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  #1  
Old 04-07-2012, 05:07 PM
Greenley's Avatar
Greenley Greenley is offline
 
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Location: Dowagiac, MI
Posts: 375
Default prep for Deltahawk

Don't laugh, I was just listening to the deltahawk podcast on avweb. I am currently building my rv-10 fuel tanks and wondering what mods might be appropriate to keep the deltahawk option open if a miracle happens and it really comes to market. It looks like a fuel return line is needed and an active vent. I have some ideas on prep for the first but no ideas on the vent. Any thoughts/suggestions for either appreciated.
Bill Greenley
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  #2  
Old 04-07-2012, 07:36 PM
N427EF N427EF is offline
 
Join Date: Oct 2005
Posts: 1,516
Default

Don't know much about the Delta Hawk Diesel but always read about it with great interest.
Making a provision for a return line is a good idea no matter what you are planning at this point. You'll have many more fuel system options with a return line.
I used a fuel drain flange on the inboard tank rib for my fuel return line.
I am not sure why the vent system would need changing.
On a lighter note, you might want to add a little compartment to save extra cash for that Delta Hawk.
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  #3  
Old 04-07-2012, 07:41 PM
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Flybuddy2 Flybuddy2 is offline
 
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I had a Velocity prior to the RV and the delta hawk was a favorite among many builders. Unfortunately some waited for MANY years. Cool concept but don't hold your breath.
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  #4  
Old 04-07-2012, 08:06 PM
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flywithme623 flywithme623 is offline
 
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Location: Somerset VA
Posts: 77
Default Fuel filler cab

You will need a 3" fuel filler cab since the jet nozzle is bigger then the avgas nozzle

I was looking into that too for my -8, if they just would not be so pricy.
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  #5  
Old 04-07-2012, 08:37 PM
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Geico266 Geico266 is offline
 
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Location: Huskerland, USA
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By the time the Delta Hawk is available for production the Back to the Future flux capacitor will be ready for public use also, so make sure you can store banana peels and coffee grounds for in flight refueling.
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Last edited by Geico266 : 04-08-2012 at 06:09 AM.
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  #6  
Old 04-07-2012, 09:21 PM
paul mosher
 
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Default Delta

You could also wait for the Mistral, or that cool V6 that Bombardier was going to produce.
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  #7  
Old 04-08-2012, 06:11 AM
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Geico266 Geico266 is offline
 
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Location: Huskerland, USA
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Rumor has it they put all their eggs into one basket going after the military drone market rather than experimental. The military was not interested because it was not flying, it was not flying because the military was not interested. The old catch 22 syndrome.
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  #8  
Old 04-08-2012, 07:23 AM
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Greenley Greenley is offline
 
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Location: Dowagiac, MI
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I know the eternal promise of something new. I was just thinking, would it make any sense not to attach the rear tank baffle, but stop short of that step and finish the tanks nearer the end. That way they are easy to modify if needed. Would that create problems?
Bill Greenley
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  #9  
Old 04-08-2012, 10:00 AM
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airguy airguy is offline
 
Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,145
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I would dearly love to have a turbodiesel in my 9A, but there just aren't any available on the market at this time (with full horsepower, which excludes the WAM). I did build my fuel system to take advantage of one later if they become a reality in the future. I put a full-flow return line in the tanks that passes through the first two tank ribs and empties into the 3rd bay of the tank, to minimize the amount of foaming that might reach the pickup screen. As opening up the 2" fuel filler to a 3" for Jet-A, I'll just have to open up the baffle and redo it, that will be a minor issue compared to re-engining a flying aircraft.
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Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now.
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  #10  
Old 04-09-2012, 05:36 AM
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pierre smith pierre smith is offline
 
Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
Default Loose props?

An old ex WW II Corsair pilot/flight instructor mentioned to me once that diesels "pound" so hard on each power stroke, that props are easily loosened because of the 20:1 compressions, or higher.

Anyone know if there is any truth to this?

Thanks,
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RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
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Air Tractor 402 PT-6-20 Sold
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