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Date: Thu, 03 Mar 2011 15:37:47 -0500
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Subject: Re: [LML] LNC4 Observed Performance?
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From: Bob Rickard <r.rickard@rcginc-us.com>
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Craig=20

I bought an awesome IV-P with belly scoop, AC, extended fuel (106 gal) and E=
lectric deice.  3550 pounds gross weight full fuel and bags (1050 pounds of f=
uel and stuff).  Completely stock TSIO 550E (350 hp) with new hartzell scimi=
tar 3 blade prop.

I could do 230-235 KTAS on 18gph LOP 34" MAP and 2500 rpm, 19,000'

Then I had the deice system taken off (long story), and now I can do 245-250=
 same setup.

I am now planning to mod the AC system to one with no drag ( tail setup), an=
d hoping to get another 10 knots or more....

Lastly, I know mine is one of the slower IV-Ps out there.

I fly routinely 1100 miles non stop on a tank of gas from Phoenix to St Loui=
s.  Tough to do that with a turbine.

Good luck

Bob Rickard


On Mar 2, 2011, at 7:31 PM, "Craig Jimenez" <cj@AwlBiz.com> wrote:

> If this is posted elsewhere, please point me to the data.
>=20
> The Lancair site says a piston IV-P will do 330 mph (~286 KTAS) at FL240.=20=

> I'd be interested in what speed and fuel-flow you guys see at sustainable
> power settings at various altitudes.
>=20
> Most of you flying LOP?  I'm going to the APS class this Friday in Ada.
>=20
> How much speed do you lose equipping with the thermal or TKS icing product=
s?
>=20
> Although probably beyond my budget, I'd also be interested in similar data=

> for turbine-powered IVPs.
>=20
> 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.=20
> Currently thinking Mooney Rocket, P-Baron, IV, IVP...?  Thoughts on
> appropriate planes would be welcomed.
>=20
> Craig
>=20
>=20
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