Bird of Time HLG (oz12664)


Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - plan thumbnail

About this Plan

Bird of Time HLG. Simple all-sheet glider model.

Direct submission to Outerzone.

Quote: "Hello, My name is Rodrigo Burgo, I'm from Brazil. The lines of the Bird of Time (oz2093) glider have always caught my attention. So, I thought, why not make a HLG version for fun? So I started to make some doodles and ended up creating the project I'm sending [model photo & more pics 003-007]. The built model is 7 grams total (with ballast). Very light construction, with wings created with hand-sanded profiles, dihedrals and gull wing structure with folds in the balsa plate. A light and very attractive model, for flights on windless days. Guaranteed fun."

Update 13/12/2020: Added alternate version of the plan, to print on 8.5 x 11 paper, thanks to JanNovick.

Supplementary file notes

Alternate plan (8.5 x 11).


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Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - model pic

  • (oz12664)
    Bird of Time HLG
    by Rodrigo Burgo
    20in span
    Glider F/F
    clean :)
    all formers complete :)
  • Submitted: 11/12/2020
    Filesize: 1515KB
    Format: • PDFbitmap
    Credit*: RodrigoBurgo
    Downloads: 4143

Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 003.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 004.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 005.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 006.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 007.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 008.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 009.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 010.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 011.jpg
Bird of Time HLG (oz12664) by Rodrigo Burgo 2020 - pic 012.jpg

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User comments

My computer warns me this is exactly PDF compliant, it being PDF /A.. it "may cause issues". Check it?
fred - 11/12/2020
Seems standard to me. I am using free Reader DC on a Win10 PC to view PDFs. When I open this one, I get an info bar at the top saying "This file claims compliance with the PDF/A standard and has been opened read-only to prevent modification" and I also get a button to "Enable Editing". There is no warning. I see no issue :) Most importantly, this is the file and format that Rodrigo (the designer) sent in to us. I am not keen to start editing/hacking his file.
SteveWMD - 11/12/2020
I too got that message with my Windows 8.1 when opening the downloaded version. I clicked on "enable editing" and the message goes away. I then saved the plan again and the message does not come back. I printed at full size on standard 8/12" X 11" paper and saw that it would crop off some of the white area around the plan and a very small section of the rudder.
I can live with that!
Mike Foster - 12/12/2020
OK thank you ..Delving further; file does work despite Dire Warnings from My Tracker software PDF suite ..Seems it's an old (iffy?) Corel conversion pdf, not being fully pdf compliant.
fred - 12/12/2020
So the file also works fine, for you. So there is no issue - other than your chosen brand of PDF viewer throwing up a warning message. Here at Outerzone we recommend users view the PDF files with Reader DC, see Using other software, you're on your own - in the sense that we can't support you, or indeed replicate your issues.
SteveWMD - 12/12/2020
Hello guys, I only exported it in pdf ... the drawing is in Corel Draw and must be printed in A4 or in a scale that can be printed in A4 .. if it is of interest it can be reduced in % at the time of printing.
Rodrigo Burgo - 12/12/2020
Hi Rodrigo. It's all good. Many thanks for the plan :)
SteveWMD - 12/12/2020
Stits' Paradox: "The shorter the wingspan, the longer the comment section."
Miguel - 13/12/2020
For those who would like it, I'm submitting a copy of Rodrigo Burgo's Bird of Time HLG re-formated to reproduce on U.S. Letter size paper (8.5 x 11)
Jan Novick - 13/12/2020
This is a nice little design and plan--thanks Rodrigo. I'm curious about the difference between the "flat span" of the drawing (20-3/8") and the 44cm (17.3") that you reference in the notes. The only way I could get that measurement ("projected span") was to set the inboard panels at 48º dihedral, with the outer panels at 0º. Your photos appear to show a much shallower inboard panel dihedral... (BTW, when I selected "Allow editing" of the pdf, the measurement tool became active. it is very handy for calculating area, angles, etc.)
Dave D - 13/12/2020
Ah, right. I think maybe the model shown in the pics is a slightly reduced scale version? Certainly the wing on the plan is ~ 20.3 inches
SteveWMD - 13/12/2020
You are correct... I reduced the scale to be able to use some balsa wood leftovers I had in my hands ... if I remember correctly, it was 90%
Rodrigo Burgo - 13/12/2020
Where are the dihedral details?
Pat Meehan - 19/12/2020
For gullwing, first section with 20 mm and in the second section 10 mm...
Rodrigo Burgo - 26/12/2020
Printed out on 8.5 x 11 pc of paper. Don't know how you got this bird to have an all up weight of 7 grams. My fuse is 6.48 grams finish sanded and one wing half is 6.91 grams and the other half is 6.93 grams. Both wing halves have been LE and TE profiled by hand sanding and have been significantly tapered to the TE. Also added a slight underwing curve by balsa removal. Mine will likely be 24 grams with ballast.
eb - 12/05/2022
I just weighed one of my hand launch gliders, about the same size as your BOT. It weighs 19.8 grams, pretty much normal for a HLG. Maybe it was supposed to be .7 ounces. Mine tips the scale at .69 oz. My scale is cheap, like the one the dope dealers use for pot.
Doug Smith - 12/05/2022
Hello everyone, Here are three pictures of my Bird of Time mini [pics 008-010]. I take advantage of the good weather to give a "joyful" character to this little glider... Sincerely,
Olivier Aubard - 16/05/2022
I have some photos of the finished model on a weight scale [pics 011, 012], for those who don't believe it was 7 grams without ballast and 8~9 grams with ballast... the secret is wood, glue, sandpaper and a lot of patience.. lol
Rodrigo Burgo - 16/06/2022
Hello, my build is progressing. But, for center the model, i cant find the center of gravity of this model. Have you the response ?
Thanks a lot for your responses.
Valentin fauchère - 15/07/2022
Hello, Normally under the wings at the front 1/3. I'm going to give you an intuitive help... take some fixed paste and add more until your flight is the one that suits you. Then you weigh your fixing paste. for the record, the ballast is not the same for indoor or outdoor flight
Olivier - 15/07/2022
Can anyone give me some advice on getting the dihedral on the outer side without cutting it or does it need to be cut?
Charles Kottlowski - 11/01/2023
I simply cut and glued.
All on a big tube of glue. Very simple.
Olivier - 11/01/2023
Charles Kottlowski: Do you can fold the wood.. wet with hot water and use supports of different sizes until you reach the desired dihedral
RODRIGO BURGO - 16/03/2023
Greetings from Mexico... Mr. Rodrigo, please tell me the degrees of angulation for the internal and external dihedral, is the front notch to place ballast?
Erick Galaz - 31/03/2023
For gullwing, first section with 20 mm and in the second section 10 mm...
Rodrigo Burgo - 12/08/2023
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