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Old Feb 23, 2013, 08:00 AM
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Is it bad to have anything sitting on top of the naza? Such as the Tx RX?
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Last edited by v00d0o; Feb 23, 2013 at 10:18 AM.
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Old Feb 23, 2013, 08:44 AM
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T J Gilbert's Avatar
United States, MS, Ridgeland
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Probably...

Quote:
Originally Posted by v00d0o View Post
Is it bad to have anything sitting on top of the naza? Such as the Tx?
My gut feeling is that putting the receiver on top of the Naza is not good.
The same goes for anything else being attached to the top of the FC.
I've never seen it done.
FWIW, my receivers are really close, but not touching my Naza FCs.
I've also got bundles of wires in close proximity as the FC is loaded with wire connections...
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Old Feb 23, 2013, 10:10 AM
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Quote:
Originally Posted by v00d0o View Post
Is it bad to have anything sitting on top of the naza? Such as the Tx?
Interesting idea, attach the transmitter to the quad. Then you'd always be in range.
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Old Feb 23, 2013, 10:18 AM
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Quote:
Originally Posted by kallend View Post
Interesting idea, attach the transmitter to the quad. Then you'd always be in range.


woops!

Meant Rx
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Old Feb 23, 2013, 10:29 AM
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Come On, Doc...

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Originally Posted by kallend View Post
Interesting idea, attach the transmitter to the quad. Then you'd always be in range.
Give the kid a break!
We know what he meant.
At least he's trying to learn to fish...
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Old Feb 23, 2013, 10:52 AM
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Quote:
Originally Posted by T J Gilbert View Post
Give the kid a break!
We know what he meant.
At least he's trying to learn to fish...
to you, grumpy old man.



(I teach engineering, where miscommunication kills. Remember the Kansas City Hyatt walkway disaster?)

Besides, kids don't need breaks, he'll still be around when you and I are long gone.
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Old Feb 23, 2013, 11:07 AM
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Watch It!

Quote:
Originally Posted by kallend View Post
to you, grumpy old man.



(I teach engineering, where miscommunication kills. Remember the Kansas City Hyatt walkway disaster?)

Besides, kids don't need breaks, he'll still be around when you and I are long gone.
We're both old farts, but you're older than I am...
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Old Feb 23, 2013, 11:14 AM
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An Old Man's Woes


An sad, old man sitting was sitting on a park bench when along came a police officer. The officer asked the old man why he was so upset.

The old man replied, "Every morning I wake up with a wonderful 20 year old blonde. She cooks great meals including sausage, and bacon and everything I love. Then we make passionate love in bed. Afterwards, she gives me a bath, with handdrawn hot water, cooks me lunch and followed by more passionate love. In the evening, we'll have top the day off with a fantastic diner and yet more wonderful love.

The police officer gets a puzzled look on his face and asks, "Well, what seems to be the problem?"

The old man replied with a sad look on his face, "I can't remember where I live!"
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Old Feb 23, 2013, 11:54 AM
Doing stuff since 1902.
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France, RA, Grenoble
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Hey oldies !

Slow week-end here, terrible weather, a lot of wind, for both RC and skiing... and whatever else outside, so I reworked my F450, removed the FPV gear because I don't use it that much, and reworked the GoPro mount, its now the F450 KOMPACT® Version 3 !



The landing gear from a small T-Rex heli, and nylon spacers :



Very small clearance for the cam, but it's enough. I could add another lenght of spacers, if needed :



This is a partial old bottom plate, and I trimmed a good bit off the (real) bottom plate :



GoPro sticker, gives an extra +25% power bonus, and +35% crash resistance :

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Old Feb 23, 2013, 11:59 AM
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nice setup Olivier - are you getting any props in your gopro FOV?
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Old Feb 23, 2013, 12:00 PM
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@Olivier_C

Nice!!!
Weather here is the pits also.
We're floating away!
My flying field is a mud hole...
We've had over 12" of rain here this month.

Damn, where did I put those GoPro stickers?
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Old Feb 23, 2013, 01:26 PM
Doing stuff since 1902.
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"Some say, if you put 2 GoPro stickers you can even fly inverted..."

Quote:
Originally Posted by Glenstr View Post
nice setup Olivier - are you getting any props in your gopro FOV?
With the camera angled 0°, yes.
But thats with huge 10" graupners, and I don't like how it flies with a 4S pack, so it will be less noticable with my standard 9" :



If I angle the camera a tiny bit downward (like 5°) its fine, even with 10" :
Worth noting, my T2216 motors are about 10mm higher than the stock DJI motors, helps clearing the view.



I had to off-center to avoid the right arm, but not too much to not mess the COG.
The GPS is the opposite side, compensating a tiny amount.

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Old Feb 23, 2013, 01:28 PM
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Nice looking quad! I've always wondered how do you find the exact CG? Is it all just trial and error/ counterbalancing something heavy in the front with something in the back?

Thanks!
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Old Feb 23, 2013, 01:40 PM
Doing stuff since 1902.
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Trial and error, by puting fingers below the top frame.
With the camera the LiPo is far back, with no cam it's a tiny bit forward.
I have the VUmeter and the RX at the very back to anticipate the GoPro
Also I place the battery wires and plugs on the back on purpose, every bit helps

Last stuff (sorry I'm cackling like an old lady ), I put some velcro, the side with the hooks, to avoid the LiPo sliding and killing the COG. I know some people put both sides for the same result (1 on frame, 1 on the batt), but I like my lil' foam mount to keep the battery inline, and it happens that the hooked-side grips perfectly on this foam...

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Old Feb 23, 2013, 01:40 PM
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Check Your CoG

Quote:
Originally Posted by v00d0o View Post
Nice looking quad! I've always wondered how do you find the exact CG? Is it all just trial and error/ counterbalancing something heavy in the front with something in the back?

Thanks!
v00d0o if you have not checked your CoG in the X-Y plane, it could be contributing to the drift problems you have been having.
Suspend the airframe from the center point (where the centerlines of the arms intersect) some how.
You could use string, battery strap, etc.
You can even do this upside down.
If you're out of balance, move things to correct.
If you keep your layout of components fairly symmetrical, you'll probably be able to just move the battery to get a balance.
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