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HelicopterMain Discussion › Special dumb-ass award?
05-03-2005 09:09 PM  12 years agoPost 1
dnp

rrNovice

DFW Texas

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Here's a real dumb-ass for the amusement of all;
Brand new assembled Tempest with C-Spec and for the first time ever a GV-1 is installed....in garage safely strapped down for initial blade track and idle adjustment, started right up on 24V and instantly went to full throttle!!
Had a good hold on head of course, as always! It's absolute danger time....I gotta shut this thing down NOW...(am strongly smelling clutch)....How'm I gonna do that .....can't reach fuel line....canopy is on....from reading RR I reach over and pinch muffler rubber extension closed...engine stops (THANKS TO WHOEVER IT WAS THAT POSTED THAT SHUT-DOWN METHOD ON RR!!!!!!). Damn! I know I set-up that GV-1 properly, what the hell did I overlook? Into house to retrieve Governor manual....coming back out I think, wait a minute here, could it be, is it, that I dumb-assed this operation!? Turn the 9Z back on to see if I did..... YES,YES, I DID dumb-ass it....The Xmtr is still selected to .70 Extreme! Not to the Tempest C-Spec! The throttle servo is reversed between the two helis...all the other servos work the same way so when I waggled the sticks before start to ensure radio function all looked ok except that I did'nt look at the throttle because it was covered by the canopy. I believe that I am most likely the only person who has ever dumb-assed in this particular fashion.

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05-03-2005 09:14 PM  12 years agoPost 2
Jasper7

rrKey Veteran

Birmingham , UK

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Nope

Done it on my TRex, copied over the EVO setting, checked it all. But forgot about the Throttle is Reversed on the EVO.

New gears, ok cheap for me to repair. But dumb.

Oh, burnt clutch on EVO too, full throttle.

Live and Learn, live and Learn

Steve

Jasper 7
T-Rex 700N
T-Rex 600N
T-Rex 450Pro

Citizen Number: 00212

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05-03-2005 09:29 PM  12 years agoPost 3
Gary

rrVeteran

Crosby, Texas

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No, you're not the only one. I've started a Tempest in idle-up before. Same damn result as what you did. Everybody does it once I guess.

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05-03-2005 09:41 PM  12 years agoPost 4
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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Everybody does it once I guess.
TWICE

i have to do it once to each heli, hahaha

Shawn
Team Leisure-Tech
Team HelixRC

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05-03-2005 09:51 PM  12 years agoPost 5
53mech

rrApprentice

Lusby, MD

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Did the same thing with a friends Venture.
Boy, did that get our attention

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05-03-2005 09:52 PM  12 years agoPost 6
jb_turner

rrElite Veteran

USA

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Strapping a heli down is a a very bad idea. Please get some local help!

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05-03-2005 09:53 PM  12 years agoPost 7
pilotError

rrKey Veteran

Long Island, NY

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Award

I have to agree, strapping the heli down in the garage was the only thing that stood out there.

I think you'll find a lot of folks have screwed up with the wrong heli on the transmitter...

Good Judgement comes from Experience. Great Judgement comes from Bad Experience.

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05-03-2005 10:05 PM  12 years agoPost 8
brooksnb

rrKey Veteran

Sussex , New Brunswick , Canada

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fill in profile please dnp

It helps others to help you....

Never, under any circumstances, take a sleeping pill and a laxative on the same night.... Dennis

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05-04-2005 12:06 AM  12 years agoPost 9
Phranque

rrApprentice

Wherever you go, there you are.

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I always double check my throttle-hold before I put the starter in, so I haven't had a table-top runaway. But, I have (on more than one occasion) left it in idle1 or 2 for that fun surprise........... when the throttle hold is flipped off with the stick at full negative, instead of that expected bump in engine idle......

Flying a heli is like seeing the Matrix, it is a mind bending experience.

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05-04-2005 12:10 AM  12 years agoPost 10
Ted Toth

rrElite Veteran

Myrtle Beach S.C.

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dnp we all have done dumb and stupid stuff in our life this
is how most of us learn just most don't have the brass to
admit it in a open forum
hope you learned something I know I will re-check my stuff now

.

You don't stop laughing because you grow old, you grow old because you stopped laughing.

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05-04-2005 12:37 AM  12 years agoPost 11
Wireless

rrApprentice

Vaud, Switzerland

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My Tx warns if you at startup if you are in any other flight mode than 'normal' with continuous beeping. It also does it if your throttle is at anything but idle. I am convinced it's stopped me doing numptie full-bore starts before now.

Nerv mind dnp - at least you held it and it didn't bite a lump off you.

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05-04-2005 01:25 AM  12 years agoPost 12
Jeff H

rrKey Veteran

Cincinnati, OH

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Starting the heli in the wrong model only gets you the absent minded award, its one that I get at least once a year.


Now strapping down your heli... that is another matter entirely and elevates you to a much more prestigious award, if your heli lives to tell about it.


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05-04-2005 01:42 AM  12 years agoPost 13
Ted Toth

rrElite Veteran

Myrtle Beach S.C.

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My Tx warns if you at startup if you are in any other flight mode than 'normal' with continuous beeping.
it that only if the switch is wrong when you turn the Tx on?
my is that way but after you turn it on and accidentally bump
a switch = no warning I know I have replaced many clutch liners

.

You don't stop laughing because you grow old, you grow old because you stopped laughing.

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05-04-2005 01:43 AM  12 years agoPost 14
rcheliflyer

rrKey Veteran

calif., usa

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Special dumb-ass award?
Oh, I clicked on this post to claim my award

Everyone makes mistakes, I know I do, hopefully we learn
from them and try not to repeat them or make too many new ones.

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05-04-2005 02:09 AM  12 years agoPost 15
dnp

rrNovice

DFW Texas

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Thanks to all who so far have bothered to reply.....I now have a question to pose to all who may be interested,concerning my particular Dumb-Ass;
Why is it a bad idea to strap down securely one of our model helis for initial blade tracking and idle settings? If I had not had the Tempest strapped down but was instead on the ground kneeling while starting it while securely holding the head, the fuse would have violently whipped around to the left (anti-rotation direction) and probably the tail rotor would have become involved with my lower leg. As it was it was strapped down to one of those wooden flying boxes with fold-down legs, which with all equipment aboard weighs about 50 pounds...far beyond the capability of any of my helis to move. Please let me restate to all interested that My Bad, (in my opinion, of course), was having the Xmttr selected for a different heli altogether. For our little models which are really quite stiff compared to full size helis, I just don't understand what the problem is for these initial calibrations. The videos of a CH-46 shaking off its tail while tied down are awesome, but how does that apply to our relatively much,much stiffer model helis? Of course some folks say its bad...bad...but"exactly" why?Any answer is much appreciated, including any from any Engineers who may wish to answer.

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05-04-2005 02:46 AM  12 years agoPost 16
rcnuts

rrVeteran

Millersville, Penna

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There are rocket scientists out there who can explain it better than I can. It has to do with vibrations, and the way the mechanics are loaded on the ground vs in flight.
Anyway dude, i had a devastating hot start too. I was having problems maintaining headspeed with a gasser. I kept fiddling around with the GV-1, to no avail. Then I really screwed up. I inadvertantly plugged the servo lead into the mixture port on the GV-1. Hell, they are right next to each other. Well, thank goodness a buddy was holding the head when I started than monster, cause it went full bore. I ripped the gas line off the carb, but it took many seconds before it shut down. Damage-clutch, clutchbell, clutch bearings, other bearings, etc. Was a real pain in the a$$ getting that heli back together. Ill bet you (or I) wont make that mistake again! HAW!!
Harris,

Hooligan, at large

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05-04-2005 05:00 AM  12 years agoPost 17
Billy Zimmerman

rrKey Veteran

Rainier Oregon

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Man that sucks! Luckily for me my radio (Hitec eclipse 7) beeps at you if the idle up or hold switches are switched on and wont let you get into your normal screens until you switch the switches back to off. I think the Airtronics RD6000-8000 also has this feature, not sure about the other radios tho, I also double check that my throttle linkage has the motor to idle before I put my glow igniter on. Sure is no substitute tho for selecting the wrong model I have done that before but somehow caught it before I got it started. I hope you are able to get it in the air soon!

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05-04-2005 05:09 AM  12 years agoPost 18
Phranque

rrApprentice

Wherever you go, there you are.

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Why is it a bad idea to strap down securely one of our model helis for initial blade tracking and idle settings?
OK, I'm not a rocket scientist, but here's the way I understand it. Basically, if a helicopter is strapped down, it can begin to build up a harmonic vibration which can perpetuate itself, and pretty much cause your heli to shake itself to pieces.

The best way to track your blades is placing a piece of color tape, or film, on the tip of one blade, and then hover it. Use a second person to look at the blades while you concentrate on hovering (or vise-versa). Determine if your colored blade is high or low, and then make the appropriate adjustment after landing. The same pretty much goes for tuning as well. The best tuning determinations are made from flight, not from being strapped down.

Flying a heli is like seeing the Matrix, it is a mind bending experience.

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05-04-2005 05:22 AM  12 years agoPost 19
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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The best way to track your blades is placing a piece of color tape, or film, on the tip of one blade
Not meaning to be a bugger or nothin...but i believe your suppsoed to use a piece of 'colored tape or film' on both blades as to not upset the balance, just have to make sure they are different colors is all.

i used to use magic markers for tracking, very light and can be removed when your done.

I also find that using a pitch gauge very carefully can get you pretty good tracking, or atleast with my experience....

Shawn
Team Leisure-Tech
Team HelixRC

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05-04-2005 06:29 AM  12 years agoPost 20
Rogue123

rrKey Veteran

Phoenix AZ

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um mark the blade grip no need to use tracking tape. Hover it land and adjust in or out. Bring back to a hover if it gets worst. Go the other way. No need to mark blades.

Never stap down , I have done my share of Hot starts

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HelicopterMain Discussion › Special dumb-ass award?
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