GWR 1366 top speed

[HighlandCastle]

Hi there,

I have a question wich is not a very important one but do someone know what the top speed of the GWR 1366 class is?

[figworthy]

You might do better asking in this area :

 

https://www.rmweb.co.uk/community/index.php?/forum/72-uk-prototype-questions/

 

Adrian

[Miss Prism]

I doubt the 'top speed' of a 1366 has ever been tested. I'll guess 25mph.

 

[HighlandCastle]

8 minutes ago, Miss Prism said:

I doubt the 'top speed' of a 1366 has ever been tested. I'll guess 25mph.

 

It sounds a bit slow

[Simond]

I doubt that any formal trials were done, certainly speed-wise, though they’d certainly want to know that it could pull the desired load at reasonable speed.  
 

they’re shunting locos, essentially.  A steam version of an 08, perhaps.  
Wikipedia suggests an 08 would do 15 or 20mph, depending on version.

 

they might make 30, light engine, down hill with a following wind, when well run in, but I’d guess MissP is pretty much on the money.

[Nearholmer]

Small wheels, short wheelbase, outside cylinders, typical of ‘dock shunters’ and a lot of ‘industrials’, so likely to hunt and pitch, then run hot bearing surfaces, if taken above a jog-trot, so I reckon Miss Prism isn’t far out. Locos of that general configuration can ‘wag their tail’ quite alarmingly.

 

08 have double-reduction gearing, so are speed-limited to prevent the traction motors over-speeding and bursting their armatures, which they happily will. 

 

Edited January 12, 2022 by Nearholmer

[pete_mcfarlane]

I would have thought that nobody knows what the real top speeds of small steams locos are, as the riding would get too rough for the crew well below that point.