Some points to remember when building a Barrel Roll:

• Remember that you want the train to spin in a straight line, not the track. You want the track to be like a very stretched out corkscrew.



• Make sure that you don't make it too tight, which will make it loose speed.

Step 1

First you neeed to make the base. Make sure that the connectors are facing the correct way. Notice how the entrance and exit of the barrel roll are offset.

Step 2

Next you will build the supports for the entry and exit to the element.

Step 3

Now, to finish the supports, you will place a support for the upside-down section. The k'nex on the very top is to keep the crossbrace from moving too much.

Step 4

This is what it will look like after connecting the track. Notice how the barrel roll is more of a very stretched out corkscrew than a simple twisting track.