The DVLR Mark 2

Big Jim · Post by **Big Jim** » Sun May 10, 2015 3:14 pm

Oh dear, never mind.

Pepper dust (garden animal deterrent) might help as well. It doesn't half niff though!

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Tue Jun 30, 2015 6:19 pm

An update in video form!

https://www.youtube.com/watch?v=SHPADNs ... ramjf5ry04

KNO3 · Post by **KNO3** » Tue Jun 30, 2015 7:59 pm

Enjoyable video! Looks like you are set on a significant remodelling now.

Post by **ge_rik** » Wed Jul 01, 2015 12:17 am

A great overview. I do enjoy seeing a railway in its full environment. Makes me nostalgic for my roots in East Anglia.

Rik

DLRdan · Post by **DLRdan** » Wed Jul 01, 2015 12:52 am

Great video Zach. Who was that muppet that sent you that sent you the MYOB, its like he filled the pot full of fertilizer

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Wed Jul 01, 2015 1:16 am

Thank you, yes the DVation is very much on the cards now I think - its all in aid of a longer run and more use made out of the pretty quarry branch bit.

Rik - have you received any of my PMs?

Also - if DLR Dan ever offers you some of his MYOB don't accept! I think its genetically modified - you can see how far its spread on my railway! All from one tiny cutting.

Post by **ge_rik** » Wed Jul 01, 2015 8:36 am

Mr. Bond of the DVLR:111801 wrote:
Rik - have you received any of my PMs?.

Hi
Sorry, seem to have missed a few PMs recently. Either my eyesight is going or I've switched off an alert or done something technically inept.

Have just PM'd you.

Rik

rebelego · Post by **rebelego** » Wed Jul 01, 2015 3:18 pm

Nice video. I like the focus on plants.

What happened to the doormat field shown in SMT?
I have such a doormat and wonder if I should move it to the balcony.

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Wed Jul 01, 2015 4:13 pm

The doormat field is shown at 3 minutes in - the labrador kicked up a lot of soil and I have yet to brush it out of all the ridges in the door mat.

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Fri Jul 17, 2015 6:54 pm

A few mock ups for you.

The "DVation", Radius one (eeeeeeek) curves. Not too sure how to proceed here!

For the station building at Aldeburgh I am thinking along the lines of an overall roof structure, however there isn't a lot of space, what I might do is just have an over all roof and a fancy wall and a platform and no other facilities as if they started building a really posh big station and ran out of funds. Plausable?

Its a "British Outline Building" kit I picked up at Peterborough - obviously the aches will be curtailed

Your thoughts would be appreciated

bazzer42 · Post by **bazzer42** » Fri Jul 17, 2015 7:10 pm

Glad you explained that as I thought you had a Darjeeling thing going on with crossed kukris.
Seems a plausible idea as passenger numbers always declined before freight and with the advent of buses.

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Thu Jul 23, 2015 11:22 pm

The station has been progressing, although I have massively cut down the building it will be a large feature of the railway. I am really pleased with how it is turning out, just what I had in my minds eye.
A mock up of the parts as they are now:

In addition to this I have been working on a top secret project (Code name Raspberry) and have spent many hours in the workshop.

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Thu Jul 30, 2015 11:06 pm

The next in the Dithering video series.

https://www.youtube.com/watch?v=w3wVxnDls3Y

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Thu Jul 30, 2015 11:23 pm

In addition to Project Raspberry I have been working on another bonker's "Working (insert railway system here)" project. This time acetylene gas lighting. This was used on some light railway systems (Lynton and Barnstaple for example) and was safer than compressed natural gas. Calcium carbide reacts with water in a gas generator to form acetylene gas at near atmospheric pressure and calcium hydroxide. The gas is piped, as it is generated, up to the light fittings on the roof. Acetylene will burn with a very bright warm yellow colour (unless in excess oxygen, in which case as you will know it burns incredibly hot and near colourless) which is perfect for lighting applications and has been used by cavers, miners and cyclists for many years as a handy portable light system. A small generator was made up from brass which works in the same way. This pipes the gas up to the roof where, today, I made a gas pipe and some burners which fit inside glass chimneys sunk into the roof. All good fun to tinker with and should give some cracking night time photographs.
The generator - calcium carbide goes in the bottom, water in the hexagon bit above it. The water flow is regulated with the spindle with the decorative brass nob on the top.

The gas line goes along the roof to the fittings. As per the prototype there is one shared between all the three third class compartments and one for the guard - lego tubing connects the generator to the gas line.

The two gas burners, these are removable for cleaning.

An acetylene flame burning within the glass chimney. This is an experimental set up - the real things will be shorter and less wonky (or "arn ther Hurh" as they say round here...)

Post by **Andrew** » Fri Jul 31, 2015 8:16 am

Every time I read a post from you at the moment Mr Bond I have to check it's not April Fool's Day... No wonder you're at Cambridge, you're clearly a genius, the lighting and the air braking project are amazing. Somewhere up there I'm guessing the likes of Peter Jones, Colin Binnie and Gordon Diplock are peering over the edge of their cloud and looking down with great interest...

Keep up the good work - and keep us posted too!

Andrew.

IrishPeter · Post by **IrishPeter** » Fri Jul 31, 2015 5:29 pm

The air brakes were very interesting, yet did not thrill me, OTOH, the acetylene lights are really cool, and of course, they remind me of the old joke about the vicar, but there is a down side to everything. ;)

A night time shot would be lovely when you have the opportunity.

Peter in AZ

Boustrophedon · Post by **Boustrophedon** » Tue Aug 18, 2015 9:55 pm

Beware! Acetylene forms explosive acetylides with the copper in brass.

https://en.wikipedia.org/wiki/Copper(I)_acetylide

Do not attempt any soldering repairs on your generator!

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Thu Aug 20, 2015 12:14 am

Somewhere up there I'm guessing the likes of Peter Jones, Colin Binnie and Gordon Diplock are peering over the edge of their cloud and looking down with great interest...

The highest of complements I am flattered!

A night time shot would be lovely when you have the opportunity.

Having trouble balancing the two flames at the moment - its not as I suspected though, the far flame is the biggest! Bear with me a while on this one...

Acetylene forms explosive acetylides with the copper in brass.

I have a chemist friend looking into this one for me - thank you for the heads up, given the quantities involved though I don't think it should be an issue - the generator gets washed out each run as well.

I've been working on the DVation for a bit hence the stall in other projects.

The old quarry siding was unused and over grown...

So the track was lifted and the new baseboard cut to shape and put in

As soon as possible a train was run "Wrong way" out of Woodbridge station

Brick peers were made up and the track trialed - its amazing how tricky it is even to get a simple loop of track to line up right

Then, stifling a small sob I ripped up the first track I layed for the railway way back in July 2010.

The plywood was painted up in bituminous paint

and roofing felt was applied

Still a lot to do but the main loop is now more or less finished. Fences need to be added. The lift out bit will be decorated up in due course as a bridge.

GTB · Post by **GTB** » Thu Aug 20, 2015 11:39 am

Boustrophedon:112734 wrote:Beware! Acetylene forms explosive acetylides with the copper in brass.

Depends on the grade of brass used.

Using copper pipework for reticulating acetylene is an accident waiting to happen. In the days of carbide lights in railway carriages, the pipework would have been iron.

However, acetylene cylinders have brass valves and there are brass parts in acetylene regulators and oxy-acetylene torches. I've seen old carbide lamps with brass parts as well.

This is the relevant section from the BOC UK safety data sheet for acetylene.

"10.5 Incompatible Materials:

Air and oxidisers. For material compatibility see latest version of ISO-11114. Avoid contact with pure copper, mercury, silver and brass with greater than 65% copper. Do not use alloys containing more than 43% silver. For further information on safe use refer to EIGA "Code of Practice: Acetylene" IGC Doc 123."

Regards,
Graeme

Dr. Bond of the DVLR · Post by **Dr. Bond of the DVLR** » Mon Aug 31, 2015 4:37 pm

The copper bits have been substituted for brass as a safety precaution however I suspect the quantities of acetylene we are dealing with would not pose any significant risk.

Anyway. Update on the DVation in video form

https://www.youtube.com/watch?v=7Fitq8siYto

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