offtopic: @iloeisenberg: wieviel zähne hat die 2,61 er polini primär?

müssten 24 beim kleinen ritzel sein, oder?

thanx, c.

@cordobez

Sorry das weis ich jetzt gar nicht mehr. Hab mal das kleine und große gezählt, dass es auch wirklich eine 2,61er ist, aber kann mich leider nicht mehr daran erinnern :-/

I take the opportunity of this thread to ask a question

I'm still undecided whereas I should open my engine to change the 2.34 primary for a 2.55.

The good thing about the 2.34 is that it is less stressfull for the primary elastic thing and for the gearbox, even if the scooter is maybe less agressive...

BUT

My experience with the 2.34 (while I was jetting doing massive acceleration) is that the scooter start to lift the front wheel "by itself" in 2nd gear :sabber: , so I was thinking that maybe the 2.34 is fun enough... Actually I'm affraid of what could happen with the 2.55 and I'm also concerned about "reliability" (even if of course, this engine will brake one day :D)

My question is: According to you, does a 2.55 primary make sense on a ~17+Hp engine smallframe ?

P.S: Yes, I have a zirri short 4th

My question is: According to you, does a 2.55 primary make sense on a ~17+Hp engine smallframe ?

yes.

depending on the powerband. I do need a short fourth gear, to keep going. the blue one is my current ride.

Okay that's interesting...

I guess I need a dyno diagram to see if it worth to keep or not the actual 2.34 primary...