Why was 47186 called “ catcliffe demon “

[rob D2]

Hi,

I understand pupils from catcliffe school named it, and apparently the demon bit means “ Diesel engine monitoring “, 

 

did they invent the system or something ?

 

just intrigued .

[Simon Bendall]

Explanation from Colin Marsden's naming book - Loco fitted with DEMON Diesel Engine MONitoring device, unveiled by pupils of Catcliffe school which is adjacent to Tinsley depot following a competition

[russ p]

37512 thornaby demon also had the equipment as did 506 which it was tried to be kept with .

Both had little aerials on one nose behind the NRN ones

[seraphim]

DEMON was an early attempt at remote condition monitoring of diesel engines. It gives you the comfort of knowing exactly why the engine has just gone bang.

[boxbrownie]

4 minutes ago, seraphim said:

DEMON was an early attempt at remote condition monitoring of diesel engines. It gives you the comfort of knowing exactly why the engine has just gone bang.

Such a shame it didn’t give a warning just before it went bang 

[rob D2]

Ah ok, 

that’s it then . I was thinking if renunbering a Bachmann 47365, did it have an aerial or anything ?

[russ p]

1 hour ago, rob D2 said:

Ah ok, 

that’s it then . I was thinking if renunbering a Bachmann 47365, did it have an aerial or anything ?

 

It would more than likely have had one but I didn't notice where it was on it .

The aerial was about three inches high similar to car phone aerials of the time 

[fiftyfour fiftyfour]

On 07/11/2020 at 18:07, boxbrownie said:

Such a shame it didn’t give a warning just before it went bang 

Oh, the best one was 43169 (when some GWT power cars had trial DEMON fitments)- it had a pretty impressive fire and tried to ring base to alert them, but it was the Sunday of a bank holiday weekend and nobody was there, so it carried on burning on the back of the train until it got to Bristol Parkway and someone spotted it. 

[david.hill64]

On 08/11/2020 at 02:07, boxbrownie said:

Such a shame it didn’t give a warning just before it went bang 

Actually it did. The team at Derby warned Thornaby that there was a problem on a specific cylinder of the 37 fitted with the Demon equipment. Thornaby fitters couldn't find anything wrong but at the next overhaul the cylinder head was found to be cracked.

 

The whole main point of condition monitoring is to permit predictive maintenance as well as an aid to fault finding.

 

As well as diesel engine monitoring, one of the LM 321 units was fitted with a door monitoring system that was able to identify 21 (IIRC) different fault conditions and predict when these would become critical using a neural network program.

 

All this was over 30 years ago and it has taken this long for the industry to catch up with what BRR was doing.

[GRUNFOS]

And 22 years before that,

 

 

 

 

"Just a moment. Just a moment. I've just picked up a fault in the AE-35 unit. It's going to go 100% failure in 72 hours."

 

Fetching hat and coat, making sharp exit.