Detailing the Dublo Cowans Sheldon 45t crane

[jonhall]

Its not quite ready for production quite yet, due to a number of issues with the way they were etched, and a bit of a maths error when working out how many of which size pulley would be needed, but this is my next project.

 

 

 

still pondering how best to do the gears.

 

Jon

 

 

[Gordon A]

These days I suggest 3D printed, then if you want more than one set, cast them.

 

Gordon A

[cctransuk]

Its not quite ready for production quite yet, due to a number of issues with the way they were etched, and a bit of a maths error when working out how many of which size pulley would be needed, but this is my next project.

 

IMG_20180715_161513.jpg

 

IMG_20180715_161201.jpg

 

still pondering how best to do the gears.

 

Jon

 

If these etches are to be available for sale - may I express an interest in purchasing?

 

A couple of suggestions :-

 

a] any thoughts of producing a scale length jib for the HD Cowans Sheldon steam breakdown crane;

 

b] any thoughts of producing a scale length jib for the Airfix / Dapol Booth Rodley diesel PW crane?

 

Both of these models have carriages and / or crane bodies (crabs) that are / can easily be adapted to scale; it's the under-scale length jibs that spoil the proportions of the models.

 

I would have thought that, in the hands of a proficient digital designer, the jibs would be a natural for 3D printing.

 

Regards,

John Isherwood.

[jonhall]

These days I suggest 3D printed, then if you want more than one set, cast them.

 

Gordon 

 

Yes that was broadly the plan, although laser cutting then casting might also be an option. There were some extra bits for 'your' 36t R&R on the edge of the sheet as well!

 

If these etches are to be available for sale - may I express an interest in purchasing?

 

A couple of suggestions :-

 

a] any thoughts of producing a scale length jib for the HD Cowans Sheldon steam breakdown crane;

 

b] any thoughts of producing a scale length jib for the Airfix / Dapol Booth Rodley diesel PW crane?

 

Both of these models have carriages and / or crane bodies (crabs) that are / can easily be adapted to scale; it's the under-scale length jibs that spoil the proportions of the models.

 

I would have thought that, in the hands of a proficient digital designer, the jibs would be a natural for 3D printing.

 

Regards,

John Isherwood.

John,

 

Intent is to sell to cover the cost of the setup - there will be a short pause whilst I work out what I'm re-working on the etch, Two longer jibs would be nice, but are way beyond my 3d CAD or my etch design skills, this is just a simple dress up kit.

 

Jon

[RBAGE]

Gordon 

 

Yes that was broadly the plan, although laser cutting then casting might also be an option. There were some extra bits for 'your' 36t R&R on the edge of the sheet as well!

 

John,

 

Intent is to sell to cover the cost of the setup - there will be a short pause whilst I work out what I'm re-working on the etch, Two longer jibs would be nice, but are way beyond my 3d CAD or my etch design skills, this is just a simple dress up kit.

 

Jon

I would like to express my interest.

[Ben Alder]

Sounds like an interesting project - I'll add my interest to it as well. Must dig around to find my Dublo crane - haven't seen it for years....

[teaky]

Me too please.

[Londontram]

I keep hearing people say the jib is shorter than it should be on the Dublo Crain how much is it actually short by?

Edited July 16, 2018 by Londontram

[Wild Boar Fell]

Very nice indeed! I might have a few of the Ransome jibs left if that may be of any use? Ditto the jib runner/match wagon.

[Ben Alder]

If available, then yes please.

[SteveyDee68]

Wow. Just come across and as I have an eBay purchase of the later but essentially the same Hornby version sans stabiliser legs and chimney, I too would be interested (having neither the desire or the abundance of cash to splash out on the forthcoming miracle of model making that is the new Bachman RTR version!)

 

Steve S

[Ian G]

Jon

 

I would be interested in a detail set as have one in bits at home.

 

Ian G

[jonhall]

A slight update, 

 

I redrew the sheet at the weekend, to tweek the numbers of the various pulleys, and then had to lay it out slightly differently to get them onto an A4 sheet in an efficient manner, however i need to do a bit more design work for the bit that fills the sheet, and my life has got a bit full of other commitments for a few weeks, so there is unlikely to be progress before mid August.

 

Jon

[Wild Boar Fell]

If available, then yes please.

 

Wasn't sure if this is to myself or Jon, so apologies if wrong.

I've checked and I have some spares of the jib, please drop me a PM if you are interested.

 

Wild Boar Fell

[Sandhole]

Gordon 

 

Yes that was broadly the plan, although laser cutting then casting might also be an option. There were some extra bits for 'your' 36t R&R on the edge of the sheet as well!

 

John,

 

Intent is to sell to cover the cost of the setup - there will be a short pause whilst I work out what I'm re-working on the etch, Two longer jibs would be nice, but are way beyond my 3d CAD or my etch design skills, this is just a simple dress up kit.

 

Jon

Like many others ,I have a Hornby crane.

I;ll follow this and am expressing my interest in a set when you have finalised the details.

                                                   Chris.

[Colin_McLeod]

A very interesting detail kit and nice work. I am expressing my interest in a kit when they are ready.

[craneman]

It is probably worth reiterating for the avoidance of confusion that the Hornby Dublo crane (which is the subject of this thread) and the Hornby (ex-Triang Hornby) crane are entirely different.

 

The Hornby Dublo crane is a passable representation of a Cowans Sheldon 45-ton steam crane of the '40s, and indeed was an outstanding model for its time.

 

The Triang Hornby is a poor representation of a Cowans Sheldon 75-ton crane of the '60s and is little more than a toy.

[Ben Alder]

There is a guy on a Facebook page offering conversions of the Triang crane. I can post a link if anyone is interested in that crane upgrade.

[jonhall]

There is a guy on a Facebook page offering conversions of the Triang crane. I can post a link if anyone is interested in that crane upgrade.

A wasn't aware of anyone else doing a conversion kit? so yes please.

 

Jon

[Ben Alder]

Here is a link to his facebook page. He seems to be doing them as ready built - not too sure.

 

https://www.facebook.com/railcranemodelling/

[SteveyDee68]

It is probably worth reiterating for the avoidance of confusion that the Hornby Dublo crane (which is the subject of this thread) and the Hornby (ex-Triang Hornby) crane are entirely different.

 

The Hornby Dublo crane is a passable representation of a Cowans Sheldon 45-ton steam crane of the '40s, and indeed was an outstanding model for its time.

 

The Triang Hornby is a poor representation of a Cowans Sheldon 75-ton crane of the '60s and is little more than a toy.

Rats! Didn't know that ... now realise my eBay bargain wasn't!

[craneman]

I was rather afraid that perhaps you hadn't realised, which was the main reason for my reminder. Sorry to be the bearer of bad news.

 

The HD crane turns up quite regularly on eBay and (unless mint) usually doesn't fetch ludicrous prices. Certainly a tatty one, ideal for superdetailing and painting, needed cost much. The propping jacks however do seem to fetch silly money, but as these bear no resemblance whatsoever to the prototype this doesn't really matter.

[GWRMember]

I'd be interested in a couple of these to upgrade my own HD cranes - both ebay purchases with a view to enhancing them.

So glad someone is thinking along parallel lines - means I can wait for these to become available and get on with some other modelling.

 

Ken

[Gibbo675]

I keep hearing people say the jib is shorter than it should be on the Dublo Crain how much is it actually short by?

Hi There,

 

After measuring the drawing in Peter Tatlow's book Railway Breakdown Cranes Volume Two at 158mm the jib on the Cowans Sheldon LNER 45T crane should be 39' 6" from the jib foot to the main hoist pulleys on centres. I do not have a Hornby Dublo crane and so don't know how long its jib is to be found.

The above mentioned book is published in two volumes and is a quite brilliant asset for anyone interested in crane building with lots of drawings and all sorts of photos. Some of the drawings in the book are slightly off scale but may be compensated for by using wheel base figures and working in a conversion factor, although I did check the particular drawing mentioned and it is correct to scale.

 

Here are some of my crane projects built from the drawings in the book;

Cowans Sheldon 75 ton in both N an OO gauges showing jib foot articulation.

 

Same again shewing Stokes bogies and jibs removed also lifting beams.

 

Comparison with original Hornby and modified crane with new jib and other alterations.

 

Busy work bench with Cowans Sheldon LMS and BR Std 30 ton cranes part built.

 

Gibbo.

Edited August 1, 2018 by Gibbo675

[Poor Old Bruce]

After measuring the drawing in Peter Tatlow's book Railway Breakdown Cranes Volume Two at 158mm the jib on the Cowans Sheldon LNER 45T crane should be 39' 6". I do not have a Hornby Dublo crane and so don't know how long its jib is to be found.

The above mentioned book is published in two volumes and is a quite brilliant asset for anyone interested in crane building with lots of drawings and all sorts of photos. Some of the drawings in the book are slightly off scale but may be compensated for by using wheel base figures and working in a conversion factor, although I did check the particular drawing mentioned and it is correct to scale.

 

Be careful with the drawing in Tatlow. Be aware that some, e.g. the above said 45T Cowans Sheldon crane, have been distorted in printing such that the vertical and horizontal scales are different i.e. the wheels etc. which should be round aren't!