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Author Topic: composite F1N  (Read 12527 times)
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ram
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« Reply #50 on: January 07, 2019, 12:56:52 PM »

After watching that video I think one of the Cleveland Clowns needs to do color commentary at West Baden this year!
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cglynn
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« Reply #51 on: January 07, 2019, 01:19:40 PM »

Ray, I nominate Don as lead with Loucka assisting.

Speaking of, can we fly gliders at Baden?  Or is it too much liability with the spectators, hotel property, and what not?  Or do we simply not want to mix light rubber powered models with heavy gliders?
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ram
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« Reply #52 on: January 07, 2019, 01:51:44 PM »

Ray, I nominate Don as lead with Loucka assisting.

Speaking of, can we fly gliders at Baden?  Or is it too much liability with the spectators, hotel property, and what not?  Or do we simply not want to mix light rubber powered models with heavy gliders?

That's a question for someone at a higher pay grade than I!  Maybe Olbill?

Rey
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czech_f1n
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« Reply #53 on: January 07, 2019, 04:46:18 PM »

Thanks for posting. I have been inspired by your earlier posts to make a composite f1n. It is not up to your high build quality or performance but i am enjoying it.

Can your share any construction details of your beautiful model? I am very interested in details of your hotwire. I am scrapping 5 foam wings for every usable wing. I am clamping the bow to the bench and pulling the foam by hand. It is difficult to cut a tapered wing and am considering a gravity fed system to get more consistent speed of cut.

Finally, are you making carbon tubes?

Some of the old photos are here:

https://ruleta.rajce.idnes.cz/Vyroba_modelu_kat._F1N_Razor_2_Evo_u_Michala_v_lednu_2013./
https://ruleta.rajce.idnes.cz/Cislo_0009_-_hazedlo_kat._F1N_Razor_2_Evo_je_pripravene_k_nasazeni/
https://ruleta.rajce.idnes.cz/Karbonovy_Razor_2_evo_cislo_0023_zije_-_1.11.2013/

but is all history.

I build gravity fed system for cutting wings almost 10 years ago. It is relatively simple and work exceptionally well. Only initial setup is little cumbersome.

And last to the carbon tubes, which I make my self by hand. First inner layer is winded, then unidirectional layer is placed and finally outer layer is also winded.
I use classic carbon rowing with IM modulus which i spread and divide into thinner filaments (approx 0,2k). This process is pretty labor intensive (2-3h of total work), but
final tubes have superb stiffness to weight (from 1g to 1,7g in 750mm length, with some super light version goes to 0,7g, but they are not suitable for SAL launches).
Root diameter is ca 6mm with tip diameter ca 3mm.
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czech_f1n
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« Reply #54 on: January 07, 2019, 04:53:58 PM »

Hello everyone,

development of F1N Razor continue, now with version 4, max time is cca 54-55 seconds (flight in F1N competition) from 10-11m in Decin.
Wingspan 740mm, weight approx 8g. Now using full composite construction including tail.

We been also in Jedlicze, PL with record time 55,5s in Cat II hall. Enjoy video  Wink

https://www.youtube.com/watch?v=QOJXI-bpBfU

With new version 5 i will push limits little bit further.


Is that you launching at 14:47 in the video?  If yes, congrats.  That is an amazing model and some great flying. 

Also, thanks for posting the link to that video.  It clearly shows the different launch and transitions used by flyers.  That is a great resource.



Thank you, yes it is me Wink. Model flies well, but have some reserves, which may be exploit with new iteration. Credits for the video goes to Zonk Team. It is really high quality piece.
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Olbill
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« Reply #55 on: January 07, 2019, 05:23:21 PM »

Ray, I nominate Don as lead with Loucka assisting.

Speaking of, can we fly gliders at Baden?  Or is it too much liability with the spectators, hotel property, and what not?  Or do we simply not want to mix light rubber powered models with heavy gliders?

That's a question for someone at a higher pay grade than I!  Maybe Olbill?

Rey

Gliders are traditionally not allowed at West Baden due to possibility of spectator injuries and/or damage to the hanging pendant. That being said I'm not involved in this year's WB contest. Bud Layne is in charge.
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Tapio Linkosalo
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« Reply #56 on: January 08, 2019, 12:10:46 AM »

Where do you get that 8g/m2 carbon paper from?

Thx,

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Jitom
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« Reply #57 on: January 13, 2019, 03:21:16 PM »

Hello,
 the complete results for Krosno are at
 http://freeflight-krosno.vxm.pl/?page_id=23
and on the video https://www.youtube.com/watch?v=OuphKBRcLr8&feature=youtu.be
you can see the conclusion of the competition.

Jiri
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Jitom
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« Reply #58 on: February 20, 2020, 02:36:02 PM »

https://www.lmk-vilemov.cz/2020/02/19/stavba-uhlikoveho-hazedla/

This is how we build the F1N model. The text is unfortunatelly in Czech, but you can always translate the whole page. There are many pictures of the building process.

Jiří
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piecost
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« Reply #59 on: February 20, 2020, 02:56:35 PM »

Thank you Jiri,

I will study the pictures carefully
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AlexVolgodonsk
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« Reply #60 on: January 12, 2021, 07:17:40 AM »

Здравствуйте, мы строим планера из сосны и пенопласта, много интересного для себя тут нашли.
Помогите чертежами каких-нибудь простых моделей, нет у нас бальзы и углеткани. Спасибо.
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Re: composite F1N
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billdennis747
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« Reply #61 on: January 12, 2021, 08:44:26 AM »

Nobody has balsa at the moment!
Have you looked at the plans on this site, or Outerzone?
https://www.youtube.com/watch?v=NEz84Qn1Bgc

« Last Edit: January 12, 2021, 09:09:34 AM by billdennis747 » Logged
AlexVolgodonsk
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« Reply #62 on: January 12, 2021, 09:36:51 AM »

Спасибо большое за отклик.
Обязательно посмотрю!
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PB_guy
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« Reply #63 on: January 12, 2021, 12:11:26 PM »

Отличный Алекс! Если хотите, вы можете использовать веб-переводчик для публикации на английском языке.
Видеть: https://translate.google.ca/?hl=en&tab=wT

Great Alex! You can use a web translator for posting in English if you want.
See: https://translate.google.ca/?hl=en&tab=wT
ian
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AlexVolgodonsk
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« Reply #64 on: January 12, 2021, 12:54:24 PM »

Thank you very much, I will take note  Smiley
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AlexVolgodonsk
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« Reply #65 on: January 13, 2021, 01:32:49 AM »

Hello. Please tell us how to set up the glider so that it switches to level flight after climb. This is the most incomprehensible for us. It is easier to build a model from the available materials, weighing 12 grams and a wingspan of 600 mm, than setting up and launching correctly.
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cglynn
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« Reply #66 on: January 21, 2021, 11:57:06 AM »

Alex,

I have found that launch angles have the biggest effect on transition from climb to level flight.  Experiment with different angles along both the pitch and roll axis.  If the glider is set up for a good glide, then some combination of angles will allow it to transition from climb to glide.

I personally launch my models with initial bank opposite the turn direction.  I build them to fly in a right hand circle, and launch with the model banked left.  I also launch with my left hand, for what its worth.

Experiment with the angles, and eventually you will find the right combination.  Take notes of each trial as best you can, so you can repeat things that work, and discard things that do not work.

Chris
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AlexVolgodonsk
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« Reply #67 on: January 22, 2021, 11:15:57 AM »

Chris, thank you very much for the information you provided. tomorrow we'll try it with the boys.
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