Edward Thompson: Wartime C.M.E. Discussion

I must confess I have trouble believing weight transfer is that big a deal with Pacifics. 3 ton drawbar load, ~22 tons on each set of wheels, and a very big mechanical disadvantage. And if weight is going to come of anything surely it will be the front bogie. Unfortunately my maths is inadequate to do the sums.

 

Preach on. (if I were anywhere else I would be out with the gifs)

 

Just want to reach out to everyone. I have been making lots of graphs and studying my stats. I know what I want to compare in terms of mileages and availability. Are there any pressing locomotive comparisons you'd like to see? It might make it into the book if it's an interesting enough comparison.

Just as an example: I have collated K1/1, K2, K3, K4 and K5 locomotives together to provide some comparisons.

 

Raven,Gresley and Thompson B16/1/2/3 please

 

I think I've said this before, but sometimes it is difficult to do comparisons within a class, as the major design changes are not noted within the body of the data sets. So glancing at my tables - I can give you B16 which covers parts /1, /2, and /3 and that's the best I can do.

Comparisons between classes are possible - e.g. B1 to B12, B16 and B17.

 

That will be very interesting .
If LMS, SR and GWR fans can supply corresponding numbers for Class fives,Halls and King Arthurs we can debate ten years more.
Pacifics were CME playthings and 4-6-0 did the work.

 

Utter nonsense.

 

Just for you Hermod. One Sunday afternoon's work. For the record - I put the Thompson B2 in to provide a comparison to the B17s. Bearing in mind the limits of the current dataset being 1942-46, this shows the new B2s coming into service.





B1 is Thompson, B7 is Robinson in origin, B12 is Holden built, Gresley/Thompson rebuilt, B16 is Raven (cannot differentiate between Raven, Gresley and Thompson locos), B17 is Gresley and B2 is Thompson's rebuild of a few B17s (data has 2 in first year, 6 in second year).

 

Thank You.The Thomson B1 seems to have been a hit and B16 not bad either.

 

Not doubting the quality of the B1's but the data to me says the brand new B1's performed well relative to older classes which would have many locos requiring general repair etc?

I might be looking at this wrong but how did Springbok achieve 40000 miles in 1942 when my understanding was it only entered service in December?

Jon

 

Did it have a testing regime before entering service?

 

Did the LNER produce figures for a given calender year, or a 'financial year' ?

 

Even if the financial year ran to June '43 , 40000 miles from December would be some achievement.

My understanding was that the loco was completed in December' 42?


Jon

 

All well and good comparing mileages of different classes but not all of these classes would have been doing the same work. Some would have been allocated to sheds with lower level of work. Would a Yarmouth South Town B17's diagram give the same daily mileage as a Top Shed B1 for example?

 

From my viewpoint, the more statistics and graphs that you are able to present in your book, the better! In reality, your publisher may limit the space allowed for such material, so you will have to focus on statistics most relevant to the main themes of the text in your book.

The 2-6-0 and 4-6-0 statistics likely influenced Thompson's thinking on his designs for medium-power locomotives. The 2-cylinder K2 can be seen as the template from which the B1/K1/L1 evolve, noting that the K2 was a Gresley GN design.

 

Completely agree: that’s why something similar is mentioned in my “limitations” section when talking about the data.

 

A good question. Calendar year. Stats above are reflective of work done in a calendar year.

 

Absolute rubbish Ralph: as evidenced directly above you.

Do you actually have anything constructive to add to the thread?

Are you that intimidated by the material being put together that you feel the need to keep trying to undermine it every time?

Seriously? What is the problem here?

 

You mean like long tedious tables of runs from point a to point b?

That's why you put them in an appendix so they don't clog up the text.

It is patronising to think that railway enthusiasts can't embrace statistical analysis or aren't open minded enough to move beyond coffee table books and 1950s boys' own pastiche.