On sunday March 16th at 20.00 hour I could ancoune that the first Foekema Symmetric Twostroke has twisted for the very first time. It is an aircooled 50cc Kreidler engine with 4 exhaustports and 2 exhaustpipes (each pipe with 2ports), 10 transfers en one 30mm rotary valve inlet system. It was de first time it has been started, much smoke of the oil which was inside the new cilinder. Now many details had to been adjusted in the coming period.
After the announing this new FST twostroke system on Saterday January 19th 2008 at 20.00h, every thing has been done to be the first one who realised a new working system. Before touching one peace of metal, I started to make many calculations, which cost about one month. This looks a little overdone, but I wanted to take no risk to realise an usefull system. And every thing during this time show to me that I was going the right direction. Ofcourse many people doubted if this new system would work. The only way to find out is to make a working prototype. I have to admit that Frits Overmars gave me the push to do it, otherwise I would have it only in my head, as he did for about 30 years. But now realising it, I do not regret it for one moment.
If it would fail, I lost 2 month work in prepearing my racing engines for the comming year. But now it seems to be a working system I have to change my plans. Two month ago I did write in an interview that 35hp on the backwheel is not very realistic for a 90cc, but now I will change my mind about that. Because in the mean time some changes in electronics could also have a very big influance.
After the announcing on Jan 19th, many replies I did receive and also some corresponding did appear on this subject.
Some people I did not speak for almost 40 years and may be this wil open new ways.
From many people I heard this system already exist, but not one proof on paper or one photo is available at this time. Most symmetric systems there were in the past were not 100% Time Area. So I take those talks till this moment not for real.
But the most important proof is "were is the system to day" I don't see it. Wasn't it not good enough.
The first sound I heard from the FST is not one which will disappear very soon.
The sound on the video is a little soft, in reallity it is not. The two pipe are almost 100% the same, even the bended part after the belly is the same. The difference in length is within 1 mm and can be corrected by shifting the pipe on the header. May be this can be done on the sound, because the human ear is very sensitive for small differences.
http://nl.youtube.com/watch?v=jtTc7sk8WS8 For more information
http://fullspeed.to/50cc-racing Regards,
Luc
