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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Pitch range for autos?
05-23-2007 06:22 AM  13 years ago
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killerg

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Eastvale, California

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Pitch range for autos?
What is the ideal negative pitch for autos? I am just learning them and I am wondering what my negative pitch should be.

Thanks
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05-23-2007 06:47 AM  13 years ago
Nick Jones

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anderson

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I just run +12 -12 which is the same as my normal curve. Just run your regular curve.
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05-23-2007 08:27 AM  13 years ago
SkateFreak

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Cambs UK

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Yeah,
technically you only need -4 but heck -11 makes it a lot more interesting

-Jvr
Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher
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05-23-2007 10:03 AM  13 years ago
JAGNZ

rrProfessor

Auckland, New Zealand

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Limiting your neg pitch to -6 or so at first will make it easier if you happen to drop the stick too low too fast...
Jason Greenwood

www.3dheli.co.nz
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05-23-2007 10:09 AM  13 years ago
tchavei

rrProfessor

Portugal

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At the beginning I too was worried with my pitch settings so I ended up with +12, -4 to be on the safe side. Since I'm not into acrobatic autos yet, those settings have worked for me for about 2 years now. Last week I had my first flameout and I managed to land it unharmed and I still was in idle-up (12,-12)... I did come down faster than usual but nothing uncontrolable . Once you're at ease with autos, just use your idle-up curve and thats it

Tony

--------------------
"Perfection and patience usually walk side by side..."
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05-23-2007 02:14 PM  13 years ago
Yug

rrMaster

UK. Herts

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It's best if you can keep the same pitch range in all flight modes so you don't have to think about it.
A funny thing happened last saturday - got to the field feeling in a somewhat frazzled state of mind; got the heli spooled up, took off in normal mode and at about 25 feet decided to hit idle up. For some perplexing reason, I hit throttle hold instead autoed it down, WOKE UP and enjoyed the rest of the session.
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05-23-2007 05:20 PM  13 years ago
SkateFreak

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Cambs UK

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Heh,
Nicely done there yug.
I think we'v all had thoes kinds of first flights heh.

But yeah, i think once you get used to autoing and bringing the heli down fast, you can have lots of fun with autos...

My favriout party trick used to be to take the heli fairly far out, get plenty of height and then just hit throttle hold, tail toward the ground and let her get plenty of fall speed that way....
Once you start to near the ground level off at about 3ft and bring her in over the fields at a nice high speed.
Then if all was done right the heli should just shoot back towards you and for some reason you can really pull you the distance like this

Although push it to hard and you'll have the heli come up to you blades practically stopped, but you can usualy make it off the flair

I havnt a clue how this all works because i'v never stopped to think about where my fingers are at... it just happens

I suspect it may even be possible to pull this off inverted... now that would be rather good *contemplates*...

Might have to look into trying that in the future

-Jvr

Ps, on my last auto due to a new eccpm setup on my R50 i had negative 14 degrees pitch...
Heli dropped exceptionally fast, but as long as you dont hit the negative to hard she keeps plenty of headspeed
Just be sure to work up to that
Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher
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05-23-2007 06:41 PM  13 years ago
Zaneman007

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Texas - USA

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I have mine at -6 to +10 for autos. When I'm doing autos I don't think about the stick position. I'm thinking about the fall rate, and trying not to bounce the heli. I like a nice soft landing with the heli tilted forward on the front skids. I'm not doing any flips, rolls, or pirouettes.(But I hope to get there) Currently, with the pitch at -6, its coming down plenty fast for me.Old Guys Rule!
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05-23-2007 07:13 PM  13 years ago
flyingbajau

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Montana, USA

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Keep practicing
Majority of us keep the same pitch curve in all modes. Less thinking like Yug said.

As you practice more, it will be a second nature and you are actually looking at the fall rate compensate accordingly instead of thinking about it.

Good Luck
Saza L
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05-23-2007 07:37 PM  13 years ago
RappyTappy

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Encinitas, CA

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I studied the effect of pitch during auto's and I found that that if you go more than -3 or -4 degrees, you actually slow down the rotorhead rpms and drop faster. The optimum degree of pitch to matain highest rpms was only about -2 or somewhere there abouts.Still buyin' and flyin' then crashing and cryin'
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05-24-2007 01:18 AM  13 years ago
Portblock

rrVeteran

Van Nuys, CA

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Hey RappyTappy,

Thats interesting, I will have to play with that. How did you check it? any advice?

One thing I do, regardless of my negative, is make sure center stick is 0, this way it doesnt jump down on me. I have met a few people who have it linear from -4 to +10, and when they hit throttle hold, it jumps down on them.
The voices in my head can beat up the voices in your head.
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05-24-2007 02:48 AM  13 years ago
killerg

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Eastvale, California

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I think I will just go with the +12/-12 and learn pitch management.
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05-24-2007 08:39 AM  13 years ago
Spacey

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Pretoria, South Africa

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I'm with Chris here.

I am one of those people that run different pitch ranges on all my flight modes and on all my helis, the lighter the heli the more negative you will need to get the blades going again after making a mistake like having the motor die on you inverted and you using too much headspeed to flip it over again, you will on a lighter heli then need -6 or even -5 again to quickly get the blades spooling up again.

Like Chris said though you will soon after getting them going have to go to -3/-2 again or they won't keep wining up and just stay slowish unless everything is perfect (Attitude+speed). On my F3C helis which are pretty heavy you don't want to slam in -6! They plummet to earth like that in it takes alot of effort to stop them again at the bottom, so on these machines I have a maximum of -4 on hold. I think I run -3.5 now and they really auto well when you get it to around -1~-2 coming down. Mid stick is setup though to be at exactly zero so I don't have to think where is positive and where is negative.

Cheers
Rudolf
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05-24-2007 04:14 PM  13 years ago
Four Stroker

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Atlanta

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The last several replies are about right, -4 to +12. Your brain thinks in a linear way. Try a straight pitch curve from -4 to +12 to learn on. Feed in the pitch smoothly and continuously for the last 50 feet or so.

After you learn how, you can do whatever you please. Learning with -12 to +12 will be expensive.
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05-24-2007 06:14 PM  13 years ago
eitanh53

rrVeteran

ISRAEL

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killerg there is'nt any ideal negative pitch for autos. I was surprised to see so many post here with so many suggestion, but to adjust good pitch for auto you need someone with experience. I can tell you how to adjust it but you need expert to do it right. Many people doing auto and think they do it right.
briefly If you start -4 up tp 10/12 put you heli in 100feet high switch to auto mode and look careful how your chopper behave? Look at the point were your heli being-image line from this point to ground and this imaginary line MUST BE 45 degree. If your heli bringing down fast (below the 45 degree line)) rise the pitch. If it is too slow above the 45 degree line reduce the picth. If it is on 45 degree line this is the ideal auto pitch. ONLY on this line your heli will not lose RPM nor come to ground too fast.
see my gallery
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05-24-2007 07:18 PM  13 years ago
RonHill

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FLL, FL

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Learning with -12 to +12 will be expensive.
I do not understand the reasoning behind that statement.

I have all my curves the same both + and - and had no real issues. I LOVE auto's and do 4-5 on every flight.
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05-24-2007 08:54 PM  13 years ago
tchavei

rrProfessor

Portugal

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There are a lot of variations to autos. We can't just say you need to do them at 45 degree period. Most of the autos I've seen performed by beginners are at more than 45 degrees... more like 60 degrees. Even on Alan Szabos DVD there isn't one single auto he performs at that angle. Always over 45 deg. I personally I prefer the 45 degree approach but the others work too.

On the other hand, you can do diving autos which I love to do i.e. I take the bird to about 200 ft height and 200 ft distance (45 degree angle to myself) I then put collective to zero, hit TH or cut the engine completely (depends if its the last auto of the flight or not) and imediately as the bird starts falling, I push the nose down until the bird is completely vertical racing to the ground at high speed (collective remains around zero so the blades loose headspeed). When I'm at about 20 feet, I pull the bird gently out of the dive and feed in a itzzy tiny amount of negative collective and keep the nose up at about 10 degrees... you will hear the blades spool up like crazy and the bird will be comming in level at around 10 feet or less for 150 feet or more... now thats exciting!

Tony

--------------------
"Perfection and patience usually walk side by side..."
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05-24-2007 09:56 PM  13 years ago
killerg

rrApprentice

Eastvale, California

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I was just looking to find out the ideal negative pitch so I wouldn't slow the blades down.
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05-24-2007 10:00 PM  13 years ago
Furious Predator

rrProfessor

Kitchener, Ontario, Canada

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i think the ideal pitch will vary depending on blades and model weight. but i think the ideal pitch is in the -4 to -3 degree range.

i just run a +/- 12 degree curve, then i can come down quicker and adjust my decent path and rate if i need to.
Shawn
Team Leisure-Tech
Team HelixRC
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05-24-2007 10:10 PM  13 years ago
Four Stroker

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Atlanta

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Why don't you try all of the above recommendations on a simulator where the cost is zero ? Then you can pick whatever suits your own self interest. None of these guys are going to buy your new parts for you.
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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › Pitch range for autos?
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