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Trwirth · 02-23-2017, 07:12 AM

Hi

Have completely enjoyed the last 6 weeks flying my new Nano in the living room and am progressing quite nicely.

But it has a trait that puzzles me. Almost every flight some time during it does what I can only describe as a "convulsion"

It does a pronounced shake and then everything is back to normal.

Has that been described before by anyone and is that just part of the bird? Or is mine sick?

Vstrom_guy · 02-23-2017, 11:14 AM

I had a similar problem a while ago. I couldn't seem to figure it out until I was changing out the frame one day. While doing an inspection of the servos I found some of the teeth on the gears where a bit smooshed over. This would cause the servo to stick until an input that took it past the messed up gear. I took an xacto knife to clean the edges of the teeth up. This seems to have solved most of the problems with what i believe you are describing. Hope this helps.

Bhujang · 02-23-2017, 11:31 AM

Wet dog syndrome. Time to service a few parts I'd say. I'd check the fs first to do so you will have to take the head apart so can check the head, dampeners and blade grips for wear or cracks. Swash might need checking that the arms arnt bent or cracked I'm sure the bearings in main blade grips and swash as well as main bearings could do with an oil after 6 weeks. Play in the main bearings might also cause this. Another thing that can cause this is the servos getting dirty so cleaning them is essential. Switch cleaner or isopropanol works great.

Trwirth · 02-23-2017, 01:08 PM

it's really not something new but.....been there all along from day 1. I am really asking is that something that is in the Nano or only in mine?

And...maybe I was embellishing a bit, it's more like a sudden quick twitch for just a split second and also not all the time, maybe once in the length of a pack.

Bill_A · 02-25-2017, 06:46 AM

This is a known problem with the 3in1. This thread mentions it was reported when the CPS was released.

https://www.helifreak.com/showthread.php?t=729598

It happens on mine almost every flight.

Bill

Trwirth · 02-25-2017, 07:20 AM

it's exactly as described. Sooooo.......is there a remedy or do I just live with it as a acceptable quirk?

02-23-2017, 07:12 AM	#1 (permalink)
Trwirth Registered Users Join Date: Jan 2013	Wierd Symtom Hi Have completely enjoyed the last 6 weeks flying my new Nano in the living room and am progressing quite nicely. But it has a trait that puzzles me. Almost every flight some time during it does what I can only describe as a "convulsion" It does a pronounced shake and then everything is back to normal. Has that been described before by anyone and is that just part of the bird? Or is mine sick?

02-23-2017, 11:31 AM	#3 (permalink)
Bhujang Registered Users Join Date: Nov 2012	Wet dog syndrome. Time to service a few parts I'd say. I'd check the fs first to do so you will have to take the head apart so can check the head, dampeners and blade grips for wear or cracks. Swash might need checking that the arms arnt bent or cracked I'm sure the bearings in main blade grips and swash as well as main bearings could do with an oil after 6 weeks. Play in the main bearings might also cause this. Another thing that can cause this is the servos getting dirty so cleaning them is essential. Switch cleaner or isopropanol works great. __________________ Oxy 2 FE, 180cfx spartan lynx pro tail,130x stock, Goosky S1 x 2 , mcpx stock x2, mcpx bl mod, nano cpx dbl bl, nano cpx wild bl, nano cps, DX8. For fpv Phantom 3 pro.

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02-23-2017, 11:14 AM	#2 (permalink)
Vstrom_guy Registered Users Join Date: Oct 2016	I had a similar problem a while ago. I couldn't seem to figure it out until I was changing out the frame one day. While doing an inspection of the servos I found some of the teeth on the gears where a bit smooshed over. This would cause the servo to stick until an input that took it past the messed up gear. I took an xacto knife to clean the edges of the teeth up. This seems to have solved most of the problems with what i believe you are describing. Hope this helps.

02-23-2017, 01:08 PM	#4 (permalink)
Trwirth Registered Users Thread Starter Join Date: Jan 2013	it's really not something new but.....been there all along from day 1. I am really asking is that something that is in the Nano or only in mine? And...maybe I was embellishing a bit, it's more like a sudden quick twitch for just a split second and also not all the time, maybe once in the length of a pack.

02-25-2017, 06:46 AM	#5 (permalink)
Bill_A Registered Users Join Date: Apr 2011	This is a known problem with the 3in1. This thread mentions it was reported when the CPS was released. https://www.helifreak.com/showthread.php?t=729598 It happens on mine almost every flight. Bill

02-25-2017, 07:20 AM	#6 (permalink)
Trwirth Registered Users Thread Starter Join Date: Jan 2013	it's exactly as described. Sooooo.......is there a remedy or do I just live with it as a acceptable quirk?

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