Robot Racer

Step 9 Rubber band mechanism

Ok, now on to the most complicated part of the instructable !

Basically one end of the rubber band is attached to a fixed rod and the other end is on the rear axle,
when the car is pulled back the elastic band is wound up and then when you let go it zooms off.

Steps for the front, fixed rod;
1 Cut another small section from your skewer, (same size as the height of your tube)
2 Drill a small hole in the front of your car, on the top.
3 Insert the rod into the hole
4 Loop one end of the elastic band around the rod
5 Apply glue to the end of the rod to secure it in place

Steps for the back axle;
1 Use a paper clip with a hook on the end to grab the elastic band
2 Loop the elastic band around the axle
3 Your done !

Comments

[premaldesai]

I agree, I could not understand the rubberband mechanism as well. It, didnt work for me at all...

[sk8r kid 7]

Will you please make a video dont understand.

[sk8r kid 7]

I don't understand what you mean at the end part on the rubber band mechanism.Nice video though!

[soggymushrooms]

What do you mean by "hook it around the axle"? Plz help!

[arhillbilly]

Hi, It would be really helpful to have a good closeup of the rubber band attachment mechanism on the drive axle. Great instructable!