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Old Oct 03, 2012, 02:52 AM
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Joined May 2012
29 Posts
Hey.

thanks alot! Did help, but motor doesn't fit ;(. http://tinyurl.com/8d53lor just would've been too cool though, no? :P
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Old Oct 13, 2012, 07:32 AM
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Joined May 2012
29 Posts
Hey,

i've just wanted to write a little warning to everyone - in the past days i've tried to get rid of tons of vibrations that made my GCP unflyable after changing the mainframe (i was dumb enough to *accidentally* glue the tailboom to the frame, so when my tailboom broke a few weeks later i couldn't get it out. Ordered new mainframe, built everything into the new one, checked every part so its still smooth, working, bearings good, etc.. I had the worst vibrations ever. So, turns out after a while of debugging, that i got a warped mainframe freshly out of the package *again*. Make this my third(!!) freshly bought heavily warped mainframe.

So, if anyone buys a new mainframe, take your time with a precision angle bracked to check the frame. Also look for hair-cracks near the base of the main-shaft-bearing-mount-pole. Especially check the flatness in the area of the motor-mount and check the angle of swash-plate-holding-pole and main-frame-bearing-mount-pole (oh gawds, having to invent those crazy bad terms since i don't know what its actually called -.-).

If i had did that it would've saved me a lot of trouble, so i thought sharing was no bad idea...

Regards
- ShellFish
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Old Oct 15, 2012, 05:40 PM
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Joined May 2012
120 Posts
Quote:
Originally Posted by ShellFish31 View Post
Hey,

i've just wanted to write a little warning to everyone - in the past days i've tried to get rid of tons of vibrations that made my GCP unflyable after changing the mainframe (i was dumb enough to *accidentally* glue the tailboom to the frame, so when my tailboom broke a few weeks later i couldn't get it out. Ordered new mainframe, built everything into the new one, checked every part so its still smooth, working, bearings good, etc.. I had the worst vibrations ever. So, turns out after a while of debugging, that i got a warped mainframe freshly out of the package *again*. Make this my third(!!) freshly bought heavily warped mainframe.

So, if anyone buys a new mainframe, take your time with a precision angle bracked to check the frame. Also look for hair-cracks near the base of the main-shaft-bearing-mount-pole. Especially check the flatness in the area of the motor-mount and check the angle of swash-plate-holding-pole and main-frame-bearing-mount-pole (oh gawds, having to invent those crazy bad terms since i don't know what its actually called -.-).

If i had did that it would've saved me a lot of trouble, so i thought sharing was no bad idea...

Regards
- ShellFish
Hi there!
I have been having the same issue twice. In first case my pinion was too close to the main gear, there needs to be a little space between them, so you can just try to move motor a little. In second case,rotor head was bad. You can just remove it and see if it helps. If yes you can focus on rotor head and blades.
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Old Oct 15, 2012, 06:45 PM
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COPENHAGEN DENMARK
Joined Aug 2007
263 Posts
Hello
Can one of you help me with the dimension of the stock motor.

Thanks John
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Old Oct 16, 2012, 05:08 AM
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Joined May 2012
29 Posts
Hey Mig_31,

i know that i have/had to set pinion/gear spacing correctly, and i also know that my head is/was okay, here's some images of the warped frame:
http://tmp.kanojo.de/geniuswarpedframe/

do you notice how the motor is bent outwards and backwards? That just can't be right (and on the frame the dealer sent me because this one is/was defective its true, straight and flat...). So from now on i'm going to check first before i go through the hassle of tinkering the components into a new frame ;P. 100% Frame Problem!

Regards
- ShellFish
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Old Oct 16, 2012, 05:54 AM
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Philippines, Calabarzon, San Pedro
Joined Jul 2012
3,624 Posts
@ShellFish32
What ESC are you using? How long have you had that brushless kit?
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Old Oct 21, 2012, 02:29 AM
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Joined May 2012
29 Posts
I do use the original brushless kit from Walkera that everyone hates (including me). Other than most i've got rid of the tailwag (*perfect* adjustment of everything, as the RPM is much higher with the brushless than with the brushed motor, and the tail motor is way less responsive than a brushed (brushless has more moving mass, hence its more inert) combined lead to the fact that every tiny vibration means tail-wag-havoc) and its flyable for me - even when not great. I've had that brushless kit for maybe 5 months now?
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Old Oct 21, 2012, 03:48 AM
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Philippines, Calabarzon, San Pedro
Joined Jul 2012
3,624 Posts
Different case on my C05m. The stock tail actually held a lot more steady with the brushless motor than with the stock motor. And the thing ran cool. The problem is that the ESCs kept burning out!
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Old Oct 22, 2012, 08:22 PM View Post
DLY
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Old Oct 28, 2012, 05:07 PM
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Joined May 2012
29 Posts
Another thing i've just noticed: If replacing wires to the tail (brushless) motor, pay attention to impedance! I've replaced it with enmailled copper wire of the same thickness and had another bad tailwag - now i've used ISDN cable inner leads, works perfect again. Oo
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Old Oct 28, 2012, 08:39 PM
Better then Sliced Bread!
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United States, CA, Arcata
Joined Oct 2011
2,569 Posts
Got my GCP up and running today, it's been down for probably 2 months. Needed a new tail boom, tail motor, servo, and main motor. Luckily I already had a spare servo, however my tail boom assembly finally came in the other day and I fixed that and the servo today. Still waiting on the new main motor to get here (looks like tomorrow), but even with the worn motor on their now I flew it 10 times today hehe.

I love my GCP I just wish they weren't so high maintence!!! I go through a motor a month on average (Though I do usually fly it 10+ times a day when it's running ).
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Old Oct 29, 2012, 07:10 AM
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Philippines, Calabarzon, San Pedro
Joined Jul 2012
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Quote:
Originally Posted by NorCalMatCat View Post
I love my GCP I just wish they weren't so high maintence!!! I go through a motor a month on average (Though I do usually fly it 10+ times a day when it's running ).
10x a day for a month??? How the heck does it last so long???

I actually got my package today. I go through so many of these motors i ordered three hoping i won't need to make another order for a month!
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Old Oct 30, 2012, 03:22 AM
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That thing with the motor somehow doesn't sound right. could you tell us what exact motor, esc, pinion, and pitch angles you are using?
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Old Oct 30, 2012, 08:35 AM
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Philippines, Calabarzon, San Pedro
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All stock. All settings are copied right off what was printed on the A4 manual. First motor was dead within 3 days, a week later, got a replacement motor and that was dead within three days. Last motor was so hot, the frame melted.
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Old Oct 30, 2012, 09:57 AM
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Joined May 2012
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All stock, so still the brushed motor? Theres two things you can check right away - first is taking off the main gear off the main shaft, and check whether everything in the head runs smooth without any resistance (also add a drop of good, fine-mechanics oil on all bearings ;P). If everythings smooth there check the play between the main gear and the motor pinion: you need juuust a tad of play between those, if its really tight you're putting too much load on the motor which would explain the temperature problems. For big helis people put a piece of paper between the two gears and push them tightly against each other, then re-fasten the motor. You are looking for some just-barely-visible play. Hold the pinion tight with one or two fingers, then try to move the main gear. you need to see a little tinsy teensy bit of play there.

Hope i didn't repeat know things for you ;P.

Regards

... also let the motor cool between flights ;P Its brushed
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