Hornby 2021 - P2 new tooling

[Pre Grouping fan]

I can sort of see why Hornby recommend using the opened chimney as it seems to force the steam up one opening.

 

I haven't got one but I wonder what would happen to the steam if you cut the "web" in the bottom half of the double chimney back leaving it open below but still looking like a double chimney from the top. Wonder if it would help direct the blast up both openings?

[34theletterbetweenB&D]

On 10/04/2024 at 12:32, rogerzilla said:

So you need flangeless wheels (wrong) or a swivelling pony truck (also wrong).

There is proven superior technique in HO for those that must use set track. The wheels are flanged and run in an inside frame truck. The exterior frame re[presentation is a thin piece, hinged and moves out to accomodate the wheelset movement on the inside of the curve by contact with a projection on the truck frame, returning to correct position on straight track by spring action.

 

Also 'wrong' but the best possible compromise I have yet seen.

[Cor-onGRT4]

14 hours ago, E100 said:

 

Steam and the proper chimney fitted!

Strange Hornby is recommending the single chimney, while in this video with the double chimney it looks clearly there are two steam colums and more blast from the chimney maybe because the steam is under more pressure because the exhaust is smaller with the two holes.

And no problems it looks like it.

On Hornby YouTube channel about the P2, there is a text saying to use the single chimney for better resulsts, but the oposite looks better resulting.

[LMSfan72]

Well, isn't that interesting. When I get mine back (I couldn't get it to steam at all) I may have a go at printing different chimneys to see what happens! I can understand the standard double chimney wouldn't be optimised for "steam" and it's easy to do a single hole, but, it might be possible to tune it for different running styles 😁

[Bryn_Bach_Railway]

4 hours ago, Cor-onGRT4 said:

Strange Hornby is recommending the single chimney, while in this video with the double chimney it looks clearly there are two steam colums and more blast from the chimney maybe because the steam is under more pressure because the exhaust is smaller with the two holes.

And no problems it looks like it.

On Hornby YouTube channel about the P2, there is a text saying to use the single chimney for better resulsts, but the oposite looks better resulting.

short term the double chimney probably does look better, but I’d imagine it would allow a fair bit more water condensation on the inside of the chimney over time and thus run the risk of water dropping on top of the generator. The single chimney already results in a small amount of condensation on the inside walls.

 

There is a mention in the operating instructions that of you somehow get water on top of the generator, to clean it off as it could lead to damage. And if your running the double chimney chances are your not going to notice if water does end up on top on the generator and as such the generator might become damaged. 

The amount of steam being generated could well just be the reservoir being almost too full, as I have noticed the more water inside results in the more ‘steam’ out the chimney

[smr248]

On 08/04/2024 at 19:38, cctransuk said:

 

Thank you for this; a very useful assessment.

 

I don't want to spoil anyone's enjoyment of this new development, so what follows is definitely my PERSONAL view.

 

Steam is a state of existence of water - its behaviour in our atmosphere is controlled by many factors - NONE OF WHICH CAN BE SCALED!

 

Whilst Hornby are to be congratulated for what they have achieved, I would stick my neck out and say that miniature steam generators will NEVER be able produce an effect that mimics the behaviour of smoke and steam when emitted by a steam locomotive.

 

The laws of science simply dictate that what comes out of the P2 funnel resembles what comes out of the spout of a kettle, as opposed to a steam loco.

 

For instance, a steam locomotive, standing at rest in a siding, emits lazy curls of, mostly, smoke - not the abrupt on / off spurt of steam, which is evident in the first layout shots in the video.

 

I could go on, ad infinitum, but it all comes down to the physical behaviour of tiny quantities of water vapour as opposed to large volumes of smoke and steam.

 

CJI.

I assume that this is atomised water rather than actual steam?  Does anyone know how the " steam" generator actually works, ie what principal it uses to generate "steam"

[34theletterbetweenB&D]

On 28/04/2024 at 15:03, smr248 said:

Does anyone know how the " steam" generator actually works

I am pretty certain that this will be achieved with an ultrasonic nebuliser, widely applied to make mist and fog effects for a range of purposes.

[smr248]

On 01/05/2024 at 19:33, 34theletterbetweenB&D said:

I am pretty certain that this will be achieved with an ultrasonic nebuliser, widely applied to make mist and fog effects for a range of purposes.

Thanks, that would be my assumption too, although I'd call it a " humidifier".

Assuming that is the case, I wonder what steps Hornby advise to reduce the risk of users contracting Legionnaires disease?

[34theletterbetweenB&D]

2 hours ago, smr248 said:

I wonder what steps Hornby advise to reduce the risk of users contracting Legionnaires disease?

If the user advice is to solely use cold potable water directly obtained from mains supply - drinking water in short - I think they are covered.

 

It is water that is heated and then left static  below 50C that promotes potential growth of the bacterium. Amazingly,  given the prevalance of showers and doubtless a great many flaky hot water systems in private accomodation, we don't have an epidemic: so the risk must be miniscule.

[smr248]

No doubt the risk is small.  It's still a risk though.  I just hope that Hornby have covered themselves.

[GraemeWatson]

Esteemed RMWebbers,

 

Having followed the filling and chimney instructions, I'm not having much joy with my steam generator Prince of Wales P2.

 

I understand, essentially, it's a case of Function 1 for sound, and then it should produce atomised steam effect fairly soon? I've run mine for 30 minutes in either direction on a rolling road, and I've not had so much of a peep of steam.

The sound works though.

 

I've never flooded it, I've emptied and refilled a few times and re-tried, but nothing.

 

Am I missing something?

 

Many thanks

[cctransuk]

1 minute ago, GraemeWatson said:

Esteemed RMWebbers,

 

Having followed the filling and chimney instructions, I'm not having much joy with my steam generator Prince of Wales P2.

 

I understand, essentially, it's a case of Function 1 for sound, and then it should produce atomised steam effect fairly soon? I've run mine for 30 minutes in either direction on a rolling road, and I've not had so much of a peep of steam.

The sound works though.

 

I've never flooded it, I've emptied and refilled a few times and re-tried, but nothing.

 

Am I missing something?

 

Many thanks

 

Sounds like a sender-backer to me!

 

CJI.

[2750Papyrus]

I understand that the sound and "puff" are triggered mechanically from an axle.  Has any body achieved basic operation of these features when operating on DC?

[GraemeWatson]

1 hour ago, cctransuk said:

 

Sounds like a sender-backer to me!

 

CJI.

Well, videos I had watched said that it could take 5 minutes of running in to start the effect, mine had been going for at least 30 minutes stretches on an initial 5ml.

 

Turns out the Hornby website in an article about the model says that if there's nothing, to try 10ml.

 

Given the instructions said 5ml max, I was somewhat reluctant. I added another 5ml, and hey presto, it belched into life.

 

I'm no stranger to the sender-backer, and I was concerned this was going to be another expensive try out, but seemingly not. Hopefully my experience and account will help another.

[LMSfan72]

That’s what mine did and I ended up sending back. However, when it was returned there was a note saying the wrong sound profile had been installed! So, you might try reloading the profile.

 

Also, I read somewhere that you may need to overfill it to start with - more than the 5ml

[GraemeWatson]

Further to my previous message and update that I got the Prince of Wales to steam up (10ml of water, as per Hornby FAQ), here's a photo and video of this running on thr hime layout.