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ParkZone Radian sailplane

Old 09-12-2010, 03:51 AM
  #476  
Foamaholic
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That's a tough one. Either one is a great beginner plane. Both fly nice and slow and are very robust. Might depend whether you would like a glider or a plane. You will learn much quicker with an instructor and save a lot of fixing. Both planes are easy to fix though. My inclination if I had to pick one would be the Super Cub.
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Old 09-12-2010, 05:14 AM
  #477  
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e-flite alpha 450. VERY good trainer, right up there with the super cub.
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Old 09-12-2010, 05:22 PM
  #478  
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While both planes are very good starters, I would say the super cub would be the best to start with. The Radian is a little faster and tends to nose up very quickly when launched if you are not ready for it. The Super Cub is very stable and predictable. It is also very rugged and easy to repair. I would also spend some time on a good simulator first and then have an experianced pilot help you when you start to fly.
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Old 09-12-2010, 10:28 PM
  #479  
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caryx, those were my first two planes. (Well, I started with the Mini Super Cub, but close ...)

Everyone has their opinion, but they both make good beginner planes. In fact, if you search for recommendations for good first planes, you'll find both of those planes on every list.

The Radian may be the easiest plane in the world to fly, but it is a big and hard to land. Everything happens slowly with the Radian, which is good and bad. It needs a lot of room to take off, to fly, and to land, but it almost flies itself when it's up there; and turns and so forth happen almost in slow motion compared to some planes.

The Super Cub is smaller and will fly in and out of smaller spaces. It's an easy plane to fly although things happen more quickly than they do with the Radian (albeit still fairly slowly.) The Super Cub is probably actually a slower plane than the Radian (depends on the wind, I've flown my Radian backwards and you can't get much slower than that) with faster reaction times. Hope this doesn't all sound too contradictory.

My 2cents, FWIW
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Old 09-24-2010, 06:38 PM
  #480  
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Parkzone has released a follow-on product to the highly successful Radian called the Radian Pro. This is a full house 2 meter e-glider. It comes receiver ready or bind n fly. Shipping won't start until November but the specs make it look like a winner.

BnF model
http://www.horizonhobby.com/Products/Default.aspx?ProdID=PKZ5480#quickSpecs
Video
http://www.horizonhobby.com/ProdInfo/Files/PKZ5480_Hi.wmv


Radian Pro BNF

Key Features
  • 5-channel control - throttle, aileron, elevator, rudder and flaps
  • Powerful 480-size 960Kv brushless outrunner motor installed
  • E-flite® Pro 30A brushless ESC installed
  • Ready to fly in minutes
  • Durable, lightweight and repairable Z-Foam™ construction
  • Spektrum 2.4GHz DSM2 AR600 receiver installed
  • 3S 11.1V 1300mAh Li-Po battery pack included
  • 2- to 3-cell DC LiPo balancing charger included
  • Requires a full-range DSM2 aircraft transmitter (sold separately)
Needed to complete:

A 5+ Channel DSM2 compatible Transmitter
A programmable 6+ Channel DSM2 Transmitter is required for advanced sailing mixing functions
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Old 09-24-2010, 07:34 PM
  #481  
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Wish I didn't already have the first Radian because I would love having the Pro.
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Old 09-24-2010, 08:42 PM
  #482  
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Why not have both? I have several RES and several full house gliders.
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Old 09-24-2010, 11:57 PM
  #483  
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What a great idea. I'm not currently in spend mode, but am considering it.
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Old 11-13-2010, 12:19 AM
  #484  
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Default finding cog

I know the manual says 63mm behind leading edge. Is there another way? I'm unsure of he exact spot to start measuring from. Thanks
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Old 11-13-2010, 02:31 AM
  #485  
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Originally Posted by chouser View Post
I know the manual says 63mm behind leading edge. Is there another way? I'm unsure of he exact spot to start measuring from. Thanks
Mine flies well balanced on the permanent wing spar that is taped over.
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Old 12-13-2010, 10:59 PM
  #486  
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I love the Radian and was very excited to read about the introduction of the Radian Pro. But there have been some problems related to the wrong power system being shipped in the new Pro.

Take a look here before you consider buying.
http://www.wattflyer.com/forums/show...&postcount=944
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Old 12-14-2010, 12:19 AM
  #487  
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Thank you for the info. I have not ordered one yet and now will wait.
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Old 12-15-2010, 02:40 PM
  #488  
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I must say that, after a year I am still enjoying the Radian very much. I have high end sailplanes too, but the Radian continues to bring a smile to my face.

I highly recommend it to anyone who would like to give thermal soaring a try. This one is hard to beat.
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Old 12-30-2010, 09:49 PM
  #489  
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I had the Radian out today. 35 degrees, 24 inches of snow on the ground and only a little section of parking lot plowed by the soccer field. Two battery packs gave me about 2 hours of flying. Not a lot of lift but enough to make it fun.
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Old 12-30-2010, 10:22 PM
  #490  
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Glad you got to fly. Made 42 here but was so gray and dark I didn't want to fly thinking I would lose sight of the plane pretty quick.
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Old 01-07-2011, 07:06 AM
  #491  
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Default Radian Shotgun Retrieval

Just discovered a new way to rescue my parkzone Radian out of a really high tree. Took two days of exhausting all the usual techniques like climbing the tree and using a long pole with no luck. Then my mate came up with this idea....

[media]http://www.youtube.com/watch?v=kVRWiT42LlM[/media]
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Old 01-07-2011, 10:29 AM
  #492  
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Yee-haw!!! :d
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Old 01-07-2011, 02:54 PM
  #493  
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That's a classic!
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Old 01-08-2011, 12:54 AM
  #494  
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Does the battery and motor run cooler now with the extra ventalation?
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Old 02-12-2011, 09:41 PM
  #495  
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[QUOTE=AlteredState;776145]Just discovered a new way to rescue my parkzone Radian out of a really high tree. Took two days of exhausting all the usual techniques like climbing the tree and using a long pole with no luck. Then my mate came up with this idea....

This is an absolute classic!
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Old 02-15-2011, 01:50 AM
  #496  
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Default Radian Pilot Wanted

Any Radian Pilots in the Upstate NY area? Looking for some help this Spring.
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Old 06-09-2012, 09:43 PM
  #497  
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Default Radian wing span

I am thinking about buying an extra set of wings and using them to increase the wingspan of my Radian rtf by 2 ft. Has anyone tried this? Results? I have already added to the control surfaces. The larger rudder gives me better turning ability.
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Old 06-09-2012, 11:42 PM
  #498  
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Originally Posted by *rider View Post
Hi Hotwheels I have heard only good things about the Easy Star and Easy Glider and the Elapor stuff Multiplex uses however I have not owned or flown either. I'll let others with experience chime in here.

The Radian is constructed of the "Z Foam" stuff and it is quite durable, it's different than Styrofoam. Same stuff as the HobbyZone SuperCub and other Parkzone planes like the T-28 Trojan. For me, I started with the SuperCub and yes I found it beneficial to use tape - what I did was use the 3M fabric tape and I taped along the leading edges of the wing and along the corners, also the fuselage behind the firewall and near the tail. I have heard you can use simple packing tape with great results as well.

I have not added tape to my Radian but I see no downside to taping the leading edges of the wing and anywhere else you feel necessary, I wouldn't overdo it of course but no harm due to the extra weight etc. personally the only weak spot I have found on my Radian is near the tail if I ever have to rebuild this one I will sink a couple thin carbon rods on either side after cutting channels and epoxy them in.

I'll let others respond w/more advice of course welcome to this hobby and this is a great site lots of good people and info take care!
Take my word for it.Your radian fuselage will break under the trailing edge of the wing.Tape it with 3m packaging tape 1in in front of leading edge to 2in behind trailing edge the minute you remove it from the box!

Last edited by doctormikek; 06-10-2012 at 09:45 PM.
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Old 06-27-2012, 02:54 PM
  #499  
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I flew mine for a year, crashing hard once. Although my fuselage was in five pieces, it did not break above the wing saddle. Most breaks I've seen photos of were at the leading edge of the wing, not the trailing edge. I'd overlap any reinforcement on both ends. Keep in mind that with a sailplane in light winds, weight is not your friend. In heavier winds weight could be a plus.

I'd also consider packing tape reinforcement for leading edges of all flying surfaces. I tried the magnet trick for the horizontal stab but the weight penalty way back there wasn't worth it. 1 gram on the tail needs 3 or 4 on the nose to balance. Scotch tape is light and holds fine there.

Magnets for the main wing halves would be less of a problem but I never had any problem with wing separation without them. When the wedges start to get sloppy, just heat up some water to boil, take it off the heat and immerse the root of the wings right after the bubbles stop. That will restore your tight fit. It can be done more than once.
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Old 01-16-2013, 12:09 AM
  #500  
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Thumbs up Park Zone Radian Hardware & Short Lead Servos

Guys,

Like to provide you with some thoughts on one ugly crash I had with my Park Zone Radian back on September 14th, 2012. The reason I am posting this now is because I did not have time to repair my Radian until a few days ago and my findings were a little shocking, at least to me.

Here is my Report as I posted back in September 19th, 2012 at the Radian Thread and you can find the same at:
http://www.rcgroups.com/forums/showp...ostcount=13263

================================================== ========

Friday (09-14-2012) morning at Moon Port Modelers RC Club was enjoyable and after flying my Park Zone Spitfire Mk IX, I hand launched the Park Zone Radian Powered Glider. I was tooling around close and for some reason, decided to command my Radian up higher and did not realize a strong upper level winds.

Pretty soon I found myself struggling to bring the model back over the field and it got higher very quickly and found it in a worse situation, several hundred feet down range. I was not clear on what it was doing at this point and it just circled and circled as I have a mechanical Left hand Rudder input in case all radio signal gets lost. However, it was still accepting commands from my transmitter when I powered up the motor. Just could not get it back.

Mark S., a nice friend that Lives in Titusville and who ownes an Ultra Light Experimental Aircraft was out of town that day and with luck he was back in town on Sunday (09-16-2012) and performed an aerial survey on his Aircraft and to both our surprise, found my Radian Powered Glider next to a barbed wire fence near the entrance of the Great Outdoors.

If you look the Google Map picture, the model almost traveled a full Mile ( ~ 5,000 feet) from the point of origin.

A few pictures detailing our rescue adventure:



Heading North on a dirt path road:


Looking East along the Fence:











Here is how my Park Zone Radian Powered Glider was found!

Mark and his Ultra-Lite Aircraft over the Great Outdoors!!



Digital Zoom:


================================================== =======

FAST FORWARD: January 13th, 2013 Repairs and Findings:

1. I found lots of detached Foam Hinge material from the Rudder.
2. The Elevator had suffered a slight detached hinged at where the Control Horn area.
3. The Push Rods had lots of corrosion and once lose from the servos they were very hard to push or pull within the Guide Tubes.
4. The Rudder Servo was becoming jammed as it was making a loud noise while attempting to move the Arm.
5. Elevator Servo was observed to move by itself. Without the Servo Arm, I just touched the top and it decided to move on its own and even after I removed my finger.

FINDINGS:

Certainly, during a crash into a barbed wire fence any and all damages can result from the listed observations and considering the model sat for two (2) days and nights until it was spotted by my good friend with the Ultra Light Experimental Aircraft can cause corrosion quickly as a result of the model being out at the environmental elements.

However, it is my thoughts that my lost of control was NOT caused totally from high level winds nor any issues with Spektrum AR500 Receiver (I always check to make sure it has a Solid Red/ Orange Light before hand Launch). A number of items such as Rudder Foam hinge material coming detached is another factor and the high level winds just made matters worse. Other factors are the use of cheap steel push rods as I noticed lots of pits and ruts along the push rods themselves and I had to take a hobby knife to remove these spots and used sand paper to removed corrosion from the remaining push rod assemblies. Using Lithium Grease really did the Job to lubricate the Push Rod Tubes and keep the rods from any future corrosion.

I am going to spare everyone with the detailed Airframe (FUSE) Repairs as I am pretty sure those of you out there have used CA and Hardener and everyone has there own technique so, again, I am going to show you all what I have done to make my Radian and even better flying model.

I have replaced both STOCK (PKZ1060) servos with the Digital Metal Gear type, (DSV130N). These DSV130M are used within the Park Zone Spitfire Mk IX and being metal gear are much stronger to withstand those unexpected High Level Winds or unexpected dive as a result that many have when allowing the model to attain very high altitudes and resulting in RC Flyer really not noticing what the model is doing (Dive or Climb).

My efforts here are just to alert the general RC Powered Glider Community about my findings and what I did to make my Radian a little safer in the future. I believe my work on the Push Rods and the use of Metal Gear servos will provide carefree flights. (Update: See my Latest Videos for flight results)!

Okay, finally some pictures:

Removed the STOCK PKZ1060 short lead servos:


Installed new Park Zone DSV130M (Digital - Metal Gear) Servos:




FUSE all together again and better than ever!




Replacing the STOCK Control Push Rod Keepers with Dubro (The Stock seems to be made from Aluminum and the thumb wheel just snapped off while tightening).



DUBRO Hardware on a Park Zone Product!



RESULTS: (See Videos!!!)

https://vimeo.com/57333606

https://vimeo.com/57389230
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