REFLECTOR: Deltahawk engine

Steven Oakley steven-oakley at comcast.net
Wed Oct 5 09:50:15 CDT 2005 

Hi,

My kit is due for shipping sometime soon, so I too am far to far away from
these decisions, however I have ordered the large mouthed filler caps for
the Fuel tanks (Jet-A nozzles are a larger dia).

My other options are probably a superior 360 XP turbo (I am getting a SE
FG).

My reasoning at the moment are:

Home base altitude 5000MSL, 14K mountain peaks west of me, so the
performance of the DH or Superior 360 XP turbo would be of benefit as on the
ground I am half way towards the service ceiling of normally aspirated or
injection engines and in the summer DA raise's my field elevation to 9-10K.

Whatever the choice it's a long way off, but I have planned (fuel caps) to
keep all options open.

Steve.  

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Grigore Rosu
Sent: Wednesday, October 05, 2005 5:28 AM
To: Velocity Aircraft Owners and Builders list
Subject: RE: REFLECTOR: Deltahawk engine

Hoop,

Yes, those are the reasons for which I also decided upon a DH engine. 
Additionally, I intend to eventually return to Europe (I'm currently in the
US, but I'm originaly from Romania), where the price of 100LL is prohibitive
($9 per galon!)

It is a pitty that we do not have more evaluation data regarding the DH
engines, especially data comming from a different company or customer.  It
will probably happen soon.  I saw a DH180 at the Velocity center, which will
go soon in a Velocity UAV; hopefully Velocity will provide us with some
insightful feedback once they do it.

Grigore

On Tue, 4 Oct 2005, Phil Hooper wrote:

> Grigore, I'll respond too lately...I'm shamed for waiting soooo long.  
> I too am interested in the Delta Hawk, building an XL RG.  I know it 
> is way too early for me as well.  The only issues to consider that I 
> can see are the oil cooler, reinforcements along the firewall for 
> engine mounts, and the NACA scoops.  You have plenty of time!!!  I'm 
> particularly interested in the ~300hp version.  They say they will 
> make it by adding two more cylinders to the basic design, and claim 
> they are about 12 months away.  My biggest concern is to not be the 
> beta tester.  Greg is right that several are watching the DeltaH.  
> With the price of 100 spiking, it seems more and more attractive.  
> What I really like is the simplicity, no Fadec, mixture, and full 
> power to 18k. I'd just like to see the platform proven over a long period
of time.  Let's keep one another posted if we hear any developments.
>
> Hoop
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] 
> On Behalf Of Greg Poole
> Sent: Tuesday, October 04, 2005 6:36 PM
> To: 'Velocity Aircraft Owners and Builders list'
> Subject: RE: REFLECTOR: Deltahawk engine
>
> Hi & welcome to the fold Grigore,
>
> Had not noticed that nobody had replied to you so....I amongst many 
> others on this list also remain interested in the DeltaHawk (the 
> inverted unit with the intercooler is of real interest).
>
> I think you were spot on with your comment that " It may be a bit too 
> early for me to worry about the engine now" .You can certainly use 
> that (the wait) to your advantage for the engine and avionics are 
> really decisions for very late in the total build (my good mate Dave 
> Black keeps hammering me on this one and the message has got through!).
>
>> From experience, Deltahawk will get the message out when the time is 
>> ripe
> so
> there is little use presupposing or second guessing anything.
>
>
> Greg in Sydney
> STd RG E
>
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] 
> On Behalf Of Grigore Rosu
> Sent: Saturday, 1 October 2005 10:48 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: Deltahawk engine
>
> Hello,
>
> I have just received my kit (SEFG) from Velocity a couple of days ago, 
> now going over the inventory and garage space ... very exciting.  
> Unbelievable how many airplane-unrelated things one can keep in a 
> garage.  The car seems to take a lot of precious space; out with it!
>
> I am still seriously thinking of putting a diesel Deltahawk engine on 
> my airplane.  It may be a bit too early for me to worry about the 
> engine now, but I was wondering whether there were any new 
> developments regarding the DH engines, or whether any of you has already
installed and flight-test
> one.   When I was at Velocity during the head-start program (mid-August),
> they had one DH engine there.  Therefore, I'm assuming that perhaps 
> others may have also received their engine, maybe even tested them.
>
> BTW, Europe's SMA revived and they are slowly entering the US market 
> with their engines.  Unfortunately, their 230HP does not seem to fit 
> well our Velocities (too heavy for Standard, too little power for XL).  
> Besides that, it seems to be very expensive (>$70k with prop) ...
>
> Grigore
>
>
> On Thu, 5 May 2005, Douglas Holub wrote:
>
>> Welcome Grigore!
>>
>> I think that you will find that many on this list are skeptical about 
>> the advantages of the DeltaHawk diesel, but I am not one of them. It 
>> is 35%
> more
>> fuel efficient than the IO-360, plus smoother, quieter, and simpler. 
>> The "A4" versions allow a much more steamlined cowl than the IO-360. 
>> It has single lever power control with no mixture or carb heat and no 
>> complicated FADEC. It represents the most significant advancement in 
>> general aviation power plants in 70 years.
>>
>> I am a little undecided about which model to use in my top-door, FG 
>> Velocity. The Velocity was originally designed for a 160 hp engine, 
>> and it looks like the DH160V4 will push the airplane faster than an 
>> IO-360 does,
> so
>> it is definitely an option.  But for just a little more money and no 
>> additional weight, the DH180V4 would give you a higher cruise speed 
>> or a shorter take off roll with a fixed pitch prop.  I'm probably 
>> going to buy the DH180A4.  For only an additional 15 pounds of weight 
>> and some more
> money
>> you can get the DH200A4. The extra weight comes from the intercooler.  
>> I think it is probably overkill, and I like to keep things lighter 
>> and simpler. But an extra 20 hp for only 15 lbs is a pretty good deal.
>>
>> Doug Holub
>> top door, FG, 70% done, I'm going to complete the airframe in 2006 or 
>> die trying
>> ----- Original Message -----
>> From: "Grigore Rosu" <grosu at cs.uiuc.edu>
>> To: <reflector at tvbf.org>
>> Sent: Thursday, May 05, 2005 10:01 AM
>> Subject: REFLECTOR: Deltahawk engine
>>
>>
>>> I am perhaps the latest member of the list (just received the 
>>> confirmation of my order for a Velocity SE/FG a few days ago), so 
>>> please let me start with a warm hello to all the enthusiastic Velocity
Builders!
>>>
>>> I am living and flying in Illinois (Champaign-Urbana area), but I am 
>>> originally from Romania.  I intend to move back to Europe in a few 
>>> years, so I am 99% decided to go for a Deltahawk engine (as you may 
>>> all know, in Europe the price of AVGAS is prohibitive).  I am also 
>>> very impressed with the latest comparison data between the DH160V4 
>>> engine and the Lycoming IO-360, so it looks like a DH engine may be 
>>> a very good choice even for one flying one's Velocity all the time 
>>> in the USA ... (see http://www.deltahawkengines.com/perfor00.shtml).
>>>
>>> Are there builders on this list who are seriously considering a DH
> engine?
>>>
>>> Can anybody comment a bit on the three possibile DH engines, namely 
>>> the DH160V4, DH180V4, and DH200V4?  According to Deltahawk's data, a 
>>> DH160V4 sounds like just good enough for a Velocity SE/FG.  However, 
>>> a DH180V4 also seems very attractive.  Also, what would the REAL 
>>> difference between the three engines be in the case of a Velocity 
>>> SE/FG (ignoring the
> price)?
>>>
>>> Thank you,
>>> Grigore
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>>
>>
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