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All Forums >> RC Helicopters >> Electric RC Helis >> E-Flite Helicopters >> inverted with a blade cp?
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inverted with a blade cp? - 10/16/2006 8:56:50 PM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		hello everyone,
i was doing loops and crashed 2 out of 5. and i decided, wat the heck, and want to learn to hover inverted. i don't have a sim or anything, only 14yo. the blade cp was my first heli. can do everything with it upright, got a futaba 7c, lipo and bh upgrade...
ok, so i decided, hmmmmm, i dont have the $$$$ to try it out in real knowing that i would DEFINITELY crash, so... i made an X with zip ties across the skids, and hung it to the ceiling. i first initialed the gyro while upright, and then hung it upside down. i spooled it up on normal and then flipped it up to idle up 1. it was doing ok... then, as i add negative pitch, the heli starts to jump up and down, more negative, faster jumps, i didnt go any futher than that and took it to thorttle hold.
so... why is it jumping up and down as i add negative? (not sure if i'm in negative, or still in the positive range, if that's the case, then reducing positive) how might i learn to fly inverted? i will be getting a bigger bird sometimes after the winter (if no good deal shows up in my lhs 2nd handed)(probably a trex). should i learn to go inverted on that bird? i do find that rudder is reversed and can really mess me up. dont have a hh on my blade. anyone here learnt to go inverted with a blade and not a better heli?


ANY suggestion is appreciated.

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i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.
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RE: inverted with a blade cp? - 10/16/2006 10:01:22 PM   
X3n0



Posts: 266
Joined: 8/28/2006
From: Pontiac, MI, USA
Status: offline 		what blades are you using. flat bottom or symmetrical

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RE: inverted with a blade cp? - 10/16/2006 10:03:40 PM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		esky wood symmetricals, cheaper than eflights...

< Message edited by chopperdudes -- 10/16/2006 11:01:22 PM >

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i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.

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RE: inverted with a blade cp? - 10/16/2006 10:21:49 PM   
sox101



Posts: 179
Joined: 7/11/2006
From: Yarmouth, NS, CANADA
Status: offline 		The best, and only thatt i know of, way to learn flying inverted is with a simulator.

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RE: inverted with a blade cp? - 10/16/2006 11:07:41 PM   
lwatson



Posts: 742
Joined: 8/25/2003
From: Fort Collins, CO, USA
Status: offline 		If you have jumping, you have a sticky collective. Not to say, I have ever flown upside down. But trust your gut, if you see weird behavior like that, then something is wrong. Remember with negative pitch the collective slides into an entirely different range than it is used to.

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RE: inverted with a blade cp? - 10/16/2006 11:35:49 PM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		i think i have a theory to my own problem, tell me how likely this is...
since i made an X with zip ties on the skids, it'll stretch like a rubber band because the cf rods on the skids are not stiff. and while i might think i'm adding in negative pitch, i'm actually on the way of reducing positive pitch, it came to a point where the positive pitch has the power to pull it down but not have the power to correct it's 'rubber band' bounced up, and as soon as it bounces up, the 'rubber band' releases and it drops back down.

it is confusing, but try tying two strings across the skids to make an X, then gently pull on the middle of the X, you'll see what i mean. i doubt i have a sticky collective. i lube all parts and running bh with 3bb blade grips.

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i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.

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RE: inverted with a blade cp? - 10/16/2006 11:54:52 PM   
Chriscru



Posts: 622
Joined: 3/21/2003
From: Babylon, NY, USA
Status: offline
quote:

ORIGINAL: chopperdudes

esky wood symmetricals, cheaper than eflights...


Chopperdudes,

What part# are you using? If those work on the CP they should work with the CPP I dont want to spend another $15 for main blades..


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Chris
"If You Arent Running Gas What Are You Doing Here?"

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RE: inverted with a blade cp? - 10/16/2006 11:58:29 PM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		i would be alowed to order online shortly, if you can order online, get a pair of those $8.00 sym blades from helidirect.

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i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.

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RE: inverted with a blade cp? - 10/16/2006 11:59:10 PM   
jent


 

Posts: 307
Joined: 8/25/2006
From: , CO, USA
Status: offline 		it is possible you are having a ruber band effect.....try just holding on to it, m,ake sure you got it good and the blades are clear and spin it up....add some negative pitch. See if the presure feels smooth or jerky. If it is smooth then I bet you are experincing a rubber band effect. Otherwise something is wrong....start diagnosis.

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jent

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RE: inverted with a blade cp? - 10/17/2006 12:08:32 AM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		ya, forgot to mention, i did do that and the pressure is even. i guess then i'd have to wait for a simulator. btw, i saw g3 in china for 350 bux chinese. it doesnt include a tx, but includes a usb cable that allows you to plug the blade tx into your computer. i might get my grandparents to get it and bring it over, since they are immigrating to canada. but that will likely be in the spring. i know teh concept of inverted really good, and can do it in g3 demo that i downloaded, but i uses the keyboard. so it's just not the same.

_____________________________

i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.

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RE: inverted with a blade cp? - 10/17/2006 3:16:33 AM   
Dynamic



Posts: 143
Joined: 9/13/2006
From: , BC, CANADA
Status: offline 		Is it a dumb question to ask if your in idle up mode?


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RE: inverted with a blade cp? - 10/17/2006 3:33:13 AM   
TheVirus



Posts: 121
Joined: 10/1/2006
From: Tempe, AZ, USA
Status: offline 		http://www.helidirect.com/product_info.php?products_id=779 Those?

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RE: inverted with a blade cp? - 10/17/2006 8:37:42 PM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		yes, i'm in idle up and yes, those are the blades.

_____________________________

i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.

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RE: inverted with a blade cp? - 10/18/2006 3:59:18 AM   
olds455


 

Posts: 135
Joined: 8/30/2002
From: anchorage, AK, USA
Status: offline 		Where is your upright hover in Idle up? 3/4 stick? 1/2 stick? I ask because in idle up at middle stick should be zero pitch. Upright hover should be above that and inverted should be below mid stick. Ive flown my cp inverted, flips, rolls, loops, And even some invert hover. Ive found that the pitch can be manipulated buy changing the links between the blade grips and the mixer. If you have a pitch gauge, check it there. I get +10 to -10 Im in the middle of a rebuild from a loss of control fron inverted hover. Oops the pice is this spring(winter)

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RE: inverted with a blade cp? - 10/19/2006 9:56:18 PM   
chopperdudes


 

Posts: 648
Joined: 8/19/2006
From: Toronto, ON, CANADA
Status: offline 		the pitch i'm not too worried about, i hover between midstick and 3/4. i have a 7c to do all the programming. so by what you mean... FLYING in inverted is easier than hovering? i've done loops... but that's it. i also found out that the motor will stall very badly and the headspeed will decay if i give a jab of collective. what setup do you use on yours? gyro? bl motor? or all stock? i got a bh upgrade and a lipo.

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i wont buy anymore helis, i wont buy any more helis, i wont, wow! is that a ? i won't buy any more starting tomorrow.

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RE: inverted with a blade cp? - 10/19/2006 10:12:44 PM