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Jul 16, 2010, 08:04 PM
stuck in ol' Uffni again...
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Dean, dumb question: the white sockets for the green Multiplex connectors... what are they?

Dieter Mahlein, ShredAir
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Jul 18, 2010, 12:07 PM
dare to thermal
Hi Dieter,

i think this will help to understand...
http://www.nessel-elektronik.de/Mehr...en-03-ha-a.gif

Bernd
Jul 18, 2010, 03:50 PM
Registered User
I found them at Hobby Lobby. They come in a package with the 6 pin Multiplex connector.
Jul 18, 2010, 06:25 PM
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Packed up and leaving for Muncie in the morning.
Jul 18, 2010, 07:47 PM
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jtlsf5's Avatar
See ya at summer camp. You know where I'll be.

JT
Jul 18, 2010, 08:44 PM
Master of the Wind
G Norsworthy's Avatar
Good luck, show them how it is done.
Aug 06, 2010, 04:33 AM
Registered User

As I promised


Dean and Beardsley - Finally got the 4600mAh A123 cells in.
The plan 3 flat pack did not work was expected - so modified some stuff and went back to the 2x2 inlines.

Tommorrow we'll see - I moved the CG forward abit as suggested, but reluctant to move the tow hook just yet. So tomorrow will be the test.

FYI - Max current flaps loaded = 1.5A Voltage drop from 6.56DC to 6.12DC so there is alot of resistance in the wires. Need to look into this.

Now with the skid installed nose and tail - I'm at 5012 grams so after all that work it's still fat - gotta look at how much protection the batteries really need etc....
That being said - The LiFe 3200 will give a those grams back, but given the current consumption observed need to look elsewhere - ah hem wire harness to tail section as you did! I'll look up that source.

Here is a snapshot of where it's at now.
Aug 06, 2010, 12:13 PM
yyz
yyz
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yyz's Avatar
Do you have to shave 12 grams plus the weight of a logger and batteries or is it just a matter of shedding nonessentials?

Was this a stock MXC build or have repairs been done?

Mike



Quote:
Originally Posted by jgs99v
Dean and Beardsley - Finally got the 4600mAh A123 cells in.
The plan 3 flat pack did not work was expected - so modified some stuff and went back to the 2x2 inlines.

Tommorrow we'll see - I moved the CG forward abit as suggested, but reluctant to move the tow hook just yet. So tomorrow will be the test.

FYI - Max current flaps loaded = 1.5A Voltage drop from 6.56DC to 6.12DC so there is alot of resistance in the wires. Need to look into this.

Now with the skid installed nose and tail - I'm at 5012 grams so after all that work it's still fat - gotta look at how much protection the batteries really need etc....
That being said - The LiFe 3200 will give a those grams back, but given the current consumption observed need to look elsewhere - ah hem wire harness to tail section as you did! I'll look up that source.

Here is a snapshot of where it's at now.
Aug 07, 2010, 03:03 PM
Registered User
Mike,

Looks like the 72MHz has to go - that will remove the antenna and tubing. It had to happen, now I'm forced to to it sooner. Don't need 22ga wire for the rudder servo - 26ga should suffice - then I should be under by quite a bit. I should be 4750 with the Extrex installed.
Aug 07, 2010, 05:59 PM
Registered User
Jack,
I found that too much landing flap increased servo power consumption alot.
I use a Hangar 9 meter in series and adjust flaps according to power consumption rather than a certain angle. You have to decide for yourself what your comfortable with. It's just the way it is with the MXC. I check all the servos with a meter.

Regards Dean
Aug 08, 2010, 10:53 AM
Registered User
jtlsf5's Avatar
Dean,
How much flap are you getting at the point you have determined is enough current draw? I would suggest 30-45 degrees is plenty for XC, its not a spot landing event. Enough flap to slow the plane down to a managable landing speed is plenty.

JT
Aug 09, 2010, 11:27 AM
Registered User
Dean,

I will experiment with Crow - unfortunately I was not able to test this as I left my toolbox and setup notebook at Davis on Friday :23#$!#4134@#$!#$#$@$@#$@#
But this would provide the largest braking surface with the least amount of current - since it's not only landing you might need this feature. However Beardsley has noted that with his stiff layup he remedied it by cutting the surface of the top skin - it's the live hinge that the servo is attempting to overcome.

JT or any of the Davis guys - please stash my toolbox until next saturday pretty please
Last edited by jgs99v; Aug 09, 2010 at 11:28 AM. Reason: spelling


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