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Author Topic: my 4th F1N  (Read 7187 times)
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Olbill
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« Reply #75 on: March 09, 2011, 11:08:56 AM »

@Olbill
I didn't even notice it until you pointed it out. Either the architect or the builders did something wrong there. :-)

Reminds me of old cartoon:

Guy shouting down into giant hole in the ground "Stop digging - you've got the plans upside down!"
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dlaka
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« Reply #76 on: March 10, 2011, 01:04:58 PM »

I'll draw and upload here in a few days.

If you want a full size drawing message me your mail and I'll send it to you.

Damir

 Smiley
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albisko
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« Reply #77 on: March 10, 2011, 03:46:40 PM »

Damir, thank you Smiley

palo
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albisko
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« Reply #78 on: December 08, 2011, 04:44:02 AM »

Leeper gave you the correct answer Palo.

Undercamber will reduce the sink rate, reduce the weight (also reducing sink rate) and reduce the climb height. What you want is a glider that can only just make the max height available in your hall at something near your maximum throwing power (but not quite maximum). If you can hit the ceiling the glider is too heavy! So sanding in undercamber will help to "tune" the glider as Leeper said to get maximum flying time.

Listen to Leeper, he has 200 years of experience. Grin Wink

This is what Jim Buxton said earlier above: "You may want to start flying with the wing flat bottomed and then add undercamber on site as needed. This is what I did, and I removed about 1 gram from the wing to stay below the ceiling at my particular site".

Tmat

sanding undercamber Smiley
-give or take... Wink
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albisko
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« Reply #79 on: December 09, 2011, 10:09:14 AM »

final wing weight 9,8grams Smiley
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albisko
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« Reply #80 on: December 19, 2011, 03:33:37 AM »

hi,
I add some video from F1N contest 17.12.2011 Pieštany (Slovakia)
my 7. 8. 9. launch in contest

palo Smiley

http://www.youtube.com/watch?v=U8zVR0vk7Sc&feature=youtu.be
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Olbill
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« Reply #81 on: December 19, 2011, 07:38:13 AM »

Very pretty Palo!
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albisko
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« Reply #82 on: December 19, 2011, 08:57:10 AM »

thanks!
Win (my friend) flew best time in this site 38,8sec!
winner´s total time (3best9) 106,3sec  and I only 104,2 Smiley
« Last Edit: December 19, 2011, 09:32:52 AM by albisko » Logged
albisko
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« Reply #83 on: December 28, 2011, 04:02:49 AM »

video from Dubnica nad Vahom ,Slovakia
height 11metres
http://www.youtube.com/watch?v=ouoxU8o-U48&feature=youtu.be

model: Ran-Ran (catapult model cat2, designed by Mr.Akihiro Danjo) mixed Pelicatoo Smiley

best time 39,9sec
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albisko
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« Reply #84 on: January 20, 2012, 10:00:17 AM »

https://picasaweb.google.com/100588849894345200054/RANRANF1N#

flying weight 14,4grams (700mm span projected)
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albisko
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« Reply #85 on: January 31, 2012, 02:32:38 PM »

video from Krosno (poland)

last 3 launch

I´m a winner Smiley

http://www.youtube.com/watch?v=7FvJFSUQ7bU&feature=youtu.be

https://picasaweb.google.com/108768303424187329386/F1NKrosno12012#
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boca55
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« Reply #86 on: February 02, 2012, 02:58:53 AM »

Pavel bravo. Excellent flights with the new model.
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jim_buxton
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« Reply #87 on: February 02, 2012, 07:49:56 PM »

Great flights, nicely done.  I also like the venue, with announcer, audience, and applause. 
~Jim
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~Jim Buxton
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Olbill
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« Reply #88 on: February 03, 2012, 10:44:47 AM »

Very pretty! The transition is incredible and your launch technique is perfect for low ceiling models. Now you need a 6 gram model for Cat 1.
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dlaka
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« Reply #89 on: November 20, 2014, 11:48:33 AM »

https://www.youtube.com/watch?v=fpNFNXoHTSU

 Smiley
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Olbill
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« Reply #90 on: November 20, 2014, 12:15:28 PM »

Very nice! What is the ceiling height?
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adanjo
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« Reply #91 on: November 20, 2014, 06:11:50 PM »

Very nice! What is the ceiling height?

Have heard that it was 9 meters.

I am not only interested in the 47sec flight but also the low ceiling DLG too.
Aki
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Skymon
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« Reply #92 on: September 12, 2017, 08:35:40 AM »

I know this is a very old thread, but I wondered if anyone was still about. I'm intrigued by the anhedral on the stab on this model. What are the perceived benefits??
regards
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cglynn
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« Reply #93 on: September 14, 2017, 02:52:04 PM »

This may seem like a neophyte question, but what exactly is happening aerodynamically at transition with these F1N models?  I have flown indoor CLG (not well mind you) with a similar transition, but the model retains far more speed and sort of flies into its glide pattern.  These models seem to almost stall and then roll into a glide.  Is that flight profile a product of the flaps, model trim and CoG, tail volume, or a combination of all of the above?

Thanks
CG
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