RunRyder - Balance?

rrTV-PHOTO

New HD TV

HOME rrTV-PHOTO GALLERIES MY GALLERY HELP-FAQ

myHOME PM pmRR MEMBERS 716 ONLINE 46 EVENTS SEARCH REGISTER START HERE

1 page

672 views

POST REPLY

Century Helicopter	.	MTA Hobbies	.	Model Rectifier Corp
	.		.

HIROBO Freya - Sceadu - Shuttle > Balance?

musictoo
Heliman
Location: West Sand Lake, NY

It seems to me that my Scadeau 30 is tail heavy. Can this be? Does this heli require any weight up front to balance?

01-06-2002 Over year old.

gyroman
Senior Heliman
Location: Pasadena, CA

My two cents is the to just trim it, if it is too tali haeavy move your battery pack up further towards the front.

01-06-2002 Over year old.

HOMEPAGE

kokemon
Senior Heliman
Location: Little Rock AFB

My Sceadu was very tail heavy too. What I did was put the battery up front with the receiver and it balanced right out. Hope this helps.

Dan

01-06-2002 Over year old.

musictoo
Heliman
Location: West Sand Lake, NY

B]My Sceadu was very tail heavy too. What I did was put the battery up front with the receiver and it balanced right out. Hope this helps. [/B]

Already did that. Maybe it's just me. I was goofing around on the lawn this morning and the tail seemed to want to tip down very easily. It wasn't as bad when I moved to the pavement. Just wondering.

01-06-2002 Over year old.

fitenfyr
rrProfessor
Location: Port Orchard, Washington

Hmmmm..

Going to start building my Sceadu 50 today. I have noticed the same thing with my Freya. Most of the guys I know say it is in the landing gear. Some have turned the gear around and say it helps. I have yet to try it on my Freya. I think I will on the Sceadu. The heli is basically a shrunk down version from what I see.

Jason

Jason Stiffey
Fly Fast....Live Slow...

01-06-2002 Over year old.

HOMEPAGE

musictoo
Heliman
Location: West Sand Lake, NY

Here's the deal. I moved the skids all the way to the rear and that helped. I flew about 3 tanks today and got the blades tracking right and the trims set. (First time heli flying for me). By the end of the thrid tank I think I was getting comfortable, and that seemed like a good time to stop before I got too complacent. But...more questions. I had to add a lot of tail trim (in my opinion) to keep the tail straight. I centered the trim and adjusted the push rod, but I guess I was surprised how much it needed. Second, it took a lot of forward trim (elevator) to stop it from creeping backwards. Looking at the swashplate with the heli at rest, it is noticably tipped forward. Is this normal?

01-07-2002 Over year old.

fitenfyr
rrProfessor
Location: Port Orchard, Washington

Add a weight

Just out of curiosity what Gyro are you using? If you have an older mechanical gyro mounted behind the main shaft that my be contributing to you CG problem. It sounds like a balance issue now. I would move as much weight up front as you can. Also ad a 1oz. lead sinker (smashed flat in a vice or something) to the nose and see if that helps. When I was flying my Nexus with the older gyro I needed the extra weight to balance the heli.
Just a thought to look into.

Jason

Jason Stiffey
Fly Fast....Live Slow...

01-07-2002 Over year old.

HOMEPAGE

musictoo
Heliman
Location: West Sand Lake, NY

I do have my gyro behind the main shaft, but it's a 401. I wouldn't think that it would make that much of a difference by itself. I think I gotta try the lead thing. Am I the only one with a Scadeau that needs this?

01-07-2002 Over year old.

fitenfyr
rrProfessor
Location: Port Orchard, Washington

Here is what I did....

Just fininshed the 50 kit yesterday.
I put my 460t up front (don't know how well it will work, but my 401 works fine on my Freya in that postion. FYI there is about 1/2 in difference in the distance between the two positions). I turned the front gear around and moved the skids back to where they looked ok.
Balance seems good. It is very stable on the skids. Test flight this weekend if I can get and OS50 crank....

Jason

Jason Stiffey
Fly Fast....Live Slow...

01-08-2002 Over year old.

HOMEPAGE

vetrider
Elite Veteran
Location: Daleville, AL (Ft.Rucker)

I have my 401 on the gyro plate in back and the battery and RX way up front. I had 2 AA cells up front but when I switch to a 4.8V 2700 NiHM from a 6V 1400 NiCad, I didn't need the 2 AA cells. It balances neutral.

Balance is not too critical on a heli as long as you don't get it TOO far back of center. It will make it hard to pitch back forward after a hard pitch back move like in an AUTO

Magnum Fuel

01-08-2002 Over year old.

musictoo
Heliman
Location: West Sand Lake, NY

I saw in another post that they were balancing by supporting the fly bar and seeing if the heli is level. Is this valid? If it is, my Scadeau is wicked tail heavy. To the point that it would take some serious weight to balance it out. I stuck my 3/8 ratchet on the nose and that was just about right. Seems like a lot of weight to me. Any suggestions?

01-13-2002 Over year old.

vetrider
Elite Veteran
Location: Daleville, AL (Ft.Rucker)

Quote
I saw in another post that they were balancing by supporting the fly bar and seeing if the heli is level. Is this valid?

Yep this will do very well.
Make sure you weigh it with the canopy on or it'll seem very tail heavy.

I got a buddy that has 3 - old 1/4 inch drive long reach sockets in the front of his secadu 30 and about 4 different paintjobs layered on the canopy and it stands on it's nose if you look at it cross-eyed!!

My sceadu 50 balance LEVEL with 401 mounted on back and Batt and RX all the way up front. Hovers real nice TOO!

Magnum Fuel

01-13-2002 Over year old.

Manxman
Heliman
Location: Isle of Man

OK, I understand that the CofG has to be right, so it's balanced with the canopy on, but is it balanced with or without fuel in the tank?

Eric

01-21-2002 Over year old.

mash
Heliman
Location: Stratford-on-Avon, UK

Seems to me that if you need a lot of forward trim to keep the hover stable in light winds then there's something wrong - the trim shouldn't have to fight against a rearward CG. Mine certainly is showing this despite having the gyro up front. I'm going to move my NiCad forward, out of the battery compartment, and if necessary I'll move up to Sub-C cells as I can't bear the thought of adding useless weight.

01-22-2002 Over year old.

traderdave2
Veteran
Location: Covington, GA

balance

musictoo
I don't really try to get the helicopter balanced too much. Put what you can up front and leave it be. If you feel you must add weight then just get a larger battery. I can't bring myself to add dead weight to the helicopter. Trim the helicopter once you have it in a hover and leave it be. Remember that the cg is always going to change with the fuel level.
This is just what I like to do. I have never seen a tail heavey helicopter get pitch sensitive like a plane.
Harlan

01-22-2002 Over year old.

JCadwell
Key Veteran
Location: Richland WA/ Morro Bay, CA

It is my understanding that just a little nose heavy is better than tail heavy... I would balance it with fuel in it, so that as the fuel drained it would get slightly more nose heavy. If you balance it empty, you start tail heavy. As for my Sceadu 50, balance is right in front of the mainshaft, empty. It noses down just barely. I have a 3000 mah pack in the battery box, my reciever on the front ledge, and a gy501 mounted about that on the flats around the servo box. I also have a Curtis Muscle pipe hanging out the back.

01-22-2002 Over year old.

1 page

672 views

POST REPLY

PowerHelis	.	JR-Spektrum	.	Gyro Hobbies
	.		.

HIROBO Freya - Sceadu - Shuttle > Balance?

UPDATE SCREEN PRINT TOPIC

Advertisers

Subscribe to This Topic