REFLECTOR: Engine Selection

J.P. Brooks jp211 at comcast.net
Thu Jun 17 09:59:02 CDT 2004


I believe I must have been at the front of the line for "foolishness" when 
God called me up to receive that gene.....
.....and glad that the Doers didn't suspect I had a corner on the 
market!...  ;-)
Remember, Langley was almost there first.
JP
flat-Earth society


At 07:44 AM 6/17/2004, you wrote:
> >>A through D we must be foolish just to try to build it... right?<<
>
>Well......yes. But personally I am very glad that you are so foolish to 
>put new products in the aviation marketplace! I wish you the best of luck 
>on your continued foolishness!
>
>Dm Rob
>
>
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>From: "J.P. Brooks" <jp211 at comcast.net>
>To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>Subject: Re: REFLECTOR: Engine Selection
>Date: Wed, 16 Jun 2004 21:55:17 +0000
>Content-Type: Multipart/mixed;
>         boundary="NextPart_Webmail_9m3u9jl4l_27510_1087483481_1"
>
>
>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: <mailto:djroyer at earthlink.net>Donald Royer
>>To: <mailto:reflector at tvbf.org>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: <mailto:doug.holub at comcast.net>Douglas Holub
>>To: <mailto:reflector at tvbf.org>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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>>_______________________________________________
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>>
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>
>_______________________________________________
>To change your email address, visit 
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