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Old 03-04-2007, 10:37 AM   #1
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What Not To Do :(

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While I have never been in the air, I decided yesterday to take my Thunder Tiger OBL40 out and practice taxing. My wife was holding the plane while I was starting it with the trusted chicken stick, ( don't want any finger damage yah know ). Well all went smooth, after about four flips of the prop she was running. I cut the gas back and proceeded to take the Glow Starter off and womp, stuck my finger right in the prop. You know a person can get a nasty cut from those things and I did.

But one lesson was learned from this so I thought I would pass it on, never ever try taking the Glow Starter off from the front of the plane. I have decided to move my glow plug to a safer location on the plane to avoid any further mishaps like this.

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Old 03-04-2007, 10:59 AM   #2
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When you've done it once, you will not likely do it again.
ANY prop will give you anything from a nasty cut to amputation!
Hope you heal soon and BE CAREFUL!
Cheers, Dave.
Dave Collis
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Old 03-04-2007, 11:02 AM   #3
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As you have found out you should always be aware of the prop. After I start a plane I always move around to behind the engine to remove the glow igniter and to do any needle adjustments. Don't rev the engine until you are behind it also because it could jump forward if not held properly and take another finger with it. If someone is holding the plane , make sure they are not in the path of the prop because if it comes off the engine it will be a flying knife.
Rob Weiss

Flying Tigers RC Club

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Old 03-04-2007, 12:53 PM   #4
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I've found that painting the prop tips white helps too. Makes it easier to visualize the prop arc. I think most people in this hobby have had this experience at least once. "Once bitten, twice shy"! Leave that glow heater on until you get behind the airplane.
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Old 03-04-2007, 01:01 PM   #5
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That finger is going to throb , for a while . I ve done it once also , and I don t want to do it again . Thats why I approch the plane from the rear when takeing off the glow clip . And I never reach around , this is what they taught me at the club ( Instructers )

Hope you feel better soon

Michel ( Mike )
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Old 03-04-2007, 01:17 PM   #6
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Learnt My Lesson

Well I knew even before I did it that it was a stupid thing to do. I always take the Glow Starter off from behind but just thought for a second that one time and being careful should be alright. NOT ...

On a note about throbbing, you are right ... It did not hurt when it happen, it did did not hurt after, it only started to hurt when the wife made me go to the emergency department and the doctor started poking at it and putting allot of pressure to it to get the bleeding to stop. Even had to go back a second time because it open up again and they had to redo it and splint it so I could not move it.

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Old 03-04-2007, 01:52 PM   #7
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You don't have a snow blower do you?

Four stroke engines have a nasty kickback, I flip to make sure it's not flooded, then start with the electric start.

Yes I've cut a finger as well, just not emergency room bad.
desiderantes meliorem patriam
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Old 03-04-2007, 02:11 PM   #8
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Everything I learned about safety came from my Zone Director

The lessons that I had from Bob Hudson, the SE Zone Director, have stuck with me and it's been over twenty years.

Radio and starter wires are to my right, with the throttle stick in the low position and the trim centered (low idle). Left hand is on top of the plane witha firm grip to prevent any jump-aheads when I fire up the plane (right hand has starter).

Make large and deliberate motions when anywhere near the prop, and make sure that nothing can get flipped or blown into the prop (starter and glow driver wires especially.)

Even today, when I reach over the prop to disconnect the glow driver, my position is in front of the prop and a reach backwards and then up and over the line of the prop, pop the connector off and toss it back towards the tail of the airplane.

Right hand repeats arc in the reverse direction. Left hand never releases its grip.

This is even if the plane is restrained.

Make sure that throttle is still in the low positon and pick up the radio .

Shift radio to left hand with left thumb mashin against the base of the throttle stick to ensure the low position is maintained. Stand up, shift around and now kneel behind wing of plane while right hand now has a firm grip back near the tail feathers.

Left hand is used to make throttle checks (throttle up and down) as well as checking the fuel draw at full throttle in a vertical line (left hand is now holding wing). Needle value adjustments are made with the left hand fingertips.

If idle screw needs adjustment, motor gets shut down and then adjusted. Follow regular restart process unless someone else is handy to work the electric starter for you.

Repeast process until engine runs smoothly and without sagging, still putting out smoke at full throttle. (Engine leans out even further in the air as the prop unloads with forward motion.)

You've hopefully learned the most important safety lesson without serious injury.

The prop is a meat slicer at best (grinder at worst). Wooden props are bad enough but the fibreglass and CF-empregnated props are even more so (more structural strength means it takes more force to break them.)
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Old 03-04-2007, 02:20 PM   #9
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Sorry to hear that, now that you know how it feels you will never likely do it again , Other tip i can suggest is to paint the tips of props with bright color like ie: Yellow, Dayglo Red or bright Orange, even if you tend to not give attention (brainF**t) but your instincts will show you ring around the running prop and you will never put your finger through this circle arc....
Do sign the petiton. www.canadiansuperconnie.org We could Save our Connie CF-TGE, We still have chance, Once gone we will lose our History and Heritage forever....
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Old 03-04-2007, 03:56 PM   #10
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Sorry you got hurt but you learned one of the cardinal rules. Never reach over the prop arc. I have done it a few times over the years when having a brainf**t. Everyone has done it or will at one point in the hobby if you are in it for a few years.
My worst one was with carbon fiber on a FAI ST40 r/int/exh on startup. No throttle and after warming it up for a few seconds reached across and got knicked. At 20k there was a lot of slices. I taped it closed and when I got to emerg. the doc cleaned it and retaped. Not enough to stich. Was very tender for quite awhile and if your a mechanic like I was it always got banged.
Take care when enjoying the hobby as you never know when you will get bit.
John Davidson
Keep the shiny side up and the wheels down
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