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Old Feb 02, 2012, 04:38 PM
Gets shakes if no FPV in 24hrs
jarod120's Avatar
Joined Dec 2011
418 Posts
Here is the latest Zephyr II to enter the fleet . I had goofed up the motor mount and built the wing upside down. I flipped the mount and finished the build properly. I'm running it with:

Dragon Link
1.2Ghz 300mw vtx
HS 645MG
ET OSD Pro Setup
GoPro Hero2
480 line CCD camera
Stock 1300kv motor and ESC
Graupner 8x6 folding prop
x2 11.1v 2250mah lipos


I vented the ESC cover. It should be enough to make a difference? I used motor magnets to button up the hatches. Everything turned out great! I can't wait to fly her, or enter her into a beauty contest
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Last edited by jarod120; Feb 04, 2012 at 10:13 AM.
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Old Feb 03, 2012, 10:29 AM
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Joined Jan 2011
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I disagree with 4 points.

1. SW is unstable at high speed (100km/hr+)
2. ZII is only difficult to launch if your CoG, throws and trim haven't been dial in correctly yet. It took 7 failed launches before mine were set, and now it launches with a gentle throw.
3. ZII stall speed whilst higher than SW, it is actually quite low.
4. SW tips stalls very easily when throws are too much.

Quote:
Originally Posted by MK3 View Post
These are two VERY different planes. I have both. From what you're saying, it sounds like the skywalker is better suited for you.

Skywalker: Stable flying, slow or fast, low stall speed, ability to sight see with a pan/tilt camera, very long range and endurance, easy to launch, self corrects, will not do stunts unless highly reinforced

Zephyr II: Extremely fast, extreme maneuverability, high stall speed, does not self correct, long range, high altitude, wind resistant, difficult to launch, fixed cam view

IMHO
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Old Feb 03, 2012, 11:42 AM
MK3
Aerial Loitering
MK3's Avatar
Joined Sep 2011
432 Posts
Quote:
Originally Posted by htran View Post
I disagree with 4 points.

1. SW is unstable at high speed (100km/hr+)
2. ZII is only difficult to launch if your CoG, throws and trim haven't been dial in correctly yet. It took 7 failed launches before mine were set, and now it launches with a gentle throw.
3. ZII stall speed whilst higher than SW, it is actually quite low.
4. SW tips stalls very easily when throws are too much.
I never contradicted your points...

But for the sake of debate, yes on #2 but you can't deny it's still much more difficult to launch than SW
#3 I agree but it's still higher, that was my point
#4 ZII flat spins if flown incorrectly at low speeds
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Old Feb 03, 2012, 08:51 PM
never mind the boll⁣⁣⁣ocks
brosius85's Avatar
Australia, NSW
Joined Dec 2010
1,256 Posts
a flat spin with a ZII !!!??? now that i would love to see
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Old Feb 04, 2012, 02:11 AM
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Joined Apr 2008
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Quote:
Originally Posted by htran View Post
I disagree with 4 points.

1. SW is unstable at high speed (100km/hr+)
2. ZII is only difficult to launch if your CoG, throws and trim haven't been dial in correctly yet. It took 7 failed launches before mine were set, and now it launches with a gentle throw.
3. ZII stall speed whilst higher than SW, it is actually quite low.
4. SW tips stalls very easily when throws are too much.
So about point 2 what is your advice (setup) to succed the first or two time launches ?
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Old Feb 04, 2012, 06:06 AM
I'd FPV it.
Ho-Jazz's Avatar
United States, GA, Winder
Joined Nov 2009
2,842 Posts
^^^...COG at 9 3/8". Trim elevons flush with top of wing, then a few clicks up trim. 5 flights so far on mine, and it only has touched the ground when I land. Great lil wing!
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Old Feb 04, 2012, 06:30 AM
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Quote:
Originally Posted by Ho-Jazz View Post
^^^...COG at 9 3/8". Trim elevons flush with top of wing, then a few clicks up trim. 5 flights so far on mine, and it only has touched the ground when I land. Great lil wing!
Isn't it suppose to be flush with the bottom?
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Old Feb 04, 2012, 11:34 AM
I'd FPV it.
Ho-Jazz's Avatar
United States, GA, Winder
Joined Nov 2009
2,842 Posts
I believe it's the top. For what it's worth, that's how I did mine and it's flying great. I think I saw CK post up the same info somewhere.
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Old Feb 04, 2012, 12:16 PM
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United Kingdom, England, Darlington
Joined Feb 2011
23 Posts
Freshmint,

From the boss man himself, the maker of all things Zephyrish....

http://www.rcgroups.com/forums/showp...postcount=1086

Hope this helps...

PK
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Old Feb 05, 2012, 07:38 AM
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Quote:
Originally Posted by freshmint View Post
Isn't it suppose to be flush with the bottom?
No it's not, that's why I had the 6 crashes on launch.

According the Chris (who designed the wing), it should be flush with the TOP not he bottom, with a few clicks of up trim.
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Old Feb 05, 2012, 07:42 AM
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Quote:
Originally Posted by MK3 View Post
I never contradicted your points...

But for the sake of debate, yes on #2 but you can't deny it's still much more difficult to launch than SW
#3 I agree but it's still higher, that was my point
#4 ZII flat spins if flown incorrectly at low speeds
How is this for an effortless launch, no running start, no gold medal throw, just a gentle throw. No wobbling, no stall, smooth smooth smooth

http://vimeo.com/35242772
http://vimeo.com/35426882
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Old Feb 06, 2012, 12:30 AM
N00b
Boise
Joined Mar 2009
974 Posts
I had my maiden flight today, and 2 more after that!

Ritewing Maiden (0 min 46 sec)


Ugh, I feel so dumb.. video makes me laugh though... picked a classic inspirational tune when nothing at all happens... I wonder why it kept going left. I was balancing it on my finger and CG felt perfect both straight and laterally...

EDIT: or my brother and friend just need a little more throwing practice?
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Old Feb 06, 2012, 02:35 AM
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Locko's Avatar
Australia, WA
Joined Oct 2011
555 Posts
Quote:
Originally Posted by dr_patso View Post
I had my maiden flight today, and 2 more after that!

http://vimeo.com/36262921

Ugh, I feel so dumb.. video makes me laugh though... picked a classic inspirational tune when nothing at all happens... I wonder why it kept going left. I was balancing it on my finger and CG felt perfect both straight and laterally...

EDIT: or my brother and friend just need a little more throwing practice?
Should look at early posts how to launch. Its a very easy one man launching Wing.
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Old Feb 06, 2012, 02:40 AM
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Boise
Joined Mar 2009
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Quote:
Originally Posted by Locko View Post
Should look at early posts how to launch. Its a very easy one man launching Wing.
i've seen all those. launching over the head seemed way too hard to actually launch it at the right angle for a first timer. I didn't think about this but i guess the plane would be easier to hold while it's going full throttle getting ready to be hurled over your head...
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Last edited by dr_patso; Feb 06, 2012 at 02:48 AM.
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Old Feb 06, 2012, 02:43 AM
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Australia, WA
Joined Oct 2011
555 Posts
Quote:
Originally Posted by dr_patso View Post
i've seen all those. launching over the head seemed way too hard to actually launch it at the right angle for a first timer.
I did the way in the video below, which most people who fly Z1 and z2 launch there wings.
It seem hard , but its not. I did it on my first wing launch. Easy as bro.

launching a zephyr (0 min 47 sec)
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