Overhead Confusion.

[No Longer Active]

I am helping my dear friend (try) build an overhead for his 737ng and am looking for the size of just the forward panel (not the AFT), according to the opencockpits website the panels put together measure 662 x 787mm, but I have hears differently from various members. So what is the measurement of the forward overhead?

EDIT: Does this sound right: 'forward: 26"X28" 66cmX71cm'?

Cheers.

Alex

[jonnydaz53]

Hi is your friend local as i have a overhead panel bare at the moment maybe we could hook up and you could take some measurments.

Regards Jonny d

south benfleet

[No Longer Active]

Hi he lives in Birmingham, I am taking a trip up there in a few weeks time to help him make a frame but needs the overhead measurement to be correct first time round. I should be able to make a visit to you, and maybe you could show me a few things or two. I'm in Basildon so would easily be able to make a trip to yours. I will send you a PM very soon and maybe we can hook up or something.

Kind regards. Alex

[Joe Cygan]

I am helping my dear friend (try) build an overhead for his 737ng and am looking for the size of just the forward panel (not the AFT), according to the opencockpits website the panels put together measure 662 x 787mm, but I have hears differently from various members. So what is the measurement of the forward overhead?

EDIT: Does this sound right: 'forward: 26"X28" 66cmX71cm'?

Cheers.

Alex

The extreme metal edges are 26 1/8" X 27 15/16"

[No Longer Active]

The extreme metal edges are 26 1/8" X 27 15/16"

So what's this in mm? I don't understand inches?

Sorry if it sounds like a dumb question!

Would this be the actual size of the whole forward overhead if I was to make it one panel, excluding frame?

Cheers.

Aj

[Wendy]

According to marcuspilot, I always take him as my reference, the measurements for the overhead are: width 670 mm and length 675 mm.

There is a pdf on his website with all the measurement. The overhead is listed on page 32.


Hope this helps,

Regards Wendy

[Jylhami]

So what's this in mm? I don't understand inches?

Sorry if it sounds like a dumb question!

Would this be the actual size of the whole forward overhead if I was to make it one panel, excluding frame?

Cheers.

Aj

1 inch = 25,4mm so

26" 1/8 =
26" = 26 * 25,4 = 660,4
+
1/8" = 25,4/8 = 0,675

= 661,075mm ~ 661mm

27" 15/16 =

27* 25,4 = 685,8mm
+
25,4 / 16 * 15 = 23,8125mm

= 709,6125mm ~709,5mm

[Joe Cygan]

So what's this in mm? I don't understand inches?

Sorry if it sounds like a dumb question!

Would this be the actual size of the whole forward overhead if I was to make it one panel, excluding frame?

Cheers.

Aj

Alex the 1/8 is a fraction of one inch. If you were to divide one inch into equal 8 parts that is what the second number of 1/8 means. The one in front of the eight represents the measurement I need. So, it is 26 inches and one eighth of an inch, probably the equivalent of two coins stacked together. Same thing for the 15/16. We have just divided one inch into 16 equal parts(fraction) and the 15 in front of the 16 represents the measurement we need., we need fifteen parts of the sixteen for our measurement. 15/16 is almost one inch but is short about the thickness of a thin coin. Unless you do not have a scale is would be pretty hard to see what I’m trying to convey to you.

For the most part 26"X 28" is close enough as you would not be able to tell the difference with the naked eye.

[No Longer Active]

Now I need to get the right size!

Jylhami / Joe Cygan says: 661 x 709.5 / 26 1/8" X 27 15/16"

Wendy refers to Markuspilot: width 670 mm and length 675 mm

JackPilot: 660cmX710cm

Opencockpits: 662 x 787mm

There is a lot of difference between them all.

Which one is right? Now I really lost and does not know which is the right measurement, I didnt think it would be this hard to work out?

Are all 737ng overheads a different size?

Thanks.

Alex

[Joe Cygan]

Well Alex I have two real overheads sitting in my office. I measured both of them for you and they both are the same dimensions. One is from a three hundred series and the other is from a four hundred series. The overheads to my knowledge have stayed the same dimensionally throughout all the series including the NG.

Have you tried throwing darts?

Joe

[No Longer Active]

Ok Joe, I take I will take your dimensions so many thanks for that....

Have I tried throwing darts?....180 every time lol!

[Joe Cygan]

Ok Joe, I take I will take your dimensions so many thanks for that....

Have I tried throwing darts?....180 every time lol!

Just trying to throw some humor in this post as dimensions can really be a lengthy topic.

P.S. Be prepared as I'm sure there will be more posts telling you of different sizes.

[No Longer Active]

....I guess there will be many more sizes to come, just needed something standard to work on, the overhead will be made a whole panel and wasnt too sure if the gaps between the panels counted as the final size instead of all the panel butted close together, if there was lets say 3-5mm between each column then that would change the overall size.....just wanted to get it right first time.

Thanks anyway!

Aj

[Sean Nixon]

So what's this in mm? I don't understand inches

The tape measure you will use to mark out the dimensions will have mm down one side and inches down the other.

And to add more to your dilema, the Engravity FWD OHD mounting frame is 663 x 712mm, and the enclosure it sits in is 665 x 715mm.

Your original sizes were pretty close.