[modeleng] Re: it's a bit quiet here...

Kenny

Thinks ! Perhaps you can buy them at the dummy rivet head suppliers ?

Seriously.  Every time I see terms like "real butter", I think, "what's
un-real butter ?" or in other words, butter is butter - so the word "real"
is not necessary.  Ditto "real leather"

So is "a dummy rivet head" a dummy head for a real rivet or a dummy rivet
with a real head.  Strange how the mind wanders when there's not too much
traffic on the DL.

On A. N. Other subject, someone on this DL - or maybe another one (see
previous comment about "mind wandering") - asked why their lathe speed
controls don't work at low temperatures.  Simple answer is that they weren't
designed correctly for the range of temperatures in which they are operated
by the typical buyers.  Someone got the Customer requirements wrong !

Some components, for example electrolytic capacitors and batteries, suffer
considerable reduction in their "capacity" as temperature falls.  Some
components have an increase in value as the temperature falls.  In
consequence, it's not that the circuit "actually fails", it's just that
parts of it may not produce a high enough signal to operate the next part
so, in effect the circuit stops operating correctly at a particular
temperature.

Try looking at the specification and you may find it has an operating
temperature range - eg minus 10 to plus 40 degrees C.  That would be about
right for a model engineer since he wouldn't want to be in a workshop colder
than minus 10 or hotter than plus 40.  I would suspect that the actual spec
is plus 10 to ????

Good equipment - like what I've designed in the past - usually quotes
storage temperature & humidity range and operating temp & humidity range.
Sometimes the latter is extended by stating that a particular function
cannot be used - or other factors such as "the equipment will operate
between minus 10 and minus 20 degrees C, but battery life will be halved"

More technical explanations can be provided on receipt of a good copy of the
circuit diagram and the usual consultancy fee - cash, no personal cheques.

Keep steaming folks
Andy 

-----Original Message-----
From: modeleng-bounce@xxxxxxxxxxxxx [mailto:modeleng-bounce@xxxxxxxxxxxxx]
On Behalf Of kenny
Sent: 29 March 2006 17:33
To: modeleng@xxxxxxxxxxxxx
Subject: [modeleng] Re: it's a bit quiet here...

 Hello a friend of mines is looking for dummy copper rivet heads for gluing 
to the water tanks of his 3 1/2 gauge loco for detail anybody know where to 
buy them
Kenny
Skye



----- Original Message ----- 
From: "John Buckley" <jbuckley@xxxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Wednesday, March 29, 2006 5:18 PM
Subject: [modeleng] it's a bit quiet here...


> Cutting gear blanks for an IC engine that is "under" way. Also some
> teachings at tafe (I need the money).
> John
>
>
> MODEL ENGINEERING DISCUSSION LIST.
>
> To UNSUBSCRIBE from this list, send a blank email to,
> modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject 
> line.
> 


MODEL ENGINEERING DISCUSSION LIST.

To UNSUBSCRIBE from this list, send a blank email to, 
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject
line.

MODEL ENGINEERING DISCUSSION LIST.

To UNSUBSCRIBE from this list, send a blank email to, 
modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.

Other related posts: