How to layout berms

Today’s work on berms.

Finding the centre of existing berms using two dissected chords.

What is the best radius for a berm? Somewhere between two and three times the width of the track.

Laying out the out-track to make use of the tangent line the rider will be following as they leave the berm.

Euler Curve for the cross-section of the berm, giving a 5m wide track a riding width of approx 5.6m in the berm.

Just need to get it all into some kind of easy to follow instructions.