Very fast rise time generator...

[The Natural Philosopher]

On 23/05/2023 15:33, John Larkin wrote:

On Tue, 23 May 2023 13:08:49 +0200, \"Carlos E.R.\"
robin_listas@es.invalid> wrote:

On 2023-05-21 04:26, Commander Kinsey wrote:
On Sun, 23 Apr 2023 13:24:52 +0100, Carlos E.R.
robin_listas@es.invalid> wrote:

On 2023-03-16 19:21, Commander Kinsey wrote:
On Mon, 13 Mar 2023 05:45:10 -0000, rbowman <bowman@montana.com> wrote:

On Sun, 12 Mar 2023 22:43:31 -0400, ? Mighty Wannabe ? wrote:

rbowman wrote on 3/12/2023 10:05 PM:
On Mon, 13 Mar 2023 00:30:39 -0000, Commander Kinsey wrote:

On Thu, 02 Mar 2023 03:09:14 -0000, rbowman <bowman@montana.com
wrote:

On Wed, 01 Mar 2023 15:05:31 -0000, Commander Kinsey wrote:


Why were they never made of something more grippy than highly
polished steel?
https://en.wikipedia.org/wiki/Mount_Washington_Cog_Railway
Should be used on all tracks, then perhaps trains could stop in the
distance my car is required to by law.
Do the math. A fully laden coal car weighs about 140 tons. I\'ve never
been bored enough to count cars when I stopped at a crossing but
there
are a lot of them. Let\'s say 30 for the sake of argument, 4200 tons
plus the weight of the engines. Let\'s say 4 at 200 tons each. So,
roughly 5000 tons traveling at 50 mph. That\'s quite a bit of kinetic
energy to dump in 300\'.
I can hear snapping axles and see flying wheels.


The wheels and the rails are steel. A train can never have enough
friction to stop at a short distance. The brakes can lock all the
wheels
but the train will still move forward due to inertia.

The reference was to the Mt. Washington Cog Railway. The wheels are for
guidance but the motive power is a rack and pinion.

https://en.wikipedia.org/wiki/Rack_railway

At least on Mt Washington it\'s only the engine and a small passenger
car
operating at less than 10 mph. They\'re not feasible for general use.

Surely cogs can go over 10mph.  Your car gearbox is full of them turning
at very high speed.

Inside a box full of oil.

I had a radio controlled car with a gearbox without oil.

how many thousand miles did it last?

How fast did it go?

Plenty of model gears are of self lubricating plastics. brass pinion and
teflon gear works well.
None of my model plane gearboxes lubricate the gears, only the bearings
a a little

Those fly in the 20-40mph area as it happens, because I am more
interested in enjoying flying them than using them as a penis extension

--
“There are two ways to be fooled. One is to believe what isn’t true; the
other is to refuse to believe what is true.”

—Soren Kierkegaard

 

[Commander Kinsey]

On Thu, 18 May 2023 16:22:50 +0100, rbowman <bowman@montana.com> wrote:

On Wed, 17 May 2023 21:25:00 +0100, Commander Kinsey wrote:

On Mon, 17 Apr 2023 22:12:36 +0100, rbowman <bowman@montana.com> wrote:

On Mon, 17 Apr 2023 15:32:19 +0100, The Natural Philosopher wrote:

On 17/04/2023 14:19, Max Demian wrote:
On 17/04/2023 10:41, The Natural Philosopher wrote:
On 16/04/2023 19:31, Ed P wrote:

Amazing how many people in recent years never travelled more than a
few miles from home.

It is the new Green Future.

Yeah. the \"fifteen minute city\". So everything you need is no more
than a mile from where you live. No chance.

No. so everything you need is delivered to you in half an hour and you
never need leave the house

I think my ex is on that plan. Between limited mobility, covid, and
crime in NYC she doesn\'t get out much.

Why does anybody live in NYC? It sounds like a shithole.

Career move. She had been talking about at least getting out on Long
Island but it would be difficult with limited mobility. In the city you
can get about anything delivered and she uses a car service if she has to
go someplace.

Surely deliveries go outside cities. Maybe you pay a bit more, but your house is way cheaper.

 

[Commander Kinsey]

On Tue, 23 May 2023 15:33:58 +0100, John Larkin <jlarkin@highlandsnipmetechnology.com> wrote:

On Tue, 23 May 2023 13:08:49 +0200, \"Carlos E.R.\"
robin_listas@es.invalid> wrote:

On 2023-05-21 04:26, Commander Kinsey wrote:
On Sun, 23 Apr 2023 13:24:52 +0100, Carlos E.R.
robin_listas@es.invalid> wrote:

On 2023-03-16 19:21, Commander Kinsey wrote:
Surely cogs can go over 10mph. Your car gearbox is full of them turning
at very high speed.

Inside a box full of oil.

I had a radio controlled car with a gearbox without oil.

how many thousand miles did it last?

How fast did it go?

Faster than it should, I overvolted the motor.