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Home✈️Aircraft🚁Helicoptere-BladeOther › How does the Tail belt drive work anyways?
09-08-2006 05:48 PM  14 years ago
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s0laris

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calgary,ab,canada

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How does the Tail belt drive work anyways?
I see there is a belt around the main shaft, so I assume that is going to move the belt various speeds depending on head speed..

there is a servo that releases and tightens the belt to the tail blade to slow down and speed up the tail blade ?
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09-08-2006 08:22 PM  14 years ago
lryansl

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Yuma, Arizona

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the tail stays at a constant speed it works like the head works, the pitch on the head changes which gives the heli lift. turn it sideways and its the same concept. The servo adjusts the pitch of the tail blades.
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09-08-2006 10:11 PM  14 years ago
s0laris

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calgary,ab,canada

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but if you are in non idle up mode, the tail would spin relative to the head speed.

is that ok ?
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09-08-2006 10:15 PM  14 years ago
Funky Trex

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Westerville, OH - USA

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Yes, this is fine. Instead of the gyro spinning a tail motor faster or slower, the gyro adjusts the tail servo for more/less pitch in the tail baldes which affects how much side to side thrust they create.
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09-08-2006 10:19 PM  14 years ago
s0laris

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ahh that makes sense...

This does seem like a much better solution too..

One less motor to worry about and I assume it does + / - pitch so I will be able to rotate faster counterclockwise now..

same rotation speed
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09-08-2006 10:28 PM  14 years ago
maxchao

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Duluth, GA - USA

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Less weight on the end of the tail so less force to make it turn...
No changing RPM on the "sensitive" tail system makes it much stabler...
I'm just guessing...
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09-09-2006 12:12 AM  14 years ago
copperclad

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NY

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hi
the other thing to think about is with a fixed pitch tail prop ( stock BCP ) there is time lag while the motor speeds up , or down , with a belt drive the servo just changes the pitch of the prop , so there is no time lag , as the pitch change is as fast as the servo you use , dana
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09-09-2006 12:17 AM  14 years ago
s0laris

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calgary,ab,canada

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true so Gyro is probably more effective
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09-09-2006 05:32 AM  14 years ago
shuohan

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Maryland

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solaris, I have a belt drive BCP. On all belt/shaft driven helis the tail rotor rotates at a speed proportional the the main rotor. As stated by others, the tail servo varies the pitch on the tail blade to control the tail. It's much faster to change tail pitch blade than a tail motor speed and thus you can get quicker & more precise control. The HeliDirect belt drive kit for the BCP is pretty low quality. Don't expect a high quality kit. With hours and hours of modifications I've got my BCP flying pretty well. It's about 2/3 of the way between my Trex SE and the stock BCP (closer to the Trex) in terms of performance.

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09-09-2006 04:06 PM  14 years ago
s0laris

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calgary,ab,canada

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That Sucks

Main reason I got hdx300 was because of the Belt drive..

I hate the motors on it too and have had too many unneccessary crashes because the tail motor gave out.
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Home✈️Aircraft🚁Helicoptere-BladeOther › How does the Tail belt drive work anyways?
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