LNER N9 / N10 3D Printed shell

[Paul_sterling]

Hi Folks,

As mentioned on the J21 thread https://www.lner.info/forums/viewtopic.php?f=3&t=14038 I'm working on an N9 as well, though this could be deviated to an N10, depending on chassis choice.

This all began with the purchase of a ready built N9 nu-cast, which I think I can do a better job of with printing. The Wainwright C-class is another suitable donor, for the N9, whereas I'm considering the Jinty for an N10.

The N9 is, by and large, the same as the J21 up the the front of the cab. Some features move a little, but changing the position of the CAD planes brings this in line.

20210526-1 by Paul Sterling, on Flickr

This shows the initial modifications of a J21 CAD file.











I plan on producing a similar rear truck arrangement to the 56XX, but I'm undecided about whether to include a rotating cylinder, or just utilise sideway play, as I was advised within the LH&JC No.5 thread that the cylinder could be glued solid if it begins to cause trouble due to wear.

Unlike the J21, I'm not going to produce a number of variants, the Westinghouse pump, vac pipe, side feed, and lubricator can all be cut off if people don't want that particular variant.

Thanks, Paul.

[NZRedBaron]

I swear, you're gonna murderise my wallet at this rate; and I mean that in the nicest possible way.

[mick b]

What chasssis for this one ?

[Paul_sterling]

Hi Mick,

If I go through with the N9, it'll be a bachmann c-class again, if I change to N10, I think i'll be using a Bachmann Jinty.

Thanks, Paul.

[Paul_sterling]

I swear, you're gonna murderise my wallet at this rate; and I mean that in the nicest possible way.

Haha!

Thankfully, tank engines only take up one space on the printer, and use less resin in total, so aren't as expensive as tender locos.

Actually jokes aside, if you want me to hold off on your order for a J21, until this is a definite goer (or not), it'll save a fortune on postage sending them together.

Paul.

[mick b]

Hi Mick,

If I go through with the N9, it'll be a bachmann c-class again, if I change to N10, I think i'll be using a Bachmann Jinty.

Thanks, Paul.

Have you a photo of the C class chassis ?

thanks

[Paul_sterling]

https://bawdsey.wordpress.com/2015/03/2 ... 15-review/

I found this online Mick. C class to J15 comparison.

Thanks, Paul.

[mick b]

Good read, thanks.

[Paul_sterling]

No worries.

I did use this as an initial reference as to what the chassis looked like, and I had a J15 to start with, but as you'll have seen on the J21 thread, it wasn't ideal for a J21 donor, not so much for the wheelbase, which isn't all that far out, but more the underside of the boiler being visually obtrusive.

[Paul_sterling]

I'm away on business this week, but as it would happen, five minutes before I was due to leave, a package arrived in the post from Danby_wiske, which contained a certain LMS Jinty, that was swiftly added to my luggage, and I've spent some time of the last few days going over its chassis with the very nears, drawing up the line diagram ready to translate onto CAD when I get back, it does look at present that the N10 is a goer, but I've done all of the work required to make the N9, so it can remain as an option should anyone want a big wheel rather than a little wheel.

Paul

[Hatfield Shed]

... I had a J15 to start with, but as you'll have seen on the J21 thread, it wasn't ideal for a J21 donor, not so much for the wheelbase, which isn't all that far out, but more the underside of the boiler being visually obtrusive.

Just a thought, on the basis of Hornby's J15 and J36 mechanisms which are very much the right thing for performance, what of their Drummond 700? It has a 5'1" wheel, but I don't know the wheelbase dimensions or what height the motor is pitched other than clearly higher than the J15; reports of performance at time of release as the two LNER group 0-6-0s.

[NZRedBaron]

So, just to clear the air, what exactly were the duties that you'd see the N9's and N10's working on? As far as I can tell they were designed as shunting engines and local goods traffic?

[Atlantic 3279]

What air is there to clear? A summary of the work done by these classes of loco is already given in the "Locomotives" section of the website that hosts this very forum, one need only look. No need to re-state it all here, surely?
More detailed accounts of the uses to which these locos were put appear in various books, such as the RCTS "Locomotives of the LNER" series.

[Paul_sterling]

... I had a J15 to start with, but as you'll have seen on the J21 thread, it wasn't ideal for a J21 donor, not so much for the wheelbase, which isn't all that far out, but more the underside of the boiler being visually obtrusive.

Just a thought, on the basis of Hornby's J15 and J36 mechanisms which are very much the right thing for performance, what of their Drummond 700? It has a 5'1" wheel, but I don't know the wheelbase dimensions or what height the motor is pitched other than clearly higher than the J15; reports of performance at time of release as the two LNER group 0-6-0s.

Hi Hatfield,

Not overly sure to be honest, I don't know if the 700 had any relationship to the C class to perpetuate a similarity in wheelbase etc.

I've just found this pic on a google search,
https://www.pinterest.co.uk/pin/386676317985216191/

At a guess, considering the J21 8'+8'6" wheelbase, I'd reckon the Drummond is (at least) longer than that at the rear.

Shame really, as I'd guess the motor positioning would be helpful for some of the LNER 0-6-0's.

Paul.

[Paul_sterling]

So, just to clear the air, what exactly were the duties that you'd see the N9's and N10's working on? As far as I can tell they were designed as shunting engines and local goods traffic?

As Graeme mentioned, there is some info on this forum in regards to their use,
https://www.lner.info/locos/N/n10.php

It would appear passenger use came late in their careers (circa 1940's), which ironically came at the same time as the removal of continuous braking from Locomotives of the class, so I would guess, that passenger usage would only be appropriate from that point onwards, and of diminishing occurrence.

N9's despite bigger wheels, don't mention passenger use at all.

Paul.