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walkera 4 not enough rudder trim


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shanet
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Joined: 22 Aug 2007
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Location: Sydney, Australia

PostPosted: Wed Sep 05, 2007 11:23 pm
PostPost subject: walkera 4 not enough rudder trim
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Hi All

I have a walkera 4 which I am learning on and I don't seem to have enough trim on the rudder. Trim is set full right and I usually still have to hold the stick a little right to keep the tail pointing towards me. There seems to be an adjustmer on the reciever but i'm not sure what it is for

Shane
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vrthai
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Joined: 03 Aug 2007
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PostPosted: Thu Sep 06, 2007 9:33 am
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Hi Shanet,

This is one of the predominant problems with a micro-motor driven rudder rotor (as opposed to belt driven). The rudder trimming and tail hold will be off once the motor loose any of its capability (which it will, over time). Also, you'll find that when the tail motor is hot, the helicopter will have a hard time keeping its nose and tail straight.

There are two things you can do. First the adjuster on the receiver. On a co-axial helicopter (like the walkera 5#6), that's the blade mixing adjuster. If you turn it clockwise it'll increase the rudder trim one way and if you turn it another way it will trim the opposite direction. I'm pretty sure the function is the same of the Walkera 4. Remember to mark where the original position was with a permanent marker before you trim it - in case it doesn't work and you want to move it back. Don't use conventional screw drivers to do this. Use the small plastic screw driver that they gave you because the adjuster is quite sensitive and a normal screw driver can break it.

Another way is to change the tail motor. But only do this if this symtom is one which was not there when the helicopter was brand new.. Or better yet, go for the Walkera #4 upgrade and change the motor-driven tail rotor to a belt-driven tail rotor (actually, the upgrade set does more than that).

Hope this helps Smile
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Bri.
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Joined: 10 Nov 2008
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PostPosted: Wed Nov 12, 2008 3:56 pm
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vrthai wrote:
.. Or better yet, go for the Walkera #4 upgrade and change the motor-driven tail rotor to a belt-driven tail rotor (actually, the upgrade set does more than that).

Hope this helps Smile


Hello all.
I realize that this is a rather old thread but I was wondering if the belt-driven tail rotor mod spoken about above is still available and would it fit a 4#3?...........Or are Walkera 4 and 4#3 completely unrelated models in terms of size etc?

Thanks in advance for any replies and advise.

Bri.
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silhouette015
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Joined: 06 Jul 2007
Posts: 581
Location: Thailand

PostPosted: Wed Nov 12, 2008 10:02 pm
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Bri. wrote:
vrthai wrote:
.. Or better yet, go for the Walkera #4 upgrade and change the motor-driven tail rotor to a belt-driven tail rotor (actually, the upgrade set does more than that).

Hope this helps Smile


Hello all.
I realize that this is a rather old thread but I was wondering if the belt-driven tail rotor mod spoken about above is still available and would it fit a 4#3?...........Or are Walkera 4 and 4#3 completely unrelated models in terms of size etc?

Thanks in advance for any replies and advise.

Bri.


Helli Bri and welcome to the forum.

Unfortunately, the Walkera 4 and the Walkera 4#3 are two different helicopter and the Walkera 4 is actually much much bigger. This is what it looks like:



It was launched long before the Walkera 4#3 made its debut.
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Bri.
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PostPosted: Thu Nov 13, 2008 5:01 am
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Thanks for the welcome + reply.

^ Yes, this is as I suspected. I am wondering if there any tail rotor upgrades for the 4#3. (Again, I suspect not.)

I think it may be possible to mod a frame to take the necessary gear if there is a VP tail rotor of the appropriate size etc. available. Can anyone point me in the direction of any likely candidates plz?

Any advise is greatly appreciated.

Cheers.

Bri. Smile
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hound15
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Joined: 11 Apr 2007
Posts: 160

PostPosted: Thu Nov 13, 2008 7:22 pm
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Bri. wrote:
Thanks for the welcome + reply.

^ Yes, this is as I suspected. I am wondering if there any tail rotor upgrades for the 4#3. (Again, I suspect not.)

I think it may be possible to mod a frame to take the necessary gear if there is a VP tail rotor of the appropriate size etc. available. Can anyone point me in the direction of any likely candidates plz?

Any advise is greatly appreciated.

Cheers.

Bri. Smile


I suspect there are no tail upgrades for the 4#3 as well. But there are after-market semi - automatic stabilizers though. Check out what it can do in the video section, it is so much more stable and the guy and literally take his hands off the controls.
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Bri.
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PostPosted: Fri Nov 14, 2008 12:58 am
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Thanks. I'll take a look.

How do they work?
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timwag
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Joined: 12 Dec 2008
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Location: north burbs of chicago

PostPosted: Thu Dec 18, 2008 3:20 am
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where can one get a stabilizer? for a4#3
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timwag
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Joined: 12 Dec 2008
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Location: north burbs of chicago

PostPosted: Thu Dec 18, 2008 3:21 am
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or make one i mean its my trade
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vrthai
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Joined: 03 Aug 2007
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PostPosted: Thu Dec 18, 2008 4:24 pm
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timwag wrote:
or make one i mean its my trade


I made a reply for you here
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