I need to make a rubber band powered cardboard card, with wheels and axles of any material, that can drag a 1N (about 100 grams) weight behind it on a flat sled at least 5 cm behind the car. The car can have up to 500 grams weighting it on the body of the car . Any tips for making sure the car can pull all the weight?
The main issue will be getting enough grip from your wheels, so you will probably need rubber tyres. Next point will be gearing. You don't necessarily need a gearbox, although that would help you get more power to the back wheels. Instead of a gearbox, you can use relatively small wheels and a relatively large axle to wind your rubber motor round. The bigger the diameter of the axle, the "lower" the gear you are in, so the heavier the object you can pull. I did this video on the maths back in 2015 th-cam.com/video/HNcA04ojF0s/w-d-xo.html
Tysm!!
great video grandad.
Thanks, Marc 👍👍
I need to make a rubber band powered cardboard card, with wheels and axles of any material, that can drag a 1N (about 100 grams) weight behind it on a flat sled at least 5 cm behind the car. The car can have up to 500 grams weighting it on the body of the car . Any tips for making sure the car can pull all the weight?
The main issue will be getting enough grip from your wheels, so you will probably need rubber tyres. Next point will be gearing. You don't necessarily need a gearbox, although that would help you get more power to the back wheels. Instead of a gearbox, you can use relatively small wheels and a relatively large axle to wind your rubber motor round. The bigger the diameter of the axle, the "lower" the gear you are in, so the heavier the object you can pull.
I did this video on the maths back in 2015 th-cam.com/video/HNcA04ojF0s/w-d-xo.html