RunRyder - Engine kill switch

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Bergen R/C Helicopters > Engine kill switch - yes or no?

Euqor
Heliman
Location: Balneario Camboriú, SC, Brazil

Do you have kill switch on your Intrepid Gas?

Make sense to have it, as you cannot approach the heli with the main rotor moving ?

This was discussed at lenght at the Club, last week-end.
Would appreciate inputs from you, guys and gals.
Thanks.

________
Wilson
Please visit my web page at: www.roqueaircraft.com.br

05-19-2006 Over year old.

HOMEPAGE

Autoeject
Key Veteran
Location: Ashtabula, OH, USA

I use the throttle cut on my radio to close the throttle completely. The engine quits immediatly at that point. I just figured putting a seperate switch on would add to the possible failure equasion.

Mark Webber
webberaerialimaging.com
Spartan RC Distributor
AIR-NRGi Batteries

05-19-2006 Over year old.

HOMEPAGE

FLAP
Veteran
Location: Michigan

no kill switch.

05-19-2006 Over year old.

AGRAV8
rrProfessor
Location: Mosquito Coast......Houston Texas

no switch

throttle kill on all my gassers

GOOD guy list-39, BAD guy list-0

05-19-2006 Over year old.

Ron Cosby
Senior Heliman
Location: Shreveport, Louisiana

No need for a kill switch when you have a choke lever.

05-19-2006 Over year old.

microDan
Senior Heliman
Location: New Jersey

No kill switch or idle stop screw. The throttle trim kills it.

"Do it like it's the last day of your life"

05-19-2006 Over year old.

andrewp28
Senior Heliman
Location: Toronto, Ontario - Canada

Okay, what if you crash and the throttle jams at full, or the throttle servo fails, or the radio fails? Or you are carrying the beast over to the flying area and a gust of wind (errant cat, miscreant child, devil spawn etc.) blows your transmitter over setting the throttle stick to full. Yes I know wise pilots would avoid such scenario, but haven't we all made mistakes at some point?

I would think a kill switch does no harm, as long as it is wired so that if the kill switch fails due to vibration it does not short ignition.

05-19-2006 Over year old.

microDan
Senior Heliman
Location: New Jersey

If you were using a mechanical switch that had to be shut off by you under the conditions you mentioned you would not be able to get close enough to the heli without chopping off an arm or your head. Oh and if a switch is going to fail it will open or short and kill the ignition, just when you don't want it too as you're 100 feet in the air of course......
Just my thoughts.......

"Do it like it's the last day of your life"

05-19-2006 Over year old.

andrewp28
Senior Heliman
Location: Toronto, Ontario - Canada

I mentioned those scenarios because back in my 30-sized nitro days it happened a couple of times - I don't remember exactly what happened, I may have forgotten to turn the TX on etc., but you are left with a revving-up engine and holding the blades fighting the clutch - if you let go of the blades to reach for the TX - WHAP! Back then I just pulled off the fuel line - but with this gasser the fuel lines are zip-tied on, and harder to pull off then silicon lines. In a crash situation you could use a kill switch if let's say the blades were broken and did not pose a hazard. Anyhow I'm not planning for a crash

and hopefully I've learned my lesson about TX placement. I am however concerned about a kill switch failing in flight, unless I can find something that can be guaranteed to fail open, so maybe the previously-mentioned choke lever is the way to go.

05-19-2006 Over year old.

microDan
Senior Heliman
Location: New Jersey

The bottom line is to keep it simple. Hope for the best and expect the worse.
The gassers will run longer than the nitro birds after the fuel line is pulled off, if you were able to do that. As you said you could approach the heli if the blades were broken off if you were lucky. But they always seem to do a chicken dance and there is usually something dangerous swinging or ready to fly off. Once the damage is done it's done, don't risk life or limb for a few hundred bucks, stand back, laugh and or cry and watch it crash and burn

Yeah right if it was only that easy.....

"Do it like it's the last day of your life"

05-19-2006 Over year old.

Chris Bergen
Key Veteran
Location: location

The question of a kill switch does come up from time to time.

Look at it this way;

IF you have the ability to reach into the helicopter to hit a kill switch, then you can hit the choke lever as well.(Or place your hand over the venturi, if so equipped)

If the heli is doing the funky chicken, best to stay away from it regardless, and there is no way your going to hit any kill switch!!

You would be correct in that pulling a fuel line does not act quick enough, the engine can continue to run for quite a few seconds afterwards. Again, just use the choke or palce your hand over the venturi, the engine stops immediately.

Chris Bergen

05-19-2006 Over year old.

Euqor
Heliman
Location: Balneario Camboriú, SC, Brazil

Thank you guys, from your responses.
Printed the post to show to my friends at the Club, tomorrow.
Hope you all have a great week-end.

________
Wilson
Please visit my web page at: www.roqueaircraft.com.br

05-20-2006 Over year old.

HOMEPAGE

microDan
Senior Heliman
Location: New Jersey

Just one other thing. Doesn't the AMA require a kill switch for their events? I still don't run a kill switch. But isn't it true an AMA tech inspection says you need a kill switch. I have never flown at an AMA sanctioned event, but I was told you must have it. Or is this overlooked on the gassers?

"Do it like it's the last day of your life"

05-31-2006 Over year old.

Chris Bergen
Key Veteran
Location: location

I'll have to check to be sure, but I believe that applies to airplanes, for the same reasons, if you can't get to the engine due to the flopping blades, a kill switch will do you NO GOOD! If you can reach the engine, it's just as easy to operate the choke, or place your hand over the venturi.

A kill switch can fail, in either way, open or closed, whereas the choke or blocking the venturi is GUARANTEED to kill it.

Chris Bergen

05-31-2006 Over year old.

Chavalo
Senior Heliman
Location: Mexico City

In case of a crash, you can use a 12 gauge kill switch too

Also guaranteed to kill it

06-02-2006 Over year old.

Autoeject
Key Veteran
Location: Ashtabula, OH, USA

Chavalo

In the event of a crash, please don't help me with my heli'd 'kill' switch!

Mark Webber
webberaerialimaging.com
Spartan RC Distributor
AIR-NRGi Batteries

06-02-2006 Over year old.

HOMEPAGE

Pistol_Pete
Elite Veteran
Location: Tampa Bay non-Buccaneer

I dont have a gasser (yet) but do come to this area to read and learn from you guys...thanks.

Here is my share on the following comment...

Quote
Or you are carrying the beast over to the flying area and a gust of wind (errant cat, miscreant child, devil spawn etc.) blows your transmitter over setting the throttle stick to full.

I use a rubber band for such just in case...from the carrying handle down under Tx to the front over stick.

<><>...the lunatic is in my head...<><>

06-03-2006 Over year old.

HOMEPAGE

Autoeject
Key Veteran
Location: Ashtabula, OH, USA

I use the throttle hold for that very same reason,

Mark Webber
webberaerialimaging.com
Spartan RC Distributor
AIR-NRGi Batteries

06-03-2006 Over year old.

HOMEPAGE

TVAILLANCOURT
Senior Heliman
Location: Edmonton AB

kill switch

I'm going to put a remote electronic Kill switch on mine.You can kill the engine with a switch on your TX.
Just in case lets say the throttle servo fails and the throttle is jammed at 3/4.You either have to fly like mad for 40 minutes until you run out of fuel or line up for an auto and kill it with your TX.

www dot 42-percent-products.com/gas-accessories.htm

cheap insurance an light too.

04-22-2008 05:32 AM

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Bergen R/C Helicopters > Engine kill switch - yes or no?

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