At the Louisville Science Center today I picked up a vehicle somewhat had built at the model table and used it in my circuits demonstration. It was a nice design and I used for my morning and afternoon demonstrations. The morning demo was a little different than the afternoon in that I had a chance to change the vehicle frame to incorporate the fan motor horizontally.
Here is a picture from a movie I took of the vehicle at rest at the end of the table.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjj6kXVr3_ND-984GsWgK30Tde9ZXrP4ieuxYzEvzACLe81jK0cHPSxDfYeyF7mnI7PCaxeYfd1eCHIDRKwLjvEhdkWAzWRM7_x_veiuyfL5Khccj0CDGAqs3x6ZwQrCMmN89xV-w/s400/car+from+movies.jpg)
This picture shows the vehicle moving away from the camera being propelled by the spinning fan as I power it with the dynamo.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgtvwRBgWIv9hK9AGe6ZGzsY0ZW_db88C8ASIhPQ3GlM2Zfl4eN-UbBx4dSRcngsLyqG7eo0arBeIKZ0YK8mtkR01e_UmSW3n3EqkAYy-SpScr_gmim0SWtv44UaBt9XiPLaRUCmw/s400/car+moving.jpg)
The picture below shows the afternoon car with and expanded back frame that shows the rubber band attached motor with the connection wires fastened to the front.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhs0c2sMpSCRMqVTXmrTia__p5ptPLutoiZ6ASEsKRh2d_EGTgf1PFzE3KckDeZWhoqdmGDPDUr7S2ZLYSVQMZnkNEc173lJGYAHuyP6Ug9oHiEYVZXGDCKf0tba041_OWtvYDElA/s400/human+powered+car.jpg)
This image shows the morning version with a narrow top frame and the motor attached with 4 rubber bands. The motor started to fall off and one of the rubber bands broke after 16 moved the car down the table.
Neat idea but not built to last.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhicqm63KTgG_u7nnd01hIa6qLsixgAsUlNptA6aOURi3nsjlwEfMGNjR9rbuG3SRzXSiFhcG0uaLB4ZucVCerIo99WP0b9wejpNxxI2cGUZcPNozhEjVqr80BGMKOYtZoq5TsIaQ/s400/early+morning+car+version.jpg)
It was good to see that design work and get some children to think about creative ways to use their toys.
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