Rand Robinson KR-1 Crashable?
Hello All, My name is Harley and I am 15 years old and i am interested in building a KR-1 From Plans anyone owned one?
I have heard they are not the best flying airplanes but they seem to be a pretty good bang for the buck.....
There have been 2 crashes at my local airport including one dumb*** performing a high speed taxi test with no wings, the airplane
thrown aloft and smashed into the ground inverted... I am taking lessons with a former Alaska Airlines/USAF pilot who has 28000
Hours and we are flying his RV-7..... so the point of me telling anyone listening that is so that they are aware that i have high performance
airplane expierience..... So anyone who wants to help me decide on an airplane, give me your ideas..... THANK YOU SOOOOOOOO MUCH
:D
KR-1 / KR-2 Crash Fatalities - TOO COMMON
Quote:
Originally Posted by
Harley Dickinson
Hello All, My name is Harley and I am 15 years old and i am interested in building a KR-1 From Plans anyone owned one?
I have heard they are not the best flying airplanes but they seem to be a pretty good bang for the buck.....
... I am taking lessons with a former Alaska Airlines/USAF pilot who has 28000
Hours and we are flying his RV-7..... so the point of me telling anyone listening that is so that they are aware that i have high performance airplane expierience.....
The KR does, theoretically (and perhaps too literally) give you a lot of "BANG" for your buck. That "bang" could be the sound of impact.
Compared to you, I have high-performance stick time in bigger/hotter stuff than an RV-7. But, though tempted, I'm not eager to fly a KR. Like the BD-5, it's a seductive little hot-rod that makes you think you can zoom away for pennies, joyously into the wild blue yonder, without a care. And, like the BD-5, several people have died in them.
While maybe one out of 20 or 30 or so sets of KR plans actually turns into a real flying plane, those 2,000 or more flown KRs have some blood in their history, according to the Aviation Safety Database of the Aviation Safety Network (a service of the Flight Safety Foundation), there have been:
KR-1 - 26 crashes (approx. 11 fatal), http://aviation-safety.net/wikibase/...ype=KR1&page=1
KR-2 - 111 crashes (approx. 57 fatal). http://aviation-safety.net/wikibase/...ype=KR2&page=1
But that's probably not the whole story. FSF data probably groups by manufacturer's name (in this case: "Rand Robinson"), but the FAA registration of homebuilts commonly uses (at least partly) the name of the builder in the "Manufacturer" name. This can result in official accident data not disclosing all the accidents associated with a type of homebuilt, at least not grouped under one readily identifiable name. Add in variations of the model name (e.g.: "KR-1" or "KR1" or "KR 1"), and you could get further scattering of the data.
The NTSB Aviation Database ( http://ntsb.gov/_layouts/ntsb.aviation/index.aspx ) reports:
KR-1 - 30 crashes (8 fatal) -
http://ntsb.gov/_layouts/ntsb.aviati...0-a0c42f54954f
KR-2 - 126 crashes (40 fatal) -
http://ntsb.gov/_layouts/ntsb.aviati...6-33529bcc41f4
KR-2S - 4 crashes (1 fatal) -
http://ntsb.gov/_layouts/ntsb.aviati...6-33529bcc41f4
Again, I doubt that's the whole story in the U.S., let alone abroad. But reading the accident reports could be very educational about KR issues.
SOME THINGS TO WATCH FOR on the KR PLANES:
Choose your engine as if your lifle depends on it; with the KR, it apparently does.
According to the FSF report on one of the KR-2 crashes, the builder had used a certified aircraft engine which was bigger than the Corvair engine that the designer had spin-tested the KR-2 with. The homebuilder decided to spin-test his own KR with the bigger engine (that the plans apparently said was OK). Not good. The plane never got out of the spin, and that was the end. The FSF report seems to suggest that the KR plans supplier / designer just shrugged it off, saying he hadn't spin-tested with that engine, only the smaller one.
Remember that the KR is a TINY airplane with short-coupled controls, and is reputedly twitchy in pitch response (longer body KR-2S adds 16" or so, possibly calming the twitch a bit). That's a common complaint about micro airplanes (like the BD-5). See KR enthusiast Mark Langford's "KR2S Opinions" at http://www.n56ml.com/kopinion.html
The stubby, pitch-twitchy KR may have a narrower safe CG range than the plans suggest. See KR enthusiast Mark Langford's "KR2S Opinions" at http://www.n56ml.com/kopinion.html
The KR puts you close to the ground (and its obstacles) with less time for you to respond to any problem while zooming along (or just above) the surface. And the KR offers little-to-nothing between you and the dirt to crush, absorb and soften impacts. (Compare that to a Cessna 150, or any fixed-gear, strut-winged Cessna, and you can see why Cessnas have top ratings for safety among gen. av. planes -- and the KR perhaps a bit less.)
CRASHES AREN'T PAINLESS:
Don't comfort yourself with the assumption that a crash will be instantly fatal, and thus painless. Crash fatalities in general aviation very often result from the impact-mangled victims burning to death, slowly. Some stats have suggested fatal fires kill about half of fatality victims.
And while about half of KR crashes are fatal, over 85% are "w/o" (write-offs, which is to say: "totaled"). In such crashes, when "survived," pilots (and passengers, if any) are commonly severely injured and/or burned, often with resulting severe and permanent disabilty and/or disfigurement.
A first-time project for an inexperienced young pilot probably would be more wisely chosen from among the tamer, more tested, safer planes out there. That, frankly, is true for everyone, but especially for those who have so much to lose, and so little experience dealing with the dangers of flight, and the passions of youth.
No plane is worth dying for.
You can't get any of the joy of flight in a coffin.
Fly safe, fly more.