Luc Foekema 6.9 sec run SBO Lisse 2011 dragrace 150 meter

SBO Lisse 2011

Specification:
Ftt Kreidler engine 90cc
5 speed (special)
UitraSap Ignition
30hp at 14.500 rpm
2014 Prostock Record holder 6.62 sec at 150m 128km/h
Topspeed at 1000m distance 200km/h

Profile:
I started racing in 1964. Computers were still not there. I did hardly no calculation. With the advent of the computer everything has changed and complicated calculations are no problem any more. All old historical notes were struggling. In the past 15 years I got a number of programs. Beside I did developed many programs myself in Excel. It was my profession to do so for my employer for many years.
In 2003 also began making calculations for third parties. Not everything, but a lot can be calculated very accurately for any twostroke engine. For instance the exhaustpipe can be calculated in almost exactly the correct speed for which the setup and cylinder is optimal. Even by a large kart engines manufacturer (TM) was found to be not entirely correct. With a new calculated combustion chamber and exhaustpipe it was far better then before.
This is also partly due to the information I got from Jan Thiel and was freely available after retiring from Aprilia racing end 2007.
Also the UltraSap ignition developed by my son Raimond was a very important part. The combustion and power are strongly influenced. Read about this subject my note on Facebook

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Sincerely,
Luc