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Other › 450 SE balance tail heavy?
01-22-2007 08:31 PM  10 years agoPost 1
pmcderm993

rrNovice

MN

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I just built the 450 SE and it seems tail heavy. Should it balance under the main rotor shaft? Does it matter that much? I know a tail heavy plane is a handfull. I don't remember my XL being that tail heavy.

I have the 9650 servo as far forward on the tail as it will go.

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01-22-2007 09:23 PM  10 years agoPost 2
dday27

rrNovice

Oklahoma City, Oklahoma

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My SE is the same way till I put the battery in

Raptor 50SE, Spektrum DX7

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01-22-2007 09:32 PM  10 years agoPost 3
pmcderm993

rrNovice

MN

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I have a 2000TP and a 2100DN mah 3-cell and both still balance tail heavy.

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01-22-2007 10:01 PM  10 years agoPost 4
FBaity

rrApprentice

Tuscaloosa, AL

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My 450SE is the same way with battery and gryo installed. I haven't flown it yet but picking it up by the fly bar rod it is tail heavy. I have lots of experience with nitro and larger turbine helis. In the case of a larger heli you may only be required to carry additional aft cyclic trim provided you are not into FAI or something.But a machine as small as a 450 I am not sure what the aft CG will bring. From watching the "Finless" videos my components are located per his suggestions so maybe it will fly ok.

Frank Baity
AMA 38026

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01-22-2007 10:30 PM  10 years agoPost 5
electricdurango

rrVeteran

Sterling, VA

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I just rebuilt my se.....well its a old 450X converted into a se minus the metal bearing blocks and metal tail blocks. It was tail heavy until I moved gyro to lower frame. I am in process of converting everything to spektrum so the electron 6 in the front will be replaced with a ar6100. I also moved the majority of my wiring to the front.
I was rebuilding it to sell along with a triron and a hitec optic 6.....but now that it balances perfect required no trim to hover I cant decide.

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01-22-2007 10:48 PM  10 years agoPost 6
gmcullan

rrKey Veteran

Southbridge, MA

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I had to put 1.5 ounces of lead in the nose of my canopy to get my 450 SE to properly balance. I hate adding useless weight, but even more so hate the poor flight characteristics you get from an out-of-balance heli or aircraft.

Gerry Cullan,
Gaui 200, 255; T-Rex 250, 450 SE & SA, Mini-Titan, Blade 450

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01-23-2007 12:00 AM  10 years agoPost 7
noahb

rrApprentice

Carlasbad, NM

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I just used a thick piece of plastic and extended the lower frame out. I then moved my TP2100 as far forward as the canopy would allow. This got the bal. to level out.

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01-23-2007 12:06 AM  10 years agoPost 8
electricdurango

rrVeteran

Sterling, VA

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Try to get the majority of the bulky weight right in front of the main shaft. Then move your ESC, REC., gyro, etc around till balanced. Remember to keep the gyro somewhat away from the motor.

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01-23-2007 01:14 AM  10 years agoPost 9
robl45

rrKey Veteran

Deerfield Beach, FL

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if the CG isn't right, when you spin it, you will most likely crash. I found out the hard way.

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01-23-2007 01:30 AM  10 years agoPost 10
slider46

rrProfessor

Ocala Florida

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Try getting your tail servo tight to the boom block. I have to do this to get my SE to balance right...

Tom..... No "D" flying....

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01-23-2007 01:40 AM  10 years agoPost 11
digikid

rrApprentice

Santa Ana, Ca - USA

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Mine was the same way. What I found out was that with just the canopy on mine, it evened out so the battery will make it a bit nose heavy, but that's fine with me. What I did was mount the esc toward the front and the rx in the back but only because it's a light ar6000. So all the heavy components are up front on mine, except for the tail servo of course, but I'm using a 2100T for my gyro so that takes more weight off of the tail.

Hope this helps.

==||OCHC||==

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01-23-2007 05:34 AM  10 years agoPost 12
lead47

rrNovice

Utah, USA

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Funny, but my 450SE balanced CG slightly forward on initial setup. I have a DN-2050 mounted in the nose on the slanted ramp and the ESC right below. RX is mounted in the rear frame. It flys beautifully. Not sure, but maybe th TP-2100's are lighter than the DN's?

T-Rex 450SE - 2 Times

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01-23-2007 06:53 AM  10 years agoPost 13
gotak

rrApprentice

Ontario, Canada

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Mine was slightly off too but it only required a single penny in the tip of the canopy to fix it. For me that was the only acceptable solution because I didn't wanted to move my RX or gyro anywhere close to motor and ESC.

"It's a diagram of my idea I don't have no freaking equations yet"

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01-23-2007 12:48 PM  10 years agoPost 14
Greybird

rrVeteran

Davie, Florida

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If you need new batteries, get the TP2200 extremes. Slightly heavier and balances perfect with a 9650.

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01-24-2007 12:26 AM  10 years agoPost 15
electricdurango

rrVeteran

Sterling, VA

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Greybird.

That is exactly what I did. The 2200 extreme balances just right and gives gobs of power while its doing it. Climb outs are insane at a 100-95-90-95-100 throttle curve.

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