Shoe Box Rubber Band Powered Car for Ummustafa Javed 

Hey, wow, thanks for dropping by. Yes, still making videos of random subjects. I have a separate channel for my rubber band powered projects now. Put a rubber band on it ru-vid.com

Good luck :)

+GrandadIsAnOldMan Thank you!!

Good luck, you will find useful stuff in the video description

Do you have a second RU-vid account in the name of "ummustafa javed"?

GrandadIsAnOldMan yes

You can use whatever size you like. I like to use CDs because they are convenient (and round). You can cut wheels from wood or cardboard, or you can use the lids from cans, or anything else that is a circle. The smaller the wheels you use, the more likely they are to lose grip and spin, so your car does not move forwards. You can fix that by adding some weight to hold the car down.

@@GrandadIsAnOldMan thank you for the tips you just got yourself one extra subscriber :)

@@puravida.57 thanks, you will find useful information in the video description.

+Orion121802 yes, I either give people a link to the one I have already done or I make it different with different components so it is not quite the same.

+Isabella Bella as long as they are big enough to cover the hole in the middle of the CD any size bottle tops will do the job. They are just there so you can get your axle through the middle. If you just use one top per wheel the wheel will tip over. You need a top on each side to support the wheel but they don't need to match each other. The middle of the top is in the same place regardless of how big the top is.

+Dominion Oni I am glad it helped, thank you. There are useful links in the video description.

+NØVA to go up an incline you need a powerful rubber band and good grip on your wheels. Smaller wheels will help because they take less power to turn but you may have trouble with maintaining grip. Here are some of my cars going up ramps ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Cwz2rR0asus.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-VHs9L0-J_Rw.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-A9V_KBib9ME.html

Just turn the car around and wind it up in the opposite direction. Then the back is the front. However you are more likely to get wheel spin with front wheel drive, just like real cars.

GrandadIsAnOldMan thanks

Try it and find out. The distance and speed of your car will be governed by the amount of friction on the axle where it goes through the sides of the box. Make sure the holes are plenty big enough so the axle can spin freely. There are links in the video description to my playlists full of rubber band cars and here is one example Rubber Band Powered Car 1 x size 64 - full length video ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pIO3FiHX4Oc.html

+to speed the Khadka Haha, surely it would have been quicker just to try that rather than type me a message. YES you should be able to increase the number of rubber bands to increase the power. I didn't specify what rubber bands should be used so you can use whatever size bands you want. You can either add extra bands side by side or just use thicker rubber bands. HOWEVER the reason it may be going slow could be that you are getting too much friction round the axles. Maybe make the axle holes larger to ensure the axles run freely. Make sure the wheels are not rubbing against the side of the car, there should be a small gap between the wheels and the car to stop that happening.

You could roll some thin card round a skewer to make a thin tube and then use it to join two skewers together. If you make it several layers thick it should be strong enough to hold them rigid. Coat the card with glue as you roll it up to make it strong.

@@GrandadIsAnOldMan ok thx you the only problem I have is when I rolled up the rubber band on the bbq skewer on the car car it doesnt move i tested it on carpet could that be the problem?

@@shethe_ewoqueen122 Do the wheels spin but the car not move? If the wheels are spinning you may need to add some weight at the back to help them grip. For other issues I will paste my LONG list of tips here ---- 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 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-pIO3FiHX4Oc.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. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-IErkUylbG9c.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 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ZnuPnveCbxs.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.

@@GrandadIsAnOldMan ok so when i release the rubber bands it may move a little but i push it and it goes a little fast and it stops and moves and stops.

@@shethe_ewoqueen122 check through my previous reply. It is very long and covers most issues with rubber band cars

It sounds to me like you have been asked to make a gravity powered car so here is my Gravity Powered Cars playlist ru-vid.com/group/PLA5a2xPRSrB1zzCqDckAnlOzz8iViuM94

Thank you Sr for your response, is great that you share your knowledge!

בישוע מסיאס 😊

+ Coraille no, not r/c, there is not enough power to last long enough. Check out the work by norris432 ru-vid.com

GrandadIsAnOldMan merci de m'avoir donner la lien de cette chaine je la trouve trop cool

This playlist includes my cars that carry things - Carrying Dropping Pushing Pulling Stopping playlist ru-vid.com/group/PLA5a2xPRSrB04L6RpUAs5akmK3jqmahPL

+TreePuncher915 Where all the wheels are powered.

+TreePuncher915 just connect another rubber band to the opposite end of the car and wrap it round the front axle. Hers is one I did last year ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-bRjVzmcXPjM.html

That information is provided in the video description

Thank you 😊

+Dakota Ticer this search will bring up some of my rubber band powered boats ru-vid.com?search_query=grandadisanoldman+rubber+band+powered+boat

+ Coraille not a yoghurt pot, a plastic soda bottle, ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-eSGfoOQ6rQc.html

This playlist has my cars that do that sort of thing - Carrying Dropping Pushing Pulling Stopping playlist ru-vid.com/group/PLA5a2xPRSrB04L6RpUAs5akmK3jqmahPL

@@GrandadIsAnOldMan but these videos did not have a pulley one

@@arsalanasif5105 you didn't ask for a pulley one. What do you want the pulley to do?

To pick up an object

@@arsalanasif5105 there are 3 cars on that list that pick up objects and don't need a pulley.

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-g2dtXHVEOYs.html

You mean stick a cardboard cut-out of a Nyan Cat inside it?