Drilling Template.

[Darek]

Hi All,

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

Darek

[Steve Koerner]

I bought one long ago at Aircraft Spruce.

[Westbender]

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

[Richard[_9_]]

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/Instrument%20Hole%20Templates.pdf

Richard
www.craggyaero.com

[JJ Sinclair]

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

[Dave Nadler]

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"

[Darek]

Hi All,

Thank you for help.

Darek

[Dave Nadler]

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"