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› New Heli trend, no H Fin?
08-09-2009 04:07 PM  8 years agoPost 1
T-heli

rrApprentice

South-Africa

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First they started to get smaller.
Now TT has decided done away with the horizontal fin, You Like? Or not
Give us your opinion and why?

I'll go first

What about the effect of blade downwash on the fin affecting the heli, then again carbon fins are more holes than fin right?

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08-09-2009 07:12 PM  8 years agoPost 2
Dale M

rrApprentice

Lakewood Ca USA

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I think it's mostly from the 3D crowd.. I removed the horizontal fins from my 450's a long time ago and couldn't see/feel a difference. Left them off for a small weight savings. My Logo 500 came with one but I didn't even put it on to try it, but it flys fantastic without it as well.

AMA #99382

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08-09-2009 07:23 PM  8 years agoPost 3
Eco8gator

rrElite Veteran

Palm Beach, FL

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The H fin is a scam...one more thing to damage and replace. And in a lot of cases actually causes more damage.

I take off anything unessary on my airframes and that always includes the H Fin...unless its used to hold a clamp in place then I wait to break it and then I cut it down and use a strip to hold the clamp.

C

Xera Motors
ProBar
Minicopter
Thunder Power

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08-09-2009 07:31 PM  8 years agoPost 4
outhouse

rrVeteran

auburn ca

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LOL its not a scam and i have yet to break one in over 50 wrecks lol

is it needed? not really but the material does help hold the h fin holder in place better.

finless started this years ago

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08-10-2009 03:50 AM  8 years agoPost 5
BrunoBL

rrKey Veteran

Pomerode, SC, Brazil -26.71, -49.17

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The H fin is a scam
^^^^^?

Why would the HF be a scam?


...Bruno.
Spectra G on Avgas 100LL, Jewel generator
T-Rex450SE V2
DX7

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08-10-2009 06:55 AM  8 years agoPost 6
OICU812

rrMaster

Edson, Alberta, Canada

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One thing and one reason I keep my H fin on is this....

It is the first and easiest way to notice anything that is going out of check. If you have a bearing in the ass end going, you can bet your boots you will see a high frequency vibe on that fin first it seems. And it does work well for many as a reference in orientation. Does it affect flight?...absolutely not in any way, but there are advantages imho.

...Once upon a time there were Nitros, flybars and frequency pins...

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08-10-2009 11:56 AM  8 years agoPost 7
BrunoBL

rrKey Veteran

Pomerode, SC, Brazil -26.71, -49.17

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It is the first and easiest way to notice anything that is going out of check.
Excellent point.

The fins are good indicators for vibration. A HF vibration is usually indication of something wrong at the tail rotor (bad bearings, bent shaft, unbalanced blades) while the VF may indicate rough engine, unbalanced or untrue fan, or clutch problems.

That alone is one excellent reason to keep the fins on.


...Bruno.
Spectra G on Avgas 100LL, Jewel generator
T-Rex450SE V2
DX7

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08-10-2009 12:21 PM  8 years agoPost 8
mmc205

rrElite Veteran

PA - USA

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Fins used to be larger (and more useful) before the days of heading hold gyros. They would allow the tail to weathervane in direction of forward flight so the tail would stay put behind the bird. For 3D they are kind of useless unless you have them painted brightly to aid in orientation I personally have no Hfin on my logo 400 and half a fin on my trex 500 (broke in a crash)

***Logo 600 vbar***Henseleit TDR vbar***

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08-11-2009 03:40 PM  8 years agoPost 9
T-heli

rrApprentice

South-Africa

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"Fins used to be larger (and more useful) before the days of heading hold gyros. They would allow the tail to weathervane in direction of forward flight so the tail would stay put behind the bird."

Very interesring and so is the fact using it for reference, i think i might keep mine, i purchased it seperately for my 3d did not have one, now i have 2 options thanks!

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