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michael76 · 05-12-2012, 02:02 AM

Long story short, I burnt up my board. Had a member on here repair the board, replacing the FETs. He recommended that I buy a new main motor as he believed the main motor was bad. I installed a new motor with the newly repaired board and bound it to my DX6i. I am getting full cyclical movement with TH on. When I take TH off, I get my tail motor spinning, but the main blades won't move. Any ideas? I know there are some smart people on this forum who may be able to help! Thanks in advance!!

UKHeliBob · 05-12-2012, 02:19 AM

Does the main motor work if you remove the main gear ? If not, does the main motor work if you plug it directly into a battery ? It is possible that you have a bad new motor.

Talesin · 05-12-2012, 02:57 AM

Is it a v2 unit? Are you holding the rudder to the right while you're binding? If the answer is yes to both, then there's another problem. If it's no to the second one, v2 bind procedure changed to require the rudder stick be moved right for a computerized TX (instead of not touching it as with the v1). Common result of not holding right rudder while binding to a computer TX with a v2 is cyclic control, but no throttle response.

Not sure about the tail though... can't remember if that spins up and it's just not the mains, or what. Could also be an issue with the board repair. If it's not the bind thing, PM MegaStumbler and he should be able to point you toward where to put your multimeter leads to check the components (after the obvious one of seeing if there's voltage on the main motor plug when throttled up, of course).

michael76 · 05-12-2012, 11:10 AM

The pinion isn't spinning when I take off the main gear.

Mega is the one who did the repair. He said the board was tested and worked fine before he shipped it back to me. The main motor was new, I opened it from the package. Fyi, it is a v2 and I held the right rudder while binding.

Any additional suggestions. How do u test the motor with a battery??

tommy217xxx · 05-12-2012, 11:25 AM

Just plug the motor in to a battery if u have the stock battery connector.

michael76 · 05-13-2012, 08:31 AM

I tried plugging both of the main motors that I have directly into a battery. One worked and one didn't. I set aside the non-functional main motor and worked with the functioning main motor. I also swithed the wires for the main motor and tail motor and the tail motor worked fine while plugged into the main motor FET. I reinstalled the main motor that was functioning and rebound my tx. The main motor will work as I begin to give throttle and then cuts out. When I return throttle to 0 and reattempt to give throttle, I get the same result, the main motor works before cutting out? Any ideas?

Yamahajrp · 05-13-2012, 09:10 AM

Possible a loose connection on the main motor plug, try winning through plug ends

E-Razor450, mcpx v2(144mm tail, cnc alumni swash), DX6i

michael76 · 05-13-2012, 04:36 PM

How would I go about that? Not sure I know what u mean??

05-12-2012, 02:02 AM	#1 (permalink)
michael76 Registered Users Join Date: Jan 2012	Main Blades Not Spinning? Long story short, I burnt up my board. Had a member on here repair the board, replacing the FETs. He recommended that I buy a new main motor as he believed the main motor was bad. I installed a new motor with the newly repaired board and bound it to my DX6i. I am getting full cyclical movement with TH on. When I take TH off, I get my tail motor spinning, but the main blades won't move. Any ideas? I know there are some smart people on this forum who may be able to help! Thanks in advance!!

05-12-2012, 02:57 AM	#3 (permalink)
Talesin Registered Users My HF Map location Join Date: Jan 2012	Is it a v2 unit? Are you holding the rudder to the right while you're binding? If the answer is yes to both, then there's another problem. If it's no to the second one, v2 bind procedure changed to require the rudder stick be moved right for a computerized TX (instead of not touching it as with the v1). Common result of not holding right rudder while binding to a computer TX with a v2 is cyclic control, but no throttle response. Not sure about the tail though... can't remember if that spins up and it's just not the mains, or what. Could also be an issue with the board repair. If it's not the bind thing, PM MegaStumbler and he should be able to point you toward where to put your multimeter leads to check the components (after the obvious one of seeing if there's voltage on the main motor plug when throttled up, of course). __________________ *Blade*: mCX2, mSR, mSRX, Nano-CPX, 2x mCPX (v1), mCPX-BL, 120SR, 450 X Spektrum DX8, DX6i

05-12-2012, 11:25 AM	#5 (permalink)
tommy217xxx Registered Users Join Date: Mar 2011	Just plug the motor in to a battery if u have the stock battery connector. __________________ MCPX BL(#1 V1 Hp05s/120SR tail, V1 C05m/Dual coreless tail) Nano cpx stock Trex 450 Pro, Spektrum Dx6i, Phoenix

05-13-2012, 09:10 AM	#7 (permalink)
Yamahajrp Registered Users My HF Map location Join Date: Mar 2012	Possible a loose connection on the main motor plug, try winning through plug ends E-Razor450, mcpx v2(144mm tail, cnc alumni swash), DX6i __________________ Current: 130x, CopterX 450 Pro FBLBuild in Progress Gone With the Wind: MCPx, E-razor 450, Nine Eagle Bravo SX

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05-12-2012, 02:19 AM	#2 (permalink)
UKHeliBob Registered Users My HF Map location Join Date: Aug 2011	Does the main motor work if you remove the main gear ? If not, does the main motor work if you plug it directly into a battery ? It is possible that you have a bad new motor.

05-12-2012, 11:10 AM	#4 (permalink)
michael76 Registered Users Thread Starter Join Date: Jan 2012	The pinion isn't spinning when I take off the main gear. Mega is the one who did the repair. He said the board was tested and worked fine before he shipped it back to me. The main motor was new, I opened it from the package. Fyi, it is a v2 and I held the right rudder while binding. Any additional suggestions. How do u test the motor with a battery??

05-13-2012, 08:31 AM	#6 (permalink)
michael76 Registered Users Thread Starter Join Date: Jan 2012	I tried plugging both of the main motors that I have directly into a battery. One worked and one didn't. I set aside the non-functional main motor and worked with the functioning main motor. I also swithed the wires for the main motor and tail motor and the tail motor worked fine while plugged into the main motor FET. I reinstalled the main motor that was functioning and rebound my tx. The main motor will work as I begin to give throttle and then cuts out. When I return throttle to 0 and reattempt to give throttle, I get the same result, the main motor works before cutting out? Any ideas?

05-13-2012, 04:36 PM	#8 (permalink)
michael76 Registered Users Thread Starter Join Date: Jan 2012	How would I go about that? Not sure I know what u mean??

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