"Newps" wrote in message
...


Mike Rapoport wrote:




I would disagree, there are a lot of reasons to buy a turbo (nomalizer or
otherwise). To fly higher, fly faster, climb much faster, takeoff
shorter (much shorter at high DA).

You also have to look at your options. I will be putting the Pponk engine
into my 182 next fall. It is 275 HP. My airplane will outperform the
Turbo 182's until the density altitude reduces my 275 HP to less than the
230 HP of the turbo engine. And since I am buying it for takeoff and
climb performance and not cruise speed I will always outperform the turbo
because my typical mountain flying mission always allows me to have more
than 230 HP available. The breakeven point is 84% power.

Agreed. The ultimate for the Helio is the 450hp Allison engine. Although
it is a turbine and therefore loses power with altitude like a normally
aspirated piston, it still have more power than a turbo normalized recip and
is significantly lighter as well.

I am somewhat surprised that you always have 84% power availible for takeoff
in the mountains.


Mike
MU-2