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EmuFarmer · 07-20-2015, 03:45 PM

My cpx won't take off. When at nearly full throttle and pitch it flips over to the left. The main gear is firmly in place, the spindle is good, servos travel correctly. Anyone have any ideas?

Thanks

astrofler · 07-20-2015, 04:58 PM

Any vertical slop in the main shaft. if you hold the heli fuse, can you move the shaftup and down?

Sometimes after a bang, the main gear gets pushed down a bit allowing enough play to prevent enough positive pitch to take off.

EmuFarmer · 07-20-2015, 05:13 PM

Thanks for the reply.

There is no slop. I have the main gear pushed all the way up.

tporter416 · 07-20-2015, 07:51 PM

If you put the blades parallel to each other (both aligned with tail boom), turn on throttle hold, does the amount of pitch for up equal that of down? Measure the distance between the ends of the blades, they should be about equal.

Tom

EmuFarmer · 07-20-2015, 09:41 PM

When I put place the blades parallel with the tail boom the blades are side by side when pitch is 50%.

tporter416 · 07-20-2015, 10:31 PM

I assume you have no trim or sub trim on your aileron channel in your Tx? Other than that it sounds like your flight controller board is bad...

EmuFarmer · 07-20-2015, 10:33 PM

Yeah, I even started a new profile to make sure I had nothing funky in there. I am feeling that it's my main board. I guess next step is to find a board that isn't 90% the cost of a new cpx...

Thanks for the input on the matter.

tporter416 · 07-20-2015, 10:36 PM

They are ridiculously expensive, I thought I blew mine on my mcpx Bl a few weeks ago. Was relieved when I found it was just the tail motor. Otherwise would have chucked the heli...

EmuFarmer · 07-20-2015, 10:38 PM

I only have about a dozen flights on it as well. Got it to fly inside during cold weather. Didn't get much time on it... I'm going to try and inspect the board, see if i can find a broken pin or something. Shot in the dark, but I've got nothing to lose now I guess.

tporter416 · 07-20-2015, 10:46 PM

That is weird, should have lasted longer than that, I have about 500 flights on my mcpx Bl...

07-20-2015, 03:45 PM	#1
EmuFarmer RCC Noob I am: Ian M Join Date: Jul 2015 Location: Courtice, ON Radio of choice: DX6 # of RCs: 8 Feedback: 0 / 0% Posts: 24 Total Props: 0	Nano CPX problem Remove this ad - become a site supporter! My cpx won't take off. When at nearly full throttle and pitch it flips over to the left. The main gear is firmly in place, the spindle is good, servos travel correctly. Anyone have any ideas? Thanks
	.

07-20-2015, 04:58 PM	#2
astrofler RCC Senior Contributor I am: Al E Join Date: Jul 2007 Location: Miford, Nova Scotia Feedback: 7 / 100% Posts: 693 Total Props: 3	Re: Nano CPX problem Any vertical slop in the main shaft. if you hold the heli fuse, can you move the shaftup and down? Sometimes after a bang, the main gear gets pushed down a bit allowing enough play to prevent enough positive pitch to take off. __________________ cheers Papa Sharptooth Bouncing about the living room, my then three year old grandson declared himself "a kangaroo". "If you're a Kangaroo, what is Grampie", I ask. His reply: "you a dinosaur"
	.

07-20-2015, 05:13 PM	#3
EmuFarmer RCC Noob I am: Ian M Join Date: Jul 2015 Location: Courtice, ON Radio of choice: DX6 # of RCs: 8 Feedback: 0 / 0% Posts: 24 Total Props: 0	Re: Nano CPX problem Thanks for the reply. There is no slop. I have the main gear pushed all the way up.
	.

07-20-2015, 07:51 PM	#4
tporter416 RCC Pro Contributor I am: Tom P Join Date: Sep 2012 Location: Toronto, Ontario Radio of choice: Spektrum iX12 # of RCs: 20 Feedback: 28 / 100% Posts: 1,536 Total Props: 13	Re: Nano CPX problem If you put the blades parallel to each other (both aligned with tail boom), turn on throttle hold, does the amount of pitch for up equal that of down? Measure the distance between the ends of the blades, they should be about equal. Tom __________________ SAB Goblin Kraken, SAB Goblin 500, SAB Goblin 420, Oxy 2, 180 Fusion, mCPX BL, mCPX BL2, nano CP S, Freewing F-14, FMS Rafale, Freewing F-5N, Freewing BAE Hawk, FMS F-18, A-10, GP Super Sportster, P-39, Spitfire Mk.IX 1200mm, Dogfighter, FMS F-35, FW F-18, E-Max 250 Quad
	.

07-20-2015, 09:41 PM	#5
EmuFarmer RCC Noob I am: Ian M Join Date: Jul 2015 Location: Courtice, ON Radio of choice: DX6 # of RCs: 8 Feedback: 0 / 0% Posts: 24 Total Props: 0	Re: Nano CPX problem When I put place the blades parallel with the tail boom the blades are side by side when pitch is 50%.
	.

07-20-2015, 10:31 PM	#6
tporter416 RCC Pro Contributor I am: Tom P Join Date: Sep 2012 Location: Toronto, Ontario Radio of choice: Spektrum iX12 # of RCs: 20 Feedback: 28 / 100% Posts: 1,536 Total Props: 13	Re: Nano CPX problem I assume you have no trim or sub trim on your aileron channel in your Tx? Other than that it sounds like your flight controller board is bad... __________________ SAB Goblin Kraken, SAB Goblin 500, SAB Goblin 420, Oxy 2, 180 Fusion, mCPX BL, mCPX BL2, nano CP S, Freewing F-14, FMS Rafale, Freewing F-5N, Freewing BAE Hawk, FMS F-18, A-10, GP Super Sportster, P-39, Spitfire Mk.IX 1200mm, Dogfighter, FMS F-35, FW F-18, E-Max 250 Quad
	.

07-20-2015, 10:33 PM	#7
EmuFarmer RCC Noob I am: Ian M Join Date: Jul 2015 Location: Courtice, ON Radio of choice: DX6 # of RCs: 8 Feedback: 0 / 0% Posts: 24 Total Props: 0	Re: Nano CPX problem Yeah, I even started a new profile to make sure I had nothing funky in there. I am feeling that it's my main board. I guess next step is to find a board that isn't 90% the cost of a new cpx... Thanks for the input on the matter.
	.

07-20-2015, 10:36 PM	#8
tporter416 RCC Pro Contributor I am: Tom P Join Date: Sep 2012 Location: Toronto, Ontario Radio of choice: Spektrum iX12 # of RCs: 20 Feedback: 28 / 100% Posts: 1,536 Total Props: 13	Re: Nano CPX problem They are ridiculously expensive, I thought I blew mine on my mcpx Bl a few weeks ago. Was relieved when I found it was just the tail motor. Otherwise would have chucked the heli... __________________ SAB Goblin Kraken, SAB Goblin 500, SAB Goblin 420, Oxy 2, 180 Fusion, mCPX BL, mCPX BL2, nano CP S, Freewing F-14, FMS Rafale, Freewing F-5N, Freewing BAE Hawk, FMS F-18, A-10, GP Super Sportster, P-39, Spitfire Mk.IX 1200mm, Dogfighter, FMS F-35, FW F-18, E-Max 250 Quad
	.

07-20-2015, 10:38 PM	#9
EmuFarmer RCC Noob I am: Ian M Join Date: Jul 2015 Location: Courtice, ON Radio of choice: DX6 # of RCs: 8 Feedback: 0 / 0% Posts: 24 Total Props: 0	Re: Nano CPX problem I only have about a dozen flights on it as well. Got it to fly inside during cold weather. Didn't get much time on it... I'm going to try and inspect the board, see if i can find a broken pin or something. Shot in the dark, but I've got nothing to lose now I guess.
	.

07-20-2015, 10:46 PM	#10
tporter416 RCC Pro Contributor I am: Tom P Join Date: Sep 2012 Location: Toronto, Ontario Radio of choice: Spektrum iX12 # of RCs: 20 Feedback: 28 / 100% Posts: 1,536 Total Props: 13	Re: Nano CPX problem That is weird, should have lasted longer than that, I have about 500 flights on my mcpx Bl... __________________ SAB Goblin Kraken, SAB Goblin 500, SAB Goblin 420, Oxy 2, 180 Fusion, mCPX BL, mCPX BL2, nano CP S, Freewing F-14, FMS Rafale, Freewing F-5N, Freewing BAE Hawk, FMS F-18, A-10, GP Super Sportster, P-39, Spitfire Mk.IX 1200mm, Dogfighter, FMS F-35, FW F-18, E-Max 250 Quad
	.

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