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Ecaf's blog
Posted by Ecaf | Jul 28, 2008 @ 07:56 PM | 4,006 Views
This is how I have my Dragonus head set up. I use a CNC center hub, and plastic grips. No thrust bearings, or spacers in the center hub itself.

The key to keep the Orings from riding up over the spacer on the spindle is to use a very thin flexible washer. I use a Blade CP head shim and it works perfectly. 3mm ID, and VERY flexible yet stiff enough to keep the Orings in place.

Setup from Hub out: Oring-Oring-Washer-Spacer-Bearing-plastic spacer-Bearing.

Full size photos can be seen here: http://www.smugmug.com/gallery/55618...40801637_49SsH
Posted by Ecaf | Mar 09, 2008 @ 04:08 PM | 3,552 Views
New pic....
Posted by Ecaf | Mar 05, 2008 @ 07:10 AM | 3,721 Views
Did some winter flying on a warm (relatively) day last Sat.

Dragonus flying 3-1-2008 (5 min 14 sec)

Posted by Ecaf | Feb 17, 2008 @ 03:27 PM | 3,846 Views
Here is my ESC config. The pics show my main and alternate menu settings. I have 2 settings on my TX. Normal mode with a throttle curve of 0-75-75-75-75 and ID1 with a Throttle curve of 95-92-90-92-95. I use the soft spoolup feature in the ESC to start the blades going. I advance the throttle to 50% (0 pitch) and switch to ID1. I wait until the blades are at full speed to take off.

Landing is simply setting down in ID1 and hitting throttle hold.

The Eagletree data pic is with High timing, flat throttle curve, and Radix main and K&B tail blades. 2 different throttle settings to see my amp draw at different head speeds. All I can say about the Radix blades is WOW!
Posted by Ecaf | Feb 11, 2008 @ 08:18 PM | 4,028 Views
Latest pic with the new blades.
Sticky: Balanced blades
Posted by Ecaf | Feb 11, 2008 @ 07:08 PM | 4,467 Views
So after lots of people asking questions in the Dragonus Forum on how to balance their blades to eliminate vibes, I thought it might be time to write a howto on how I do mine.

I have 2 balancers that I use.
Heli-Max Heli Blade Balancer
Dubro Truspin Prop Balancer
The blade balancer is to get the C/G right and correct large issues with blade weights. The Dubro Truspin is to set up the whole head (paddles, grips, and blades when installed). I found this to be the best method to get my blades done perfectly.

Step 1 - Blade C/G. Using my Helimax Blade Balancer, I put both blades on and mark the C/G (Pic 1). I then check the blades to make sure they have the same C/G (Pic 2). If they are not, we will add weight to the lighter of the 2 blades (next step).

Step 2 - Blade balance. Using my Helimax Balancer, I first zero it out WITH the clip installed (Important!) (Pic 3). I then install the blades and find out which one is light (Pic 4). If they are off, I add a little tape to the bottom of the light blade at the C/G (Pic 5). If the C/G was incorrect, add tape the the light blade so that is helps correct the C/G. For example, if the light blade C/G is closer to the root than that of the heavy blade, add the tape slight farther out.

The blades should be right on when done (Pic 6).
Note: this is only temporary. I do my final weight settings later with the whole head.
Step 3 - Using my Dubro Truspin, I balance the paddles using a the complete head with swash...Continue Reading
Posted by Ecaf | Jan 13, 2008 @ 05:21 PM | 4,396 Views
I finally decided to do some decent photos of the Dragonus. Im really proud of this heli and how well it performs. Loads of fun...

Originals here: http://www.smugmug.com/gallery/4162081...Continue Reading