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View Full Version : Mac+prop=Win, right arm.....lost


scott heger
04-12-2004, 10:30 PM
Last week a new owner of a Benson/Mac powered gyro nearly lost his arm with a prop strike at our airport.
The owner had recently acquired the gyro and had asked me to test fly it for him. I questioned him about his prior experience , and he told me that he had "some" time in helicopters. Further questions revealed that he was a student in helicopters, had 10-15 hours and had no license. I told him to go get some training in a gyro, and after that, I would be willing to balance it, but not fly it, as it had no insurance, a airport requirment. He was quite insistant on flying it without going and getting any more training,, and after spending 45 minutes telling him all the places and reasons to get training, he was not listening. I finally told him that if he really insisted to do it by himself, go to El Mirage where there wasn't much to run into, and to take a safety companion.
Well apparently, he didn't like everything I told him, and went over to the other side of the airport to talk to (yes its him) Dennis Fetters. I was told Dennis also told him(according to a third party) to seek training, and that the Airport(AJO) was a poor place to practice and learn.
I show up to the airport after being gone for two weeks, and 3 people come up to me with "did you here what happened to the other gyro". Well my heart felt heavy, as I felt he had crashed.....but, no. He had hand prop started the Mac alone(witout chocks), and managed, (story varies how) to getting the throttle wound up, and it nearly severed his right arm, leaving skinless hanging flesh, bone and blood everywhere. The gyro continued in a semicircle, puncturing a hanger door and imbedding itself. The picture of his arm injury is so grusome, that I am not going to post it, but you would NEVER hand start another Mac if you saw the damage it did to him. All three paramedic units from the City of Corona responded, along with a Mercy Air helicopter, and transported him to Loma Linda Hospital trama Center. The quick action saved his life, the arm is still in doubt.
I can only wish for his recovery, but his life will be changed forever. To all you newbies, please listen.... get qualified training and instruction. This is a example where the gyro damned near killed the "pilot" and he was no where near getting to a runway yet. Listening to what other experienced people told him, would have saved a immense amount of pain and suffering.

Scott Heger,l Laguna Niguel, Ca SportCopter N86SH

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CLS447
04-13-2004, 04:18 AM
I'm sick just hearing about it.

What was Dennis Fetters doing there?

StanFoster
04-13-2004, 05:13 AM
Starting that Mac motor always concerned me....hope the guy turns out ok.

Speaking of Dennis Fetters...when I had my Air Command on e-bay last year..he called several times wanting to buy it real bad.

Screw
04-13-2004, 08:02 AM
Good Post Scott and point well taken. I hope the guy turns out ok. That is a tough lesson.

John-

rehler
04-13-2004, 08:24 AM
Please up date us on the famous Dennis Fetters. The last I heard was that he changed his name, became a Muslim, Married a sheik's daughter and moved to the middle east. Any of this true? Is he now in California?

gyromike
04-13-2004, 08:33 AM
When hand-starting any aircraft engine, it's important to have the machine chocked or tied down. I roll mine off the edge of the taxiway near my hangar to start it. At Bensen Days, I tried to find a depression in the ground to roll the mains into. If I couldn't find one, I had someone hold the noseboom for me.

For a Mac-powered Bensen, I stand with both feet in front of the left axle, and my right leg against the axle, and my left hand on the mast. The throttle is cracked, and when it starts I quickly place my right hand on the mast and the left on the throttle, and lower the RPM's enough to keep it from moving forward, but just high enough to keep it running.

It's important on any aircraft, whether a Cub or a Bensen, to follow through on your swing. Just like throwing a football or swinging a tennis racket. As you pull through the arc, your hand should be moving down and away as it comes off of the prop. I usually complete my swing by placing my right hand on my left hip.

And if the engine is hard to start and you get a little tired or winded...STOP. Take a break. If you get tired or frustrated, you get sloppy. Find the problem and correct it. After you are rested, try again.

With right setting on the carb, and a hot ignition (like Rick's CDI), it should start with the throttle barely cracked and not try to run you over.

And yes, by all means get instruction. It sounds like this guy was in for trouble even if he didn't get his hand caught in the prop.

Rick Whittridge
04-13-2004, 10:43 AM
Scott, I talk to alot of guys about the Mac on the phone, can you tell me who this guy is ? :confused:

Rick Whittridge
04-13-2004, 11:10 AM
Mike, You are right about chocking the wheels in some way to prevent rolling away. What I have done is put a hyd line lock on my main wheels.This works great on the Hyd brakes that I sell. I just push on the brake pedal, hold the line lock in & release the pedal. This locks the brakes until you get in the seat,strap in & when your ready to go just touch the pedal & it releases the brakes. It also works good when I prerotate. When the Mac is timed & tuned right you only need to barely crack the throttle after priming the engine. Your right with my C.D.I. it will idle when started without running over yourself! :)

barnstorm2
04-13-2004, 11:40 AM
I agree with Mike. This sickening as it is may be a hard-won blessing in disquise.

I am assuming that this fellow had intentions or would have had intentions of taxiing or flying this craft without instruction. That would have created another gyro flying accident that likely would have been fatal maybe even to others.

robertstodaro
04-13-2004, 03:22 PM
ALWAYS START YOUR ENGINE WITH THE MAG SWITCH OFF!!!!

Okay! Do I Have your attention?

Run a parallel mag switch up the mast to where your hand grips when you prop the engine.

This " MAST" switch will be a SPRING LOADED OFF SWITCH.

With the NORMAL MAG switch off and the momentary MAST switch held to the ON position, start the engine.

If anything goes wrong, release the mast swithch and the engine dies.

If everything goes right, switch hands and turn the "normal mag" switch on.

or learn the hard way, ---------------------------------like me.

Thanks to Ken Wallis for the idea!

scott heger
04-13-2004, 10:09 PM
Ken, unless Iraq has annexed Riverside County (second largest county in the U.S.), Dennis Fetters is here in Southern California. I have yet to meet him, he keeps a low profile at the Corona Airport(KAJO). He is on the other side of the Airport, and I just go there to fly once a week or so, and have not taken the time to find or meet him. He is still active with gyros I here, and I'm sure I will meet him at some point.
AS far as someone else mentioned, this ground accident probably prevented a airborne one, maybe fatal. I am sure as I can be that would have happened.

Scott heger, Laguna Niguel, Ca SportCopter N86SH