On Thu, 10 May 2018 03:29:16 +0100, wrote:

On Wed, 09 May 2018 21:11:15 +0100, "Jimmy Wilkinson Knife"
wrote:

On Wed, 09 May 2018 20:22:08 +0100, wrote:

On Wed, 09 May 2018 17:39:52 +0100, "Jimmy Wilkinson Knife"
wrote:

On Wed, 09 May 2018 01:42:57 +0100, wrote:

On Tue, 08 May 2018 21:37:28 +0100, "Jimmy Wilkinson Knife"
wrote:

On Tue, 08 May 2018 21:07:08 +0100, wrote:

On Tue, 08 May 2018 15:17:57 +0100, "Jimmy Wilkinson Knife"
wrote:

I'm surprised glass can support the weight of those things.

Window shakers sit on the sill and that carries most of the weight,
The window frame keeps it from falling out. The new ones are really
pretty light and they don't actually "shake" much. Some of those old
ones took two people to pick up and they rattled the pictures on the
wall when the compressor shut down.

I'm surprised they could rattle pictures without shattering the glass they were touching.

The glass was typically in a wooden frame and pretty well insulated
from the vibration.

And the pictures on a seperate wall weren't?

You must have some pretty fragile glass there if vibrating the frame
shatters it.

My point is to move a picture you must be shaking the entire wall. That's a lot of shaking.

This was just a momentary thing as the compressor cycled down, not a
constant vibration. The new ones don't really do that. These were old
piston compressors that were huge compared to the ones today. A 1 ton
window shaker weighed over 150 pounds and ran on 240v. Now you can get
an inverter model that weighs about 80 pounds and runs on 120 @ 8.25a
(990w).

1 ton weighs 150 pounds? Something not quite right there. Do they move a ton of air or something?

--
Washing a cat is like trying to clean out a food processor while it's switched on. -- Neil Allen, circa 2014