REFLECTOR: Engine Selection

[John Dibble]

OK, I'll bite.  What don't you like about the Franklin?

John

Donald Royer wrote:

>   Incidentally, I am not flying with a Lycoming. I went really retro,
> I have a Franklin, which I consider to be a piece of junk. Don Royer
>
>      ----- Original Message -----
>      From: J.P. Brooks
>      To: Velocity Aircraft Owners and Builders list
>      Sent: 6/16/2004 3:49:06 PM
>      Subject: Re: REFLECTOR: Engine Selection
>
>
>
>      We ran the inverted just before OSH last year.  Foolish to
>      consider?... or foolish to buy when it does fly?... or
>      foolish to buy and install when I does fly and make the
>      horsepower?...   or, foolish to consider or buy or install
>      or believe it may just make the horsepower and have the fuel
>      economy?......    A through D we must be foolish just to try
>      to build it... right?
>
>      JP, chief fool, DeltaHawk, Inc.
>      Don, what engine do you use now and how much did it cost you
>      to build?
>
>
>      At 02:39 PM 6/16/2004, you wrote:
>
>     > Call me foolish, then, although they have built the
>     > inverted version and have begun testing it.  That's the
>     > one I'm planning to use.
>     >
>     > Doug
>     >
>     >      ----- Original Message -----
>     >      From: Donald Royer
>     >      To: Velocity Aircraft Owners and Builders list
>     >      Sent: Wednesday, June 16, 2004 3:44 PM
>     >      Subject: Re: REFLECTOR: Engine Selection
>     >
>     >      I saw the test plane at Oshkosh last summer. To me
>     >      the hump in the cowling required for the upright V
>     >      engine utterly ruins the lines of the plane. I though
>     >      that it was really ugly. If and when the inverted V
>     >      is ready and flying, it should be a very attractive
>     >      option. However, considering the very slow
>     >      development history of the engine, I feel that anyone
>     >      would be foolish to consider using the inverted V
>     >      engine before it is actually built and flying.
>     >
>     >
>     >      I had very enthusiastic plans to use the Delthawk
>     >      eight years ago.
>     >
>     >
>     >      Don Royer
>     >
>     >
>     >      ----- Original Message -----
>     >      From: Douglas Holub
>     >      To: Velocity Aircraft Owners and Builders list
>     >      Sent: 6/16/2004 1:13:24 PM
>     >      Subject: Re: REFLECTOR: Engine Selection
>     >
>     >      Plenty of power. He's got a 173 RG. The Velocity was
>     >      originally designed for 160 hp.  The DH180A4 is 180
>     >      hp up to 18,000 feet. The DH200A4 is 200 hp at 18,000
>     >      ft. Plus, the diesel has better torque at lower RPMs
>     >      than a Lycoming, and propellers are more efficient at
>     >      lower RPMs. Plus it weighs less if you take into
>     >      account that it is 30% more fuel efficient, so you
>     >      don't need to carry as much fuel weight to get the
>     >      same range. A DH160V4 is in the factory's test
>     >      airplane.  With the 160 hp engine they clocked it at
>     >      202 mph at 15,500 feet, and 161 mph at 5,500 feet.
>     >      And that is with a fixed pitch propeller.
>     >
>     >
>     >      The DeltaHawk has half the moving parts of a
>     >      Lycoming, no spark ignition to interfere with the
>     >      radios, and burns readily available and slightly
>     >      cheaper Jet A.  It is much smoother because it's a
>     >      two-stroke. Plus, since the DeltaHawk test platform
>     >      is a Velocity Std RG, the firewall foreward package
>     >      is pre-designed.
>     >
>     >
>     >      No, I don't own stock in the company. Just excited
>     >      about the first significant improvement in general
>     >      aviation powerplants in 50 years.
>     >
>     >
>     >      Doug Holub
>     >      Std Top Door, 50% done, 80% to go
>     >
>     >
>     >
>     >
>     >
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