Kevin.

 

Lynn is on the right path when recommending the whole rigging process.

 

I would like to add that the turn buckles on the chain in the steering column 
are actually only there to fin tune the position of the two yokes in relation 
to each other and also for getting the chain position right throughout the 
whole steering swing , left and right. The chain is calculated precisely and 
over adjusting on one side will create a hard stop on the other side.

 

If you only experience the yoke offset while taxiing but not during flight and 
if both yokes are aligned nicely to each other, I would adjust the steering rod 
to the nose wheel only.

You do that on the bottom of the steering column. However first you should make 
sure that the rigging is correct. 

1. Pull the plane on the nose wheel along a 30 ft straight line and stop, not 
steering left or right.

2. Verify the position of the ailerons and rudders in regards to the airframe. 
Basically, all should line up straight and flush with the airframe.

3. If found offset, turn nose wheel until ailerons align with center section, 
verify that rudders and yokes are straight now too. Then adjust the steering 
rod toward nose wheel to have the nose wheel line up too.

4. If ailerons, rudders and yokes are lining up nicely after pulling the nose 
wheel, you are looking into a different problem. Maybe one brake is dragging ?

5. If you can never align ailerons, nose wheel, rudders and yokes, you need to 
follow the step by step rigging instructions of the Ercoupe hand book.

 

 

Hartmut
 


To: [email protected]; [email protected]
From: [email protected]
Date: Wed, 14 Oct 2009 20:40:06 -0400
Subject: Re: [ercoupe-tech] What possible fix for yoke and nose wheel alignment

  




Hey Kevin: There are three turnbuckles in/on the chains that connect the yokes 
to the column that provides the nose wheel steering (among other things). You 
will have to either have the nose wheel off the ground or located on some slick 
device which will let it turn easily.
    Actually I should ask where the yokes are positioned in straight and level 
flight. Because if they are aligned relatively straight, then you need to go 
through the complete rigging process on pages 24 through 27 in the Ercoupe 
service manual. You should start from there anyway if you have just purchased 
the airplane.
Because just adjusting the turnbuckles to get the yokes relatively aligned with 
the taxi process may end up causing additional problems. I suspect that you 
have the original nose wheel push rod-ball socket joint. I am sorry, I digress.
    You may adjust the wheels on the yokes by adjusting the turn buckles on the 
chains. Good luck with your process.
Lynn Nelsen
 

In a message dated 10/14/2009 7:56:24 P.M. Eastern Daylight Time, 
[email protected] writes:
What should we look for to align these.
The yoke(s) are off center by almost 45 degrees when taxing.

   Keep the Blue Side Up
   Kevin Lee N2583H (DVN)



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