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Zoom › First Loop w/Shogun=Crash... Help!
10-10-2005 01:23 PM  12 years agoPost 1
Chads

rrNovice

Depew, NY USA

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We’ll, after becoming bored with FFF and stall turns I figured it was time to learn something new. After practicing and becoming comfortable looping on the simulator I figured it was time to try it for real.

Here is how it went… I got up high (really high) and gained as much speed as I could. I pulled back on the sticks and it started to loop. When it got to the top it just stopped and dropped out of the sky. I added collective and pulled back on the sticks and I almost recovered, but I still managed to stuff it in the ground. I feel like I have come to a brick wall with my piloting skills.

What could I have done wrong? Idle up was on, I have –4 on the bottom side.

I am very frustrated and any help would be appreciated…

Chads

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10-10-2005 02:04 PM  12 years agoPost 2
Lorents

rrElite Veteran

Oslo, Norway

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Hi Chads,

Sorry to hear about your crash

Almost the same thing happened to me when I started out doing flips with my shogun - when it was almost inverted it went totally spastic due to glitching and hit the ground.

I moved the ESC and RX further away from each other and changed to a PCM receiver - now it has no problems with inverted flight.



What comes around goes around.

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10-10-2005 02:27 PM  12 years agoPost 3
Chads

rrNovice

Depew, NY USA

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I don't think I lost radio contact with the heli though.

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10-10-2005 04:21 PM  12 years agoPost 4
Heli PIC

rrApprentice

Petaluma, CA USA

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Sounds like that you were running out of rpm over the top. Did you readjust your throttle curve in ST1 to accomodate the pitch curve?

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10-10-2005 04:47 PM  12 years agoPost 5
Chads

rrNovice

Depew, NY USA

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I should mention that I am flying in high Gov mode. Do you think I may have not had enough forward speed?

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10-10-2005 04:54 PM  12 years agoPost 6
skeppley

rrVeteran

Auburn PA

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Did you remember to drop the throttle/pitch stick into negative as it went upside down?
Did you keep the collective stick pulled back the whole time to keep the loop going?

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10-10-2005 05:56 PM  12 years agoPost 7
Chads

rrNovice

Depew, NY USA

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I did add negative on top as I noticed it jumped up a bit while inverted. After that it just dropped like a stramlined anvil.

Should I be flying with maximum cyclic throw and use exponential to soften it up? Would different flybar weights or paddles help with bringing it over the top?

Sorry for all the questions but I really need help here

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10-10-2005 08:18 PM  12 years agoPost 8
wings

rrApprentice

Stafford, UK

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sounds like you ran out of forward speed when you got to the top, electric heli's have a habit of being a LOT harder to control without forward momentum. Your heli shoulld be able to loop without any negative if you have enough forward speed and judge it right. Don't let this put you off, i guarentee you will nail it next time. This sort of thing happens from time to time, i'm currently rebuilding mine again from a horid inverted landing! We just have to put it down to experience. Anyone who hasn't crashed this way is either lying or not trying.

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10-10-2005 08:28 PM  12 years agoPost 9
playfair

rrKey Veteran

Rochester, NY

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You should have a mirrored pitch curve in idle up; +/- 9 ish.
If you only had -4 and didn't bury the stick down, then you didn't have enough negative.

It took me a while to be able to loop/flip the 'gun, as it WILL drop like a plastic brick without lift. I still can't do a loop without adding lots of neg!


The sky is our canvas

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10-10-2005 08:45 PM  12 years agoPost 10
RICHW

rrVeteran

Cupertino, CA

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Why don't you try doing a loop without playing with the collective. It will make a nice round loop if you have good forward speed and sufficient elevator throw, just slowly pull back on elevator and keep holding the elevator back until the loop is finished. This really does work. If you want to tighten the radius of the loop (and start to approach flips) THEN you need to coordinate collective with the heli attitude. But I recommend no negative collective at first. just LOTS of altitude!

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