Message-Id: <37406F42.6F1F2D44@progress.com>
Date: Mon, 17 May 1999 15:34:26 -0400
From: Marcelo Pacheco <pacheco@progress.com>
To: Pine Pienaar <pine@CPro.co.za>
Cc: lancair.list@olsusa.com
Subject: Re: Lancair Deltahawk  ???
References: <001201bea05d$0be1c260$2af925c4@default>
Mime-Version: 1.0

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Pine, hope you don't mind sharing your original e-mail with the list.

Official information from deltahawk is at www.deltahawk.com.

The engine is probably going to be available only by the end of the
year.
A new engine mount will be required. The standard engine will also
require a new/modified engine cowling. A inverted model is planned
that will fit on a IO-360 cowling.

I'm 100% commited to waiting for the engine to be available due to:

200 HP (turbocharged) at a installed weight under a 160HP IO-320.
Very fuel efficient, based on published figures, should have over 6
hours of flight endurance at 65% power with the overhead tanks.
100% power up to 9000-10000 ft.
85% power up to 15000ft.
Should be able to climb to 17500ft in about 10 minutes.
A simple engine mechanism, no spark plugs, no magnetos. Diesel
priciple combustion. Jet-A or Diesel fuel.
More smooth power supply, as this engine provides positive torque
throught each crankshaft revolution, while a Lycoming has 30 degrees
negative torque at some point at each revolution (web site has some
more details about that). That means lower stress on the prop and
lower prop vibration.

Projected costs a lot lower than a 200 HP IO-360. Only 4 qts of oil,
no spark plugs to replace, and the engine itself is expected to cost
$16K-18K.

We probably don't need more than 60% power (equivalent of 75% of
160HP) for cruise, that should be available well into the flight
levels, that should allow a very fast high altitude cruise. FL250 at
indicated 200KTs is about 270KTAS. 5 hours at 270KTAS = 1350nm range =
1500sm.

2 stroke, V-4 design.

With a constant speed prop, only 2 levers required: power and rpm. No
mixture or carb heat.

I'm no engine expert, and would apreciate any arguments against, short
of the risk of a completely new design. I'm also intending to wait to
hear back from the early users before actually putting money down.

I have no association with deltahawk, but I like the ideas so much I
thought our coleagues should know about it. There's a 400HP V8 design
planned as well.

Marcelo Pacheco

Pieter Pienaar wrote:
> 
> Hi
> 
> I'm building a 360 and would like to find more info on the hawk engine as it
> fits, and cost for the 360.
> 
> Please help.
> 
> Pine
> pine@cpro.co.za
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