Roller coaster in Finland
Watch the on-ride POV
One of the cars mid-course
Location Helsinki, Uusimaa, Finland
Status Operating since 27 April 2007
Cost €3,000,000
Manufacturer Intamin
Product ZacSpin 25m
Designer / calculations Ing.-Büro Stengel GmbH
Onsite construction RCS GmbH
Type Steel - 4th Dimension
Riders per train 8
Hourly capacity 640
Propulsion Vertical chain lift hill
Area 29 metres × 12 metres
Height 25 metres
Top speed 60 km/h
Length 142 metres
Track inversions 0
Rider inversions Variable
Duration 0:42
G-Force 2.6

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.

Opened in 2007, the ride is the first ZacSpin installation from Intamin. It is located between the Vekkula (funhouse) and Linnanmäki's performance stage.


The entire layout

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


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.

External links

  • Kirnu on the Roller Coaster DataBase.

Articles on Linnanmäki