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HomeMy Site✈️Aircraft🚁HelicopterHelicopter Main Discussion › why is a bigger heli more stable
10-29-2013 08:31 PM  5 years ago
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waheed1998

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baltimore,md

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why is a bigger heli more stable
Me being the newbie, i am and a student of this hobby/lifestyle.I want to know why bigger heli more stable.Is it because the wind tunnel that the blades produce make the heli like it sitting on a cloud,or is it do to fbl,gyro.Or is it servo,cyclic response is a lot slower because of the bigger blade vs 450 heli servo response a lot faster due to smaller blades.My 450 3gx is a real stable heli after 2 years of learning curve,now i have a 600,to me i don't really feel the difference maybe cause i haven't ff it yet, still hovering, and that's it.and over 2000$ haven,t got the guts yet to fly it like my 450 that i enjoy flying.
anthony jackson
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10-29-2013 08:41 PM  5 years ago
thenewguy

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Corvallis, Oregon Where there is liquid sunshine!

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It's very simple physics.

The bigger sizes equals mass or weight, and that equals stability. It takes a great outside force to have an effect on a heavier helicopter.

Thanks,
Chris
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10-29-2013 08:55 PM  5 years ago
McKrackin

rrProfessor

Lucasville,Ohio

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Couldn't have said it better myself but I'll try...

It...well....nope.Got nothing.lol...

It's just that simple

Why is a mobile home more stable than a plastic Porta-John?
The bigger it is,the less influence the wind and weather have on it.

You need to get those things out there and fly them around...the difference will become glaringly obvious.
I literally never use the word literally right.
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10-29-2013 09:22 PM  5 years ago
jason46

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MI

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Also, a small heli at an angle with no centrifugal force acting on it wants to come out of the sky like a rock, where as a larger heli this effect seems to take longer to occur. Might have something to do with disk loading or something...
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10-29-2013 09:24 PM  5 years ago
sharam

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Northern California - Fly at Morgan Hill Field

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Inertia!Verba volant, scripta manet
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10-29-2013 09:48 PM  5 years ago
Santiago P

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South West, Ohio

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Also, a small heli at an angle with no centrifugal force acting on it wants to come out of the sky like a rock, where as a larger heli this effect seems to take longer to occur. Might have something to do with disk loading or something...
Inertia!
No is money.
Like you have heard before, planks fly on lift,
helicopters fly on money $$$

Bigger helicopters fly on a larger cushion of cash

The bigger your wallet, the more lift, simple physics.

Santiago
Team Minicopter - PeakAircraft.com
bavarianDEMON- Team Kontronik - Scorpion Motors-
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10-29-2013 09:48 PM  5 years ago
Scott1115

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Greenwich, CT

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It also takes longer (miliseconds) for a larger helicopter to respond to given inputs - all other things being equal, they are less "twitchy."Compass 7HV, Trex 550E
RCRCC
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10-29-2013 09:58 PM  5 years ago
jason46

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MI

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Santigo is referring to the dollar to lift ratio.We made up some rules can we have your moneys now.
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10-29-2013 10:02 PM  5 years ago
Santiago P

rrProfessor

South West, Ohio

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Exactamundo ^^^

But beware, don't try the million dollah 450 wonder, if you don't know how to compress the $$$ in a small space/volume, it wont work.
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10-29-2013 10:11 PM  5 years ago
sharam

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Northern California - Fly at Morgan Hill Field

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LOL, I like the answer "money" even more than what I said!

Verba volant, scripta manet
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10-29-2013 10:34 PM  5 years ago
Santiago P

rrProfessor

South West, Ohio

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Here's is another one:

A large budget can affect physics.

In other words, a large wallet may have some pilots fly under "skill distortion", and/or that the $$$ heli can fly better than it really can.

Few crashes later, and a smaller wallet, reality sinks in, and all reaches an equal balance.

That's also physics.

S
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10-29-2013 10:44 PM  5 years ago
Stephen Born

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USA

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Think of the main blades as a gyro. As the disk size increases, the more stability.
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10-29-2013 11:23 PM  5 years ago
waheed1998

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baltimore,md

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moneypitvictim,you should have been my language teacher,because you make things so simply over-stood,but a true analogy.Money do make the world go around,and i guess they make heli's too.Im looking for something more scientific as an explanation.anthony jackson
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10-30-2013 01:03 AM  5 years ago
Retired2011

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Lee's Summit, MO

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A large budget can affect physics.
It can also ease the "PUCKER FACTOR"
Chet
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10-30-2013 01:28 AM  5 years ago
Santiago P

rrProfessor

South West, Ohio

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It can also ease the "PUCKER FACTOR"
I did went on to say it affects the pilot perspective.
moneypitvictim,you should have been my language teacher
LOL, THANKS

I could have gone on and spew on a physics and aerodynamics speach, but I learned that it would normally fall on deaf ears, or be debated by folks that already know way more than a lowly shoe salesman like me, LOL

S
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10-30-2013 01:33 AM  5 years ago
Retired2011

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Lee's Summit, MO

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I could have gone on and spew on a physics and aerodynamics speach, but I learned that it would normally fall on deaf ears, or be debated by folks that already know way more than a lowly shoe salesman like me, LOL
You and Al Bundy?

The explanation you gave was definitely more appropriate for us RR addicts!
Chet
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10-30-2013 02:15 AM  5 years ago
Santiago P

rrProfessor

South West, Ohio

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FLY HIGH!

GO POLK HIGH!

LOL

Santiago
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10-30-2013 02:21 AM  5 years ago
Retired2011

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Lee's Summit, MO

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Looks really confident, doesn't he?

Like when I'm getting ready to lift off.
Chet
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10-30-2013 02:25 AM  5 years ago
Bouchah

rrKey Veteran

Willow Spring, N. Carolina USA

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Why is a mobile home more stable than a plastic Porta-John?
The bigger it is,the less influence the wind and weather have on it.
Ive never heard of a tornado hitting a Porta-John park before!
Blade 130x (5)
Trex 550 V2 (18)
Shuttle ZXX
Freya Xspec (20)
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10-30-2013 02:32 AM  5 years ago
Rob43

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Midland, MI USA

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My way of understanding it: More gyroscopic effect of the larger rotor is a primary reason for increased stability. A heavier heli under the same size of rotor won't be much more stable. Some, but not as much as one with a heavier rotor spinning.Rob
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