Park Flyers & Backyard Flyers Discuss RC Parkflyers and rc backyard flyers in this forum

Cox Micro A6M Zero

Reply
Old 04-03-2007, 02:00 PM
  #1
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Cox Micro A6M Zero

Hello,

This will be my first build log in a while, so stick with me.

Equipment;
Bare airframe = 40g (1.4 oz)
CDROM outrunner + aluminum mount = 12g
2 X GWS pico servos = 16g total
GWS pico Rx = 4.4g
CC Pheonix 10 = 6g
TP 2S 860mah = 45g

Total = 125 grams(4.4oz)
Attached Thumbnails
Click image for larger version

Name:	Mk26786.jpg
Views:	10
Size:	53.0 KB
ID:	656161   Click image for larger version

Name:	Av69194.jpg
Views:	4
Size:	22.0 KB
ID:	656162  
micronut is offline  
Reply With Quote
Old 04-03-2007, 02:03 PM
  #2
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

I'll start with the elevator, as per the instructions(which are very nice, BTW).
I used the supplied torque rod to connect the two elevator halves and added a control horn to the middle of the rod.

All controls will be internal on this model(nothing exposed but the antenna).[8D]
I wasn't over impressed by the way the elevators were cut from the stab, but its minor.
I would have preferred to cut them myself for a cleaner look.
Attached Thumbnails
Click image for larger version

Name:	Nl30696.jpg
Views:	8
Size:	26.5 KB
ID:	656163   Click image for larger version

Name:	Dy78448.jpg
Views:	7
Size:	28.7 KB
ID:	656164   Click image for larger version

Name:	Ns44922.jpg
Views:	10
Size:	16.6 KB
ID:	656165   Click image for larger version

Name:	Wq43413.jpg
Views:	7
Size:	15.3 KB
ID:	656166  
micronut is offline  
Reply With Quote
Old 04-03-2007, 02:04 PM
  #3
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

Here is a pic of the motor mount.
It is made from 1mm aluminum stock and weighs next to nothing.

I added a carbon spar to the nose which runs from behind the motor mount to over the top of the wing.
May be excessive, but with the 200g's or so of thrust I'm going to put in her, I wanted to be safe.
Attached Thumbnails
Click image for larger version

Name:	Om34464.jpg
Views:	4
Size:	27.1 KB
ID:	656167   Click image for larger version

Name:	Fa87298.jpg
Views:	5
Size:	23.4 KB
ID:	656168   Click image for larger version

Name:	Qv54299.jpg
Views:	4
Size:	39.9 KB
ID:	656169  
micronut is offline  
Reply With Quote
Old 04-03-2007, 02:06 PM
  #4
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

On to the main wing...

First of all, that crazy dihedral has to go.
There is a lot![X(]

I started by removing the belly pan from the wing very carefully with a sharp pocket knife(I feared that a razor would cause more probs than its worth).
I came off fairly cleanly with little damage to the foam.
I then slit the wing down the middle, leaving a bit of foam uncut at the LE and TE to keep the wing in one piece.

Next, I cut small slots for the 2mm carbon wing spar and epoxied it in flush with the wing.
I left a few degrees of dihedral in(about 1cm elevation at each tip from level) for some stability. I also had to insert a shim between the belly pan and wing since I removed so much of the dihedral.
Likewise, the fuses wing socket had to be altered(sanded) to accomodate the new wing.
Attached Thumbnails
Click image for larger version

Name:	Ig11670.jpg
Views:	3
Size:	31.3 KB
ID:	656176   Click image for larger version

Name:	Aw70640.jpg
Views:	3
Size:	45.8 KB
ID:	656177   Click image for larger version

Name:	Bg93463.jpg
Views:	4
Size:	81.4 KB
ID:	656178  
micronut is offline  
Reply With Quote
Old 04-03-2007, 02:09 PM
  #5
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

My camera crapped out on me, so I apologize for the webcam pics to come.

For the ailerons, I opted for torque rods as well.
Nothing fancy here...just the same type of setup others have used.
The TR tubes are flush with the underside of the wings...nothing exposed.

Here are some horible pics...sorry.
Attached Thumbnails
Click image for larger version

Name:	Pn36315.jpg
Views:	4
Size:	76.4 KB
ID:	656179   Click image for larger version

Name:	Fa85123.jpg
Views:	5
Size:	68.3 KB
ID:	656180   Click image for larger version

Name:	Wb75085.jpg
Views:	7
Size:	84.2 KB
ID:	656181   Click image for larger version

Name:	Xr46589.jpg
Views:	4
Size:	66.6 KB
ID:	656182   Click image for larger version

Name:	Do80951.jpg
Views:	5
Size:	91.1 KB
ID:	656183  
micronut is offline  
Reply With Quote
Old 04-03-2007, 02:12 PM
  #6
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

Almost done!
Motor is mounted, elevator servo is in place, batt tray installed.

All that is left is rudder installation and cutting the battery/electronics hatch before attaching the two halves.
Attached Thumbnails
Click image for larger version

Name:	Ge94141.jpg
Views:	5
Size:	92.1 KB
ID:	656184   Click image for larger version

Name:	Yt63110.jpg
Views:	4
Size:	83.6 KB
ID:	656185   Click image for larger version

Name:	Bg93651.jpg
Views:	5
Size:	71.1 KB
ID:	656186   Click image for larger version

Name:	Tm30184.jpg
Views:	6
Size:	69.0 KB
ID:	656187   Click image for larger version

Name:	Yj65075.jpg
Views:	5
Size:	90.1 KB
ID:	656188   Click image for larger version

Name:	Nd53998.jpg
Views:	9
Size:	95.4 KB
ID:	656189  
micronut is offline  
Reply With Quote
Old 04-04-2007, 02:32 PM
  #7
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

I will try to replace these photos asap.
Until then, I hope they will do.

These pics show the battery/electronics hatch that I cut.
Used a very sharp xacto knife and cut slowly.
The batt tray has been converted to rails on either side of the fuse to allow for the removal of the motor and pheonix 10(which rests under the battery).

The hatch is retained at the front and rear.
The front has a horizontal cf rod which mates into a piece of heat shrink tubing(red in pic) mouted in the nose of the fuse.
The rear uses a custom made spring clip mounted onto the canopy which latches over a cf rod on the fuse.
Attached Thumbnails
Click image for larger version

Name:	Db84838.jpg
Views:	6
Size:	88.5 KB
ID:	656852   Click image for larger version

Name:	Mh19628.jpg
Views:	4
Size:	71.2 KB
ID:	656853   Click image for larger version

Name:	Xd81034.jpg
Views:	3
Size:	80.5 KB
ID:	656854   Click image for larger version

Name:	Hb80053.jpg
Views:	8
Size:	46.7 KB
ID:	656855   Click image for larger version

Name:	Eq87578.jpg
Views:	3
Size:	95.8 KB
ID:	656856   Click image for larger version

Name:	Uk78166.jpg
Views:	4
Size:	64.3 KB
ID:	656857   Click image for larger version

Name:	Bd66156.jpg
Views:	4
Size:	54.1 KB
ID:	656858   Click image for larger version

Name:	Qp52081.jpg
Views:	4
Size:	63.5 KB
ID:	656859  

micronut is offline  
Reply With Quote
Old 04-04-2007, 02:33 PM
  #8
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

All done except for decals!
Attached Thumbnails
Click image for larger version

Name:	Pn37564.jpg
Views:	4
Size:	74.4 KB
ID:	656861   Click image for larger version

Name:	Kf12141.jpg
Views:	6
Size:	91.1 KB
ID:	656862  
micronut is offline  
Reply With Quote
Old 04-04-2007, 08:36 PM
  #9
packyj
 
Join Date: May 2006
Location: Lafayette, IN
Posts: 285
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

Nice thread, good looking build. Hopefully the zero cg is a little closer than my brothers fw190. At the designated cg it was way too tail heavy to be controllable.
packyj is offline  
Reply With Quote
Old 04-07-2007, 01:32 PM
  #10
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

As promised...

Here are some finished pics of my Zero(notice the lack of control horns or rods).
I have some bench test video as well, but I cant seem to get it off my new camera.
Need to download some codecs

AUW 130 g(4.5 oz)
TP 2S 860mah
20mm CDROM wound 12t, 26g, "Y"
WOT = 210g of thrust at 5.5 amps, 7.4v for roughly 40 watts(128 w/lbs)

Have not maidened yet...I'm too scared.
Attached Thumbnails
Click image for larger version

Name:	Ay74298.jpg
Views:	8
Size:	156.2 KB
ID:	659036   Click image for larger version

Name:	Xs59565.jpg
Views:	5
Size:	175.9 KB
ID:	659037   Click image for larger version

Name:	Kp33757.jpg
Views:	5
Size:	174.4 KB
ID:	659038   Click image for larger version

Name:	Kd88862.jpg
Views:	5
Size:	140.5 KB
ID:	659039   Click image for larger version

Name:	Do83173.jpg
Views:	8
Size:	114.8 KB
ID:	659040   Click image for larger version

Name:	Xo89450.jpg
Views:	9
Size:	56.2 KB
ID:	659041   Click image for larger version

Name:	Np17147.jpg
Views:	4
Size:	50.5 KB
ID:	659042   Click image for larger version

Name:	Po49936.jpg
Views:	5
Size:	180.7 KB
ID:	659043  

micronut is offline  
Reply With Quote
Old 04-09-2007, 06:30 PM
  #11
micronut
Thread Starter
 
Join Date: Feb 2005
Location: Falls City, NE
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Cox Micro A6M Zero

Here is a video shot today...by me...while flying.
Hope it stays up

[link=http://www.rcgroups.com/forums/showthread.php?t=669369#post7244928]vid[/link]
micronut is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 02:29 PM.