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HomeAircraftHelicopterSafety - RC Helis are not toys › Connecting/Disconnecting battery
10-11-2005 04:33 PM  12 years agoPost 21
playfair

rrKey Veteran

Rochester, NY

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I had a Hacker ESC that had a "normal" switch on the BEC circuit. You still can't leave the battery connected all the time (as the ESC is powered), but to arm and initialize the gyro you flicked the switch.

Though always cautious myself, I've never seen one of the better ESC's "just turn on" when the battery is connected. It would take a pretty precise glitch to go to zero and back up again.


The sky is our canvas

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10-25-2005 05:59 PM  12 years agoPost 22
webbhost

rrKey Veteran

england - Leicester

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some speed controllers have a function so that they will not activate until you put throttle to bottom (so if you or someone else turns on their controller on the same frequency with full throttle the speed control wont become armed until the arm is bought down.

Well it might be all controllers, ive not looked into them much, but the one i have for my hydrofoam has that function

Althrough its not a raptor 30, holding the blades whilst connecting/connecting battery would still help. If anything happens you need a new engine, not 6 stitches

meh

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10-25-2005 06:40 PM  12 years agoPost 23
CACTUSJACK (RIP)

rrApprentice

State of Confusion

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holding the blades whilst connecting/connecting battery would still help.
I don't know how yours is set up, but I would need a 3rd hand to hold the rotor whilst connecting the battery. Deans Ultra connectors are tight as hell.

X5X7 Animum Vestrum Negotium Agatis

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10-25-2005 06:47 PM  12 years agoPost 24
webbhost

rrKey Veteran

england - Leicester

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ok, well maybe rest the tailboom and blade against your leg when you connect, if it moves it can only try going into your leg. and if your leg is close enough to the centre of the heli, its not likely to get past ur leg

meh

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10-27-2005 05:45 AM  12 years agoPost 25
kileak

rrNovice

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with soft start, I think you would have plenty of time to react before the thing flew up into your face. At least mine takes a few seconds to spin up to a speed that could really injure you.

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12-19-2005 10:30 AM  12 years agoPost 26
soupisgoodfood

rrApprentice

New Zealand

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I don't know what most heli and plane ESCs are like, but in my limited experience, their soft starts aren't really that soft. Compared to a good RC car ESC, anyway.

I don't do anything for my Trex other than anticipate the blades spinning ... not sure if I'd be able to catch it in time. Tail boom and blade between the legs sounds like the best solution.

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12-19-2005 10:44 AM  12 years agoPost 27
kev82

rrNovice

Reykjavik, Iceland

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I didn't read the whole post (only first 7 or so)

But why not just put the heli on the side? Then the rotors are "stuck" and you have 2 free hands to work the battery connections.

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12-21-2005 02:40 PM  12 years agoPost 28
Gary Hoorn

rrKey Veteran

Annapolis Maryland USA

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kev82,
Most Helis have a flybar and paddles located 90 degrees to the main blades. Placing the Heli on its side would most likely damage the bird making it either difficult or unsafe to fly. Should it start there is more than enough torque to cause the bird to "chicken dance" potentially causing harm.

An electric Heli of any size will always present a problem should there be a failure in the speed control circuitry. Treating an armed Heli like a loaded gun is your best option!
Gary

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01-20-2006 09:33 AM  12 years agoPost 29
Yug

rrMaster

UK. Herts

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I don't think there is any getting away from the fact that is a bit of Russian roulette when connecting the battery on electrics. However, I have never had a problem and use throttle hold. On larger machines, one could leave the blades folted and the heli lying on its side while connecting the battery. At least, IF the heli is going to play silly buggers, you have a better escape route.

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HomeAircraftHelicopterSafety - RC Helis are not toys › Connecting/Disconnecting battery
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