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« Reply #75 on: August 08, 2018, 09:42:07 PM »
K K Iyer
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@dreamliner,
Try a larger stab, sanded thinner...
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« Reply #76 on: August 09, 2018, 04:31:00 PM »
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“Flaps Down”

This naughty boy is tamed further.  Introduced flaps.  Noticed how Physics helped in smoother glide even at slower speeds.  If thrown at higher speed at slightly nose down, it climbs and hits the wall of living room.  Will see how it behaves outdoors shortly.

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Re: 1st Chuck Glider
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« Reply #77 on: August 09, 2018, 08:44:22 PM »
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The effects of control surface are more pronounced at higher air speeds.
Vector of forces if my high school physics serves me right.
In CLG the attempt is to reverse the effect of flaps so they use flexible flaps. The launch speed of CLG is many times higher than its cruising speed. So flexible flaps straighten out at launch due to force of air flow and have minimal effect and when speed reduces to a glide the flaps bend back to original angle give better lift and lower sink rate.
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« Reply #78 on: November 01, 2018, 09:46:43 PM »
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Hi all,

Came across this YouTube video on making an F1N HLG. His design has 59 sec flights which is tremendous.
The leading edge is balsa. Wonder what the grey flexible sheet is that is curved to give a camber.

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« Reply #79 on: November 01, 2018, 09:50:11 PM »
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Incidentally he sells this glider as a kit. Costs around $40 — so it is obviously for the serious HLG competitors.
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« Reply #80 on: January 04, 2019, 01:18:03 PM »
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Hi all,
Had sent the Yellow Bird Kits to a few guys.
Don’t see any build pics or flight videos .
Have the kits bren used??
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« Reply #81 on: January 04, 2019, 10:08:57 PM »
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Hi all,
Had sent the Yellow Bird Kits to a few guys.
Don’t see any build pics or flight videos .
Have the kits bren used??

Sir,
A lesson I’ve (not fully) learnt.
In India, anything FREE is not considered a GIFT.
It’s considered WORTHLESS.
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« Reply #82 on: January 05, 2019, 04:31:14 AM »
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I've received the kit. (No Iyer sir, although much appreciated due to it's rarity, not Free) Will be starting it after I complete some ongoing constructions
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« Reply #83 on: January 05, 2019, 09:39:46 AM »
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Have I sent my bank details to those who needed it.
Don’t remember.
Anyway the aim was to kindle some interest in free flight.
Looking forward to some build pics and flight videos.
Anant
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« Reply #84 on: January 07, 2019, 11:40:42 AM »
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Hi all,

Came across this YouTube video on making an F1N HLG. His design has 59 sec flights which is tremendous.
The leading edge is balsa. Wonder what the grey flexible sheet is that is curved to give a camber.



put some 5 gram micro motor 200 mah lipo 2 grams servos and 3 grams RX and you are good to go.

Do you sell it as well ?
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« Reply #85 on: January 07, 2019, 11:41:55 AM »
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Hi all,

Came across this YouTube video on making an F1N HLG. His design has 59 sec flights which is tremendous.
The leading edge is balsa. Wonder what the grey flexible sheet is that is curved to give a camber.



put some 5 gram micro motor 200 mah lipo 2 grams servos and 3 grams RX and you are good to go.

Do you sell it as well ? Can you share flying video ?
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« Reply #86 on: January 08, 2019, 02:09:40 PM »
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That F1N is available as a kit for $50.
So quite obviously only someone really serious about this category will invest in something like this.
Here is a flight video of this model by Joshua Finn of J&H aerospace.
One important aspect is how the model transitions at the top of its climb to level flight without losing height. The other aspect visible in the video is the low sink rate of the model.

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« Reply #87 on: January 08, 2019, 02:13:52 PM »
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great adn nic poesraes
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« Reply #88 on: January 08, 2019, 06:23:31 PM »
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@ glidiator sir,
Great video of fantastic flying by a superb model!
But $80-90 with shipping Undecided

Here’s a clip you may have seen earlier. My TLG1, launched by my friend Harveer, who’s half my age and has a much stronger arm...
Nowhere near the same standard, but perhaps not too bad  Grin



Edit:
Deleted reference to wrong video.
« Last Edit: January 08, 2019, 06:42:39 PM by K K Iyer » Logged
 

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« Reply #89 on: January 08, 2019, 07:04:35 PM »
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Built this a few months ago
http://www.rcindia.org/kites-trains-free-flight-and-all-others/build-log-iambus-2/

(Pic not uploading for some reason)
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« Reply #90 on: January 08, 2019, 07:36:42 PM »
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Here’s a pic of the 1945 Iambus II
Plans on outerzone.co.uk, (with pics of my model Grin)

FF230952-B790-424D-B5B3-34C5EED8724B.jpg
Re: 1st Chuck Glider
* FF230952-B790-424D-B5B3-34C5EED8724B.jpg (85.13 KB, 800x382 - viewed 357 times.)
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« Reply #91 on: January 08, 2019, 08:31:01 PM »
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Pretty good flight KK. The satisfaction is in the construction and trimming to get a good flight. Came back like a boomerang. If one gets a thermal then the model will keep in the air for a good while longer.
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« Reply #92 on: January 08, 2019, 09:05:24 PM »
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The Iambus II looks exactly like the forefather of the FPG 9 that I use as an introductory model in my workshops.
Simple fail proof model made from a simple foam plate. NASA is credited with its design. Looks like somebody in NASA did some research on vintage models.
Anant

CA89D0EA-FD04-4709-959A-1D19968368AD.jpg
Re: 1st Chuck Glider
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« Reply #93 on: January 08, 2019, 09:50:03 PM »
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Happened to log in after a long long time and came upon this thread. Delighted to see some old stalwarts, still at it. Smiley
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« Reply #94 on: January 08, 2019, 09:51:16 PM »
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I can't believe that I have forgotten how to post attachments.  Bang Head
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« Reply #95 on: January 08, 2019, 10:21:15 PM »
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This is it!

FAMILY MODEL-page-001.jpg
Re: 1st Chuck Glider
* FAMILY MODEL-page-001.jpg (138.79 KB, 571x800 - viewed 347 times.)
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« Reply #96 on: January 08, 2019, 10:24:33 PM »
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Part 2 - If anyone wants the PDF plans, please email me @ vikramaditya27@gmail.com.

FAMILY MODEL-page-001.jpg
Re: 1st Chuck Glider
* FAMILY MODEL-page-001.jpg (138.79 KB, 571x800 - viewed 333 times.)
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« Reply #97 on: January 08, 2019, 10:27:15 PM »
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The plans in actual size.

FAMILY MODEL-page-002.jpg
Re: 1st Chuck Glider
* FAMILY MODEL-page-002.jpg (69.01 KB, 568x800 - viewed 308 times.)
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« Reply #98 on: January 08, 2019, 10:27:58 PM »
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@vc

“Flight of the Phoenix.”
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« Reply #99 on: January 08, 2019, 10:38:46 PM »
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Hey old buddy Dreamliner! I wonder how many will comprehend the meaning of your post. The Phoenix was hibernating all these years!
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