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HomeAircraftHelicopterMain Discussion › Your auto secrets
11-22-2006 01:57 AM  11 years agoPost 1
Nashville

rrElite Veteran

Formerly Music City now back home in Sunny Florida

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What are your auto-rotation secrets? I'm just starting and having problems landing smoothly like you pros and I'm sure lots of others could use some tips.

I was Spektrum when Spektrum wasn't cool

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11-22-2006 01:59 AM  11 years agoPost 2
greg

rrKey Veteran

Yorkville, IL

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Give it negative collective while decending. Flare. Then add positive collective to ease the landing. Works every time.

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11-22-2006 02:00 AM  11 years agoPost 3
Nashville

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Formerly Music City now back home in Sunny Florida

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How much negative do you give? Bring it all the way down or 1/4 stick or 1/2 stick. My pitches are -10 0 10. I seem to be giving too much negative, I think.

I was Spektrum when Spektrum wasn't cool

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11-22-2006 02:08 AM  11 years agoPost 4
Grant H

rrKey Veteran

Madison, WI

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Not too much of a trick to it man. Just gotta "feel" it in the air and judge. If you arnt good at doing it, practice, practice, practice.

Although the Rex600 does auto well, You may have more luck autoing a 50 or 90 sized nitro heli.(More weight)

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11-22-2006 02:14 AM  11 years agoPost 5
Nashville

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Formerly Music City now back home in Sunny Florida

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How's the weather in Maryland? Is it getting too cold to fly.

I was Spektrum when Spektrum wasn't cool

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11-22-2006 03:04 AM  11 years agoPost 6
greg

rrKey Veteran

Yorkville, IL

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-4 or -5 degrees. More for smaller helis less for bigger helis.

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11-22-2006 03:46 AM  11 years agoPost 7
NitroPolymer

rrVeteran

Southeast Florida

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Remember that once the blade RPM is buzzing along at a good rate, you can go to a more neutral pitch, which will preserve the RPM. The purpose of initially going to lower pitch is to build a descent rate which forces air through the disk. Prolonged negative pitch will decay RPM as well, it is just not as pronouced as a result of the induced flow from the descent. Any angle of attack (+ or -) will create induced drag, as the angle of attack creates a lift vector that has a rearward component. The lowest drag a blade can be at for a given RPM is zero degree of angle of attack (which is not necissarily equal zero degrees of pitch).

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11-22-2006 03:48 AM  11 years agoPost 8
Nashville

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Formerly Music City now back home in Sunny Florida

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Thanks Jet. Very complex but I think I understood what you were saying? Where at in S.E. Florida? I'm from the Stuart area and still make it back there a couple of times a month. Where do you fly?

I was Spektrum when Spektrum wasn't cool

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11-22-2006 03:51 AM  11 years agoPost 9
NitroPolymer

rrVeteran

Southeast Florida

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I live in Greenacres, which is near West Palm Beach. I fly at a couple of "unofficial" fields, and also at Gold Coast R/C in Boca Raton. Drop me a PM sometime when you are coming down, and we will go shoot some autos. Autos are actually one of my favorite things to do, and I have come up with some entertaining variations! (and broken some helis doing it!)

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11-22-2006 03:55 AM  11 years agoPost 10
Tyler

rrElite Veteran

Chicagoland area

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Autos in the beginning.......
Fast forward flight, loops, rolls, inverted hover, engine sounds good, then............

.......bbbbrrrrriiiiiippppp.........the noise maker quits.....

......the mind says, "Hit throttle hold!, Hit throttle hold!, Hit throttle hold!, Hit throttle hold!"......

.....the fingers forget to keep flying while fumbling for the hold switch......

....Crunch, bounce, chicken dance.....FLIP.....DARN BRAIN FART!!!

Tyler

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11-22-2006 07:06 AM  11 years agoPost 11
stickyfox

rrKey Veteran

Rochester, NY - US

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I tried autos in G3 when I was first starting out, couldn't do it to save my life. I figured it wasn't a big deal because I was flying a BCP at the time, and autos with an electric are pretty much just exercises in showing off.

But the other day just for the heck of it, I tried it on the computer in the shop and gently set the raptor 30 down right where I wanted it. I tried it 4-5 more times just to see if it was luck, and found that I could pretty easily land it without damage every time.

I do almost zero simulator training. Since I learned up from down I get all my training done on actual helis.

I can't do it inverted or piroflip it to knee-height and then save it, but I'm pretty confident I could save some money if my engine quit, and it really isn't due to any kind of practice. I say just forget taking a systematic approach to learning autos and just do it. If you're still getting the hang of regular flight and basic aero moves, don't worry about it yet.

I remember reading some textual descriptions of what to do in an auto and being very very confused. I watched a friend of mine, who flies competitively, perform a few autos this evening and he's doing them just like I do, so I think you'll figure it out once you've got some hours under your belt.

Of course all of this advice is conditional on your learning the same way I do, and maybe you do and maybe you don't.

-fox

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11-22-2006 09:55 AM  11 years agoPost 12
PaulJC

rrElite Veteran

Hertfordshire UK

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The hardest part of an auto is flipping that switch..........

Re-entering the atmosphere...

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11-22-2006 11:08 AM  11 years agoPost 13
TOSH

rrElite Veteran

UK.Peterborough

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The hardest part of an auto is flipping that switch..........
Or finding all the bits.

Flybars. Who needs `em.

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11-22-2006 12:36 PM  11 years agoPost 14
abgraham

rrApprentice

Deep South Texas

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I've found a good way (for me) to practice autos is to start from Normal mode with the Pitch about -3 or -4. Match the Normal pitch curve with the throttle hold curve. Then when you do the auto, bring the collective stick full down. If the decent is going well, hit the hold switch. If not, just throttle out. The reason I like it is that I don't have to worry about the collective stick until during/after the flare.

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11-22-2006 12:44 PM  11 years agoPost 15
PaulJC

rrElite Veteran

Hertfordshire UK

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I guess one thing to avoid is bad habits, setting your bottem end for pitch to -3/4 will not help much when (if?) you want a +/- 10 pitch curve for 3D.

A heli will auto quite well into wind with anything from about -2 to -6/7, this gives you a pretty broad range to aim for.

However at -7 it'll come down pretty fast but will have enough HS to recover, if you start low you will carry a lot of your HS from flight into the auto anyway, just don't slam the stick down into the negative as it'll lose a lot of HS and be driven towards the ground.

Start high, bail out high and just play around with various ptch settings until you find what your machine is comfortable with, you'll also see how you can vary your descent speed by using the pitch to help get it landed (near) where you want

Re-entering the atmosphere...

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11-22-2006 12:55 PM  11 years agoPost 16
Tyler

rrElite Veteran

Chicagoland area

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Ron Lund
If you want to learn from one of the best auto men in the hobby, read Ron Lund's instructional article for learning autos. His article and a few conversations on the phone took me from wacking parts regularly to actually being successful.

Go the the runryder home page
click on Rick's r/c link (middle of the ads)
go to the search icon at bottom left of menu
type in autos
scroll down through the results to find "AUTOS 101"
read the article
practice what Ron says
Then I dare you to try to wipe that silly ear to ear grin off your face, cause it ain't gonna happen for a long time.
Warning: the rest of your flying progression will suffer because autos will quickly become your favorite part of going to the field.
Warning #2: don't wave any cash in Ron's face and challenge him to an auto contest, as you will be making another donation to the Ron Lund Auto Rotation Account.

Tyler

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11-22-2006 01:27 PM  11 years agoPost 17
Nightstalker

rrElite Veteran

UK (BEDFORDSHIRE)

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hey Tyler just read all that info great reading, i have not had the guts to do an auto above 5ft yet, but on the sim i can do it all day great fun, but after reading whats on ricks site it gave me some good hints for me to think about when i first go to do it

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11-22-2006 01:37 PM  11 years agoPost 18
jschenck

rrProfessor

La Vista, NE.

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I like Ron Lunds write up and this one:

http://www.raptortechnique.com/lear...m#autorotations

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11-22-2006 01:53 PM  11 years agoPost 19
Nightstalker

rrElite Veteran

UK (BEDFORDSHIRE)

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yea thats the one i have been getting most of my pointers from, i can do them from up to 5ft with ease, just having the guts to flip the (OH HELL) switch

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11-22-2006 02:50 PM  11 years agoPost 20
jschenck

rrProfessor

La Vista, NE.

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the trick for me to go from baby auto's to full time was going to the field when nobody was there (lunch time) and there was a good breeze. I went up high and flew FFF coming straight over my right shoulder right into the wind. I planned on have plenty of time to flip off the switch an bailing out about 1/2 way down but it was going so slow and easy I just finished it. I sat there laughing for a few seconds (like an idiot by my self in the middle of a soccer field) then took off and did at least 6 more.

I would recommend practicing bail outs on the simulator. If the head speed bleeds off too soon you need to have the training to click off throttle hold and go around. Also, if you really need some extra confidence dial up a bit of engine speed on the throttle hold. That'll give you a lot on the bottom and help build confidence. Work it down until you have a nice quite slow idle and the satisfying wooshing sound of the blades.

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