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Old Jan 29, 2014, 02:14 AM
"Unappreciative tosser"
eltreato's Avatar
Canada, BC, Vancouver
Joined Oct 2011
560 Posts
New Product
E-Flite Ultra Micro Radian

I came across it just now on the e-fliterc.com website while looking for new releases for the toy show in Nuremberg. It looks like it could be cool.

Info, specs and photos can be found here:

http://www.e-fliterc.com/Products/De...#quickFeatures









Mods, FAQs and other UMX Radian-related info

E-Flite Ultra Micro Radian ** Mods ** thread


Phil Alvirez's battery hatch mod photo and blog:
http://static.rcgroups.net/forums/at...g?d=1397863840
http://www.rcgroups.com/forums/member.php?u=161065

Need replacement wing screws?
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Last edited by eltreato; May 08, 2014 at 06:28 PM. Reason: Added detail
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Old Jan 29, 2014, 03:33 AM
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SilentPilot's Avatar
United Kingdom, Yeadon
Joined Mar 2007
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I've just seen this on Horizon Hobby's website.

Looks good! It's what we've been asking for on the UMX ASK-21 thread
UMX Radian


Tony
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Old Jan 29, 2014, 04:53 AM
Weltherrschaft will be mine
Germany, SN, Leipzig
Joined Nov 2012
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Nice, i built nearly the same , the robbe arcus airy 780 plus v911rx at 55gramms auw and the robbe arcus airy 500 +v911 rx at 37 gramms auw..... I m still searching for cheap but light and efficient folding props....
If it has depron wings, they gonna break soon. I would love to know what gearbox ratio and prop it uses
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Old Jan 29, 2014, 06:06 AM
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I'm not convinced that AS3X will be any good on a 3ch plane...
With all the roll coupling that R/E plane needs the gyros will go nuts!!!
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Old Jan 29, 2014, 07:58 AM
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FlyWW1's Avatar
United States, VA, Winchester
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I can't wait! This should have been made a long time ago. The price is great too.

http://www.horizonhobby.com/products...nf-EFLU2980#t2

UMX™ Radian® BNF by E-Flite (2 min 12 sec)
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Old Jan 29, 2014, 08:11 AM
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Good video

I'd quite like to get one of these and fly it on a gentle ridge (without the prop?)


Tony
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Old Jan 29, 2014, 08:46 AM
Flyer, not a builder ;)
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United States, NC, Harnett County
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OOoh that's cool!
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Old Jan 29, 2014, 08:52 AM
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Champaign. Illinois
Joined Jun 2003
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Quote:
Originally Posted by SilentPilot View Post
Good video

I'd quite like to get one of these and fly it on a gentle ridge (without the prop?)


Tony
Tony,

No need. With the folding prop, just chuck it off a hill and slope away. That way if you want to fly powered, just throttle up!

Matt Andren
E-Flite/Parkzone/Hobbyzone
Horizon Hobby
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Old Jan 29, 2014, 08:55 AM
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Oh yes Matt, but I like a challenge!!

I slope soar my Radian Pro with a tiny battery from my Edge QQ to keep it light. I take the prop off so I can't be tempted to throttle up which could kill the battery in seconds...


Tony
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Old Jan 29, 2014, 09:07 AM
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Mattfly; When do you expect it to be available?
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Old Jan 29, 2014, 09:22 AM
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Originally Posted by harrisdouma View Post
Mattfly; When do you expect it to be available?
Early May
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Old Jan 29, 2014, 10:47 AM
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Quote:
Originally Posted by SilentPilot View Post
I'm not convinced that AS3X will be any good on a 3ch plane...
With all the roll coupling that R/E plane needs the gyros will go nuts!!!
Dunno what these guys have in their glider but I built and flew a Pico Tiger Moth with a gyro oriented 45 degrees that fed the rudder. At 45 degrees it responded to both roll and yaw. Each axis had 0.707 worth of signal. I had the gyro mounted on Velcro. The thing you have to do is MAKE ABSOLUTELY CERTAIN that the rudder moves in the correct direction for both roll and yaw! That's why I mounted my gyro on Velcro.

Did it work? One gusty day our club president commented on how precisely I was flying down the edge of the field. I held up the Tx with one hand and said, "Gyro."

Like I said, I don't know what Horizon is doing but I know my single gyro got me a correct rudder response for both roll and yaw.

Pete
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Old Jan 29, 2014, 10:48 AM
Flyer, not a builder ;)
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United States, NC, Harnett County
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After watching that video again, it sure seems like a little bit of a challenge to fly. I guess that's to be expected with any UMX plane... would have liked to see ailerons on this little guy.
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Old Jan 29, 2014, 10:52 AM
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Elmhurst, NY (Queens in NYC)
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Quote:
Originally Posted by SilentPilot View Post
Good video

I'd quite like to get one of these and fly it on a gentle ridge (without the prop?)


Tony
Rudder only ships tend to roll away from gusts due to the dihedral. Only time will tell if the gyros can compensate for that. My first glider was RE only and I had two memorable crashes due to the tendency to roll away from gusts.

I also watched a rogallo wing hang glider crash for the same reason.(pilot full of adrenalin, hopping from leg to leg and feeling his ribs where he hit and bent one of the down tubes.)

Pete
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Old Jan 29, 2014, 10:56 AM
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Quote:
Originally Posted by PeteSchug View Post
Dunno what these guys have in their glider but I built and flew a Pico Tiger Moth with a gyro oriented 45 degrees that fed the rudder. At 45 degrees it responded to both roll and yaw. Each axis had 0.707 worth of signal. I had the gyro mounted on Velcro. The thing you have to do is MAKE ABSOLUTELY CERTAIN that the rudder moves in the correct direction for both roll and yaw! That's why I mounted my gyro on Velcro.

Did it work? One gusty day our club president commented on how precisely I was flying down the edge of the field. I held up the Tx with one hand and said, "Gyro."

Like I said, I don't know what Horizon is doing but I know my single gyro got me a correct rudder response for both roll and yaw.

Pete
What about the elevator stabilization?
Did you not use any?
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