Gearing down WeDo motor controlled car to run slower

This previous Lego car driven by gears and motor (see photo) perhaps is a bit too fast and would quickly move till the maximum allowed by the length permitted by the wire.

The first model we have the 24 teeth crown gear with the 24 teeth spur gear. To slow down the speed, we need to gear down connecting the 8 teeth spur gear to the 24 teeth spur gear. Here is a photo of the geared down car model. You can see how to remake the car model by looking at this photo. See details of the down gearing here.

To make the car runs even slower, we do a further down gearing. Look at this photo to see how. For a closer look at the downgearing look at the details here.

Photos

first car model

Step 5: Add bricks to raise level