ORIGINAL: mongol-

Hello,

Well, just bought the Osmose before 2 months ago ( second hand ) and ofcurse here comes the big problem :
the weight of the model for now is 4980 gram.

Additional details :

Engine : OS-FS-200-P.
Engine mount : Hyde Mount - UNIVERSAL
Battery(electric) : FlightPower 1350mah (7,4) + DigiSwitch.
Prop : Meijzlik carbon fiber 18X10.
RPM : 8200.
The rest - the orginal parts which came with the ARF Deluxe Version.

From the first flight it was easy to see that the engine (OS-200) cant be good enough for the Osmose, it so critical the model just cant keep on 90 degree status for more than 8 seconds.
Yes, its could be because of the heavy weight reason of the model, but ...

Its clear - that model just not the best for F3A and maybe need to be sold - but - I wanted to ask if its possible to run the Osmose with Ys-160 Engine (i can remove more parts from the model so the weight limit for 5 KG isnt the problem ) so the model can be good enough for F3A for the minimum performance..

Thanks]]

Mongol,

Rest assured that the Osmose is a top level FAI plane providing it is setup "basically" OK. 8200 rpms on the 18x10 should give tremendous vertical unless your are at very high altitude or something. The YS 160 would be plenty of power for it as well. Do you have F3A eperience?

What is the 8 second 90 degree test?
thanks
Jim