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nezam1 · 09-21-2009, 07:48 PM

Recently I had a crash and had to change the tail gear on my 4G6, because I am a real newbie I had to almost take away all the parts to reach the tail gear.
After putting all together now the heli push himself down instead of going up.
Everything seems at their correct place and the blade direction is also right but no way he push himself down.
I also went thru manual and create a new heli exactly like the manual setting but still same.
Please someone help.
PS, sorry for bad English.

Steve Joblin · 09-21-2009, 08:17 PM

are you sure you plugged the motor to the ESC the correct way?

SQRT(-2) · 09-21-2009, 09:50 PM

Viewed from above the Heli, the rotor should rotate in the same direction as a clock. If it is not unplug the motor, flip the wire, and plug it back in.

If that does not help, unplug the motor and start it up. See if the blades are pitched up or down as you work the throttle.

nezam1 · 09-22-2009, 07:24 AM

The motor is connected correctly because I didn’t touch it.
For the blade rotor they go clockwise.
When I unplug the motor the start throttle swash plate goes all the way up and the sharp side of the blades moves up.
I also tried to invert the pitch from -70 to +70 but is the same the helli push himself down.
I add also a photo, it might help and thanks for your help but I am still disparate.

Steve Joblin · 09-22-2009, 09:49 AM

Unfortunately, I can't see anything from the photo that would help diagonse the problem.

Do the blades pitch up or down as you give it throttle? Disconnect the motor and give it throttle so you can see the blade pitch change. Are the blades pitching up as you give it more throttle?

nezam1 · 09-22-2009, 11:21 AM

When I unplugged the motor and give throttle the sharp side of the blades move up also swash plate move up.
Now I tried again with +70 pitch and the helli fly now, seems the last time I did this didn’t save.
But there must be something wrong because I read everywhere that the pitch must be set to -70
I am afraid I am doing something wrong and the setting is not correct.

Steve Joblin · 09-22-2009, 01:31 PM

It sounds like your reverse settings are not set correctly.

Double check your Reverse settings again... maybe when you set them, they didn't save.

The good news is that is sounds like a "transmitter settings issue" and not an issue with your heli.

nezam1 · 09-22-2009, 03:59 PM

The reverse setting and all other setting are exactly like the manual only the pitch is different, +70

Steve Joblin · 09-22-2009, 04:44 PM

strange! very strange! I'm at a loss. You certainly won't hurt anything by having it set at +70.

SQRT(-2) · 09-22-2009, 06:46 PM

The sharp edge of the blade points up? The dull edge should point up, Looks like your blade holders are upside down, they should attach to the other linkage.* Check the exploded diagram in the book. If there is not one, do a search for a 4g3 manual and use it. The main rotors are identical between them.

I would remove the blades, unhook the plastic linkage from the mixing arms, flip the blade holder over by rotating them. Hook the mixing arms to the other set of linkage. Reinstall the blades. Dull side forward as per their rotation.

*The linkage in front of the blade as it rotates.

nezam1 · 09-23-2009, 05:27 AM

that solved the problem

but there is no way to see which way is up becuse both sides are identical.
thanks SQRT and Steve for your kind help.

polypeter · 09-24-2009, 03:17 AM

The connection between "ESC" and "Brushless Motor" was incorrect (i.e. You have reversed the polar)...I have attached a photo for your reference!
I hope this photo could slove the problem!

SQRT(-2) · 09-24-2009, 09:43 AM

Notice there is no markings to tell how the motor plugs in. Just make sure it spins the correct direction and everything is fine, if it doesn't flip the plug and the motor will be reversed.

As far as assembling the heli goes, don't worry, a few repairs and you will begin understand how she works and it will just make sence how it goes together.

nezam1 · 09-26-2009, 07:39 AM

Quote:

Originally Posted by polypeter

The connection between "ESC" and "Brushless Motor" was incorrect (i.e. You have reversed the polar)...I have attached a photo for your reference!
I hope this photo could slove the problem!

I have changed the polarity as you shown but this make the motor spin in opposite direction (not clockwise)
I only had to change the direction of blade holders to solve the problem and now it flies fine but as I said before there is no way for you to find out which is the correct direction unless you mark them before taking them off.

Thanks for all the help J

Steve Joblin · 09-26-2009, 09:39 AM

Great catch SQRT(-2)!!!! I created this posting so that others can learn... https://www.helifreak.com/showthread...39#post1566239

Ampdraw · 09-28-2009, 01:48 AM

Yep...what SQRT said...
Your blade grips are upside down. The silver mixing arm part should be connected to the front edge "leading" of the blade. Yours are connected to the rear. Take your blades off, disconnect the links from the mixing arms and spin both grips 180*.

Amp

miamiheli · 09-28-2009, 07:28 AM

Quote:

Originally Posted by nezam1

that solved the problem
but there is no way to see which way is up becuse both sides are identical.
thanks SQRT and Steve for your kind help.

He fixed it guys.

09-21-2009, 07:48 PM	#1 (permalink)
nezam1 Registered Users Join Date: Jul 2009	please help on 4G6 Recently I had a crash and had to change the tail gear on my 4G6, because I am a real newbie I had to almost take away all the parts to reach the tail gear. After putting all together now the heli push himself down instead of going up. Everything seems at their correct place and the blade direction is also right but no way he push himself down. I also went thru manual and create a new heli exactly like the manual setting but still same. Please someone help. PS, sorry for bad English.

09-21-2009, 09:50 PM	#3 (permalink)
SQRT(-2) Registered Users Join Date: Jan 2009	Viewed from above the Heli, the rotor should rotate in the same direction as a clock. If it is not unplug the motor, flip the wire, and plug it back in. If that does not help, unplug the motor and start it up. See if the blades are pitched up or down as you work the throttle. __________________ Gaui Hurricane w/ 530mm blades & Robird G31 Walkera Super CP Walkera Devo 10 w/ Deviation

09-22-2009, 06:46 PM	#10 (permalink)
SQRT(-2) Registered Users Join Date: Jan 2009	The sharp edge of the blade points up? The dull edge should point up, Looks like your blade holders are upside down, they should attach to the other linkage.* Check the exploded diagram in the book. If there is not one, do a search for a 4g3 manual and use it. The main rotors are identical between them. I would remove the blades, unhook the plastic linkage from the mixing arms, flip the blade holder over by rotating them. Hook the mixing arms to the other set of linkage. Reinstall the blades. Dull side forward as per their rotation. *The linkage in front of the blade as it rotates. __________________ Gaui Hurricane w/ 530mm blades & Robird G31 Walkera Super CP Walkera Devo 10 w/ Deviation

09-24-2009, 03:17 AM	#12 (permalink)
polypeter Registered Users Join Date: May 2009	The connection between "ESC" and "Brushless Motor" was incorrect (i.e. You have reversed the polar)...I have attached a photo for your reference! I hope this photo could slove the problem! Attached Thumbnails

09-24-2009, 09:43 AM	#13 (permalink)
SQRT(-2) Registered Users Join Date: Jan 2009	Notice there is no markings to tell how the motor plugs in. Just make sure it spins the correct direction and everything is fine, if it doesn't flip the plug and the motor will be reversed. As far as assembling the heli goes, don't worry, a few repairs and you will begin understand how she works and it will just make sence how it goes together. __________________ Gaui Hurricane w/ 530mm blades & Robird G31 Walkera Super CP Walkera Devo 10 w/ Deviation

09-21-2009, 08:17 PM	#2 (permalink)
Steve Joblin Registered Users My HF Map location Join Date: Aug 2008	are you sure you plugged the motor to the ESC the correct way?

09-22-2009, 07:24 AM	#4 (permalink)
nezam1 Registered Users Thread Starter Join Date: Jul 2009	The motor is connected correctly because I didn’t touch it. For the blade rotor they go clockwise. When I unplug the motor the start throttle swash plate goes all the way up and the sharp side of the blades moves up. I also tried to invert the pitch from -70 to +70 but is the same the helli push himself down. I add also a photo, it might help and thanks for your help but I am still disparate.

09-22-2009, 09:49 AM	#5 (permalink)
Steve Joblin Registered Users My HF Map location Join Date: Aug 2008	Unfortunately, I can't see anything from the photo that would help diagonse the problem. Do the blades pitch up or down as you give it throttle? Disconnect the motor and give it throttle so you can see the blade pitch change. Are the blades pitching up as you give it more throttle?

09-22-2009, 11:21 AM	#6 (permalink)
nezam1 Registered Users Thread Starter Join Date: Jul 2009	When I unplugged the motor and give throttle the sharp side of the blades move up also swash plate move up. Now I tried again with +70 pitch and the helli fly now, seems the last time I did this didn’t save. But there must be something wrong because I read everywhere that the pitch must be set to -70 I am afraid I am doing something wrong and the setting is not correct.

09-22-2009, 01:31 PM	#7 (permalink)
Steve Joblin Registered Users My HF Map location Join Date: Aug 2008	It sounds like your reverse settings are not set correctly. Double check your Reverse settings again... maybe when you set them, they didn't save. The good news is that is sounds like a "transmitter settings issue" and not an issue with your heli.

09-22-2009, 03:59 PM	#8 (permalink)
nezam1 Registered Users Thread Starter Join Date: Jul 2009	The reverse setting and all other setting are exactly like the manual only the pitch is different, +70

09-22-2009, 04:44 PM	#9 (permalink)
Steve Joblin Registered Users My HF Map location Join Date: Aug 2008	strange! very strange! I'm at a loss. You certainly won't hurt anything by having it set at +70.

09-23-2009, 05:27 AM	#11 (permalink)
nezam1 Registered Users Thread Starter Join Date: Jul 2009	that solved the problem but there is no way to see which way is up becuse both sides are identical. thanks SQRT and Steve for your kind help.

09-26-2009, 09:39 AM	#15 (permalink)
Steve Joblin Registered Users My HF Map location Join Date: Aug 2008	Great catch SQRT(-2)!!!! I created this posting so that others can learn... https://www.helifreak.com/showthread...39#post1566239

09-28-2009, 01:48 AM	#16 (permalink)
Ampdraw Registered Users Join Date: Nov 2008	Yep...what SQRT said... Your blade grips are upside down. The silver mixing arm part should be connected to the front edge "leading" of the blade. Yours are connected to the rear. Take your blades off, disconnect the links from the mixing arms and spin both grips 180*. Amp

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