Hi, i would like to introduce myself here.
First of all, my name is Tom, i'm 22 years old and i study Automotive Engineering (@ bachelor level, i've already got my bachelor degree mechanical engineering). One of my hobby's is my FS1. I've bought my fizzy when i was 17 (before that, i had a Kreidler, stupid german piece of junk
). I've restored it completly with my dad a couple of years ago.
-43mm FS1 cilinder, tuned by myself (not to extreme)
-reed valve inlet with carbon reed's (i also have a rotating valve engine, but reed valve runs better, wider powerband etc)
-13/39 gear ratio
Top speed: 90 km/h on my GPS (with the best possible conditions), but normally it runs 85 km/h quite easily.
I'm planning to buy a 5-speed engine this winter, and to fix a Selettra inner-rotor ignition (already got it, and modified it to fix it on a fizzy-engine) from a Rotax racing kart. Also I think i'm getting my cylinder bored up to 43,5mm with a new piston (piston clearance is to big now... the compression can be better).
Here are some pictures:http://img66.imageshack.us/img66/4087/f ... iumpy4.jpghttp://img66.imageshack.us/img66/9144/f ... iumov9.jpg
Also i like to experiment with tuning, but sometimes it goes wrong, and you get something like this http://img377.imageshack.us/img377/5851 ... rgelq9.jpg
I've milled down the cilinderhead too far, as a result i've had too much compression and the engine started to detonate... http://img408.imageshack.us/img408/7629 ... 006tt0.jpg
Work in progres...
Modified Selettra ignition:http://img169.imageshack.us/img169/639/ ... 002ja5.jpghttp://img175.imageshack.us/img175/9982 ... 004hj3.jpghttp://img408.imageshack.us/img408/8758 ... iumgy2.jpg
A specially tuned cilinder, i got it from a forum member of our fizzy forum:
I also restored my sisters boyfriend FS1 last year (see pictures). It runs about 85 km/h with a 43mm FS1 cilinder, 16mm and also Homoet exhaust.http://img383.imageshack.us/img383/165/ ... larxq3.jpg