Jastin Telles wrote “I was wondering, with your electric car, could you modify it to where it could drop a heavy load (such as a koosh ball) around 20 – 25 feet from it’s starting point? My teacher gave my class this challenge as a project and so far we managed to get up to 10 – 15 feet using a design very similar to your electric toothbrush car. With that, we have string that activates a mousetrap with the ball attached to it which unloads the ball at our target area (at 25 feet).”
My car Jastin refers to no longer exists so I modified one I made yesterday. I am not certain that I understood the project description but I have done what I thought was right.
I attached the electric motor to the underside of the car, that was a bad move and made it difficult to turn on and off. If I remade this I would put the motor on top and drill a large hole in the side of the car so the motor shaft sticks out to access the wheel pulley.
Here are a some useful videos related to this project
Let’s use a vibrating toothbrush to make a “swappable power unit” to power my toy cars.
Helpfile – removing offset weight from motor of Dr fresh Velocity Toothbrush
Rubber Band Powered Car shifts 500 grams (the car adapted for this project)
I cannot answer comments from people who have blocked replies, so if you don’t get a reply to your question that may be the reason. It is probably worth reading my video description first because the answer may already be there. If you need a reply make sure your Google+ privacy settings allow replies from users that are not in your circles or add me to your circles first.
Direct link: Make sure “Who can comment on your public posts?” is set to “Anyone”.
I have over 1800 videos on YouTube covering a wide range of subjects. To find them follow my YouTube search guide or see my playlists
Generally my projects are for my grandchildren to enjoy. OK, I enjoy them too. If anybody else likes them, that is a bonus. I like to keep my work as simple and basic as possible so that it can be copied easily and improved by anybody who wants to try themselves. I recycle or repurpose items rather than buy new and when I do buy I like to keep it cheap.