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HelicopterMain Discussion › SCEADU EVO 50 SHAKING HARD WHEN I HIT THE IDLE UP
12-15-2003 05:37 PM  14 years agoPost 1
VELOCYRAPTOR

rrNovice

Jakarta, Indonesia

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My Seceadu Evo 50 is shaking very hard on her landing skid when I hit the idle up switch.
My friends evo also have exactly same problem.
Please help me how to solve it.
Any advice is appreciated.
Thank's in advance
Albertus

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12-15-2003 05:47 PM  14 years agoPost 2
mrNoodles

rrProfessor

Borlänge, Sweden

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Do the blades track?
Are the blades tight in the grips?

/Fredrik
'Hm now I just have to find out where to connect the GV1 sensor to the Jazz80 ESC.

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12-15-2003 05:49 PM  14 years agoPost 3
z11355

rrMaster

New England

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what kind of surface is the machine on
when you do this?

it's not unusual for Hirxbx machines
to shake, rattle & roll on very slick surfaces.

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12-15-2003 05:51 PM  14 years agoPost 4
VELOCYRAPTOR

rrNovice

Jakarta, Indonesia

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Yes, the blades is track, and bolt tight on the rotor grip. The funny thing is my friend's evo also have the exactly same problem.
My friend says that it could be because we over rev the rotor rpm. But my friend's raptor have no problem with the similar rotor speed.
I really confused.
Albertus

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12-15-2003 05:55 PM  14 years agoPost 5
VELOCYRAPTOR

rrNovice

Jakarta, Indonesia

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Surface machine? I fly it from a grass, the when her on mid air, I hit the idle up, the the machine raise the rpm slowly, then she began to shaking violently. The baddest shaking area is on her landing skid (half frame down)
Albertus

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12-15-2003 06:41 PM  14 years agoPost 6
Tompa

rrNovice

Gotland, Sweden

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Yes, the blades is track, and bolt tight on the rotor grip.
Try loosen the blades so the don't sit too tight in the blade holder.

Tompa

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12-15-2003 06:49 PM  14 years agoPost 7
rob_jones

rrKey Veteran

Perry, GA

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Is the engine tuned properly? A too lean or too rich engine will cause shakes.

What is the rotor RPM when it shakes? I assume that when you go into idle up, the rotor RPM is high. But if it is low (say, below 1500 or so), the heli will shake (well, more like wobble, but since I'm guessing that English isn't your first language, you might mean "wobble" )

Blade 550X, T-Rex 450 Pro FBL

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12-15-2003 08:25 PM  14 years agoPost 8
Jarold C

rrApprentice

Somewhere near Pittsburgh, PA

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Blades were too tight, that may have caused a feathering spindle bend.

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12-16-2003 03:06 AM  14 years agoPost 9
VELOCYRAPTOR

rrNovice

Jakarta, Indonesia

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Jarold: The blade is not so tight, but I will try to loose is a little tomorrow.

BimmerM3: Yes the engine is tune perfectly. The heli engine is relatively easier to tune than RC car (my previous hobby), so I pretty sure about it.

Tompa: Thank you for advice, I will give it try tomorrow.

Albertus

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12-16-2003 11:39 AM  14 years agoPost 10
Tripen2

rrApprentice

Back in Tucson, AZ

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VELOCYRAPTOR

What kind of blades are you using. I just had the same problem over the weekend. I'm flying woodies. I took them off rebalanced them, now no more shakes. hope that helps.

Mike

16hrs to build 30secs to crash
Raptor 90
Raptor 50V2
Trex, HB CP

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12-16-2003 02:25 PM  14 years agoPost 11
VELOCYRAPTOR

rrNovice

Jakarta, Indonesia

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I use TWM symetrical 600 glass. This is very cheap, but fairly good one, only US$ 29 /pair.
So you just balanced the blade and the problem gone?
I already done it but the result is not same
So any suggestion?
Albertus

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