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Home✈️Aircraft🚁HelicopterAlignT-REX 700N › Trex main shaft needs to be hardened
09-20-2009 11:33 PM  11 years ago
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misskimo

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Alaska 17 years, before mississippi for 31y

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Trex main shaft needs to be hardened
hey, Align , we need the main shaft to be hardened. with my trex electric with the servos direct to the swash and my new Vblade extreme 710s the shaft is bending in flight. 10 flights and Im getting a out of track sign and a head thats wobbling.
Its time Align. that cheap 12mm hollow shaft is no better than a good 10mm solid shaft.

T
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09-21-2009 01:25 AM  11 years ago
Helifat

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Vista,Ca

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Or you need to start making your own custom main shafts!....
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10-08-2009 01:01 AM  11 years ago
AcidKindred

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Mobile, AL - USA

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Is this a common thing to happen with hard 3D? How hard do you fly? Anybody else have this happen?
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10-08-2009 01:07 AM  11 years ago
Cameron

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St. Johns, Florida

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This is not common.
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10-08-2009 02:32 AM  11 years ago
flyboy907

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woodstock, ga

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never heard of it?
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10-08-2009 02:40 AM  11 years ago
helirulz

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Singapore

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I'd suggest you re-look into all your linkages and check that each ball is tight on and not loose.

If you had a bent mainshaft, it wouldn't make your blades go out of track or wobble. It'd vibrate so badly that start seeing your ENTIRE heli going into a blur that you think that you're seeing double vision
I swear it'd make you go WTF! and after hitting Thold, your blades will come to a complete stop within 10seconds

And JFYI, from what i know, Hollow shafts are actually stronger than solid shafts.
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10-08-2009 02:51 AM  11 years ago
Anthony.L

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Seattle, WA

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If you had a bent mainshaft, it wouldn't make your blades go out of track or wobble. It'd vibrate so badly that start seeing your ENTIRE heli going into a blur that you think that you're seeing double vision
Not true. I had a main shaft that was very slightly bent in a crash and I didn't notice it at first. Flew the heli and notice a slight vibration and the blades where just a little out of track. Replaced the main shaft and everything back to normal.

So a slightly bent main shaft can have subtle symptoms.
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10-08-2009 02:51 AM  11 years ago
Cameron

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St. Johns, Florida

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Hollow shafts have more torsional strength.
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10-09-2009 03:35 AM  11 years ago
Justin Stuart (RIP)

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Plano, Texas

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The verdict then is that the problem described is NOT caused by a flexing main shaft?Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives
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10-09-2009 04:05 AM  11 years ago
Eco8gator

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Palm Beach, FL

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Ive seen it happen on a TREX 700 electric also...depends on how its being flown. I saw it with my own eyes one time but never again.Xera Motors
ProBar
Minicopter
Thunder Power
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10-09-2009 08:14 AM  11 years ago
poem

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china

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making your own custom main shafts!
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10-09-2009 09:03 AM  11 years ago
Heliguychris

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Perth, West Australia

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Wow dude, ya must be flogging it Licensed (CASA) UAV operator certificate holder 1-YFOF5-01 www.helicamaerial.com.au
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10-09-2009 09:12 AM  11 years ago
OICU812

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Grande Prairie, Alberta, Canada

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AT a funfly about a month ago, I also witnessed same thing of a 700N that got bent in flight, it was not a pretty sight, almost a re kit.....Once upon a time there were Nitros, flybars and frequency pins...
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10-09-2009 09:18 AM  11 years ago
Heliguychris

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Perth, West Australia

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Any chance ya got a pic, or a vid there Tony ?Licensed (CASA) UAV operator certificate holder 1-YFOF5-01 www.helicamaerial.com.au
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10-09-2009 02:57 PM  11 years ago
Yellowjacket

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Kennewick Wa.

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I'v bent a few with my 700E

Bill Pierce
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10-09-2009 05:28 PM  11 years ago
misskimo

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Alaska 17 years, before mississippi for 31y

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naw! but I will look for the solid one from my Joker that bent in flight too , that happen the first of the year, I would expect it from flybarless. but with a flybar. mine is touchy, very responsive for a flybar. I like it that way.

T
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10-09-2009 05:30 PM  11 years ago
Hellsiege

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Colorado Springs, CO

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subscribed - interesting first I've heard of this.
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10-09-2009 07:04 PM  11 years ago
MrMel

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Gotland

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Yup, happened to me too, sneeze at it and it bends, I had about 10 mainshafts at home before I sold my T700E.
Even a hard landning on the 700N and first thing that happened was the mainshaft bending.

Running lower head helps (Bonta etc)
Gone fishing..or hunting..or something
My site: http://heli.dacsa.net - VBar videos and more
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10-09-2009 07:34 PM  11 years ago
QuantumPSI

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Atlanta, GA

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subscribed, I crashed my 700 and didn't bend the mainshaft (broke the blades though). Got off lucky that time......now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part
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10-19-2009 12:18 PM  11 years ago
Heliguychris

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Perth, West Australia

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Im sorry i might have doubted you Tony.....had it happen to me yday Licensed (CASA) UAV operator certificate holder 1-YFOF5-01 www.helicamaerial.com.au
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Home✈️Aircraft🚁HelicopterAlignT-REX 700N › Trex main shaft needs to be hardened
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