REFLECTOR: DH engine vs. Velocity Beauty

Mon Feb 13 12:24:47 CST 2006

Steve,

If altitude is an issue, then you might want to change your search for 
your second choice from an IO-XXX to a *T*IO-XXX which would solve any 
altitude problems you have. ;-)

Richard

Steven Oakley wrote:

>Thanks Richard, looks like the IO-390-X will be a good 2nd choice for me.
>
>Steve, my reason for being interested in the DH is that home elevation is
>5000MSL, and having 100% power for take-off and upto 16K is a real bonus.
>For my SEFG kit I ordered the large fuel caps as an option to allow for
>flexibility. Do you happen to know if the production Deltahawk fitting will
>use the NACA roof ducts or is it still going to use the bottom air scoop? Do
>they have a firewall package available at the moment?
>
>I am sure a lot of these questions will have been ironed out by the time I
>come to make a firm engine choice, but I plan on keeping all options open
>from the start.
>
>Steve.
> 
>
>-----Original Message-----
>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>Behalf Of wooden at alltel.net
>Sent: Monday, February 13, 2006 6:18 AM
>To: Velocity Aircraft Owners and Builders list; Velocity Aircraft Owners and
>Builders list
>Subject: Re: Re: REFLECTOR: DH engine vs. Velocity Beauty
>
>I have ordered the DH and just got off the phone with their office.  They
>originally indicated that my inverted engine would be delivered in February,
>but now they have put off the delivery date until May at the earliest.  I
>believe it is the best engine for the Velocity, and I am willing to wait
>until they get it right.
>
>Steve Wooden
>  
>
>>From: "Richard J. Gentil" <richard at naples-air-center.com>
>>Date: 2006/02/13 Mon AM 07:07:15 CST
>>To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
>>Subject: Re: REFLECTOR: DH engine vs. Velocity Beauty
>>
>>Steve,
>>
>>I was looking at the 200hp DH engine but I ended up opting for the 
>>IO-390-X with the Klaus' LSE Dual Plasma III CDI with Hall Effect Module.
>>
>>My two reasons where:
>>
>>   1. Proven design with a long history.
>>   2. A couple of hundred hours less construction time vs the DH.
>>
>>Richard
>>
>>Steven Oakley wrote:
>>
>>    
>>
>>>I am also interested in a DH engine, it does occur to me that the 
>>>model of velocity they are using for testing has no NACA scoops on 
>>>the top and was possibly an older velocity that had a different 
>>>Engine airflow system. I am hoping that with the proposed "velocity 
>>>produced firewall kit" that a way of using the NACA scoops on the top 
>>>of the fuselage would be found that would give sufficient cooling, 
>>>also that engine alternatives will be available to reduce the need for
>>>      
>>>
>cowl mods.
>  
>
>>>Anyhow I hope they have thought about this, bat as an alternative I 
>>>could go for the superior XP360 or the IO-390X or even something 
>>>else, who knows what will hit the streets in the next 3 or so years.
>>>
>>>Steve.  
>>>
>>>-----Original Message-----
>>>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] 
>>>On Behalf Of Keith Hallsten
>>>Sent: Sunday, February 12, 2006 9:49 PM
>>>To: 'Velocity Aircraft Owners and Builders list'
>>>Subject: RE: REFLECTOR: DH engine vs. Velocity Beauty
>>>
>>>The DeltaHawk "A"-series or "inverted V" will fit in the standard 
>>>cowl designed for an IO-360.  That will take care of the top cowl
>>>      
>>>
>modification.
>  
>
>>>However, it is not yet available.  In all likelihood, this will be an 
>>>option by the time you need an engine.
>>>
>>>The consideration of the cooling scoops is a tougher problem.  It's 
>>>in the very nature of compression-ignition engines that they run 
>>>hotter and have more significant cooling requirements.  See, for 
>>>example, the air intake for the C-182 STC installation of the SMA
>>>      
>>>
>SR305-230 turbo-diesel.  It's HUGE.
>  
>
>>>>From what I know, you will need a big scoop to keep a diesel happy.  
>>> 
>>>
>>>      
>>>
>>>>(The
>>>>   
>>>>
>>>>        
>>>>
>>>original SMA was liquidated last year after losing $millions$ trying 
>>>to solve the technical and marketing problems of putting their 
>>>turbo-diesel into planes.  The engine is coming back to market under 
>>>SAFRAN Group, see www.smaengines.com.  So far, it looks like 
>>>DeltaHawk is having better luck!)
>>>
>>>Keith Hallsten
>>>
>>>
>>>
>>>
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>>> 
>>>
>>>      
>>>
>>    
>>
>
>
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>
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