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Old Sep 10, 2012, 05:10 PM
There's magic in those wings !
khaled_abobakr's Avatar
Joined Nov 2006
4,851 Posts
Try motor calc

http://www.ecalc.ch/motorcalc_e.htm?ecalc

Khaled
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Old Sep 10, 2012, 05:55 PM
Some call me the other guy!
DoctorAudio's Avatar
Milwaukie , Oregon
Joined Feb 2003
4,494 Posts
Okay I went for a smaller motor. More of a lighter one.
The Mega 22/30/3 weighs in at 223 grams. WOW! Over 7 oz.
Pulled a brand new CSRC E25-12 1200kv motor.
Here is the data sheet.
Top speed should be the same.
because looks like I am removing 3 oz from the nose and 2 and a half off the back.
Should make a difference.

Heck I am only loseing about 200 watts.
But this motor weigh in at 150 grams!
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Old Sep 11, 2012, 01:44 AM
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United States, AZ, Gilbert
Joined Nov 2011
92 Posts
Quote:
Originally Posted by Eagle202 View Post
That makes sense to have something that won't crush when you are securing it.

What is the diameter of your clear rod guides so I know what size collars to get?
Dont know the exact diameter but at the hobby shop they are called the "Guide Tubes for 256 and 440 rod" The collars on the end are 3/16" wheel stops
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Old Sep 11, 2012, 01:51 AM
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United States, AZ, Gilbert
Joined Nov 2011
92 Posts
Quote:
Originally Posted by Kloner View Post
are you guys using that as a gimble or just way to keep your case on?
I actually did use it as a gimble. Through a servo behind it and attached it to the box. It worked and tilted the cam about 25degrees down. But the servo was heavy and deff wasnt the best set up. If I do it again Ill move the servo back and bury the rod. I ended up adding a piece of coro to the back of the gopro box as well that protruded out and had the FPV cam attached as well. It was cool, they both tilted together. Ill deff rework this a bit better into another build.
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Old Sep 11, 2012, 03:48 AM
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Mt Tamborine, Queensland, Australia
Joined May 2008
755 Posts
Quote:
Originally Posted by khaled_abobakr View Post
rcadvisor.com also has a free online calculator. You have to create an acct (which is also free).
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Old Sep 11, 2012, 10:08 AM
Aerial DP
United States, CA, Lakeside
Joined Apr 2010
912 Posts
ron, do you have any video out of it? Needs a gyro attached to it, get rid of the fisheye bit on the gopro
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Last edited by Kloner; Sep 11, 2012 at 10:23 AM.
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Old Sep 11, 2012, 01:26 PM
Some call me the other guy!
DoctorAudio's Avatar
Milwaukie , Oregon
Joined Feb 2003
4,494 Posts
Okay guys, I need your help.
Really who has the longest distance flight with a ZII?
Me I am not looking for the distance, I am looking for the time aloft.
I would like to go up and fly as long as I do with my old raidian.
I was able to stay aloft for 2 30min flights.
I know some of the info will depend on the wind and location.
But what is the longest ZII flight?
I would love to duplicate it to see if it matches my needs.
There is a awesome drive over some open country on the way to bend, Oregon.
That I would like to try and fly the full 30 min run at 40 mph.

I will also have a video request.

Has two of you FPV guys flown from two different places. And met up in the middle of the two places. Then follow the other back to his take off spot and land.
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Old Sep 11, 2012, 02:03 PM
"Chuck Yeager"
hotdog1's Avatar
Bradenton FL
Joined Apr 2010
842 Posts
I usualy fly for 25-30 min with 2x 4000mah 4s nanotechs with my ZII doing around 38-40mph
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Old Sep 11, 2012, 02:24 PM
Some call me the other guy!
DoctorAudio's Avatar
Milwaukie , Oregon
Joined Feb 2003
4,494 Posts
With the stock motor?
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Old Sep 11, 2012, 02:28 PM
Aerial DP
United States, CA, Lakeside
Joined Apr 2010
912 Posts
mine did 14 miles at 30-40 with stretches of 50-60 mph and had 1400 mah left out of 6000 of packs leaving the 20% in the tank as well. 3014-12 scorp with 9.5x6 with an ice 75

left bar is the speed, right bottom amp draw... it was windy so it's a little skewed, it's gps speed. starts with a tail wind and by 1 minute shows a headwind.

feelin the bottom (3 min 12 sec)


the google earth download showed it traveled 14 miles and was aloft for 21 minutes
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Last edited by Kloner; Sep 11, 2012 at 09:52 PM.
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Old Sep 11, 2012, 07:26 PM
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Eagle202's Avatar
United States, FL, Clearwater
Joined Aug 2011
1,604 Posts
Quote:
Originally Posted by ronrob61 View Post
Dont know the exact diameter but at the hobby shop they are called the "Guide Tubes for 256 and 440 rod" The collars on the end are 3/16" wheel stops
That works for me. Thanks

Vince
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Old Sep 13, 2012, 01:32 AM
DFC~ We Do Flyin' Right
bsbauman's Avatar
USA, GA, Atlanta
Joined Nov 2008
14,742 Posts
Are most of yall running a 30 or 36 inch DL antenna on your Zephyrs?

Do I get better reception with a longer antenna?
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Old Sep 13, 2012, 02:10 AM
never mind the boll⁣⁣⁣ocks
brosius85's Avatar
Australia, NSW
Joined Dec 2010
1,256 Posts
im using ez uhf. when i was on Mhz though i had a 4m antenna. it was awesome, just a little cumbersome and draggy.
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Old Sep 13, 2012, 10:19 AM
Aerial DP
United States, CA, Lakeside
Joined Apr 2010
912 Posts
no, the shorter the better. most of have the rx out on the end of the wing. The DL antennas length is just how long the wire from the rx to the 1/2 wave dipole.

mine is like this

i'm on ez too, but am using the same antenna you mention,,,
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Old Sep 13, 2012, 06:47 PM
j j
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United States, CA, Santa Clarita
Joined Sep 2012
3 Posts
what do you think the best advance controller is for the zephry 2
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