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Old 07-26-2010, 10:08 AM   #1
Hoghunter7mm
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Default Need help...SR tilts to right.

Hi to all. I'm a noob at Helis (have flown planes quit a bit) and need your help. While the tail is in the SR tilts to the right. I checked the balance and it looks good. I tried moving battery to the left and it seemed to help a little. I moved the trim all the way to the left and it helped more but I don"t have much servo movement left so I don"t think that's where the problem is. I'm thinking it might be in the swash plate servo arms but don't know much about it and want to check with you guys before messing around with it. It's been a problem all along and the LHS said that's normal and just go fly it. Well, it has resulted in a few miss happenings and they got to sell me more stuff, so I guess they are more happy them me. I haven't seen a posting addressing this problem and hoping someone has a solution?
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Old 07-26-2010, 10:14 AM   #2
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Power up the heli with BOTH motors unplugged and flip the Throttle hold switch to achieve a linear 0-100 pitch curve. Set the throttle (collective) stick to halfway and check the swash to see if it's level. If it's leaning to the right the it would make sense that the swash tilts downward to the right, if you pop off the link on that side of the swash and turns the rodend CCW a turn or two and reattach an chek for level. You should be able to get it pretty close by eye. Oh yeah, center the trim before doing this.
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Old 07-26-2010, 10:27 AM   #3
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yep sounds like you need to move your trim a few clicks in the opposite direction that it is leaning, or you can adjust the servo push rods that connect to the swash plate. unless it is really bad all you need to do is trim it out.

the trim under the right hand stick. click it a few tiems, take it back up, if it is still doing it set it down, click it a few more times take it back up and repeat till it stops leaning

you should get used to that, when putting on the battery each time it not going to be centered perfectly and might throw your trim off a little bit each time.

edit.
i missed the part that says you moved the trim all the way to the left.

if you want to do it right get your servo arms at 90 degrese when you are at half stick and than adjust all the servo push rods. or you could just adjust the one that is giving you trouble.
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Old 07-26-2010, 10:28 AM   #4
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Hoghunter7,

Are you talking about the body tilt when hovering/flying? If so that's normal.....no, really, it is. My Blade 400 hangs to the right side about 2-3 degrees when hovering as well. It freaked me out when I was learning nose in because I wanted to over-correct for that, and I finally realized that's the way it's supposed to be. Watching full scale ones hover taxiing (especially Bells) I recall the same phenomina, and they would always touch down right skid first.

Hope this helps.

Jake
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Old 07-26-2010, 10:33 AM   #5
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Quote:
Originally Posted by lightbg View Post
Hoghunter7,

Are you talking about the body tilt when hovering/flying? If so that's normal.....no, really, it is. My Blade 400 hangs to the right side about 2-3 degrees when hovering as well. It freaked me out when I was learning nose in because I wanted to over-correct for that, and I finally realized that's the way it's supposed to be. Watching full scale ones hover taxiing (especially Bells) I recall the same phenomina, and they would always touch down right skid first.

Hope this helps.

Jake
+1 That's a natural lean (unless its causing your heli to run off to the left). It should lean a little bit. If you correct it, you'll be in trouble if you ever end up inverted because then you'll have a bigger leaning issue that is 2x.

The reason is because the tail is pushing to the left to counter act the torque, and in order to counter act that tail action, the heli needs a little bit of aileron.
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Old 07-26-2010, 10:35 AM   #6
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Quote:
Originally Posted by lightbg View Post
Hoghunter7,

Are you talking about the body tilt when hovering/flying? If so that's normal.....no, really, it is. My Blade 400 hangs to the right side about 2-3 degrees when hovering as well. It freaked me out when I was learning nose in because I wanted to over-correct for that, and I finally realized that's the way it's supposed to be. Watching full scale ones hover taxiing (especially Bells) I recall the same phenomina, and they would always touch down right skid first.

Hope this helps.

Jake
i just did a head set up and took it out for it's fist flight, if it tilts in one direction it is not right IMO , after my set up i took it out for a hover, all of my trim was almost perfect but it was leaning to the left just a little, clicked my trim a few times and it no longer does that, it practically will hover its self for a second or two before it start to drift. it does not lean at all in any direction till it starts to drift off.

when in a dead steady hover it should not lean at all IMO
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Old 07-26-2010, 10:38 AM   #7
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Swash looks level so I guess that means it is normal. It's weird that they fly tilted to the right as much as it is. I guess it will take some getting used to.. It freaks me out as well. Do you guys do anything to compensate for the tilt (move battery opposite direction, adding weight to the left, etc.) or just fly it as is. I guess I'll get used to it in time and it won't throw me off as much. Thanks
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Old 07-26-2010, 10:46 AM   #8
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when mine was leaning to the left it kept wanting to go to the left. no more lean and no more drifting off to the left. if there is a lean it is so slight that i dont even notice that it is there.
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Old 07-26-2010, 11:03 AM   #9
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I would like to take the lean out of it as well, but I'm new and still learning about setups... guess it'll take some time to get it all down. Been having a great time so far, Helis are So Coooll!
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Old 07-26-2010, 11:07 AM   #10
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Originally Posted by Hoghunter7mm View Post
I would like to take the lean out of it as well, but I'm new and still learning about setups... guess it'll take some time to get it all down. Been having a great time so far, Helis are So Coooll!

do you have a TX like the dx6i where you can go into menu' s and adjust things.

check out these set up video's it seems like a lot but it's pretty easy once you start doing it.

http://video.helifreak.com/?subpath=...CPM_Part_1.wmv
http://video.helifreak.com/?subpath=...CPM_Part_2.wmv
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Old 07-28-2010, 11:46 AM   #11
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I just picked up the latest issue of "R C Heli" magazine (Issue #49, August 2010), and on p.102-103 there is an article on hovering. On p. 103 there is a picture of a tail in bird showing the effect of the anti-torque rotor thrust forcing the ship into a tilt just to maintain a stationary hover. In the article it states: "You will quickly learn that a helicopter requires a certain amount of tilt to remain stationary". - Ryan Kephart, author.

As long as you realize that this is indeed normal you won't even notice it after a short time. Don't shift the batt or dial in trim, just fly.

Jake
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Old 07-28-2010, 12:22 PM   #12
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+1. i was looking for that article myself. It's a perfect example of a tail in hover with slight tilt to the right to maintain a hover.
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Old 07-28-2010, 12:36 PM   #13
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Quote:
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+1. i was looking for that article myself. It's a perfect example of a tail in hover with slight tilt to the right to maintain a hover.

ok maybe i did not notice a little bit of lean, when i did notice lean it was moving in the direction i was leaning and kept going right back to the leand and drifting off tat is till i trimmed it out.

but next flight i will pay attention and see if i notice any lean going on.
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