Craig,

I only have 100 hours on my IVP and have stopped to do a lot of mods.
The numbers reported by others seem consistent if you take into consideration how the airplanes are equipped and the power setting used.   I'm expecting 260-270 LOP up high,   but actually down low tends to be the governing situation.

I got a piston because I wanted to be able to go very far with minimum stops.
For your mission, the turbine might not be a bad match and they are incredibly cheap right now.
It actually does have really good top speed.

...but to own a LNC4 you have to be willing to know everything about the airplane and tinker some.
If you are even thinking about a Mooney Rocket you might want to think really hard about if you want
to spend the extra time to own an experimental.   A Rocket with TKS is pretty cool and will get the 220 KTAS.
...plus you can have your mechanic maintain it, you can sell it, and it's insurable.

If you do go the LNC4 route, there is huge variance in the airplanes in tank capacity and in how well tuned they are for speed.   Read Fred Moreno's papers on the lml website to get just an idea of how far you can go.

Colyn

On Mar 2, 2011, at 9:31 PM, Craig Jimenez wrote:

> If this is posted elsewhere, please point me to the data.
>
> The Lancair site says a piston IV-P will do 330 mph (~286 KTAS) at FL240.
> I'd be interested in what speed and fuel-flow you guys see at sustainable
> power settings at various altitudes.
>
> Most of you flying LOP?  I'm going to the APS class this Friday in Ada.
>
> How much speed do you lose equipping with the thermal or TKS icing products?
>
> Although probably beyond my budget, I'd also be interested in similar data
> for turbine-powered IVPs.
>
> My typical flight is 720 nm Oklahoma City to Phoenix, MEA 13000',
> prevailing westerlies, 1-2 people and 50 lb stuff.  The Mooney M20J does
> great on non-stop range and economy, but I'm evaluating options for going
> a lot faster, and preferably with at least inadvertent ice equipment.
> Currently thinking Mooney Rocket, P-Baron, IV, IVP...?  Thoughts on
> appropriate planes would be welcomed.
>
> Craig
>
>
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