REFLECTOR: Deltahawk engine

[Scott Baker]

In my opinion there is no "best" 300-hp engine for the Velocity SE ... well, maybe the Rolls 250-B17, but that's a topic for another day.  Those Velocity builders who have "stuffed" a larger IO-540 into their Velocity-173 can better testify to the huge amount of time - numerous airframe modifications - and difficulties dealing with limited space that this type of installation entails.  Having the extra horsepower is nice to have for those who operate from high altitude airports or from grass runways.  For most, the extra work is not worth the cost or effort.
Weight penalty - about 100 pounds when all is said and done using Lycosaurous technology; not sure when considering rotary power.
Cost - about $20K more than an IO-360 (engine and special propeller)
Time to build - add about 200-hours
Raw performance - for some, priceless; for others, not enough to offset the other drawbacks.
My thoughts.
Scott B.

  ----- Original Message ----- 
  From: Joel Smith 
  To: Velocity Aircraft Owners and Builders list 
  Sent: Thursday, May 05, 2005 3:29 PM
  Subject: Re: REFLECTOR: Deltahawk engine


  I am a little curious about the 300 hp engines on the SEs.

  Is there a "best" 300 hp engine for the SE?

  What performances parameters were you trying to achieve (TO distance, climb, speed, etc.)?

  What is the weight penalty?
  What prop do you use?
  Does this require a larger ballast?
  Is the range affected?

  I must me tightly cowled... ? 

  Al Gietzen wrote:

Subject: RE: REFLECTOR: Deltahawk engine

I have 300 horsepower on a SE RG ... and would never consider anything
less.
  

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