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??

It's just for lqqks .

for some, a boom strike

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.

Much like adding a horizontal rear wing on a street car, a RC heli will reap the same performance gains.

lmao...Please tell me that is not your car . p.s Goooooooo steelers !!!!!

and it looks sooooooooo pretty

the car looks funny somehow the fin doesn't match the box

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

that car picture made me lose it just now... seems more and more stuff like this is haunting our cities these days... Go Steelers!!!!

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!

nice car!! go steelie!!!
and .. what a big wing
i bet that adds 10bhp to your car.

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?

Originally Posted by czynot

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.

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

Originally Posted by porqui

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.

Originally Posted by Paul1PA

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