Curved Track R40 1/2

A half-length version of the orginal R40 curve.

• The radius is the same as the original LEGO® track, the length of the track is half of the original.
• Part is designed taking into account all of the LEGO® geometric requirements which makes this part fully compatible with original LEGO® tracks and bricks.
• To build a full circle you need 32 pieces.
• A circle has a diameter of 70,4 cm / 2.31 ft.
• Connects perfectly to Trixbrix and original tracks.
• Dark Bluish Gray color (same as orginal).

Detailed explanation of R40 radius

R40 is the radius measured from the center of a circle to the centerline between the rails using the LEGO® stud as the unit. A LEGO® stud is 8mm.

The space needed to have the full R40 circle can be calculated as follows: (40 + 4) * 2 * 8mm = 704mm = 0.7m.

This measures the diameter (2 * radius) of the outer shape of the track - that's why we added 4 studs in the formula.

In general, the formula for calculating the outer diameter of a circle track is:

(R + 4) * 2 * 8mm

See also:

Curved Track R32
Curved Track R56