The Murphy Builders Site

Posted: **Fri Feb 17, 2012 9:17 pm**

In a message dated 10/14/01 10:51:08 AM Central Daylight Time, oifa@irishfield.on.ca writes:

Bob, read your first flight note again and noticed you had to hold a little
right rudder. If that's the case just shorten the right rudder tension
spring about a loop at a time, or drill another hole in the bath tub fitting
just forward of the original one so it pulls a little harder than the left
one until it flies "ball centered". Better way to fix than adding a draggy
trim tab! I have a feeling that, if you lift the tailwheel off the ground,
you will find that your pedal springs are pulling left rudder and you are
just making up for it by pushing right rudder!! Next time you fly it look
back (if you have rear skylights) and see if the rudder tip is aligned with
the forward edge of the fin when holding the required rudder pressure. If
it's aligned your fin position selection was correct and it is just one
pedal spring overpowering the other.

Wayne

It's insight and tricks like this that make you so valuable to this list! Thanks WAYNE.
Phil&Lisa Smith #460R N414D

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Posted: **Fri Feb 17, 2012 9:17 pm**

Don't swell my head Phil!

I will take credit for knowing that on most Rebels I have worked on they seem to pull the rudder, on their own, to one side or the other. The manual just tells you to drill and install springs with no regard for what effect it has on rudder positioning. The extra holes in the bath tub fitting I have to credit to Drew D. as I believe it was his post that spelled this out for rudder adjustment/tweaking using a row of evenly spaced holes.

Take care,
Wayne G. O'Shea
www.irishfield.on.ca

----- Original Message -----
From: LisaFly99@aol.com (LisaFly99@aol.com)
To: murphy-rebel@dcsol.com (murphy-rebel@dcsol.com)
Sent: Sunday, October 14, 2001 12:11 PM
Subject: Re:rudder tweaking

In a message dated 10/14/01 10:51:08 AM Central Daylight Time, oifa@irishfield.on.ca (oifa@irishfield.on.ca) writes:

Bob, read your first flight note again and noticed you had to hold a little
right rudder. If that's the case just shorten the right rudder tension
spring about a loop at a time, or drill another hole in the bath tub fitting
just forward of the original one so it pulls a little harder than the left
one until it flies "ball centered". Better way to fix than adding a draggy
trim tab! I have a feeling that, if you lift the tailwheel off the ground,
you will find that your pedal springs are pulling left rudder and you are
just making up for it by pushing right rudder!! Next time you fly it look
back (if you have rear skylights) and see if the rudder tip is aligned with
the forward edge of the fin when holding the required rudder pressure. If
it's aligned your fin position selection was correct and it is just one
pedal spring overpowering the other.

Wayne
It's insight and tricks like this that make you so valuable to this list! Thanks WAYNE.
Phil&Lisa Smith #460R N414D