Here's J and Big J making a prototype before everyone showed up. J decided on the recyclable, balloon, straw, and where to attach it.
J's race car:
And the races!
|This one won the distance challenge|
There weren't rules against double balloons
|A 4 yr old friend let's the smallest balloon racer go|
It was weighed down by sand.
|It decided it wanted to play in the sand|
|Go, go, go|
- Balloon racers don't always behave as you want them to behave.
- Wheel alignment is a key to straight travel.
- More balloons = more power!
- Sweep the ground before trying your racers.
- Make sure your cars are directed downhill (might as well work with gravity).
- If your balloon is too powerful, add weight to help drive your car (sand, rocks, etc).
- Don't eat ranch that has been around 15 little kids who double dip.
- Kids LOVE cones!
We're so thankful for everyone who came to enjoy science with us this weekend. I am hoping to make family science day a regular occurrence (hopefully with a snazzier name too). If you are interested in joining our fun, I'm compiling an email list for our science family days in the park in the SF Bay Area. Please email me (see link on << side bar) to request to be on this email list.
P.S. Here's a how to for our original balloon racer and why we went with the recyclables we chose.
- Better way to do the axles (without punching holes): recyclable racers