REFLECTOR: Engine Selection

[Donald Royer]

We had to do what amounted to a bottom overhaul on my engine when a propeller governor disintegrated after ten hours of service and got enough metal into the engine to take out all of the bottom end bearings. In the process of disassembling and reassembling the engine I got to see the fit and finish of the internal parts of the engine. I was not impressed.

Don

----- Original Message ----- 
From: John Dibble 
To: djroyer at earthlink.net;Velocity Aircraft Owners and Builders list
Sent: 6/22/2004 1:00:45 PM 
Subject: Re: REFLECTOR: Engine Selection


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 

  



_______________________________________________ 
To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector 
Visit the gallery!  www.tvbf.org/gallery 
user:pw = tvbf:jamaicangoose 
Check new archives: www.tvbf.org/pipermail 
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html 
_______________________________________________ 
To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector 
Visit the gallery!  www.tvbf.org/gallery 
user:pw = tvbf:jamaicangoose 
Ch! eck new archives: www.tvbf.org/pipermail 
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
_______________________________________________
To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.tvbf.org/mailman/private/reflector/attachments/20040622/8cb7604b/attachment.htm