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steerable tail wheel

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john melia 109/04/2017 20:59:27
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1770 forum posts
24 photos

I'm busy installing servs into this seagull glasair i bought recently, in total the model will have eight servos , i am going to use a spektrum ar8010T RX , the manual states the tailwheel has its own servo which operates the tail wheel via a pull pull normal arrangement

my question is how do i steer this tail wheel , do i Y lead it with the rudder servo (rudder servo and tailwheel servos are not the same ), it seems a bit overboard to me , what are your thoughts

could i not just fix the tail wheel so it doesnt turn at all

Denis Watkins09/04/2017 21:30:23
4177 forum posts
83 photos

Woe, fit the steering John, the push pull is a faff, but is a servo saver.

Use a Y lead, and reverse the rudder or the tailwheel servo mounting to get the correct sense

Or if you have multichannel Tx, then slave the tail servo from the rudder channel

I would not advise a castoring taildragger

cymaz09/04/2017 21:30:24
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9019 forum posts
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Just looked up the manual....it leaves a lot to the imagination.

I would say go with a Y lead and see how it goes.

iqon09/04/2017 21:38:17
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1480 forum posts
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I used a Y lead

john stones 109/04/2017 21:42:13
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11152 forum posts
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Slave it then you can set how much it moves.

Don Fry10/04/2017 06:56:39
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4557 forum posts
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Got to steer it, I've got a castering taildragger. Not again.

Cuban810/04/2017 07:27:57
2866 forum posts
1 photos

Yep, castering tail wheels are a pain. Any sort of breeze and the model just weathercocks into wind as you taxi. Steerable for me now, no matter what the model.

cymaz10/04/2017 17:24:10
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9019 forum posts
1187 photos
Posted by Cuban8 on 10/04/2017 07:27:57:

Yep, castering tail wheels are a pain. Any sort of breeze and the model just weathercocks into wind as you taxi. Steerable for me now, no matter what the model.

It's like driving a dodgem car on roller skates....not recommended face 3

Martin Harris10/04/2017 17:38:50
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9160 forum posts
229 photos

A fixed tailwheel is also an option...

Former Member10/04/2017 17:44:59
3578 forum posts

[This posting has been removed]

Martin Harris10/04/2017 17:55:33
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9160 forum posts
229 photos

I've programmed my left thumb for that task!

Denis Watkins10/04/2017 17:59:37
4177 forum posts
83 photos

Ahh but?

You can fly properly Martin

Martin Harris10/04/2017 18:02:21
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9160 forum posts
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Sometimes...blush

Former Member10/04/2017 18:11:38
3578 forum posts

[This posting has been removed]

Don Fry10/04/2017 19:20:29
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4557 forum posts
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Fixed is good, I was flying my Fokker D VII this morning. The wind direction was unkind, but with a bit od rudder, and aileron to hold it straightnand level, it got down. But once down, with only a skid, it's a joy to move on the ground.

Denis Watkins10/04/2017 19:23:36
4177 forum posts
83 photos

Ahh but Donald?

You can fly properly, like Martin and Tom,

Imagine a novice on "page 1" flying rudder, with no tail wheel steering?

Edited By Denis Watkins on 10/04/2017 19:24:22

Don Fry10/04/2017 19:41:28
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4557 forum posts
54 photos

Fair enough, but fixed is still a load better than a castoring tail wheel. Mine last week, sitting ready to roll, got struck by a side wind, and simply moved though 90 degrees into wind, like a sail boat with a broken rudder.

I detest predictive spell checkers.

Edited By Donald Fry on 10/04/2017 19:42:46

Denis Watkins10/04/2017 20:22:47
4177 forum posts
83 photos

Ha ha Donald, my tablet always addresses my friend Les, as Led

It is a nuisance

Rich too10/04/2017 22:29:42
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3057 forum posts
1070 photos

Is the rudder on closed loop? Perhaps add another pull pull from the same servo to the wheel, with the usual spring on the tail wheel end. That's what I would do rather than another servo.

Nice looking model btw.

 

Edited By Rich2 on 10/04/2017 22:31:05

john melia 111/04/2017 08:16:46
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1770 forum posts
24 photos

all sorted , i put the flaps on a Y lead ,giving me one channel spare (ar8010t) which i re-assigned to rudder , all works perfect , just waiting for a saito 125a to arrive in the next two days

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