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Retlaw · 19-04-2008, 20:38

Those three tools are the big spanners they used to tighten the bolts on the fish plates, which join the rails together. The joint make the noise diddly de diddly dum as the train psses over the joints.
The fish plates had elongated holes in them, during summer months the lines expanded, if there wasn't a gap the lines would have buckled. The coefficient of linear expansion for steel is .078 per degree fahrenheit x 10 -4, so a 20 yard length of rail line needs a fair gap
Retlaw

There are 3 tools on the track directly in front of the men to the right of the picture but unfortunatly the clarity is not good enough to make out what they are. Neither can I make out the wording on the sign immeadiatly behind the signal post (NO ROAD possibly)..However, the photograph was taken in Spring/Summer.[/quote]

19-04-2008, 20:38	#40
Retlaw I am Banned Join Date: Jun 2004 Location: Accrington. Posts: 4,627 Liked: 601 times Rep Power: 0	Re: Accrington Train station Those three tools are the big spanners they used to tighten the bolts on the fish plates, which join the rails together. The joint make the noise diddly de diddly dum as the train psses over the joints. The fish plates had elongated holes in them, during summer months the lines expanded, if there wasn't a gap the lines would have buckled. The coefficient of linear expansion for steel is .078 per degree fahrenheit x 10 -4, so a 20 yard length of rail line needs a fair gap Retlaw There are 3 tools on the track directly in front of the men to the right of the picture but unfortunatly the clarity is not good enough to make out what they are. Neither can I make out the wording on the sign immeadiatly behind the signal post (NO ROAD possibly)..However, the photograph was taken in Spring/Summer.[/quote]