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Old Oct 11, 2012, 01:43 AM
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Australia, SA, Munno Para West
Joined Oct 2012
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Howdy guys, new to the R/C sailplane scene. Just purchased a Radian and am patiently waiting for a nice calm morning to have my first flight fingers crossed i go alright

Rhett
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Old Oct 11, 2012, 03:05 AM
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NorCal
Joined Dec 2009
1,716 Posts
Rhett, go easy with the throttle when you launch and replace those cable locks. Have fun.
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Old Oct 11, 2012, 03:11 AM
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Australia, SA, Munno Para West
Joined Oct 2012
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No probs cheers Raften
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Old Oct 11, 2012, 03:18 AM
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Windsor, Canada, near Detroit
Joined Jul 2007
5,227 Posts
turning upwind-or downwind

1st, this is a matter of perception. it is not something that we can provide data or figures. so i will not try to argue about what anybody thinks. it is a waste of time.
you think what you think and i think what i think, based on our experience or perception.
about slope, if any1 does not think that turning away from the cliff not only allows the plane to keep altitude better, but also keeps it at a safer distance, it's his prerogative to think so.
and about thermals (remember i said 'unless you are into a strong thermal'), my perception is that turning a plane downwind makes it sink more than upwind. that's what i see with my planes. and no1 is going to persuade me on the contrary.
neither i will be able to persuade him of my point of view.
so i will not bring more comments on the issue. it's a waste of time.
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Old Oct 11, 2012, 02:36 PM
Tossing planes into the snow
Canada, BC, Smithers
Joined Nov 2011
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Quote:
Originally Posted by Raften View Post
Rhett, go easy with the throttle when you launch and replace those cable locks. Have fun.
All 3 of your pieces of advice are dead on, Raften. Replacing the cable locks is the only must-do mod for this plane. It took me many flights to realize that full throttle is neither necessary nor advisable when launching. This plane has such a flat glide ratio, that it can climb at 1/4 throttle. When it is at maximum, the elevator is super-sensitive and it is easy to see why new pilots get into trouble when using full throttle close to the ground. Once it is up above the trees, feel free to let 'er rip and see if it can go straight up.
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Old Oct 12, 2012, 12:20 AM
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Australia, SA, Munno Para West
Joined Oct 2012
6 Posts
Howdy guys, Well i had my first ever go of a R/C plane and of a Radian... I should have got one earlier it was great fun.... Was a cold, calm morning so no thermals around but that is my next challenge to find some Was so pleased with how i went....
Bring on todays arvo flight

here is a vid of this mornings first ever go..
Parkzone Radian maiden flight (3 min 33 sec)


Rhett
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Old Oct 12, 2012, 01:12 AM
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Quote:
Originally Posted by phil alvirez View Post
1st, this is a matter of perception. it is not something that we can provide data or figures. so i will not try to argue about what anybody thinks. it is a waste of time.
Excellent. There is a thread dedicated to the question elsewhere on rcgroups. If you want to troll do it there.

http://www.rcgroups.com/forums/showthread.php?t=1679552
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Old Oct 12, 2012, 06:28 AM
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Windsor, Canada, near Detroit
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Originally Posted by kaptondave View Post
Excellent. There is a thread dedicated to the question elsewhere on rcgroups. If you want to troll do it there.

http://www.rcgroups.com/forums/showthread.php?t=1679552
thanks for the link
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Old Oct 12, 2012, 08:48 AM
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Old Oct 13, 2012, 10:36 AM
I ain't afraid of no highs
pilottube's Avatar
Spain
Joined Jun 2008
466 Posts
Nice looping jovanx in your previous video! Isn't that too much stress for the wings?
Hey Rhett, not bad for a first flight, that "first Stall" happened to me too, but I had some more altitude and I managed to recover. You just have to know how much down stick is needed to prevent the plane from nosing up when using throttle. Good luck hunting thermals! I caught a few today:
From ground to sky high (3 min 22 sec)
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Old Oct 13, 2012, 12:35 PM
Tossing planes into the snow
Canada, BC, Smithers
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Originally Posted by pilottube View Post
Nice looping jovanx in your previous video! Isn't that too much stress for the wings?
Thanks. I do lots of loops with this plane because they look so graceful on the Radian. It's true that I am probably pushing the stress level of the wings to the limit, especially considering the stock tubular spar has been replaced with a super stiff CF spar. That pushes the flex out to the wing tips and makes them even more vulnerable to breakage.

The good news is that it has survived many hard loops, dives, and gusty winds. It can't do that forever, as styrofoam fatigues just like any other substance. A guy could replace the flat FG spar with aluminum without an increase in weight. That is the solution for the PZ Corsair which has a notoriously fragile and flexible wing. For now, I think I'm going to put a few strips of packing tape on the underside of the wings and see how it goes.
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Old Oct 13, 2012, 11:23 PM
St. Louis
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USA, MO, Ballwin
Joined Mar 2010
634 Posts
First of all, the Radian is not made out of Styrofoam.

You will not break the wings with the factory spar. I have seen winch launches bending the wings past 45 degrees without failure.

The Radian does not weigh enough to overstress the wings in any kind of high speed dive.

Not an issue in two years of flying the Radian.
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Old Oct 14, 2012, 07:33 AM
I ain't afraid of no highs
pilottube's Avatar
Spain
Joined Jun 2008
466 Posts
thanks for the info, I don't usually do loopings but when people are around that can be a good way to impress them. Also is good to know the wings won't break.
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Old Oct 14, 2012, 10:24 AM
Gravity? No, the Earth sucks
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United States, IA, Des Moines
Joined Apr 2011
1,214 Posts
wing flex?- the Radian can take it !!! this was captured during a mid air collision with Eckace's Radian...


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Old Oct 14, 2012, 10:33 AM
Gravity? No, the Earth sucks
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United States, IA, Des Moines
Joined Apr 2011
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here are a few pics i was looking through to find the wing flex photo

just pretty
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Radian in the clouds
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the Franken radian stick thing
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Eckace runs into my tail
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just pretty- up high
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