[solved] breaking motors and having a dent in it

Discussions and questions about the Crazyflie Nano Quadcopter
phiamo
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Posts: 31
Joined: Wed May 08, 2013 11:44 am

[solved] breaking motors and having a dent in it

Post by phiamo » Thu May 09, 2013 3:35 pm

I could cry, second motor had has a dent:
P1030751_small.JPG
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And the tracking code for hong-kong post isnt working, so no idea when the new motors from there arrive :/

But in the Meantime i found these motors:
Mikromotor DC Ø 6 mm * 15 mm 1.2V-4,2Volt M660
Rated voltage: 1.2--4.2V (DC)
No load current: 55mA (max)
No load speed: 47000±2000rpm.
Rated load current: 1050mA(max)
Starting voltage: 0.8V (max)
Terminal Resistance: 2.7±0.5%Ω
Insulation Resistance: 10MΩ
Weight: 1.6g approx

They should be suitable too, no?


But this seems to be especially for beginners like me a likely problem, cause if you get too hard on a wall this happens after some time ;(
So probably we could add some damper inbetween the PCB Arm and the motor like a strip of the double sided tape for the lipo...
Also i was a bit confused about the bottom of the motors, need to attach something there too ...
P1030752_small.JPG
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[update]
use pliers and press on the 90 deg sites of the dent and a bit up and down and around, and you probably get the motor working again ...
i got two of them back alive ;)
Last edited by phiamo on Fri May 10, 2013 11:56 am, edited 1 time in total.



marcus
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Re: End of a Crazyfle Life - extension

Post by marcus » Thu May 09, 2013 9:35 pm

Hi,

Sorry to hear about the motors :( There's a "stop" that has been put in to protect the motor from damages from the PCB arm. The same kind of "stop" has been put in beneath the motor to protect the bottom of the motor/wires when lading/taking off. We will have a look at the design again and see if there are any adjustments that can be made.

One method for extra motor protection can be seen here.

/Marcus

phiamo
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Joined: Wed May 08, 2013 11:44 am

Re: End of a Crazyfle Life - extension

Post by phiamo » Thu May 09, 2013 10:14 pm

Your link is self referencing :(

marcus
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Re: End of a Crazyfle Life - extension

Post by marcus » Fri May 10, 2013 7:30 am

phiamo wrote:Your link is self referencing :(
Sorry about that, here it is

phiamo
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Re: End of a Crazyfle Life - extension

Post by phiamo » Fri May 10, 2013 11:54 am

ah perfect, think i will buit something similar, but anyways after using fine pliers and changing the metal surface of the motor on different places its bein free again and works nearly as before :)

tommyw
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Joined: Mon Feb 25, 2013 10:42 am

Re: End of a Crazyfle Life - extension

Post by tommyw » Fri May 10, 2013 2:15 pm

marcus wrote:Hi,

Sorry to hear about the motors :( There's a "stop" that has been put in to protect the motor from damages from the PCB arm. The same kind of "stop" has been put in beneath the motor to protect the bottom of the motor/wires when lading/taking off. We will have a look at the design again and see if there are any adjustments that can be made.

One method for extra motor protection can be seen here.

/Marcus
Yeah, the stop at the bottom of the motor mounts are not efficient enough; my wires are getting flat from bumpy landings. :lol: Also there doesn't seem to be any stop at all between the arm and the motor.

Maybe something to adjust for the next batch?

tzulan611126
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Posts: 4
Joined: Sat May 11, 2013 2:48 am

Re: [solved] breaking motors and having a dent in it

Post by tzulan611126 » Sat May 11, 2013 3:12 am

I cut some "package bubble" from previous delivery box and put them on each arm of my crazyflie.
IMG_5602x.JPG
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IMG_5603x.JPG
IMG_5603x.JPG (243.49 KiB) Viewed 5232 times
It can provide not only a better protection than a tape but also keep light weight.
I hope this may help saving more lovely crazyflies.

Johnson

marcus
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Re: End of a Crazyfle Life - extension

Post by marcus » Sat May 11, 2013 8:40 am

tommyw wrote:Maybe something to adjust for the next batch?
We will have a look at this and see if we can adjust it.

/Marcus

absoloodle37
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Re: [solved] breaking motors and having a dent in it

Post by absoloodle37 » Sun Jun 09, 2013 11:44 pm

Awesome. Coolest crash protection I've ever seen!

virus.elektro
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Posts: 4
Joined: Wed Aug 14, 2013 11:41 am
Location: Rotterdam, The Netherlands

Re: [solved] breaking motors and having a dent in it

Post by virus.elektro » Thu Sep 19, 2013 7:32 pm

Sorry to bump this topic, but I have another solution for "the dent" problem.
I have added some Styrofoam bits to my crazyflie.
Works well. Image
Image
Image

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