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Hester Yamaha Aerox 1000cc Scooter-Roller 150PS World Fastest Scooter
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Little Gizmo in 4 sec to 100 km/h Ftt Kreidler engine, made by Luc Foekema
This is a heavy tuned Kreidler 90cc engine Bore 53.7 mm stroke 39.7mm - 5 speed - Rotary valve - Ftt UltraSap ignition - Ftt calculated Exhaustpipe with - Max power 30hp at 14.000rpm, with normal fuel 98 octan, no additions, beside lubrication 1:25 This test run was made Sept. 19, 2011 some days before te match. In less than 4 sec tot 100 km/h Topspeed in video is 106 km/h (at 150m about 130km/h) Km/h in 4 gears: 53 - 67 - 92 - 106 5th gear not used, the track is to short. The last Dutch Prostock record run over 150 meter was driven May, 2014 Time 6.62 sec, 0.01 sec reaction time. Which is 3.85 sec to 100km/h Ftt calculations for combution chamber and Exhausts exactly dedecated to your setup, The shortest and easiest way to realise the best performance possible of any twostroke. Just contact me or read: the comments of my Ftt calculations: https://www.facebook.com/notes/luc-foekema/comments-on-ftt-calculations/409 4365256552 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 https://www.facebook.com/notes/luc-foekema/ontsteking-en-verbranding-in-een -2-takt/4209180766868 Sincerely, Luc

Maxiscoot 2Evil twin bicylinder / zweizylinder 1.DSSC Saarbrücken 2010 56PS/41kW @ rearwheel!
BigBore Zweizylinder (2x 86cc=172cc) von Maxiscoot.com Von 0-100km/h = 2,7sec / 0-150meter= 147km/h / 0-150meter= 5,7sec. /Hinterradleistung: 56PS Auf einem herkömmlichen Gilera DNA 50cc Gehäuse wurde mit einem selbst gefertigtem Mittelteil und einem Junior Dragster Reifen ein absolutes Beschleunigungsmonster geschaffen.

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