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Old Apr 09, 2012, 12:16 AM
the icbm of pilots
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thornberg

So just had a afternoon flying free flight with thornberg and he is amazed that we are still flying one of his tasks 5x2 he o guess came up with that event kind of cool
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Old Apr 09, 2012, 12:23 AM
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Did you see him "bag" a thermal with a trashbag+penny?
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Old Apr 09, 2012, 09:40 AM
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He is probably also responsible for the last flight, 5 minute max, 7 minute window
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Old Apr 09, 2012, 10:06 AM
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Get him to sign your copies of the "Old Buzzard's Book"

Yours, Greg
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Old Apr 09, 2012, 08:41 PM
the icbm of pilots
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albuquerque, NM
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Already have
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Old Apr 09, 2012, 09:00 PM
Kyle Clayton
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United States, VA, Dinwiddie
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Ok, I cant resist anymore. What is "bagging" a thermal (besides the obvious)? My mind has envisioned some wild things from the items you described, but now I must know how this is done
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Old Apr 09, 2012, 09:55 PM
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A light weight bag, some thread, and a penny. Make a parachute with the bag and hang the penny below for stabilization..

Wait till you think there is a thermal nearby and chase that bitch down... and toss the bag.
If it goes up-up and away, then kudos...if not you have much to learn grasshopper.
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Old Apr 09, 2012, 10:06 PM
It's a mere flesh wound!
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Quote:
Originally Posted by Wave Glider View Post
Ok, I cant resist anymore. What is "bagging" a thermal (besides the obvious)? My mind has envisioned some wild things from the items you described, but now I must know how this is done
Kyle,

You would know all about it if you had read Dave Thornburg's "Old Buzzard's Soaring Book". It's a "must read" for anyone that flies sailplanes.

Joe Wurts once said that the "River of Air" chapter in the book is where he learned how to find thermals!

If you don't have one, you need to get one!!

See you next weekend in Charlotte!

Buddy
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Old Apr 09, 2012, 11:10 PM
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Back in the 80s when I was learning to fly sailplanes in Albuquerque, Dave signed off on the spot landing and thermal tasks for my LSF level I.

He won't remember me, but I have very fond memories of flying with him -- including him letting me fly his prototype of the Honker bipe.......Mode I !!!

-- Mark
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Old Apr 10, 2012, 05:50 AM
Kyle Clayton
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Well that sounds close to what I was thinking, and like I should read the book
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Old Apr 10, 2012, 06:26 AM
Chuck 'Em and Chase 'Em
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Get them while they are still in print. What is it, Carsten publishing that has the rights now. They said to me that the book is no longer being printed and they have the last remaining stock. Maybe it was a sales pitch at the WRAM show but since I came to them asking for the book, I do not think so.

Get them while you still can!

It was a great read and he puts the ideas in a really funny memorable way.

everyone will enjoy it.

Frank
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Old Apr 10, 2012, 08:54 AM
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Quote:
Originally Posted by Buddy Roos View Post
Kyle,

You would know all about it if you had read Dave Thornburg's "Old Buzzard's Soaring Book". It's a "must read" for anyone that flies sailplanes.

Joe Wurts once said that the "River of Air" chapter in the book is where he learned how to find thermals!

If you don't have one, you need to get one!!

See you next weekend in Charlotte!

Buddy
"River of air" is the secret for any thermal fish man! It is so secretive that it not even in the book content table! Buy the book and try to find the river.

Tai
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Old Apr 10, 2012, 11:31 AM
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Thanks Tai! I've lookd for that "river of air" stuff a number of times in the book. I knew it was there because I had read parts of it before, but when going back to look for something, I could never find it. I always tried to locate it by referring to the table of contents for guidance. That was my mistake. I'm calling this an error of proof reading on an epic scale!

I also noticed the copyright date of 1990. I'd like to think that maybe Joe Wurts knew about this river of air concept prior to 1990. Perhaps he learned it from Dave Thornburg, but not from reading the book? I had always thought that the book was written in maybe the 1970's.

In one of those old threads about "tail up in lift", someone had posted that Dave Thornburg promoted that concept in his book. I asked whether Dave was promoting the idea that the tail popped up momentarily as the model entered lift, or did he promote the idea that the tail stayed up, long term, as the model flew through lift. I think that thread is what made me go buy my own copy of the book. This time, I was able to go look it up and see what Dave had to say. There are a few different lines in the book about what the tail does when in lift and sink. He also talks a little bit about another of my pet peeves; the concept of "wave" lift.

I think there is a lot of mythology involved in those the topics: "tail up in lift" and "wave lift". I think Dave Thornburg's book supports both the reality and the mythology of both of those topics. I didn't get started in RC soaring until after 1990. I wonder if Dave's book is what popularized those two concepts, or if he was just writing down what were already popular notions.
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Old Apr 10, 2012, 11:53 AM
2013 US F3K Team Manager
Newbury Park, CA
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Phil,

The book is just a collection of articles from Dave's monthly column in one of the modeling magazines. If I'm not mistaken they were written and published in the late 70s and early 80s.

The collection carries the 1990 copyright...

-l
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Old Apr 10, 2012, 11:58 AM
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David Forbes's Avatar
United States, FL, Gainesville
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Here's one of his columns that wasn't in the book, very pertainent.
http://www.rcgroups.com/forums/showp...&postcount=303
Dave
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