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Author Topic: F1N-150 for Cat II+ - with flaps or without?  (Read 349 times)
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Tapio Linkosalo
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« on: September 13, 2018, 01:53:17 AM »

Planning of trying F1N-150 in November, in a 18 meter football hall. Should I plan to make a model with fixed wing and spiral climb, or go with flaps and bunt?
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Olbill
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« Reply #1 on: September 13, 2018, 07:40:30 AM »

Probably solid with Ishii airfoil if you've got some light balsa.
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Tapio Linkosalo
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« Reply #2 on: September 13, 2018, 10:48:37 AM »


Thx. Where can I find coordinated for the Ishii airfoil?

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Olbill
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« Reply #3 on: September 13, 2018, 11:16:40 AM »

I've lost the coordinates. Anyway I think he made the coordinates from the airfoil instead of vice versa. Here are drawings on a grid. Also a few of his Cat 2 F1N's.

He makes his wings by hand without templates. There are some YouTube videos of Ishii carving a wing but I can't find them right now. He says it takes him 2 hours to make a wing.

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Re: F1N-150 for Cat II+ - with flaps or without?
Re: F1N-150 for Cat II+ - with flaps or without?
Re: F1N-150 for Cat II+ - with flaps or without?
Re: F1N-150 for Cat II+ - with flaps or without?
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Tapio Linkosalo
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« Reply #4 on: September 14, 2018, 02:15:39 AM »

150mm wing should be faster to carve... :-) But anyways, the airfoil looks complicated. How much would the performance suffer if I tried some stanfoil'ish airfoil?

 
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Olbill
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« Reply #5 on: September 14, 2018, 07:55:26 AM »

Tapio
I apologize but I didn't see the 150 in your question. All the info I sent was for F1N. I have no experience with F1N-150. There are a lot of plans on the Facebook group "Everything about F1N".
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boca55
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« Reply #6 on: October 08, 2018, 07:25:43 AM »

I tried flaps on the F1n model, but it does not work well with the discus start. If the left flaps were fixed down, and the right flaps worked, it might be work.
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