Caroline, age 12 of Gambrills, MD wrote:
we did it in class and my group was one of the only ones that it worked it was so cool but alot of groups rubber bands broke

Madison, age 9 of San Angelo, TX wrote:
it did work SO GREAT!!!

Matt, age 10 of Omaha, NE wrote:
When I tried it woulnd not move. so, I tried a washer with a smaler hole but it still woulnd not work.

Dan, age 14 of Rockford, MI wrote:
It worked fine although it didn't go in a straight line. Enstaid of toothpicks, I used a nail and a pen.

Josh, age 13 of Indianapolis, IN wrote:
It went sideways and then I tried again and it steal went sideways.

Jessica, age 13 of Pensacola, FL wrote:
Mine only went a couple of feet then the rubber band broke. Now the spool will move in place, instead of the whole thing.

Tom, age 15 of Weymouth, MA wrote:
It raced unflawed and went perfectly straight.

Mariah, age 7 of McDonough, GA wrote:
It went down the ramp and crashed into the wall.

Jessica, age 14 of Ocoee, FL wrote:
First you have to take a spool and put some whells on them. Then you add a lot of balloons to it. When you think that it has enougf balloons on it then let it go.

Alexis, age 10 of Cotton Valley, LA wrote:
Mines didn't work I did everything but it stiil did not work want do you think I did wronge?

Alexis, age 10 of Cotton Valley, LA wrote:
I could not get it to work I don't no why. I used every thing that was instucted but it sill didn't work.

Kate, age 13 of Ellsworth, ME wrote:
I couldn't get it to work, I don't know why. I used braces elastics and all the other right stuff because I couldn't find an elastic small enough. Why didn't it work? My science teacher said that it didn't have enough force. I was going to use this for my newtons scooters project at school, but I ended up using the can car instead. What it is is like a bigger version of the spool racer. My dad really liked using it, he used to make them when he was a kid. Thanks for making all this cool stuff on here, I am waiting for another fun activity.

Jonathan, age 11 of Oakland, CA wrote:
It was cool. My grandpa played with them when he was a boy. He said they were called tanks. He made them out of different materials.

Jay Z., age 16 wrote:
When I made it it went fast.

Justin C., age 8 of Columbia, TN wrote:
I love it.

Roxanna J., age 8 of Los Angeles, CA wrote:
It went real fast. Last time I wound it up too much and it broke.

Sabrina M., age 6 of Martinez, GA wrote:
I took a spoon and put and egg with a penny on the bottom. It's a real challange.

Tyann S., age 9 of Huron, SD wrote:
Mine didn't go, the pencil dragged to much. I tried to make wheels out of toothpicks and buttons to keep the pencil up. That didn't work either.

Dustin, age 10 of Crawfordsville, IN wrote:
Mine worked really good. Mine went strait the first time. Maybe thats because I changed the design. I did all the steps, then I added another pencil and washer on the other side of the spool!

Kara D., age 9 of North Scituate, RI wrote:
At first I forgot to add tape to the Q-tip because I used a Q-tip instead of a toothpick, and the Q-tip went wild. When I added tape, it went perfect.

Kristyn wrote:
I tried to make a spool racer. It didn't roll very fast or roll in a straight line. Did I not wind it up enough? What size of spool and rubber band and pencil should I use? What surface do I roll it on? Do you know why it didn't work?

Ryan W., age 10 of North Port, FL wrote:
If you put two pencils on each side of the spool, it will not only go faster, but in a straight line, too.

Scott P., age 11 of Belvidere, NJ wrote:
When I tryed mine it only went a inch or so.