GWR Loco Specifications?

[captainkman]

Hello,

I'm trying to make some enginespecs using Bill Fock's spreadsheet. I'd really like help in finding as many specs as possible for the following locos please:

1. Iron Duke 4-2-2
2. Fire Fly 2-2-2
3. Hurricane 2-2-2+2-2-2
4. Thunderer 0-4-0+2-2-2

Thanks for any assistance given!

captainkman

P.S. I've found wheel diameters and cylinders, but nothing else.

 

[johnwhelan]

http://www.hmrs.org.uk/ would be one source.

Cheerio John

 

[RPearson]

I use this site a lot for basic info on steam locos characteristics - one of the largest collections that I found. It covers locos from around the world.

http://orion.math.iastate.edu/jdhsmith/homepage.html

Look in the Terminal and then Standard steam locomotives.

The Iron Duke and Fire Fly are there but I didn't see the others.

It provides all the info you need for Bill's sreadsheet except data on the locos IHP that you need to adjust Bill's hp estimate using the R factor.

Bob Pearson

 

[captainkman]

I use this site a lot for basic info on steam locos characteristics - one of the largest collections that I found. It covers locos from around the world.

http://orion.math.iastate.edu/jdhsmith/homepage.html

Look in the Terminal and then Standard steam locomotives.

The Iron Duke and Fire Fly are there but I didn't see the others.

It provides all the info you need for Bill's sreadsheet except data on the locos IHP that you need to adjust Bill's hp estimate using the R factor.

Bob Pearson

Thanks both of you. I'm using the link provided, but I really need to know which values are what, as they are in different names to the spreadsheet. Could someone please tell me which is which, as I don't want ot make a mistake.

Also, what would you do for the Fudge Factor of "R"?

 

[RPearson]

In Bill's spreadsheet:
nr of cyl - is number of cylinders - Bill assumes all cylinders are the same size so for compounds and/or other special arrangements you have to adjust the other input to get an equivalent simple expansion engine. Sorry that's a topic for later.

Pressure - is boiler pressure in psi
Bore - is diameter of the cylinders - in inches
Stroke - is stroke length of the cylinder - in inches
driver dia - is diameter of the drive wheels - in inches
R - is a factor used to adjust the calculated HP

The following are calculated by the spreadsheet not input by the user:
sw vol - is swept volume of the cylinder or volume displaced by the piston as it moves from min to max extension in the cylinder - in cubic inches
TE - is the maximum tractive effort produced by the loco - in lbs
HP - is the calculated maximun horsepower produced by the loco - in hp

In the tables on Professor Smith's website the headings have the following correspondence to Bill's required input:
Dr.
Dia. - is the driver dia

Cylinders
Dia. x Str. - is cylinder Bore x Stroke

Boiler
Press - is Pressure

number of cylinders is 2 unless indicated otherwise in the table

Bob Pearson