Parkzone Radian. - Page 791 - RC Groups
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May 12, 2012, 10:35 AM
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STEELINOX's Avatar
Quote:
Originally Posted by Radio.Active
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May 12, 2012, 01:00 PM
Tossing planes into the snow
Quote:
Originally Posted by qwerty11
My radian nose dived about 8 feet after hitting a tree. It compressed the front part of the fussalage foam a little. Nothing major, probably about a quarter inch of compression. Is there any method to getting the compression out?
If you haven't already done so, it would be a good idea to closely inspect the prop, spinner, and motor mount just to make sure everything is tight and there are no hairline cracks.
May 12, 2012, 03:58 PM
Foam flogger
Interesting day flying. Went out at about 11 which typically means lift is hard to find but when i do its strong. Today was different in that i had my telemetry module connected to my thermal scout. Usually i just turn it on to confirm im in a thermal, but today it was set up to alarm fkr lift and sink. What i discovered was that there was a lot more lift than i realized, it was just small and fast moving. Like lots of little dust devils. Tough to work with a radian but makes me eager to finish my dlg build.
May 12, 2012, 04:00 PM
Gravity? No, the Earth sucks
scottdearinger's Avatar
Quote:
Originally Posted by qwerty11
My radian nose dived about 8 feet after hitting a tree. It compressed the front part of the fussalage foam a little. Nothing major, probably about a quarter inch of compression. Is there any method to getting the compression out?
the plane hit the tree? yeah mine has done that before- darn planes anyway- mind of thier own sometimes-
May 12, 2012, 04:06 PM
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Last edited by Radio.Active; Jun 13, 2013 at 09:39 AM.
May 13, 2012, 07:21 AM
Registered User
I am surprised that you have gotten no help on repairing your crash damage. There has been a lot of discussion on the Forum about using hot water to reshape foam, and recall seing a long detailed tutorial about it not long ago. Sorry I do not have a link but hopefully someone else will.
May 13, 2012, 07:30 AM
Proud member of LISF and ESL
Taking twists and warps out of foam
https://www.rcgroups.com/forums/show...ostcount=11127
May 13, 2012, 07:52 AM
Closed Account
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Last edited by Radio.Active; Jun 13, 2013 at 09:39 AM.
May 13, 2012, 06:32 PM
Gravity? No, the Earth sucks
scottdearinger's Avatar
Flew our radians over the metro area today- made about 1000 feet over downtown Des Moines- our largest building is 630 feet-the movie edit crew hard has been drinking beer and should be fired- if only it was a paid position I will try and kick 'em into gear...
May 14, 2012, 04:53 AM
Registered User
Jenne's Avatar
Just a few words about my once forgotten love... The Radian (MK1). Two and a half years ago the Radian was one of my first planes I started flying with. You know what follows - you get bored, search for the pefect flyer while you progresse and people tell you "it has to have ailerons, man!". So your hangar grows and grows. The Radian get's sold.

I ended up flying F3K most of the time today. But I was looking for something I could just throw into the car and fly wherever I like in the wild or when my shoulder hurts I remembered the good old days with my Radian und just hit the purchase button on a special price offer. Yesterday was its maiden and I totally love it (again!). It's funny as you progress with your flying and thermaling skills you get to know the Radian from a totally new perspective. I can recommend even if you think mouldies and ailerons is the only way to go to give it a try. I'm glad I found the Radian again and will surely enjoy flying it this summer.
May 14, 2012, 07:01 AM
Gravity? No, the Earth sucks
scottdearinger's Avatar
Way to go Jenne...Welcome back !!!!

Hey guys- This video is cool- and funny !

I SMACK MYSELF IN THE BALLS ON THE ATTEMPTED HAND CATCH

we fly over the metro area and the Iowa Cubs ball park....

Radians Soar over Metro Des Moines and a crotch crash.wmv (6 min 39 sec)
May 14, 2012, 11:27 AM
Tossing planes into the snow
It is amazing the sacrifices men will make just to keep the underside of their plane free from road-rash. Your buddy made the right choice.

Here is a video that validates the picture you uploaded that shows the tail-flex during a hand catch. I took this video today of my Radian Pro doing a less-than-perfect landing. You can see the amount of tail flex that occurred even though the landing was not all that terrible. The picture shows the carbon rod I inserted into the underside of the rear fuselage. The 2 vertical pieces were intended to reduce the torsional twisting of the fuselage, and they did help. After doing the mod, I found the rudder to be more responsive.

As the video shows, it was not enough. If I were to do it again, the CF rod would be longer and stiffer and fatter like Scott's, and, well, you know what I mean...whatever it takes to keep her happy.

Radian Pro tail flex (0 min 45 sec)
Last edited by Jovanx; May 14, 2012 at 02:34 PM.
May 14, 2012, 04:44 PM
Registered User
STEELINOX's Avatar
Quote:
Originally Posted by Jovanx
It is amazing the sacrifices men will make just to keep the underside of their plane free from road-rash. Your buddy made the right choice.

Here is a video that validates the picture you uploaded that shows the tail-flex during a hand catch. I took this video today of my Radian Pro doing a less-than-perfect landing. You can see the amount of tail flex that occurred even though the landing was not all that terrible. The picture shows the carbon rod I inserted into the underside of the rear fuselage. The 2 vertical pieces were intended to reduce the torsional twisting of the fuselage, and they did help. After doing the mod, I found the rudder to be more responsive.

As the video shows, it was not enough. If I were to do it again, the CF rod would be longer and stiffer and fatter like Scott's, and, well, you know what I mean...whatever it takes to keep her happy.

http://www.youtube.com/watch?v=TCC2WN2i5H4
I think the vertical rod actually causes a tuning fork enhancement of the phenomena; it exacerbates it...

Bein made of foam, it is what it is, and when it breaks ya replace the part thats broken...

Thanks for the vid.

Randy
May 14, 2012, 07:03 PM
Tossing planes into the snow
Quote:
Originally Posted by STEELINOX
I think the vertical rod actually causes a tuning fork enhancement of the phenomena; it exacerbates it...

Bein made of foam, it is what it is, and when it breaks ya replace the part thats broken...

Thanks for the vid.

Randy
You might be right about the harmonic-resonance thing...have to think about that. The reason for stiffening the tail is not to keep it from breaking, but to make it fly better, and it does. I had quite a few miles on it before doing the mod, and the rudder authority was definitely improved with a stiffer tail. Next time...longer...stiffer etc.
May 14, 2012, 08:10 PM
Registered User
Adding carbon along the length of the fuselage will stiffen it in bending but probably wont help much in twist along the lengthwise axis. Twist is difficult to help without adding significant mass but it is not that critical anyway. Bending is the big problem in the Radian.