Start with a skinny 2M plane.....like a Prophecy, and cost it out.
Move to a current day "widebody" 2M plane, and cost it out to have the same thrust ratio, available speed, same noiselevel, wingloading, servo power, etc.
Then move to a current day IMAC 2M, and cost it out all things equal.
"Bigger" costs more, this is not something where economy of scale helps. Increased power becomes quite expensive with no increase in noise level.
Regards,
Dave Lockhart
ORIGINAL: patternflyer1
I don't buy the IMAC plane costs more thing. Of course it's going to cost more, the plane is 120'' winspan. That's a silly thing to compare to. Compare it to a 2m IMAC plane. Then you'll see that they are indeed MUCH cheaper. Because they don't have to limit themselves. The size of our 2m box doesn't change from this proposal right? Sizes of our fuses have hugely increased in size. So we build lighter. Lighter seems to cost more to me. I dunno.
Think about this. When the rule changed for us and allowed bigger motors, of course the size went up along with the price. It went to where it is now. Did they design this rule around the current pattern plane? Or did they design it for what there was back then? Or did they just take a stab at it and guess? Do you think they had our current technology in mind when they designed that rule? Do you think they could have built a plane back then to weigh 11 lbs and fit in the box with the available materials?
C