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Old Oct 21, 2011, 06:07 PM
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United States, NY, New York
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What is the purpose of the horizontal fin?

Fins dont do much to stablize the heli in flight. The verticle fins keep the tail blade touching the ground But What good/purpose does the Horizontal fin do??
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Old Oct 21, 2011, 08:49 PM
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It's just for lqqks .
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Old Oct 21, 2011, 09:09 PM
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for some, a boom strike
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Old Oct 22, 2011, 04:31 AM
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A well designed horizontal fin can help the tail stay more level in forward flight. Allowing slightly faster flight, and increased pitch stability.
Many 3D helicopters have such a small fin, its mostly for style points.
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Old Oct 23, 2011, 12:09 PM
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Much like adding a horizontal rear wing on a street car, a RC heli will reap the same performance gains.

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Old Oct 23, 2011, 12:17 PM
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lmao...Please tell me that is not your car . p.s Goooooooo steelers !!!!!
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Old Oct 23, 2011, 12:22 PM
Axes & Blades-Cutlery & Helis
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and it looks sooooooooo pretty

the car looks funny somehow the fin doesn't match the box
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Old Oct 23, 2011, 01:04 PM
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It is a great photo. Now and then I see youngsters do this to ther car. Even though looks as if car cant push 75 mph max..ha
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Old Oct 23, 2011, 03:05 PM
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that car picture made me lose it just now... seems more and more stuff like this is haunting our cities these days... Go Steelers!!!!
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Old Oct 23, 2011, 11:44 PM
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Why are you guys laughing at my car? Probably just jealous.

Seriously, CLICK HERE to see more photos of cars with ridiculous rear wings. Funny stuff!
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Old Oct 24, 2011, 10:23 AM
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Malaysia, Pulau Pinang, Tanjong Bungah
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nice car!! go steelie!!!
and .. what a big wing
i bet that adds 10bhp to your car.
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Old Oct 24, 2011, 10:59 AM
Fly Safe !!
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With most of the vertical fin cut out it serves no aerodynamic purpose but does help prevent blade strike on boom if large enough.

Do you guys have such small cars in the States?
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Old Oct 24, 2011, 11:41 AM
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Quote:
Originally Posted by czynot View Post
Fins dont do much to stablize the heli in flight. The verticle fins keep the tail blade touching the ground But What good/purpose does the Horizontal fin do??
Depends..... In a 3D heli, the fins have little to no purpose.

For FAI/F3C, scale and full-scale they certainly do serve a purpose.

-The Vertical fin improves stability in forward flight... see the weathervane effect.
-The Horizontal fin in F3C/scale and full-scale is much larger than that of 3D helis, it also serves a similar purpose as the horizontal stabilizers in an airplane, in fast forward flight (high collective) it smoothes out odd pitch tendencies.

Basically, these fins (when functional) improve tracking and stability in high collective flight.

They are FAR from useless.
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Old Oct 24, 2011, 02:01 PM
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United States, TX, Round Rock
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I can not decide which one I like better between these two:

http://legacy-cdn.smosh.com/smosh-pi...spoiler-25.jpg

http://legacy-cdn.smosh.com/smosh-pi.../spoiler-8.jpg


Quote:
Originally Posted by porqui View Post
With most of the vertical fin cut out it serves no aerodynamic purpose but does help prevent blade strike on boom if large enough.
I don't see how the vertical fin has any effect on boom strikes. The small horizontal stab if anything else may only increase the damage caused by a boom strike as it may catch the blade and lead it straight into the boom. I've seen this happen.
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Old Oct 24, 2011, 03:33 PM
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Originally Posted by Paul1PA View Post
Why are you guys laughing at my car? Probably just jealous.

Seriously, CLICK HERE to see more photos of cars with ridiculous rear wings. Funny stuff!
Lmao....Those are some crazy pictures. And here I thought I have seen the most bizzar car hop up's...Love the home made wooden spoilers...ha ha
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