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Next D . Futaba-RC . Blink Helicopters

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e-E-Flite Blade CP CX 400-3D > Blade 400 3D blade balancing properly?
 
 
05STAR
Heliman
Location: vancouver washington

I sell products that require weights down to the 10th of a gram. (no not drugs) a tenth of a gram is 2-3 drops of water i have weighed my blades out of the package with in this amount......Is that not close enough?
Just looking for teckneeks...thanks all
05-01-2008 04:03 AM
 
 
speeddemon370
Senior Heliman
Location: Spruce Grove, Alberta, Canada

No, it's not close enough. You should have your blades balanced so that a piece of scotch tape (clear stuff) the size of your fingernail will throw it out of balance. A tenth of a gram out will still cause vibration. Trust me, I tried my scale too before I bought a balancer.

with 2 ears and 1 mouth you should listen twice as much as you talk
05-01-2008 04:32 AM
HOMEPAGE  
 
 
rkramer
Heliman
Location: Bismarck, ND

you need both an accurate scale that goes to 1/100 of a gram AND a balancer if you want perfect balance.
05-02-2008 11:13 PM
 
 
speeddemon370
Senior Heliman
Location: Spruce Grove, Alberta, Canada

I don't understand why you need a scale too. I would consider mine to be perfectly balanced. To me it dosen't matter what they weigh as long as they're equal. Care to enlighten us?

with 2 ears and 1 mouth you should listen twice as much as you talk
05-02-2008 11:49 PM
HOMEPAGE  
 
 
rkramer
Heliman
Location: Bismarck, ND

It is easier to get the static balance of the blade exactly on with a scale. My normal procedure is to get static balance spot on, and then dynamically balance them.
05-03-2008 12:34 AM
 
 
05STAR
Heliman
Location: vancouver washington

I want to thank all for the info, i still dont no how or what to ballance the blades with ? i have red tape the LHS sold me so im guessing you add tape for weight to ballance! also what do you place the ballancer on (couple glasses?) anyway thanks alwas
05-03-2008 03:22 AM
 
 
zaw
Senior Heliman
Location: Lebanon, NH - USA

Just get Align Balancer get 2 coffee mugs and balance them with some scotch tapes at the end of the blade.
Will be good enough for Blade 400 to do anything with. If you're working larger heli then they will need to be balanced with weight.

BCP+CP2 mix Separates BL, DD-tail, HH //\\ HBK2 JGF 400 11T //\\ Friend's B400
05-03-2008 03:49 AM
 
 
JB642
Senior Heliman
Location: Waterford, MI - USA

Here's a great video on blade balancing (dynamic and static balance are important)-

http://video.helifreak.com/?subpath...alancing101.wmv


or go to http://www.helifreak.com/showthread.php?t=52530
and select "Blade Balancing 101"


JB
05-03-2008 03:52 AM
 
 
gooberseptember
Senior Heliman
Location: monroeville pa

First you must find the COG. then go on to balance. Dont put tape at the end of the blade, always put the tape @ the COG. This way you will not through off the COG.

Michael
05-03-2008 08:56 AM
 
 
speeddemon370
Senior Heliman
Location: Spruce Grove, Alberta, Canada

My LHS and local pro's said cg is never going to make a difference on 400/450 sized blades. (325mm). Could someone explain to me what I stand to gain?

with 2 ears and 1 mouth you should listen twice as much as you talk
05-03-2008 02:50 PM
HOMEPAGE  
 
 
JB642
Senior Heliman
Location: Waterford, MI - USA

What you stand to gain is a smoother running helicopter!! Less vibrations to "upset" your gyro, etc.

The question is - Why wouldn't you take 5-10 minutes to check their balance and correct it if necessary??

Watch the above referenced video for how and why!!

JB
05-03-2008 03:01 PM
 
 
speeddemon370
Senior Heliman
Location: Spruce Grove, Alberta, Canada

I would like to see that vid but after half an hour of cookie this and browsing history that it's still not working for me and I can't believe how frickin stupid they have the whole thing set up. I'm gonna quit before I throw my mouse through the screen. If you find another link or a way to get in there I'm definately interested but otherwise that will be my last ever visit to helifreak.

with 2 ears and 1 mouth you should listen twice as much as you talk
05-03-2008 03:39 PM
HOMEPAGE  
 
 
speeddemon370
Senior Heliman
Location: Spruce Grove, Alberta, Canada

Quote 
Why wouldn't you take 5-10 minutes to check their balance and correct it if necessary??

I would, if it will do anything. My heli dosen't have any vibration. Silky smooooooooottttttttttthhhhhhh. (lol) Like I said I've been told all along not to bother because it won't accomplish anything with such small blades. Who knows, maybe they just weren't interested in explaining it. These are the same group of guys that said not to balance my tail blades, but I did anyway and have a smoother running heli to show for it. I'll do some digging and try it out. I'll post back here after a couple flights and see if I can notice a difference. It may be hard to tell though because I just went from +8/-8 to +12/-12 last night so that's probably going to be what I'm noticeing. Oh well, we'll see I guess.

with 2 ears and 1 mouth you should listen twice as much as you talk
05-03-2008 03:47 PM
HOMEPAGE  
 
 
05STAR
Heliman
Location: vancouver washington

well thanks to all of you this is what if come up with....
align trex 450 blade ballancer,two beer cans with a thin edge around the top for minamal frrction and a long level to assure the levelness of the ol work bench.....thanks again to all....

05-04-2008 05:23 AM
 
 
zaw
Senior Heliman
Location: Lebanon, NH - USA

That's what I use for 400 blades and I also made ones for my smaller blades too. work extremely well. I did proper CG on blades too, didn't make thing any more smoother at all.

I have a uncut zip tie sticking out under the heli, it used to be able to tell vibrations with that. after balance no vibes at all. Save your self headaches and Keep it simple.

BCP+CP2 mix Separates BL, DD-tail, HH //\\ HBK2 JGF 400 11T //\\ Friend's B400
05-04-2008 05:32 AM
 
 
JB642
Senior Heliman
Location: Waterford, MI - USA

Balancing stand

Great balancing stand 05Star!! I thought you guys drank Labatt's Blue "up there" ??!!

I've got some new blades to check and think I'll use a pair of Labatt's holders today!

JB

ps Based on the parts, it looks like you have a CX there also!
05-04-2008 03:08 PM
 
 
rvcrawford
New Heliman
Location: Gilbert, AZ

I have the main rotor blades balanced but I'm still getting vibration that shows up on the horizontal tail fin. How do you balance the tail blades?
05-06-2008 03:40 AM
 
 
speeddemon370
Senior Heliman
Location: Spruce Grove, Alberta, Canada

I flush them up to each edge on the helimax blade balancer and go from there.

with 2 ears and 1 mouth you should listen twice as much as you talk
05-06-2008 03:57 AM
HOMEPAGE  
 
 
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Fast Lad Performance . Center Stick . Esprit Model

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e-E-Flite Blade CP CX 400-3D > Blade 400 3D blade balancing properly?
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