The pictures show the Dutch built TIBO / Jawa powered machines that were built by Dutchman Tjitte Bootsma. The TIBO is currently the most popular machine used in iceracing and all the top riders of today are using these TIBO machines.
The vertical engine is mounted as far as possible forward in the frame whilst the suspension comes by the way of White Power shocks.
The yellow and red machine is the 1999 model ridden by Dutchman Gerrit Rook, whilst the other machine (See Below) is the latest model for the year 2000 and was ridden by Bootsma himself.
See also Jakovlev, a copy of the Tibo.