Rail-Online Posted February 24, 2023 Share Posted February 24, 2023 Hi, I thought this was rather an unusual signal, with LQ GER(?) arms yet a tubular post. It was just south of Cambridge Stn, with the former LNWR line going off behind it. Is it motor worked as well? Cheers Tony 1 Link to comment Share on other sites More sharing options...
stewartingram Posted February 24, 2023 Share Posted February 24, 2023 The station area was resignalled (don't ask me the details) way back in the 20s?) using power operated LQs.These lasted until colourlights in a much later resignalling. I always thought the ones you posted were part of that scheme? There were also, if I remember correctly, some similar single post multiple arm shunt signals opposite the cattle market (the"coal yard")? Link to comment Share on other sites More sharing options...
Wickham Green too Posted February 24, 2023 Share Posted February 24, 2023 The corrugated steel arms would probably suggest a post grouping installation. Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 It a BPRS signal. Cambridge was all electric from around 1919ish? 1 1 Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 Watch out i could go on about this system for hours.. 1 1 Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 A better look at the arms… Funnily enough I’m just commissioning one of the 110v D.C. signal machines. The team will be working on it again tomorrow so I should be able to post a video of the motor in action. It’s on a slotted co-actor that requires quite a lot of weight to pull two arms off. Equally so it needs a lot of weight to pull the slot back. Not a problem from a lever but there are not many signal machines that will happily pull off 50lbs. 7 Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 The signal and point machines were operated from an interlocked drawslide frame. Here is one on test. I push the slide to the check position. I then apply 110v DC and a solenoid pulls the slide back into the frame.. Normally the 110v DC for this action comes from the signal machine itself via detection contacts to prove it has returned to 'on'. 4 Link to comment Share on other sites More sharing options...
Michael Hodgson Posted February 24, 2023 Share Posted February 24, 2023 5 hours ago, Rail-Online said: Hi, I thought this was rather an unusual signal, with LQ GER(?) arms yet a tubular post. It was just south of Cambridge Stn, with the former LNWR line going off behind it. Is it motor worked as well? Cheers Tony Assume the hut is for fogman? Link to comment Share on other sites More sharing options...
Rail-Online Posted February 24, 2023 Author Share Posted February 24, 2023 Very interesting - I will look at other photos of the station now...... Cheers Tony Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 6 hours ago, Rail-Online said: Hi, I thought this was rather an unusual signal, with LQ GER(?) arms yet a tubular post. It was just south of Cambridge Stn, with the former LNWR line going off behind it. Is it motor worked as well? Cheers Tony Cambridge South 118 and 119 signals 2 1 Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 CN for completeness.. 3 Link to comment Share on other sites More sharing options...
LNERGE Posted February 24, 2023 Share Posted February 24, 2023 7 1 Link to comment Share on other sites More sharing options...
LNERGE Posted February 26, 2023 Share Posted February 26, 2023 Two more shots of a Cambridge signal.. 2 1 Link to comment Share on other sites More sharing options...
Michael Hodgson Posted February 26, 2023 Share Posted February 26, 2023 2 hours ago, LNERGE said: Two more shots of a Cambridge signal.. ...fixed as Danger, as it has no operating wire, also no lamp or ladder Link to comment Share on other sites More sharing options...
LNERGE Posted February 26, 2023 Share Posted February 26, 2023 5 minutes ago, Michael Hodgson said: ...fixed as Danger, as it has no operating wire, also no lamp or ladder Just in case anyone wanted to attach it to the nearby L frame.. 1 1 Link to comment Share on other sites More sharing options...
RMweb Premium uax6 Posted February 26, 2023 RMweb Premium Share Posted February 26, 2023 On 24/02/2023 at 12:13, Rail-Online said: Hi, I thought this was rather an unusual signal, with LQ GER(?) arms yet a tubular post. It was just south of Cambridge Stn, with the former LNWR line going off behind it. Is it motor worked as well? Cheers Tony Those Signal motors are lovely bits of kit, but not for those with no muscles! I've got a selection of bits and pieces of them, enough to make two machines, one 10v the other 110v, both DC. The casing is cast iron, and is impossible to lift on your own, even when empty! The three post mounts I have are for square section posts sadly, as ideally I'd like to put one on a tubular doll, but there are always ways round it. Interestingly they were designed to be able to be mounted at the top of the post with the arm directly on the end of the drive spindle, although I have no idea how you would get the thing up there! Inside they are lovely, lots of gears, all nicely made, and some good sized contacts. I really must get back to finishing off putting them back together! Andy G 3 Link to comment Share on other sites More sharing options...
LNERGE Posted February 27, 2023 Share Posted February 27, 2023 2 hours ago, uax6 said: Those Signal motors are lovely bits of kit, but not for those with no muscles! I've got a selection of bits and pieces of them, enough to make two machines, one 10v the other 110v, both DC. The casing is cast iron, and is impossible to lift on your own, even when empty! The three post mounts I have are for square section posts sadly, as ideally I'd like to put one on a tubular doll, but there are always ways round it. Interestingly they were designed to be able to be mounted at the top of the post with the arm directly on the end of the drive spindle, although I have no idea how you would get the thing up there! Inside they are lovely, lots of gears, all nicely made, and some good sized contacts. I really must get back to finishing off putting them back together! Andy G I'll post a video of the motor in action in due course. As I mentioned upthread this is possibly the only motor capable of lifting 50lbs on the weightbar pulled from the hole nearest the fulcrum. Link to comment Share on other sites More sharing options...
dave55uk Posted February 27, 2023 Share Posted February 27, 2023 (edited) On 24/02/2023 at 18:19, LNERGE said: CN for completeness.. Now, to my eyes, there's something wrong with the Cambridge North diagram. Down at the bottom, the lower two lines are down goods and down reception. But where's the up goods? It should between those two mentioned. And the exit from the down yard to the down goods was a crossover, not as shown leading into what was the up goods. Edited February 27, 2023 by dave55uk Link to comment Share on other sites More sharing options...
RMweb Gold 5BarVT Posted March 11, 2023 RMweb Gold Share Posted March 11, 2023 Start of stageworks for Cambridge resignalling? Paul. Link to comment Share on other sites More sharing options...
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