IT WORKS !
Today's high speed attempt did show +200 rpm and relevant speed increase on the clock !
The context :
since fitting the 16*39 sprockets (up from 15*42 IIRC) the bike was not able to hit its peak power in 5th @ 8500 rpm.
Friday I got 8000 rpm (with the raised wind shield and tucking)
Today with the cardboard kammback and not tucked to make it work properly, I got 8200 rpm on the same slightly downhill.
The start of the hi speed attempt is consistent since it is a speed camera ...
Maybe the air was hotter / more dry allowing for a better mixture (I run pretty lean being on E10) and the wind was more still (I don't recall).
Now the bike clearly shows its limits in terms of hi speed handling being very short and light but I can go round that (see my pic of the 17" rear wheel on longer swingarm)
Anyway, I am very pleased !
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