Author Topic: American Limited N Heavyweight diaphram dimensions  (Read 294 times)

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Iain

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American Limited N Heavyweight diaphram dimensions
« on: May 02, 2026, 05:57:34 PM »
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Can someone measure the width and height for the American Limited N Heavyweight diaphram in mm? 
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thomasjmdavis

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Re: American Limited N Heavyweight diaphram dimensions
« Reply #1 on: May 02, 2026, 08:41:40 PM »
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Opened a new "heavyweight" pack to be sure I wasn't giving you streamlined dimensions.

The "frame" (as they call the part in the instructions- the part that fits against the car) is 15.95 mm high x 8.3 mm wide (outside dimensions). The striker plate is a bit smaller, 14.1 mm high x 7.8 mm wide.  As measured with my genuine cheap made in China digital caliper.

Hope that helps. 

I was going to refer you to the American Ltd. webpage, because I was sure they listed dimensions.  Which they do. For the N scale diaphragm, they list 2 inches tall x 1.5 inches wide.  Which would be... I dunno... O scale?  and the width is out of proportion in any case.
Tom D.

I gave up rivet counting when I couldn't see an N scale rivet anymore.

Iain

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Re: American Limited N Heavyweight diaphram dimensions
« Reply #2 on: May 03, 2026, 10:18:47 AM »
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Yeah, I went to the webpage first.


Can you do the inside opening of the frame, as well?  I'd like to design the ends of this passenger car to match.
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thomasjmdavis

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Re: American Limited N Heavyweight diaphram dimensions
« Reply #3 on: May 03, 2026, 11:37:28 AM »
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Inside opening of the frame piece is 12.7 h x 6.5 w.  The HW version is flat on the back- no tabs like the streamline version.

Out of curiosity, what car are you modeling?
Tom D.

I gave up rivet counting when I couldn't see an N scale rivet anymore.

Iain

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Re: American Limited N Heavyweight diaphram dimensions
« Reply #4 on: May 03, 2026, 10:08:44 PM »
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I'm doing an NS wood coach
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