Julia's Workbench.

-missy-

-missy-

Western Thunderer
J

J_F_S

Western Thunderer
-missy- said:
You are probably right.
Click to expand...

Clearly not on the weight!! You'd never think ah wer once an ingineer! Although that example by Musgraves is a bit exceptional at 200 odd psi with double rivetted seams etc, it is a lot closer than my guess!

The print looks great BTW and so much better than the average on too many layouts.
 
WM183

WM183

Western Thunderer
-missy- said:
Oh, and I forgot, the printer is a Elegoo Saturn 4 Ultra 16k


I pretty much use nothing but the ABS Like resin in Grey.

uk.elegoo.com

Elegoo 8K ABS-like Resin 3.0 | Premium 3D Printer Resin

Create stunning, durable models with Elegoo 8K ABS-like Resin 3.0 - high toughness & impact resistance ensure your prints endure stress and shocks effortlessly.
uk.elegoo.com uk.elegoo.com

Julia :)
Click to expand...
Thank you Julia!
 
-missy-

-missy-

Western Thunderer
Hello.

Time for an update. This is another one of my random long term projects which I occasionally chip away at.

Some might know already (apologies). But in a previous life I was responsible for the companies laser scanner. As part of a training exercise, I arranged for a day at Didcot Railway Center to scan a few things. One of those items which ended up being on the receiving end of the scanner was 18000 Kerosene Castle.

1776013315545.png

Conveniently, I managed to recreate a model from the scans in the hope that oneday, I could print it to make something special. Since then, I have managed to create a 3D model of most of the engine and have been tweaking the design into a workable model.
A while ago, I made a start with the chassis as this would be the most complicated and its proving to be just that. I found that a Class 37 engine from Graham Farish gave me close to the correct wheelbase but obviously, it did not give the right bogies. This is where I have been focused.

1776013525425.png

1776013577585.png

So, after many, many, iterations. This weekend I have finally manage to get the bogies to work and fit the Farish chassis to my liking. My plan is to used 2mm Association spoked wheels to give that authentic look to the engine (once they have them in stock). If not, than it looks like I will be making more wheels myself. The gearing is all worked out too and just needs making.
It probably doesn't look like much, but this is a bit of a milestone for this model. Its taken quite a bit of thinking, design, redesign, then redesign again, to get it this far.

Julia :)
 
-missy-

-missy-

Western Thunderer
As a side note, this picture shows why I have felt really confident in my ability to print things out now...

1776014045315.png

This is the inner bogie bit for Kerosene Castle. One the left is one of the previous versions printed on my old 3D printer, on the right is a newer version from this weekend printed on my new printer.

That's why I am enjoying printing currently!

Julia :)
 
-missy-

-missy-

Western Thunderer
Hello.

So I have managed to get a little bit more done on the chassis for 18000. Not all of it went according to plan though.

According to the CAD, the donor chassis form a Farish Class 37 needed to be narrowed slightly to fit the new body. After checking it out dimensionally, I worked out I had to remove 0.4mm from each side. So, over to the manual milling machine to what I thought would be a quick skim on each side to bring it to size.
Of course, it didn't quite happen as planned and after a bit of machining, it performed a RUD on me.

1776602026950.png

What I discovered was my method of holding the chassis was far from ideal. I also discovered that the 2 chassis halves are only held together by a single self tapping screw. Not what I was expecting. The other plastic inserts act purely as locating points. This of course, meant I had to rethink how I hold the chassis.

Step in the 3D printer, and after a short bit of design work I printed off a couple of jigs to hold each chassis half securely enough to skim the outside faces. These were clamped to the milling machine table one the 2 screws were tightened to clamp the chassis in place.

1776602610599.png

They both performed really well and both halves were skimmed to dimension without any further issues. I also noticed as a result, that each half of the diecast chassis wasn't totally flat being slightly thicker towards the middle.

1776602679957.png

Once machined. I gave the chassis a quick coat of Black primer to tidy them up a bit and this is the current state of play with the chassis.

1776602919634.png

1776603029048.png

So, next on the list is to sort the motor out. I have some on order from TRAMFABRIEK. I then need to reverse engineer the driveshafts as they were not supplied with the chassis plus a motor mount for the non-standard motor. That's another job for the 3D printer. While I have the printer out I might as well remake the chassis spacer for the screw that vanished during the RUD.

Julia )
 
B

Bob Essex

Western Thunderer
Julia,

There should be two plastic clips at ether end on top which hold the chassis halves together, I can't find a shot showing them at present but you can probably see where they go. I daresay with your skills you could print some replacements. they are like a double inverted U shape with the centre leg being another spacer and the outers Z clip shape if you get my meaning.

Bob
 
-missy-

-missy-

Western Thunderer
Thank you Bob, that is really useful to know. I did think that the chassis halves were a bit light on support.

Julia :)
 
B

Bob Essex

Western Thunderer
Ah, just discovered they are listed under spares for the class 37 on the Bachmann spares site Julia. I would assume it‘s a moulding common to all the similar chassis designs. On the second page along with photo. £1.00 each. Code F7117-250-01 It’s the p&p that’s off putting for small orders. Hobsons choice I guess.

Bob
 
-missy-

-missy-

Western Thunderer
Thanks again Bob.

Andy H put me onto the Bachmann spares page last night. I went through it this morning and put an order in for a few bits and pieces, some so I can chop them around a bit and have a play. Yes, the postage is a flat rate charge. Not great if you are putting in a small order as you say.

Julia.
 
LarryG

LarryG

Western Thunderer
It s hard to believe the GWR wagons are 2mm scale, such is the sharpness of detail and lettering.

Re boiler makers in Hyde, namely Daniel Adamsons, Grandad Goddard worked there almost all his life being responsible for measuring out the boilers metal in the flat so that it rolled exactly to measurement. He was loaned out to Beyer-Peacock when they were experimenting with welded fireboxes. For a spell in the early 1950's, dad worked at Adamson's as a welder (I accompanied him every Saturday morning). Uncle Harry was in the drawing office and Uncle Jack was labouring. I saw their boilers moving through Oldham's streets, but never on railway wagons.

In 'Goods Cartage : 2', it seems large boilers were carried on two end wagons of the four-wagon Pollen E 6-wheel set to Wagon diagram A6, each wagon of which could carry 30 tons.
 
You must log in or register to reply here.
What's New?
Top