The Murphy Builders Site

Jeffrey, answers IN with your text! Wayne

----- Original Message -----
From: "Jeffrey Steenson" <steenson@flash.net>
To: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
Sent: Friday, January 24, 2003 12:20 AM
Subject: Re: Il est ici

Wayne,

It's always a more pleasant task going to Canada than returning to the

USA!

Don't worry guys/gals, he's refering to freight shipments. Took a month and
a half to get his engine off the border in Detroit (shipped Dec 10, Del NM
Jan 23), where as I just shipped two more cores from Florida and they were
in my hands in 5 days!!

I'm about to start assembling the seats and wonder if I could prevail on
your experience.

The SA-30 seat locking pins have not been drilled for the rings at the top
and the retaining pins at the bottom. Since this is such a small part, is
there any preferred way to dill these without the drill bit slipping off
center? These holes are so small (1/16?), I'm also afraid the bit won't
hold up in this material.

Use a center punch to make a mark at the desired location or grind a very
small flat before trying to drill, others may have some tricks they can
share!

Another question -- The manual tells me to locate the seat rails to suit

the

customer. I'm tall (6-4), but I'd like to remember the shorter pilots

too.

Have you found a happy medium for locating these rails? I notice that the
MAM pictures I have on the CD show the aft end of the rails near Station

8.

Newer kits like yours have longer rails than mine did. I set mine up so the
seat couldn't come off the track going forward (read you don't need to
bother with rail stops at the front end) before the seat unlock bar hit the
control column. I could never sit with the seat all the way back to fly and
I'm 5' 11" tall. Your rails are about 6" longer than mine so should be okay
where ever you put them. This extra allows the seat to go back further for
easier exit from the aircraft.

Also, I note that some builders have built up the back of the seats for

head

support. Is this just a matter of welding an extra piece to the top of

the

frame?

This is MAM's optional high back seat. Maybe someone that has traded in can
note if there is any different structure other than a higher triangle on top
and then you would know if you can just safely modify yours.

Could probably post this on the list, so please feel free to reply that
way.

Many thanks,
Jeffrey

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Jeffrey,

FWIW, I recently drilled the locking pins. I used the edge of a 8" mill file
to make a very small flat, center punched it, and drilled it with standard HSS
bit. Start slowly. Drilled easily. Also, the roll pins can be easily damaged
when you try to install them. A set of roll pin punches helped a lot to set
them without deformation.

Hope this helps.

Roger Hoffman #687R
Eugene, OR USA!

The SA-30 seat locking pins have not been drilled for the rings at the top
and the retaining pins at the bottom. Since this is such a small part, is
there any preferred way to dill these without the drill bit slipping off
center? These holes are so small (1/16?), I'm also afraid the bit won't
hold up in this material.

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Dear Roger and Wayne,

I certainly appreciate your advice on this one. I was going to make up a
little jig, but I think this sounds better.


----- Original Message -----
From: <rognal@dcsol.com>
To: <murphy-rebel@dcsol.com>
Sent: Friday, January 24, 2003 8:41 PM
Subject: RE: Seat assembly and rail positioning

Jeffrey,

FWIW, I recently drilled the locking pins. I used the edge of a 8" mill

file

to make a very small flat, center punched it, and drilled it with standard

HSS

bit. Start slowly. Drilled easily. Also, the roll pins can be easily

damaged

when you try to install them. A set of roll pin punches helped a lot to

set

them without deformation.

Hope this helps.

Roger Hoffman #687R
Eugene, OR USA!

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