Running LGB U Class cab first.

AustrianNG

AustrianNG

Director of my railway
16 Sep 2015
1,066
1,534
Wirral
Those of you that possess a U Class loco or two may have tried to run the loco cab first.
then as soon as the gradient changes, the wagon/ coach behind the loco uncouples

there are two reasons for this:
1. The loop on the loco is a little higher than most stock loops and hooks
2. It is not possible to mount a hook on the front loop unless you are prepared to carry out major surgery on the chassis.

The solution I have implemented on my railway is a simple length of single core copper wire bent into a “U” shape (no pun intended). The wire is about 24mm long and bent into 3 8mm segments and simply hooked over both loops and gently wedged under the central buffer.
D4AC8FEC-B39A-4DDF-B791-799327148A44.jpeg
 
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dunnyrail

dunnyrail

DOGS, Garden Railways, Steam Trains, Jive Dancing,
25 Oct 2009
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Those of you that possess a U Class loco or two may have tried to run the loco cab first.
then as soon as the gradient changes, the wagon/ coach behind the loco uncouples

there are two reasons for this:
1. The loop on the loco is a little higher than most stock loops and hooks
2. It is not possible to mount a hook on the front loop unless you are prepared to carry out major surgery on the chassis.

The solution I have implemented on my railway is a simple length of single core copper wire bent into a “U” shape (no pun intended). The wire is about 24mm long and bent into 3 8mm segments and simply hooked over both loops and gently wedged under the central buffer.
View attachment 270134
Another option (if it works on the U) is to add a 30thou plasticard dropping plate under the coupler.
 
David1226

David1226

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24 Oct 2009
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The solution I have implemented on my railway is a simple length of single core copper wire bent into a “U” shape (no pun intended). The wire is about 24mm long and bent into 3 8mm segments and simply hooked over both loops and gently wedged under the central buffer.

So U're saying U have a U on your U... U know it makes sense.

dig 190304004.JPG

David
 
P

Paul M

Registered
25 Oct 2016
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U bends, that's plumbing the depths that is
 
Jasper

Jasper

Hey, I'm only being creative here.
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Thank you, very "U" sful.
 
trammayo

trammayo

Interested in vintage commercial vehicle, trams, t
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mike

mike

Master at annoying..
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Ull never know.. Ta
 
tac foley

tac foley

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So U're saying U have a U on your U... U know it makes sense.

View attachment 270135

David
I notice the the valve gear is set for reverse - is that an accident of does the loco move the gear dependent on the direction of travel, like it does on my white Pass Mike?
 
David1226

David1226

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I notice the the valve gear is set for reverse - is that an accident of does the loco move the gear dependent on the direction of travel, like it does on my white Pass Mike?

Tac

What's your name, Fred? I don't know, I've never looked, I'd just be happy as long as the wheels turned, which they don't as the loco has not been chipped. Another job on the endlessly growing list. AustrianNG might be able to answer that one as his U-boats move.

David
 
tac foley

tac foley

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? Are you deliberately trying to be obtuse? I asked because, as a runner and owner of live-steam models, I notice this kind of thing. The Aster/LGB White Pass mike actually lifts the valve link when you go into reverse, so that it gives a better representation of reality, unlike the vast majority of locomotive models that seem to move around in mid-gear, regardless of the direction in which they are going. The U Class in your image shows the valving set correctly for moving in reverse, it was not an attempt to impugn your character.
 
PhilP

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
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Having 'had-at' a number (admittedly, older models) there is no linkage / drive to the valve-gear to make it change.. - It may be arranged to move because of the direction of rotation of the wheels ?? But I can't say I have noticed this..

Give me five minutes.. - I have an old model upstairs..
 
PhilP

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
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Took longer to get the pictures from the phone to the computer, than to find the model and take them! :(

IMG_20200717_144034 - web.jpg
An old and slightly battered example..
IMG_20200717_144234_BURST002-web.jpg
This is a separate (solid) plastic moulding.. It is not physically connected to the rest of the motion components.
 
Rhinochugger

Rhinochugger

Retired Oik
27 Oct 2009
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? Are you deliberately trying to be obtuse? I asked because, as a runner and owner of live-steam models, I notice this kind of thing. The Aster/LGB White Pass mike actually lifts the valve link when you go into reverse, so that it gives a better representation of reality, unlike the vast majority of locomotive models that seem to move around in mid-gear, regardless of the direction in which they are going. The U Class in your image shows the valving set correctly for moving in reverse, it was not an attempt to impugn your character.
The thing is, tac, that LGB inhabits a middle land that is partly modelling and partly the world of toys - there are times when they, as a manufacturer don't seem to worry too much either about serious detail or accurate scale.

That's LGB for you, and a lot of people like it for other (good) reasons.
 
dunnyrail

dunnyrail

DOGS, Garden Railways, Steam Trains, Jive Dancing,
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To be fair it is a fact that the greatest majority of ‘Model Trains’ Electrical ones that is do not change Valve Gear Events when they change direction, there is just so much that we can wish for on our plastic dragons. Fair to say that many including me could not tell the difference or even care. Though when watching the real thing when young I was aware of things moving around when changing direction but never bothered to ask what it was or what was occurring. Then my only real interest was the number in the side or front if the Engine to be hopefully underlined as a cop in my ABC. A hobby stolen from me by BR eliminating Steam in 1968 though I did venture to other parts if the World in search of Steam, by then photography was the thing that floated my boat.
 
FrenchChuffed

FrenchChuffed

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I always tried to keep my Boats floating as i made them for 40 years.
 
65 1057

65 1057

Railways @ 1.435 mm/ 1.000 mm/ 750 mm and 45mm
9 May 2018
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Now it's time for a pedantic german engineer.
Lifting up the valve link does only mean "reverse" just in case of INNER steam injection (usually superheated steam; the expanded steam flows on the outer side to the exhaust)


The animated gif that shows the movement.

In case of OUTER steam injection, usually practized with flat slide valves (e.g. the Harz Mallets, or the U class) you lift the valve link to move forward.
The expanded steam flows through the middle to the exhaust.



> pedantic mode off < ;)
 

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tac foley

tac foley

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Now it's time for a pedantic german engineer.
Lifting up the valve link does only mean "reverse" just in case of INNER steam injection (usually superheated steam; the expanded steam flows on the outer side to the exhaust)


The animated gif that shows the movement.

In case of OUTER steam injection, usually practized with flat slide valves (e.g. the Harz Mallets, or the U class) you lift the valve link to move forward.
The expanded steam flows through the middle to the exhaust.



> pedantic mode off < ;)


Please be careful - you may well incur the wrath, ire, vituperation, sarcasm and scorn of those for whom this is way too much unnecessary detail.
 
idlemarvel

idlemarvel

Neither idle nor a marvel
13 Jul 2015
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Thank you 65 1057 65 1057 for the additional detail. For me this is one of the joys of this forum. I have little knowledge of how the various valve gears work but I know that when I do someone on here will be able to help me understand without being patronising. Like dunnyrail dunnyrail says it would be nice if our plastic models reflected that reality but they are complex, fragile and expensive enough as it is.
 
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Flying15

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12 May 2015
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This is a really useful U that should be running services at Swanage today as they reintroduce steam services in the new normal AF8C8B4B-06FC-4F18-94EC-BE77356F4008.jpeg
 
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