Click here to watch the on-ride POV
Kirnu (Linnanmäki) car 01.jpg
One of the cars mid-course
roller coaster
Location Helsinki, Uusimaa, Finland
Status Operating since April 27, 2007
Cost €3,000,000
Manufacturer Intamin
Designer / calculations Ing.-Büro Stengel GmbH
Onsite construction RCS GmbH
Type Steel - 4th Dimension
Model / product ZacSpin 25m
Riders per train 8
Hourly capacity 640
Propulsion Vertical chain lift hill
Area 29 metres × 12 metres
Height25 metres
Top speed60 km/h
Length142 metres
Track inversions0
Rider inversionsVariable
G-force2.6 g
Kirnu (Linnanmäki) 2008 01.jpg

Kirnu (Finnish for "Churn") is a steel 4th dimension roller coaster located at Linnanmäki in Helsinki, Uusimaa, Finland. It was manufactured by Intamin and on-site construction was handled by RCS GmbH.

The ride is the first ZacSpin model produced by Intamin. It is located between the Vekkula (funhouse) and Linnanmäki's performance stage.

Design[edit | edit source]

The entire layout

The ride has a short layout, with no lateral turns. The cars spin, and the amount of spinning is affected by rider's weight.

Trains[edit | edit source]

3 cars. Riders are arranged 4 across in 2 rows for a total of 8 riders per car. There are 4 riders on each side of the track, with half facing forwards and the other half facing backwards. The 4 seats on each side of the track rotate independently from the opposite side.