from Victor Ogunyankin
"I need to make a rubber band powered car that can go a good 3 meters about for a contest. It has to operated by a special type of pencil. I think I know how to make that work, but i am limited on supplies, and my first idea doesn't work. "
I am not sure what he means by the special type of pencil but I do understand what limited supplies can mean so this car is made from 1 large cardboard tray from my local supermarket, plus 2 pencils and 5 paperclips
Main Components
-
Large Cardboard tray from supermarket
5 paperclips
2 pencils
Glue for the cardboard
Main Tools
-
Scissors
Sharp knife
A hot glue gun would make this stronger but not necessary
Some helpfiles
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Who else is learning about friction and had to do this 3 weeks ago and are berly starting on the last day. Just me?
Good luck with that. You will find helpful stuff in the video description.
@@GrandadIsAnOldMan thanks allot for this I got a good grade on it
@@chris-mz9nb Hey, thanks, well done 👍
Litterally me
Me
Thank you so much for doing this sir!! I left my physics project to the last minute and this video saved my life. It was so clear and easy to follow. Appreciate it!:)
Hey, thanks for the positive feedback, that is great news to know it helped you.
My daughter's only has to go one meter! Thanks for taking the time to make this
Thank you, there are plenty more on my channel made from all sorts of materials, rubber band powered cars are a regular request.
Absolutely brilliant! Thank you, sir. You have made physics class a bit easier for me.
This video may be the reason I passed my engenieering class :)
You have made my day, thank you 😍👍
@@GrandadIsAnOldMan k
Thank you for making this on such short notice! This really helped!
Hi Victor, I was not sure what you needed so I just guessed and this was the result. It was fun making it and didn't take very long. Thank you for asking the questions.
I’m doing this project for a second time because it was so fun when I did it from my science project which I actually did during Covid at the time, but my teacher just said it was one of the best projects
That is brilliant 😁😁👍👍
Woah! Thanks man! Helped me a ton for my project!
Thank u very much
We have a science project of exactly that
:)
Wow guess I’m 5 years late :’>, but this really is a lifesaver. Now I won’t fail thanks to you UvU
If you need any help there are handy links in the video description. Thanks and good luck 👍
I needed this so bad! I'm doing a project that's extremely similar to this with a friend, and we both had no idea where to start. Hopefully this gave me enough ideas to help us win! Thanks!!
+Taylor K good luck, there are lots of useful links in the video description that may help you
I made this car in a few minutes, and it works great! Thanks for the idea!
Thanks for the feedback Dave, I think the hardest part on this car was cutting good circles for the wheels.
GrandadIsAnOldMan you're welcome!
Yes,it was very helpful ..... I am doing a paper mache carriage n wanted to have the wheels turn/roll. This is Great....Thank you.
U saved me man, I tried so many other ways to do this but it's so difficult your way is the best. 👍👍👍
Thank you. There are many more rubber band cars on my channel. You will find helpful links in my video description.
I couldn't figure out how to attach the wheels to my rubberband powered car project. This video helped!
Glad I could help! You will find useful information in the video description 👍
@@GrandadIsAnOldMan Thank you!
@@GrandadIsAnOldMan how long did it take to built btw
@@ed1tz468 that rather depends on when you start the timer. If you have the cardboard, pencils, paperclips, glue, and tools all arranged ready on the table, and you know what you are doing, you can probably do it in half an hour but I would expect it probably takes longer. If you are looking to make a rubber band powered car and you are not restricted to the same components used in this car, then I would choose a different one from my playlists. Cardboard wheels and pencil axles are not very good choices. Further information is in my video description.
@@GrandadIsAnOldMan I have no restrictions, that apply to this car
Thank u I needed this for my stem class :)
Glad I could help! You will find helpful information and links in the video description.
Thank you very much for sharing this project. My son will truly benefit from your guidance while completing a homework assignment in which he was a little confused. Cheers!!
Thank you. You will find helpful information in the video description.
Thank you for this!!! Imma make this for my project.. :D
I also need this for my science project too,but tomorrow and I’m almost finished with the 🚘👍
Good luck with your project.
Thanks a lot! Very helpful for my engineering design course :D
I remember making these for a 6th grade science project. Quite fun. :D
astrangeone Yes I think that is where most of my requests for rubber band powered cars come from. People with school projects.
Very helpful! My rubber band powered car has to go 5 meters
Thanks and good luck with that, Jake. I test all my cars in my kitchen which is 5 metres long so as long as they hit the wall at the end I can be confident they will go over 5 metres.
I have over 80 videos on the subject of rubber band power in these playlists
Rubber Band Power
th-cam.com/play/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6.html
Rubber Band Powered Car #8
th-cam.com/play/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_.html
GrandadIsAnOldMan thanks :)
Needed this for my Invention and Innovation class. My teacher's a dick and hates my guts, so thanks for this.
There is some extra information in the video description that might help 👍
Thank you so much! I did this for a science project with my mom and she was really helpful but so where are you! I hope I get a good grade on this. This was very helpful and I’d rate this 9.5/10 because it was a TEENY bit long (when we made it) (-3) and it was a a short ride on ours(-2) but otherwise BEST THING EVER!!!
Hey thanks for the feedback and congratulations on your results :-)
Kawaii_Cupcake very
Seems like we're all doing this for a school project!
+Is mY life Diaura it's a regular request every year. If you look in the video description there are some useful links. I have nearly 200 different rubber band powered cars in that playlist.
+GrandadIsAnOldMan Thank You so much!! This saved my life, I'll definitely check the other ones out!!
Thank you!
I know this is an old video, thanks for this btw gonna use in physics, but would you consider the rubber band used in this video a pulley? (as a simple machine)
Hi, thanks for watching and commenting. Regarding the pulley, I had not thought of it that way. I wouldn't think the band itself would not be a pulley but wrapping it round the axle probably makes the axle a pulley. I see Wikipedia has this definition "A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt."
GrandadIsAnOldMan Alright, thanks again for replying quickly!
Nice building skills!
Have you ever built a bogie axle vehicle? It should roll nicely over obstacles like the mars rover and lots of vehicles before it. Nice passive suspension.
Thanks, I haven't tried a bogie axle vehicle. In fact I don't know what one is. As far as I can tell from from looking at Google it would be a multi-axled vehicle with each axle individually sprung. I don't put suspension on my vehicles as they are just quick and simple so a multi-axle multi-suspension vehicle is probably not going to appear on my channel.
The nearest thing to that would be my rubber band powered train th-cam.com/video/kZcPErIt1w4/w-d-xo.html
or my 6 wheel drive rubber band powered car th-cam.com/video/bRjVzmcXPjM/w-d-xo.html
but neither have individually sprung axles.
GrandadIsAnOldMan Cheers! The way I'd describe it is that you have wheels sprung in pairs simply by giving them a common central pivot. Both wheels stay grounded, weight perfectly distributed, even when one encounters an obstacle or pothole.
I appreciate the simplicity of your builds. I may try if I can build my own, and test it for roll-over capacity against an unsprung counterpart.
That video is very helpful to me i'm in 8th grade and I have to build a newton scooter and I'm going to do the same one thanx
Good luck with that. There are plenty more designs in my Rubber Band Power playlist th-cam.com/play/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6.html
GrandadIsAnOldMan i am actually gonna do the smallest rubber band powered car thanx again :)
Tanya B good luck with that, the main problem with the small cars is getting enough grip to stop the wheels spinning.
I liked to thank you so much, this video helped me because I have a final exam except that we are making projects for our final exam which is a race between classes and who has the fastest rubber powered car. This counts for 20% of our overall mark and seeing as our teachers never taught us how to make a car, this was extremely helpful in more ways then others.
Thank you very much for your comment, it is great to know it has helped.
@@GrandadIsAnOldMan Hello 😊, I will be making this for my project but I just wanted to know if the car would still work if I replaced the pencils with wooden circular chopsticks/bamboo skewers!
I would be very grateful if you reply 🙌(i know im 9 years late haha)
When you add a comment to somebody else's comment, especially one that is 9 years old, TH-cam often does not notify me. For future reference, you would do better to make a fresh comment. However, I have found this comment in my "Held for review" folder, which is where TH-cam stores comments it suspects are spam.
The only reason I used pencils in this video was because I was asked to. I would recommend bamboo skewers. Much better than pencils as long as they are not too thin. You will find lots of information in the video description, including links to my Putarubberbandonit channel where I put all my new rubber powered projects.@@littlegobby
haha thank u very much i just thought u might not reply to my comment if it was new because then it would be all the way at the bottom! Thank you for the advice, will use skewers!@@GrandadIsAnOldMan
Thanks this will help me lots
So helpful
very nice car
Thank you
This guy is a physics project genius
Haha, thank you, no I just try things out and see what works 😊
Thank you so much you saved my grade in Science!
Hey that's great, thank you. I am glad you edited your post as it showed as your grade in Spanish first and that really confused an old man like me 😊
GrandadIsAnOldMan Yeah I put Spanish absentmindedly ha ha
😊
I was wondering if there is a certain website That I could go to that would help me explain the science behind the rubber band car (such as how and why it moves)?
Just type a question into Google and you will find some links. Try pasting this in "the science behind a rubber band car", I just did and found plenty of pages giving information.
Ik I'm late , but if I do same thing with bigger pieces do you think I could make it life size?
If you want to go life size then you need to go something like this - th-cam.com/video/DYCu4i1daPI/w-d-xo.html
Thanx dude its amazing
thank you sir this video helped me pass my science class
That's great, well done 😊👍
Does making the front wheels smaller make the car go even farther? And do you have any tips on how to go the farthest possible?
I have not found that having smaller front wheels makes any difference. Possibly it may help by making the car a little lighter because they are smaller but I haven't noticed it. Very small front wheels are more prone to obstacles like cracks in the ground or dirt. Distance usually comes down to reducing all sources of friction, that is usually making sure your axle runs freely, but also make sure the wheels don't rub against the body anywhere. If your wheels spin at the start, then you are wasting power. Either fit rubber tyres of some sort or add some weight to the back of the car. There will be a trade off between the extra weight and the extra grip, too heavy and it reduces the distance travelled, too light and the wheels spin and reduce the distance travelled, somewhere in the middle would be just right. I have 121 videos in my Rubber Band Power playlist th-cam.com/play/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6.html
There are even more in this extra playlist th-cam.com/play/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_.html
And my Helpfile playlist has help on making wheels and tyres th-cam.com/play/PLA5a2xPRSrB2v0vxMJyZ9cPweAGx1FK6e.html
Nice ideas
Thank you 😊
You are really smart I saw all your vid'
Thanks Jerry.
awesome skills
Thank you
That was a good video.
Thank you, you will always find more information in my video descriptions.
That’s good
Don't forget there is more information in the video description.
What did you grip the rubber bands to? I know you gripped it to the axle but what about the other side?
In the video at 7:58 I show that I fix a paperclip to the cardboard to connect the rubber band at that end. Is that what you mean?
GrandadIsAnOldMan
oh yes thank you!
GrandadIsAnOldMan how did you push the scooter of? When I tried it, the rubber band just stayed tied to the pencil so the scooter didn't move
Girish Bedekar I can only guess that something is too tight stopping the wheels from turning. Did you bend the paperclips round the axle and allow free play for the axle to spin 4:58. All the wheels and axles should spin freely without the rubber band connected. Have you attached the rubber band to the paperclip at the front end 7:58. It must not foul the front axle.
hi, is there a reason why did you make the wheels so large? do larger wheels yield to greater distance?
+MsMizlicious in this video I talk through the differences between small wheels and big wheels - Rubber Band Powered Cars - Looking at the MATHS th-cam.com/video/HNcA04ojF0s/w-d-xo.html
Thank u man, it makes it so easy but if I make a sturdier model, can I use balloons for nitro/boost
+TBNRRaceBoy 02 I guess that is something you will have to try for yourself
THANK YOU!
I hope it helps. If you need more information then please check the video description 👍
how where you able to make it go straight? also do you know how one could make it go 3 meters, stop, and then reverse for .5 meters?
Hi Fluvia.
1. Going straight is easy. Just take care to get your wheels straight on the axles and get the axles parallel front and back. If you take care cutting the chassis so the front and back are parallel and take care gluing the axle tubes in place then it will run straight.
2. Running 3 metres and stopping is fairly easy and I have some cars in my playlist that do that.
3. Running about 3 metres, stopping, and running backwards is fairly easy. You just attach the rubber band to the back axle so it is fixed. When the car runs forwards it unwinds the rubber band, goes past the point where the band is attached and the momentum of the car starts to wind the rubber band up again until the car slows down, stops and then unwinds in the opposite direction running the car backwards.
4. Getting it to go exactly 3 metres forward, stop, and then run exactly .5 metres backwards is a bit more challenging. I did something like it last year with this car although you would need to trim it to get the distances you want. The motor is far more powerful than you would need and you could make a smaller car, I just modified one I had already.
Rubber Band Powered Car #8 goes forwards and backwards
th-cam.com/video/bBU8UngaFfM/w-d-xo.html
a. Make a fairly long car to give you a long enough rubber band motor to work with.
b. Use a short rubber band motor about half the length of the car and attached to a string that wraps around the axle.
c. Put a short peg in the back axle.
d. Tie the string to the axle so it is fixed and cannot slip.
e. Wind the string around the axle so it can travel .5 metres
f. Turn the string round the peg then wind it round the axle in the opposite direction enough for the car to go 3 meters.
g. When you release the car it should travel 3 metres, stop, then come back .5 metres.
h. If you put rubber on the wheels it should help to stop the car sliding when it stops to come back.
There are a lot of rubber band cars in my playlists
th-cam.com/play/PLA5a2xPRSrB1otXh0w36OwsYIHZznUWp6.html
th-cam.com/play/PLA5a2xPRSrB0zJ5RHjvsw46Mio6uJjF5_.html
GrandadIsAnOldMan Thank you so much!
how do you do the 5th paperclip it was to fast for me to see? Btw awesome video
catlin ethridge it doesn't matter how you bend it, you just need a loop showing at the top so you can attach the rubber band. I opened it out to straighten it, then bent it into a U shape, pushed it into the cardboard and bent the loop up so it shows at the end. If you slow the video down using the settings option you can see this, but I understand this is a problem.
The paperclip axles or whatever won't stay in the cardboard and they keep popping out. Any advice on how to get them to stay? Thanks
Glue or tape? or maybe even bend little hooks on the ends of the paperclips.
GrandadIsAnOldMan Ok thanks i will try that.
How do you make it go even farther than that? Also it keep turning right, how do you fix that?
Further - more power
Turning - are the axles parallel - are the wheels spinning
I will paste my standard list of tips below (It may take you a while to read through it all) -
Fault Finding on a Rubber Band Powered Car
1. The rubber band does not connect to the front axle, some people misunderstand the videos and attach the rubber band to the front axle as a convenient anchor. That stops the axle turning. Make a different anchor point, study the video again.
2. Does the car run forwards freely if you just push it without the rubber band connected?
If it does not, make sure that the axles are free where they pass through the body. You may need to enlarge the holes where the axle goes through the body or use larger tubes for the axles to go through.
Are your wheels round with no flat spots. You may need to trim them.
3. Do the wheels rub against the body of the car?
If they do, the friction will slow the car or even stop it moving.
Put some spacers on the axle between the wheels and the body to keep the wheels clear. Discs or washers cut from plastic or cardboard should work.
4. Do the wheels spin evenly when you watch them?
If your axles do not pass through the centres of the wheels, the wheels will not spin evenly and this makes it harder for the car to run, so you will need to make new axle holes, taking more care finding the exact centre.
6. When you wind the rubber band round the axle do the wheels turn at the same time or are they slipping on the axle?
If the wheels are slipping on the axle, the rubber band will unwind without the wheels turning on the ground. You need to do something to stop them slipping. Glue them to the axle or wrap tape round the axle where the wheels are to hold them in place.
7. When you release the car it does not move, but if you lift it in the air, the rubber band unwinds and the wheels spin OK.
Either the ground is too rough or the car is too heavy. Try the car on a smooth surface, make the car lighter, add more rubber bands.
7. Wheel spin. When you release the car, do the wheels spin without the car moving forward?
You do not have enough grip on your wheels. Either add some weight to the car to help the grip or put something on the wheels to improve the grip.
Things that will improve grip - hot glue all the way around the rim like a tyre. Rubber bands stretched across the wheel. A strip of rubber cut from a balloon stretched around the edge of the wheel. Strip of rubber cut from washing up gloves or disposable rubber gloves.
8. Trouble connecting the rubber band to the back axle? Glue a short stick to the axle to act as a hook for connecting the rubber band.
We are trying to construct a rubber powered car that can go as "far" as possible. It doesn't have to be fast. It just has to travel as far as possible and as "straight" as possible. Can you please recommend me a design? Or at least give me a general idea of what critical points I should be aware of while designing my car?
This is a fairly regular question.
I am assuming you have some set criteria for number of rubber bands and size of vehicle so putting those aside. The first point about travelling fast or a long distance is minimising your friction because that is what wastes your power.
1. Friction caused by badly aligned wheels rubbing on the bodywork should be easy to fix by adding spacers to keep the wheels clear.
2. Friction where the axle is attached to the bodywork is reduced by making sure the axle bearing surfaces are something that does not bind together. Wood and cardboard are not good. Metal surfaces are better. Steel and brass is good. Ball race bearings would be even better. Whatever you have, even if it is just wood and cardboard, you can improve by making sure there is clearance so they do not jam together and maybe rub some graphite from a pencil where they make contact might help.
3. Friction with the wheels to the ground can be a mixed blessing. Minimise the friction of the front wheels by using very thin wheels, however you may need some grip to ensure they keep the car going straight. The same applies to the back wheels, assuming you are using the back wheels as the drive wheels. However if they do not have enough grip they will spin under power and that is all wasted energy. Thin wheels with rubber tyres would be best in that case.
Larger wheels take more effort to get them turning but once moving they have the momentum to keep rolling when the rubber bands have finished. You could experiment with different sizes to see which work best.
You could use some sort of gearing to start with a large gear to get the wheel moving and then a smaller gear to maintain the motion. There are some examples in my playlists.
Reducing unnecessary weight by trimming the bodywork a little may help but make sure you don't loose grip and start the wheels spinning if the body is too light. It may bend or break under tension so be careful.
Another trick I have found helps is to stretch the rubber band as you wind it round the axle so you get more turns round the axle, this can make a significant difference compared to just winding the band normally.
If you can only use a short rubber band, connect it to the axle using thin string so the string winds round the axle stretching the rubber band. Thin string will give you more turns round the axle than thick string.
This simple one does 12 metres th-cam.com/video/pIO3FiHX4Oc/w-d-xo.html with just 1 size 64 rubber band.
There are several reasons the car might turn to the right - or left - here are some I can think of.
1. Your front axle is not parallel to your back axle so the car has an inbuilt turn. A quick check would be simply to push the car forwards without the bands connected and see if it turns.
2. When you tension the rubber band the body or the axle is flexing creating a turn. Try winding the band to one side of the axle. Looking from the back if you wind it on the right it pulls the right side of the axle forward turning the car right. If you wind it on the left it pulls the left side of the axle forward and the car goes left. th-cam.com/video/IErkUylbG9c/w-d-xo.html
3. Probably most likely, the wheels are spinning under power allowing the back of the car to slide to one side. Fix this by adding extra grip to the wheels such as a strip cut from a balloon or rubber gloves stretched around the rim of the wheel to provide a rubber tyre. Here is a link that shows this th-cam.com/video/ZnuPnveCbxs/w-d-xo.html
4. The front wheels are sliding sideways under power, fix this the same as '3' above.
5. One or more of your wheels are binding on the side of the car causing it to turn.
6. One or more of your wheels are not round and the unevenness is causing the car to skip and turn.
7. Your wheels are not the same size so the car turns towards the smallest wheel.
8. Your axles are not level with the ground and the car is running on only 2 or 3 wheels. This may be the body flexing and not show until the rubber bands are wound up and under tension.
The two most important factors for acceleration and speed over a short distance are the power of your motor and the grip of your wheels. If you don't have the power then your car will not move fast but if your wheels don't grip then any extra power will just spin the wheels and the car won't move. If you have a fixed amount of power by being limited to the number and size of bands you can use then you can increase your acceleration by enlarging your back axle. I wrap stuff around the axle to make it thicker. That will increase the acceleration but probably reduce the total distance your car will travel. If you are only going a short distance that probably won't matter. You can also use smaller wheels to increase acceleration but you will find it even harder to get good grip with smaller wheels.
Some helpfiles
Making the CD wheels th-cam.com/video/ZRrjBuWfmrM/w-d-xo.html
CD Wheels with Cardboard Hubs th-cam.com/video/Js1rtn2IGTE/w-d-xo.html
Putting rubber tyres on CDs th-cam.com/video/ZnuPnveCbxs/w-d-xo.html
Connecting rubber bands th-cam.com/video/EbYuhdwknbs/w-d-xo.html
Connecting the band to the axle th-cam.com/video/0wPYxloUFJQ/w-d-xo.html
@@GrandadIsAnOldMan Thank you so much!
@@kothaihari7936 I hope that information helps 😊👍
Hi! I love your simple car designs. I am a elementary school teacher and would like to start a project with my students to create simple cars (either using a rubber band, balloon, or possibly a small motor to make them go). I would love to know what are the most important design elements my students should learn and think about when making a car. Any help would be much appreciated! I don't have much experience with this sort of thing, but it is something my students are very interested in. Thanks!
Gosh, there are some many things you can learn when making these cars it is difficult to think where to start. Right at the start there is the issue of safe use of tools and which tools are the right tools for the job. Next I would think about which materials are being used and why (weight, rigidity, flexibility, durability). Then we get into physics and laws of motion, power to weight ratios, leverage, gearing, friction. I guess there are even human relationships, sharing, team work, competitive practices. I had better stop there because my mind is now drifting, what was the question :-) Oh yes, important design elements. Keep it simple, understand what the task is, do the minimum to achieve the task. I think my simplest cars (Cardboard rectangle, drinking straws, barbecue skewers, CDs and bottle tops) are as good as any of my more complicated builds, easier to make and easily adapted. Hope that helps.
Veryhelpful
Thank you, you will find more information in the video description 😁
good car
Thank you 😊
mosttt helpppfulll forrr meee...
+rimsha sattar I guess this one wasn't so boring for you then.
Helped a lot got an a on my project thank you
Thanks for the positive feedback, I am glad to hear it helped :-)
So awsome
Thanks Donny.
hi grandadisanoldman
can I use loom bands instead of whatever u used???
thank you
Yes you can, loom bands are just small rubber bands. I have used them on several of my cars. You just need to double them up if you need more power, or make several strands. Here is a simple one th-cam.com/video/fjpZ6hYZc-4/w-d-xo.html
ok thank you
That is awesome
Thank you Tatiana.
Very helpful thank you
Thank you.
thanks this will help on my project in school THX
Good luck with your project. There are some helpful links in my video description 😊
Very easy good
Thank you. You will find useful information and links in the video description.
I followed the directions exactly but the rubber band gets stuck so it won't move what should I do?
Great...hope it helps us with the my sons project
Good luck, you will find useful information in the video description.
Thanks i will read it
Hi! Do you have a few measurements for this car?
No I didn't use any measurements, but I would guess it was 4 or 5 inches wide as it needs to be narrower than the pencils I used for axles. I made it as long as the pieces of cardboard I had available. Looking at the video and comparing the length to the width I would guess that was at least 12 inches long, maybe a bit more. There are several useful links in the video description to help you. I have hundreds of rubber band car designs.
@@GrandadIsAnOldMan
Thank you so much!
That is awesome😱ahhhhhhhh🤐☠️i am dead
Your awesome
Thank you.
How did you do the connector?
Connector? The rubber band is attached to the chassis at the front using a paperclip 07:58 and the rubber band is just wrapped around the pencil axle so it wraps over itself to hold it in position 08:45
Nice
Thank you
Thank you so much!
There is helpful information in the video description, if you need it 😁👍
I have to make a car for my science class but it has to go exactly 15 meters or really close and it has to be fast what advice can you give me ?
Nanci Melgoza there are several videos on TH-cam with braking mechanisms that will stop the car at a certain distance. All of these videos are my simple version that just uses a length of string winding up round the axle to measure the distance. It is not very accurate when you cover longer distances.th-cam.com/video/vc0URTIqdSA/w-d-xo.html
th-cam.com/video/b3R35C49MSI/w-d-xo.html
th-cam.com/video/ahbQF5AyF9Y/w-d-xo.html
th-cam.com/video/-ACctRhxhDQ/w-d-xo.html
th-cam.com/video/yIZo0ksZc1M/w-d-xo.html
This is my playlist that includes other people's brake mechanisms
th-cam.com/play/PLA5a2xPRSrB3MyidvKMT3DqU1vNy9Atsf.html
thanx ill make sure to watch them(:
What kind of energy does this car use. Cause i need to know for my stem class
When you wind up the car's axle you stretch the rubber band and store potential energy. When you release it the rubber band starts to unwind, and the potential energy is converted to kinetic energy as the car is propelled forward.
@@GrandadIsAnOldMan ok thank you very much
Is the glue called uhu?
Use whatever glue you like. At the time I made this video I was worried about pointless copyright strikes so I obscured the name. On TH-cam if you use a copyright item the copyright owner can claim your video for their own benefit, so they get any revenue generated on your video or they can simply ask TH-cam to delete your video and maybe even your channel. In most cases copyright owners do not do this as they are happy to get the extra publicity but that is what the TH-cam rules are. Obviously this will have no effect on your channel at the moment but if you grow it then you might want to consider copyright issues.
Hey ms. Couch Murphy if your reading this hi one of your students here
What is an advisable dimension for the base if the car??
Keep it simple. The width needs to be less than the length of your pencils or you won't be able to fit the wheels. The length depends on what cardboard you have available. The longer it is, the more rubber bands you can use, so it will go further. A longer car is easier to keep in a straight line. I would think 12 inches or 30 cm is a good length and as I said, the width would depend on your pencils. In response to a recent request I made a new version of this using tape to hold the paperclips in place th-cam.com/video/QKgfNWTa0e8/w-d-xo.html
How Would I make it with a DVD instead of cardboard wheels because it would be very loose?
If you want to use CDs for wheels the option I use is to fit plastic bottle tops as the hubs, see this helpfile Helpfile - How to use Bottle Tops for CD Hubs
GrandadIsAnOldMan Thanks!!! It really helped.
Matthew Yee that is good news, I am glad it helped.
Cool
Thank you Jackie.
Hey I have a problem I winded up my car but it won't go what should I do?
How long is the chasis?
As long as you want. The longer it is, the more rubber bands you could use to power it and longer chassis tend to go straighter. If it is too short, then the back wheels might rub against the front wheels.
I'm using cd's as wheels and it doesn't even launch. The wheels keep wobbling onto the floor and the pencil is loose. I don't know what to do.
+Neon Snow I don't know how you have attached the CDs to the pencils so I cannot guess what your problem is however if you look in my video description there are some links to help files on using CD wheels.
Wow this is why I passed my 7th grade test
Hey that is great news 👍👍👍
cool im going to make this car for my science fair project..... but first am i allowed to copy it off of you?
how many rubber bands?
As many as you like. Rubber bands come in different sizes. You want the length of the rubber bands to be slightly less than the distance from the front of the car to the back axle, That is to ensure it comes off the axle when it has unwound. If it stays connected, it will start winding up the wrong way round and stop the car rolling. If you are limited to one, you can extend it using string.
i like all of your videos
Thank you, goldy.
welcome
can you make a musical guitar ? please
goldy vijay I will have to think about that. I see a couple of issues. I think it would take longer to make a good one than I really want to spend on my projects. I have no musical skills so even if I made one I would not be able to play it to demonstrate it. Maybe a very simple one with a cardboard box and some rubber bands.
goldy vijay I did my best for you, hope you like it. If you look through the comments, somebody else has left a link to one that they made which looks really good. th-cam.com/video/yfjs-GLkZMU/w-d-xo.html
thank you GrandadIsAnOldMan
very helpful hope i get good grades
Good luck
I'd find the center by drawing a radius (twice) from the outside for half the diameter. They'll cross in the center.
Yes that will work if you have a compass to draw the radius. Folding the paper like I show needs no special tools, just a pencil and scissors.
i have to do the project tonight because my other one failed just now! can i use any pencil????
You can use any stick that is long enough and strong enough. I only used pencils because I was asked to.
how many rubber bands did you use
+Zainab Jackson I don't know, does it matter? At 09:00 I think I can count 8 of them. It depends what size you have available. If you can only use one you can use a piece of string to get to the back axle. Here is a good example th-cam.com/video/pIO3FiHX4Oc/w-d-xo.html
Hi Grandad,
Me and my boys (8) and (6) just love your shows. We've made rubberband, fan and motor powered cars based on your videos.
My six year old, Aiden, wants to put a hammer-like contraption on the top of one of his cars. He built a hammer-like thing (about 4 inches long) and we attached it to the body of a little lego guy (sans the head) and attached the lego guy's butt to the top of the car so that the lego guy acts as a hinge and the hammer can move up and down. Aiden said, "let's ask Granddad how to make this move!" He wants to motorize this up and down action, and I have no idea how to help him.
The body of the car is a Pringles can, so it's cylindrical, with a diameter of maybe 3-4 inches. The tires are nice big tires that we pulled out of a building kit.
Hope this makes some sense. Looking forward to your thoughts.
Ichiko
I would suggest a cam on the back axle that hits a rod that is attached to the hammer. If I have time I will have a look but I am rather busy this week-end so it may be a while before I get to it. Another option would be something like I did in this project th-cam.com/video/FBlrb1Xeh2g/w-d-xo.html
GrandadIsAnOldMan .I guess that the hammer would have to be on a free swinging hinge so that if something hit it, it would go up in the air and come back down again. The lego man hinge stays in whatever position you left it in, so I'm not sure that would work for us, but Aiden is looking forward to seeing anything you might come up with. Thanks!
Sorry for the late response but AWESOME hammer action. My son loved it and we all got such a kick out of it.
By the way, if you get the chance, can you explain what the big black blob on some circuits are. I think you actually refer to them as "black blobs".
Thank you!
The black blob is the circuit board containing all the circuitry that has been designed for a specific purpose for whatever the toy or component does. It is the same as a chip. I have no idea how they are made although I would guess it is a similar process to making a chip but somehow sealed directly onto the board with a few larger components added to the board that could not be miniaturized in the same way.
Ichiko Sudo
Will this car make it over a small lump if i glue 2 of those wheels together and fashion a tissue box on top? +GrandadIsAnOldMan
What is the diameter of your cardboard wheels?
I just grabbed a handy sized bowl and drew round it. I prefer to use CDs which are just under 5 inches diameter (120mm). I think that bowl I used was about 6 inches in diameter (150mm). The smaller your wheels, the more likely they are to wheelspin, which you don't want. If the wheels are too large, your rubber band may not be powerful enough to get them moving.
Dear Grandad:
I just bought a Model car that has the wind up already. It's the little plastic gears. Can you show us how to take the "motor" apart and maybe even make it go faster? Thanks!
From: Poet
Hi Poet Wells, I do have some videos showing the insides of "clockwork" type motors but as for making them go faster, there isn't a simple fix. You would have to change the gearing or even replace the spring and neither option is very practical. You might just have to look at reducing the weight of the car to allow it to go faster by removing parts that are not needed. Maybe change the size of the wheels. Smaller wheels will allow it to accelerate faster. Larger wheels will give it a higher top speed but it will be slower starting. Here are a couple of related playlists Clockwork playlist th-cam.com/play/PLA5a2xPRSrB1D-93lQxyjysBGrhqkQn52.html
Pull-Back toys th-cam.com/play/PLA5a2xPRSrB2KoevWC9Nu0xYmBHyZw50O.html
Disassembly/Tear down playlist th-cam.com/play/PLA5a2xPRSrB1GrgALJEle2lVqOrR1sX6V.html
Thanks for your advice grandpa!
Why the is the lem sensor
Shaima Sakhi asks "Ow big is the car? And how much does it weight"
The answer can be judged by watching the video. It is less than the weight of the cardboard box I started with and it will be different for you depending on what cardboard you can use. The width is "one pencil" because I use pencils for axles. The length is less than the length of the cardboard box you start with, mine looks about 2+1/2 pencils long. The wheels are the size of the cereal bowl I used to make the circles, so they will be whatever size your cereal bowl is, or whatever circle you choose to use.
I hope that helps as I do not know what materials you will use to make your car.
GrandadIsAnOldMan I'm doing this for a school project so... can I use XD disks as wheels and bottle caps as wheels? Would that be accurate with the base?
Aamna Aftab sorry I don't know what an XD disk is. If you mean CD and bottle caps, then yes that is always my first choice but this particular build was made from cardboard because I often get asked to use something other than CDs. I have hundreds of videos of rubber band powered cars and most of them use CDs. This is probably a good one to look at th-cam.com/video/pIO3FiHX4Oc/w-d-xo.html
@GrandadIsAnOldMan I subscribed
Can I use jar lids as reals and dowels as the pencil
wheels *
+Tomm Bomb if you look in the video description there are links to my other rubber band powered cars, there are hundreds of different ones to try. The only reason I am using cardboard wheels and pencils in this project is because that is what I was asked to do. Jar lids would work OK. If they are smaller diameter then you may have problems with the wheels spinning due to lack of grip. Dowel should be fine for the axles. In the video description there is a link giving advice on putting rubber tyres on wheels to improve grip.
Thx. I got an A on the car.
Tomm Bomb hey that's brilliant, well done and thanks for letting me know.
It should be intresting
tell me the way to make a CD ROM and dvd withe card board