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 Post subject: working a thermal with a Radian Pro
PostPosted: Sun Jul 31, 2011 11:28 pm 
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I'm drooping the ailerons & flaps a few mm as specified by the Radian Pro manual. How do I know if the droop is optimal? Just fly it & try various settings or ?
I played around with various amounts of droop but I lack the skillz to notice the difference. :?

What is the optimal speed for banking & yanking in a thermal? I had a 2.5M full house balsa glider back in my younger days that just sort of settled down to a nice speed in a thermal turn. The Radian Pro & I are not one yet. :( Maybe I'm trying to fly the Radian Pro a touch too slow in the turns? I've found lift with it ... darn near lost it in some booming lift (almost pulled a Diggs) the other day. So I'm close to connecting with the RP.

Doug B.


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Sun Jul 31, 2011 11:52 pm 
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Hi Doug,
I only have a few flights on my RP and love it .. Far cry from the warbirds .. This is my first glider and im not really sure how to "fly" it .. Good info seems hard to come by .. Any links you could share would be well appreciated ..


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Mon Aug 01, 2011 9:31 am 
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Well, the only real way to see if you are coming up with thr right camber settings is to do some tests.

You should get an altimeter like,
the open altimeter- http://shop.openaltimeter.org/catalog/p ... altimeter/

RC Alti 2- http://www.magtechinc.net/purchase.htm

or a RAM 3, or others....

Basically you need something that records altitude vs time.

Next you need to get up reall early, like dawn and do some test flights. 2 things are important, speed of flight, and camber setting. Climb to a moderate altitude and let it glide down slowly. Change settings and repeat.

Try to test as soon as there is enough light, and test one setting vs another. repeat the test, going back and forth between each setting so you can look for an average comparing 3 flights each. Then go home and look at the data to compare. Pick the best setting and try it against a new condition next time.


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Mon Aug 08, 2011 10:58 pm 
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shawnshawn wrote:
Hi Doug,
I only have a few flights on my RP and love it .. Far cry from the warbirds .. This is my first glider and im not really sure how to "fly" it .. Good info seems hard to come by .. Any links you could share would be well appreciated ..


There are a couple of Radian Pro threads on RC Groups which are somewhat helpful.

This site has some helpful info:
http://www.moneysmith.net/Soaring/soaring.html

I found the Radio Carbon Art DVD's to be helpful as well:

http://www.radiocarbonart.com/products/ ... aring.html

Start reading & then post some questions. I'm sure you'll get some good help from Chris & others.

Doug B.


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Mon Aug 08, 2011 11:00 pm 
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djklein21 wrote:
Well, the only real way to see if you are coming up with the right camber settings is to do some tests.


OK. I was afraid that was the answer. :lol: OK, guess I'll have to get serious with soaring & do some testing. Thanks for the links.

Doug B.


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Tue Aug 09, 2011 9:55 am 
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Location: Austin, TX
While I haven't personally seen any of these videos, they have a reputation for being among the best soaring-related videos out there:
http://www.radiocarbonart.com/

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Chris Boultinghouse


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Tue Aug 09, 2011 11:02 am 
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JustPlaneChris wrote:
While I haven't personally seen any of these videos, they have a reputation for being among the best soaring-related videos out there:
http://www.radiocarbonart.com/


I have 3 of his DVD's. Good editing & content. He has a youtube channel as well.
http://www.youtube.com/user/pnaton

Chris, you should get Paul Naton (the owner) on the show. I know he was on ATTF quite some time ago. Hint, hint.

Doug B.


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Tue Aug 09, 2011 11:27 am 
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I was thinking the same thing, Doug! I guess it wouldn't hurt to get him on the new show, it's been quite a while since he was on ATTF. :)

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Chris Boultinghouse


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Tue Aug 09, 2011 11:41 am 
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I think it would be good since you're a sailplane guy & Bobby is a new DLG guy. I think you could cover a bunch of new ground plus touch on what the ATTF guys covered. Back to back sailplane shows might cause some complaints i.e. heli guys would develop a rash. :lol:

Paul also covered 2.4 technology which might be worth covering again from a CF sailplane point of view (applies to CF helicopters too).

Doug B.


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 Post subject: Re: working a thermal with a Radian Pro
PostPosted: Mon Aug 15, 2011 2:57 pm 
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Sorry my suggestion was a bunch of work to test......

The 95% answer is far more simple. The camber setting is not as big og deal as most think. Starting with the suggested setting in the manual is a great place. The optimal/perfect setting will not be all that far away. What is more important is the elevator --> camber mix, often referred to as snap flap. there are great threads in the RCG multitask and handlaunch forums. If RCG were not behind my works firewall, I would point some out for you.


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