RLWP

Plastic wheels? Richard

Are you sure about that? To me it looks like a very long piston running in an even longer cylinder. At the end of the stroke a lot of piston is sticking out of the bore, you can see the change in colour of the materials Not a bad way of getting a big bearing surface for the oscillating piston There's a fundamental problem though. With an oscillator you only get a push from the piston once per revolution. With a two cylinder engine, it makes sense to time the two pistons at 180 degrees to each other to equal the pulses. But you can't 'quarter' connecting rods at 180 degrees, they will overcentre and lock (as I found as a kid dismantling Triang locos) You could quarter the wheels and accept an uneven 'puff' Richard

To be honest, if it works I would leave it alone. It is never going to be an accurate representation of anything, so it is what it is No matter how it looks, if it does work whoever built it deserves some respect for making an operating steam engine Richard

They still oscillate, notice the backplate is sitting at an angle to the brass 'frame'. You'll probably find it exhausts straight out under the front running board Clearly the builder had a big box of brass cheesehead screws Richard

502 errors here, View New Content searches take several seconds, 'storing' posts takes many more Chrome 73.0.3683.86 Windows 10 Richard

Slow for me on Chrome, and occasionally times out with a (from memory) 502 error. It's been like that ever since the upgrade This probably belongs in a different thread Richard

So, does it comply with "Safety Points - worked scotches or derailers may be used in instead of safety points where protection is necessary." ? It sounds like a piece of shunters safety equipment, not a piece of signalling equipment I'm not denying it's usefulness in a shunting yard, it clearly would do what is intended of it. I'm trying to work out if it would satisfy the BOT if it is not somehow interlocked. I'm not expecting point rodding or some kind of positive link to a signalbox, perhaps a key to unlock it that can only be released when a set of sidings is isolated from a running line Richard

If he has to remember to drag it back, what's the point of having it?

How is the use of that controlled? The other derailers are obviously linked to a signal box, I can't see anything on that, not even a padlock Richard

"in the most accurate way possible" is an interesting idea. As there is so little information, you could do almost anything within the dimensions of the very few drawings, and it's unlikely anyone could prove you wrong. Or you could do a huge amount of research about early locomotive design in general, and for Crewe specifically, and still end up with something that it is unlikely that anyone could prove you wrong (or right!) Did you make any progress @Killian keane ? Richard

The mechanism ringed looks like the lifting links for the valve gear Locomotives of this era rarely had brakes Richard

I usually order the NEM pocket couplings now. The 'lump' that goes in the NEM pocket is formed by folding the coupling shank over a couple of times. Therefore the unformed shank seems to be longer that the other kinds of coupling I find the longer shank more adaptable for the various projects I do Richard

So, that's the answer to the Rolling Stone's question

A couple of locos come to mind. The LNWR 4' tank: sold to Kynoch Ltd, Witton in 1919 and now preserved And probably the most famous: https://en.wikipedia.org/wiki/Stephenson's_Rocket#Service Richard

That sounds better, I was mislead by the diagram So, have you decided how to signal your railway? Richard

I'd say, compared to the gradient to get the quarry line over the other line, signalling is going to be a small problem. Have you worked out the gradient?

In 1878, the L&NWR worked the whole of Kenilworth station with a single seven lever ground frame. It was similar to this arrangement in that Lockharts Sidings (to the brickworks) was included in the scheme No signal cabin of course - the L&NWR didn't spend money if they didn't have to Richard

Out of interest, where would 'station limits' begin on the 'L&Y' end? Presumably far enough up the line for the whole of the quarry train to be inside while waiting for the quarry road to clear? Or would you hold the quarry train outside station limits until it's road is clear? Richard

Take him to the pub first

Which introduces two new things. The quarry train must stop to collect a token - how is that made to happen? And I like the 'hopefully' . Let's hope the derailed train (not just a single wagon) doesn't foul the passenger line Being serious for a moment, I'm always amazed how real world signalling can be both complicated (to make sure it is safe) and simple (like using Annett's keys to unlock everything). Actually, an Annett's key would be a neat solution to the quarry line Richard

Too uncertain. The quarry train driver just misunderstood the green flag and ran out in front of the non-stopping up passenger train. He's been arrested for manslaughter There really should have be a starting signal to control exit from the quarry Richard

How would a train from the quarry know it was safe to proceed? Richard

I've just finished making some vans based on the Campbeltown & Machrihanish brake vans: There's a drawing in Don Boreham's 'Narrow Gauge Railway Modelling' book The grey vans are based on the drawing, the black vans are a shortened version They're made from 0.010" styrene sheet: with Peco wagon chassis: Richard

I didn't know about that project. From their website: So, could be identical! http://www.cramptonlocomotivetrust.org.uk/ Richard

Halfords grey primer, and ask critics to prove you wrong then Richard