71000

On Standard locos the regulator does not have to be open to ensure cylinder lubrication. Steam is supplied to the oil atomisers via the cylinder cock actuating valve. Obviously, a reasonable steam pressure is required.

 

Surely unless you take the con rods down she must be in steam for lubrication purposes.

 

Sheff, I did say that a reasonable steam pressure is required to operate the atomisers, i.e. the loco is in steam.

 

Simultaneous posts STD Tank check the times
I could have quoted the OP but it gets a but tiresome reading the same posts over and over.

 

My apologies Sheff.

 

Headed north through Apsley at 13:45 with 67006 'Royal Sovereign' on the front:
http://aa.photosnaps.org.uk/p69324049.html

and a closer look at 71000 'Duke of Gloucester':
http://aa.photosnaps.org.uk/p69324050.html

Rather nice lunchtime bonus today

Cheers,
Alisdair

 

71000 being watered in P12 at Crewe:

http://tim-fenton.fotopic.net/p69324128.html

--
Tim
http://tim-fenton.fotopic.net/
http://zelo-street.blogspot.com/
@zelo_street on Twitter

 

Caught her at Shilton or Ansty (depends where you come from) Looking a picture!!

http://rickeborallphotography.fotopic.net/

ATB ...RICK

 

Why did she even have to be in steam if she's being towed by a diesel?

 

See post #42 (and previous) above

 

but surely steamers can be towed without needing lubing up on the move ?? What about when Mallard went to Shildon or when Blackmore Vale was towed around the Bluebell by Sir Archie?

 

Mallard had its connecting rods taken off and crossheads secured.

 

OK, this has puzzled me for a while. If your loco has a mechanical lubricator, why is steam still needed. I understand the oil will not be atomised but it will still be there. Is it a temperature thing?

Someone please explain this, for my better understanding and our mutual improvement......

 

Firstly, cylinder oil is more like treacle than oil. It is actually heated up in the lubricator by the use of a pipe coil through which steam is passed. This makes the oil more pliable (if that's the right word). It is then pumped to the atomisers. Steam is then used to atomise the oil, so that when it enters the cylinders and valve chests there is an even spread of oil obtained. Non return valves are fitted to the atomisers, because you also have steam under pressure in the cylinders which would attempt to escape into the lubrication system. I think I've got that right. Anyone like to add to it.?

 

On a loco fitted with sight feed lubricator then steam supply would be essential. Removing connecting rods and securing crossheads would be OK for pistons but balance would then be upset. Valve gear also needs to be thought of. So if possible, much easier to move in steam.

 

I think this is particularly so with ex GW locos.

Edit, just read 32110's post above which says virtually the same thing.

 

I do understand the viscosity of steam oil changes as it heats up and the neceserty to have steam with hydrostatic lubrication but still does the oil have to be atomised. Does it not provide enough protection for short distances. As well as a fireman on the FR I operate many miniture locos that have mechanical cylinder lub with no heating coil or atomisers fitted. The pump just pumps through a clack into the steam line to the valves.