Second-gen Model M measurements needed urgently!

[Chyros]

Hiya guys, I just noted that NONE of the Models M I have left are second-gen. Could someone please do some measurements of one for me? I need them for a video.

Second gen is grey-badge models that don't have the rainbow plate, but the thick matte grey plate instead, such as most 1391401. The UK plant switched to grey plates later, so all the 1391406s I have left are rainbow plate.

Please use digital scales and calipers to measure them!

Could I have the following measurements please:

-total keyboard weight (minus cable)
-case weight (top plus bottom, no controllers, just the two PVC shell parts plus badge)
-plate thickness (should be between 1.0 and 1.2 mm, might take some wiggling to get a good measurement)

Thanks guys!

[chip chop]

Dunno if this is any use? http://imgur.com/a/PDwlz

[Chyros]

Eh, it's a start, but I need more info on it before I can really do a second-gen entry.

[unoquepasa]

Hi, Chyros.

These are the weight measurements you requested, from my 1991 bolt-modded 1391405 model M from Greenock.

Keyboard weight without cable: 2017 grams.
https://drive.google.com/file/d/0Bzn3Cf ... sp=sharing

Upper and bottom cases weight: 795 grams.
https://drive.google.com/file/d/0Bzn3Cf ... sp=sharing

I don't own a digital caliper. I can take measurements with an analog one, if you wish.

[Chyros]

Sure, if it can reliably give measurements, an analog one would work too . I guess the keyboard weight includes the bolts on your one?

[unoquepasa]

Yes, the weight measurement includes bolts (x58), nuts (x50) and washers (x50).

The steel plate thickness is 1.0 mm. The same as my 3rd generation 1391405 from late 1992.

[clickykeyboards]

Data points from a (1991) 1391401 (04-08-91)
http://clickykeyboards.com/product/1991 ... -04-08-91/

DSC_0074.jpg (1.18 MiB) Viewed 2341 times

-total keyboard weight (minus cable)
2.06kg

DSC_0064.jpg (1.58 MiB) Viewed 2341 times

-case weight (top plus bottom, no controllers, just the two PVC shell parts plus badge)
0.82kg

DSC_0065.jpg (1.49 MiB) Viewed 2341 times

model M internals with key caps, buckling springs, conductive layers, controller, metal plate
1.24kg

DSC_0066.jpg (1.55 MiB) Viewed 2341 times

-plate thickness (should be between 1.0 and 1.2 mm)
1.0mm

DSC_0068.jpg (1.48 MiB) Viewed 2341 times

[Chyros]

Thanks guys, this greatly helps the video .

[unoquepasa]

You are welcome. Glad to help in the making of one of your videos.