Drilling Template.

Hi All,

I'm looking for a drilling template for Cambridge 302 and 303.
Can anybody help?

Darek

I bought one long ago at Aircraft Spruce.

They fit the standard 57mm (2.25") instrument panel holes. Can't you
just take a 57mm instrument out of your panel and trace the instrument/
screw holes onto a piece of paper or cardboard?

On Nov 22, 3:36*pm, Darek wrote:
Hi All,

I'm looking for a drilling template for Cambridge 302 and 303.
Can anybody help?

Darek

On Nov 22, 1:36*pm, Darek wrote:
Hi All,

I'm looking for a drilling template for Cambridge 302 and 303.
Can anybody help?

Darek

Darek,

Instructions for constructing the perfect instrument hole.

http://www.craggyaero.com/Drawings/I...0Templates.pdf

Richard
www.craggyaero.com

On Nov 22, 1:36*pm, Darek wrote:
Hi All,

I'm looking for a drilling template for Cambridge 302 and 303.
Can anybody help?

Darek

I cut the head off some old junk instruments to make a perfect
drilling jig. Have one cut off an 80mm and another cut off a 57mm
instrument. Add another from an altimeter so's you get the cut out at
7 o'clock and your good to go. Helps in arranging things on the back
of a new panel to see just where everything must go. Not all
instruments are created equal..............measure twice, cut once!
Cheers,
JJ

On Nov 23, 9:43*am, JJ Sinclair wrote:
I cut the head off some old junk instruments to make a perfect
drilling jig. Have one cut off an 80mm and another cut off a 57mm
instrument. Add another from an altimeter so's you get the cut out at
7 o'clock and your good to go. Helps in arranging things on the back
of a new panel to see just where everything must go. Not all
instruments are created equal..............measure twice, cut once!
Cheers,
JJ

That's what I did. Tips:

Use some wingtip around the flange until the shell fits tight
in the new hole, which centers it and keeps it from moving
while you're marking the holes.

Use a centering punch to make precise marks for the holes.

Also, a metal "hole reducer" from Aircraft Spruce will
work in a pinch.

Hope that helps,
See ya, Dave "YO electric"

Hi All,

Thank you for help.

Darek

On Nov 23, 10:34*am, Dave Nadler wrote:
On Nov 23, 9:43*am, JJ Sinclair wrote:

I cut the head off some old junk instruments to make a perfect
drilling jig. Have one cut off an 80mm and another cut off a 57mm
instrument. Add another from an altimeter so's you get the cut out at
7 o'clock and your good to go. Helps in arranging things on the back
of a new panel to see just where everything must go. Not all
instruments are created equal..............measure twice, cut once!
Cheers,
JJ

That's what I did. Tips:

Use some wing-tape around the flange until the shell fits tight
in the new hole, which centers it and keeps it from moving
while you're marking the holes.

Use a centering punch to make precise marks for the holes.

Also, a metal "hole reducer" from Aircraft Spruce will
work in a pinch.

Hope that helps,
See ya, Dave "YO electric"