Mattmay05 February 2015 competition thread.

Have any questions or tips and advice on how to build those bits that don't come ready made.
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mattmay05
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Mattmay05 February 2015 competition thread.

Postby mattmay05 » Fri Jan 23, 2015 11:40 am

February Forum competition 2015

For this competition I intend in using most skills I have used on this forum to date, so this may or may not work, but It’s been in development for nearly a year… so fingers crossed.
I had a choice of a few projects from plastic kits, Vans, wagons, to a brass coach kit which won’t be finished till at least March time due to paints ect…
Looking at everyone elses projects / entries I thought of opening up an old project something I have not worked on since January last year, which will use a bit of everything I have done, from 3D printing to scratch building, and some kit boding…

When doing some research in to most things Southern, and Bulleid locos I came across a design that was never made, or was changed to meet the Southern’s requests.

Image

This was the original design from Bulleid for the Merchant Navy class loco, With Bulleid working under Gresley I think you can probably see what his design was based on? Bulleid's first suggestion was for an eight-coupled locomotive with a 4-8-2 wheel arrangement for the heavily loaded Golden Arrow and Night Ferry Continental express trains, although this was quickly modified to a 2-8-2 equipped with a Helmholtz "Bissel bogie" – a system already successfully applied on the Continent. However, both proposals for eight-coupled locomotives were resisted by the Southern Railway's Chief Civil Engineer, so a new 4-6-2 Pacific design was settled upon instead.
For this little competition, with a few small changes, I have decided to build the second design 4-8-2 design of the Merchant Navy.

Specs:
- 3D print Chassis block: Using parts from a spare Hornby chassis, with the same wheel spacing.
- Body: Using a spare Merchant Hornby Tender with scratch built parts, and Dapol’s kit for the main loco body modifications needed.

I have a finished design for the chassis which was generally finished from January 2014, and never got round to test printing it or testing it, so might as well dust it off and give it a go.

In the next edition of how not to build a Bulleid loco, I will go through the design of the chassis and the changes that were made from the original drawing.
Last edited by mattmay05 on Thu Apr 23, 2015 8:23 pm, edited 4 times in total.

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Re: Mattmay05 February 2015 competition thread.

Postby flying scotsman123 » Fri Jan 23, 2015 8:35 pm

Can't wait Matt, will it be a loco kit for the bluebell by any chance? :D
"listen carefully, i shall say this only once"

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Fri Jan 23, 2015 10:48 pm

Not a Bluebell loco :) I have them all so yea nothing left to build there. Just coaches... one im half way through building anyway and writing so still looking at what others are doing, to so something completely different.

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Re: Mattmay05 February 2015 competition thread.

Postby Dad-1 » Fri Jan 30, 2015 2:13 pm

Friday today Matt,

What's it going to be ? Whatever I know it'll be interesting.

Geoff T.
Remember ... I know nothing about railways.
viewtopic.php?f=22&t=32187 and Another on viewtopic.php?f=22&t=28436&start=60&st=0&sk=t&sd=a

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Fri Jan 30, 2015 3:48 pm

I will hopefully post it up very early morning 1am possibly, I am just putting it all together and getting a few prices for certain bits and pieces, it will either be great or a giant flop... either way it will be interesting.

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Sat Jan 31, 2015 12:40 pm

Info now released :)

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skyblue
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Re: Mattmay05 February 2015 competition thread.

Postby skyblue » Sat Jan 31, 2015 12:48 pm

Wow - that looks very impressive! Good luck and I look forward to seeing the completed model.

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Re: Mattmay05 February 2015 competition thread.

Postby Dad-1 » Sat Jan 31, 2015 1:38 pm

The sheer range of 'projects' is beyond belief !!
Imagination rules !!

Geoff T.
Remember ... I know nothing about railways.
viewtopic.php?f=22&t=32187 and Another on viewtopic.php?f=22&t=28436&start=60&st=0&sk=t&sd=a

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Sat Jan 31, 2015 2:41 pm

Yes well I wanted to do something different as I didn't want to do the same as someone else, if we all did model rail projects, coaches, stand alone kits ect then would be a bit boring so I wanted to wait to see what everyone else does, plus I don't even know if this will work or not so should be interesting lol :lol:

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Re: Mattmay05 February 2015 competition thread.

Postby carnehan » Sat Jan 31, 2015 6:35 pm

That sounds remarkable. I know almost nothing about 3D printing but suspect you have quite a challenge ahead of you.

Good luck with it and I look forward to seeing the progress.

Paul

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Sat Jan 31, 2015 7:17 pm

I've done a fair bit :) I know it quite well, trying a new material so should be interesting, I will post an update Friday next week.

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Re: Mattmay05 February 2015 competition thread.

Postby 35011 GSN » Wed Feb 04, 2015 9:35 am

I'll be watching this with particular interest!!! Looks like a brilliant project

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Thu Feb 05, 2015 5:32 pm

3D printing – Chassis

The chassis is based on a Hornby un-rebuilt bullied chassis purchased from ebay for around £30, this was key as it gives me the motor, wheels, most of the motion, cylinders, slide bars, and all the measurements I need to start off.
As mentioned the idea to build this was taken in December 2013, the first chassis being completed in January 2014 which is where it stayed till now. I reopened the file in early Jan to understand what is needed, and what is still to be finished; it wasn’t far off being complete.
The chassis has been drawn using Google sketch up, and checked over for errors with Netfabb.

Image
Image


Changes:

The first 2 adjustments were wheel spacing, the gearbox also needed some work in terms of where the locations were for the 2 gear shafts, I also changed the location of the one of the two sprung axles, having a larger wheel base, I moved the front axle to which was designed to be sprung and moved it to the rear, so both rear axles would be sprung.

Image
Image

A test print has been ordered, so I can understand if anything else needs adjusting, as it has been designed with the idea of it working, or at least the hope of it working.

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Re: Mattmay05 February 2015 competition thread.

Postby Dad-1 » Fri Feb 06, 2015 11:47 am

This is science fiction to me .......
I'm still at the Napoliean prisoners of war stage - carving with a sharp object.
(even they did better than I can do)

Geoff T.
Remember ... I know nothing about railways.
viewtopic.php?f=22&t=32187 and Another on viewtopic.php?f=22&t=28436&start=60&st=0&sk=t&sd=a

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Re: Mattmay05 February 2015 competition thread.

Postby mattmay05 » Fri Feb 06, 2015 5:47 pm

There will be certainly some of that a bit later on, :)
Sadly got several other things to do before I even get to the sharp end of the project.. more like several other kits, articles to right first, couldn't of happened at a worst time.


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