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T-REX 450 › First auto
08-10-2007 01:22 PM  10 years agoPost 1
pumba15t2f

rrNovice

Medina Ohio

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Well, I wasen't quite ready to try an auto yet since I am still learning, but today I had to learn quick. I had my heli about 40 feet from the ground when I lost the motor. I did not realize how quickly it would come down and flaired hard right before landing. I was able to set it down without breaking a single thing! After my heart stopped pounding, I found that one connection on the motor had worked itself loose. I always heard that it dropped like a rock, but never thought it to be true. I am glad that now I now have a little experience when it comes to an "emergency landing", but would not purposely try it yet. Sometime when I get good, just not yet lol.

No S**t, there I was, Inverted with a slingload, Airmedals dangling

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08-10-2007 01:48 PM  10 years agoPost 2
helimatt

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Lafayette, IN

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Well done! Its a ribbon on your wall that you were able to get it landed safely with motor outage and no warning on the 450!

I have only done mini-Autos with the 450 from head-level high max, and on purpose so I am ready. Probably gonna try them from higher up pretty soon.

Never, ever, ever, ever give up.

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08-10-2007 06:55 PM  10 years agoPost 3
docjoe

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Stockton, CA United​States

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Congrats on a good save!

Joe
We haven't seen Colonel Angus around these parts for years!

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08-10-2007 08:15 PM  10 years agoPost 4
T-Rex-Flyer

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Panama City, Fl

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Great save,

I usually trash my landing struts.

Congrats

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08-10-2007 08:29 PM  10 years agoPost 5
drdot

rrElite Veteran

So. California,​Orange County.

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fwiw..

Good job!
Keep at it, doing autos with the 450 gets addictive...

John.

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08-10-2007 10:44 PM  10 years agoPost 6
Bryguy17

rrApprentice

Fullerton, San Luis​Obispo CA

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first theyre unintentional, then theyre from 300 ft up, then theyre from 300 ft up hitting a car floormat for a target, then you end up hitting that same target on top of a table. it just keeps getting crazier! good save though

SLO Flyers
TREX SA with amazing figure 8 action!

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08-11-2007 06:07 AM  10 years agoPost 7
HHawk

rrVeteran

Gardnerville Nv.

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My first auto was a flame out on a Raptor 50, I know the feeling, Glad you got down safe. To this day autos still dont get practiced enough, but hopefully all the sim time I get will save me again

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08-12-2007 08:02 PM  10 years agoPost 8
robhurlin

rrKey Veteran

Pretoria, South​Africa

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I did about 10 autos this afternoon with my Raptor 90 (Radix 710 blades). There is so much hang time at the end that you really have to mess it up to land badly. I am totally spoilt now - if my Rex 450SE needs to be auto'd I'll probably be toast. I don't yet have the courage to practice them on the Rex although I was testing out my throttle hold this afternoon - maybe I should try and chicken out 1m above the ground like I did with the R90 until confident.

Rob.

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08-14-2007 02:30 AM  10 years agoPost 9
HHawk

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Gardnerville Nv.

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yes , you are spoiled with a 90

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08-14-2007 02:06 PM  10 years agoPost 10
helimatt

rrElite Veteran

Lafayette, IN

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Rob, if you wait til 1m above the ground to bail from an auto with the 450, you won't likely recover. I think decision height is more like 3m or so. It drops like a venture capital stock in a credit storm!

Never, ever, ever, ever give up.

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08-14-2007 02:15 PM  10 years agoPost 11
JeffM1999

rrApprentice

Erie, CO

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It drops like a venture capital stock in a credit storm!
LOL So, true. Especially up here at a mile high!!

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08-14-2007 03:17 PM  10 years agoPost 12
SSN Pru

rrElite Veteran

Taxachusetts

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autos on a trex450 are a blast. I did my first one when a motor shaft sheared in a hover at 20 feet or so. After fixing it, I leanred to purposefully do them from any height! Now I dont land without auto'n it in.

Stupidity can be cured. Ignorance is for life!

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08-14-2007 04:54 PM  10 years agoPost 13
helimatt

rrElite Veteran

Lafayette, IN

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Also, autoing on landing saves time by having the main rotor already spooled down when you go to pick it up at the end of the flight!

Never, ever, ever, ever give up.

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08-14-2007 05:11 PM  10 years agoPost 14
SSN Pru

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Taxachusetts

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Not that much time. Are you in that much of a rush that 1 or 2 seconds of spool down time is going to put a damper in your day?

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08-14-2007 05:30 PM  10 years agoPost 15
helimatt

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Lafayette, IN

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Maybe... depends on how embarassed I am about my flight performance...

Never, ever, ever, ever give up.

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08-14-2007 06:18 PM  10 years agoPost 16
robhurlin

rrKey Veteran

Pretoria, South​Africa

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Seriously guys, how hard is it to auto a 450? I've set the throttle hold so that the motor is still turning at low rpm on my Jazz ESC. This way it should spool up much quicker if I cancel throttle hold. If I kill the motor all together it will go into soft start mode and will never spool up in time to fly away. We are also hot & high here in Pretoria (4600', typically 86deg in the summer and 75 in the winter).

So, can I try an auto - just pull collective at the very last second from maybe a metre up? Or maybe bleed it in gently from 2m up? Is it OK to practice them and cancel 3m up??

Rob.

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08-14-2007 06:33 PM  10 years agoPost 17
bilbo

rrVeteran

Boston, MA - USA

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So, can I try an auto - just pull collective at the very last second from maybe a metre up?
It's not quite that simple:

http://www.ronlund.com/autos.htm
http://www.swift-tuning.com/autorotation.php
Or maybe bleed it in gently from 2m up? Is it OK to practice them and cancel 3m up??
You should be able to bail from 3m up. Just be aware that if your head speed has dropped a lot and you bring the power back on quickly the heli may spin around a few times until the tail rotor gets spinning fast enough to be able to counteract the torque.

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08-14-2007 06:53 PM  10 years agoPost 18
JeffM1999

rrApprentice

Erie, CO

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Also, make sure your blade grips are tight. Folding a blade is an instant crash.

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08-14-2007 08:04 PM  10 years agoPost 19
robhurlin

rrKey Veteran

Pretoria, South​Africa

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Thanks guys, that's very helpful. I have SAB 320mm carbon blades and they are tight! I'll give autos a try this weekend!

Rob.

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08-14-2007 08:14 PM  10 years agoPost 20
HHawk

rrVeteran

Gardnerville Nv.

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All you can do is try....but autos at high altitude with a 450 are a bit of a challenge no matter how good you are,so come down fast and use what collective you have very sparingly.

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