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  #11  
Old 01-26-2008, 10:29 AM
flyeyes's Avatar
flyeyes flyeyes is offline
 
Join Date: Jan 2005
Posts: 804
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Quote:
Originally Posted by Naug View Post
As you remember Kelly Landrum damaged his airplane a few month's back. He
writes the following: (snip)The flyspeed went
course pitch. There was not enough time to clean up flaps and
reprogram the Flyspeed all while just barely clearing obstacles. The
wings stalled 50' above trees (snip)
I think I understand this accident, but it seems to be as much a design/setup issue as a pilot error/human factors one.

It seems obvious that the workload was unnecessarily high, which contributed to the pilot error.

I'm bothered though, that this RV couldn't make a go-around even with the flaps down and the prop in coarse pitch. RVs have really sporty power:weight ratios and the flaps just aren't that big.

Fixed-pitch RVs with cruise props are always in "coarse pitch" and they don't have any trouble outclimbing typical Cessnas. This airplane was apparently unable to maintain altitude, much less climb.

Does the Quinti setup have a coarse pitch stop? It seems to me that it was too easy to have the airplane configured in such a way that it wouldn't climb.

I'm reminded of some old Citabrias that had the mixture and carb heat knobs close together and similarly shaped. If a pilot (who shall remain nameless) forgot the carb heat until turning base, and grabbed it quickly while looking over his shoulder at the runway, he might be rewarded with silence. Always a good vocabulary builder...
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  #12  
Old 01-27-2008, 06:34 AM
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pierre smith pierre smith is offline
 
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Location: Louisville, Ga
Posts: 7,840
Default Low power

James, a friend of mine nearby has a 4 cyl Subie in his -7. It's really short-winded. I gave him a BFR in it and we could only manage 162 MPH at 34" and 4800 RPM's/2700 prop RPM's. We figured it might make 130 HP based on his max fuel consumption of 7.2 GPH.

Regards,
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RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
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Louisville, Ga

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