I guess it is the same on planes as helikopters. a well tuned 90 glow about 3.5-4 hk. elektric 7-8 hk and that is if u r very good tuning a nitro. elektric same every day

Electric is the future. All your glow engines and accessories will go in trash(obsolete) pretty soon. switch before its too late.

Thanks for the advice crazy pilot. I would trash my ic engines the day Aviation industry starts using electric powered, aircrafts to transport people (and yes I am aware of one off experimental electric powered aircrafts).
I do not think I would need to trash my IC engines in my lifetime atleast. The next generation may pick thier choices though.

I think CrazyPilot's point (put in milder terms ) is that nitro engines may slowly suffer the fate similar to what happened to Mhz radios when 2.4Ghz became common. 

But for the 25% of people who fly .90 size or higher, conversion to electric will take a long long time (especially on the 50cc and higher ranges).  And that conversion would never be complete (or near-complete).

as long as it is a motor interest nitro will still b there,no matter how good and cheep batteries get,after all we are hobbyist and the grate thing is that we like different things

i like electric not only because it is superior in performance, more for me a practical thing and travel alot and in eu i can not just go and fly at a field   with a glow heli, then i get busted and get a grate fine. i would like to have a nitro as a former top fuel mechanic but i cant stand the noise of nitro model engines
but i can c new BIG helis that is coming with not even a option of glow. it would just not work for competitive 3d flight

By former Top Fuel mechanic,do you mean a mechanic who worked on Top Fuel dragsters?

no top fuel bikes. or super twin they called it in Europe . the class for max 2 cylinders.
this was 1 of our compeditors but he is a good friend and I made some some of the chassi parts for it.
www.karlingracing.com