Hi guys
amazed I hadn't read this string before, East Suffolk was my project!
As for VMS, there have been comments that they are too bright, we installed a couple as points indicators at Beccles pending the final commissioning, came back during that work early in the morning from lodging at Lowestoft, went across Beccles bypass and thought there was a second sun rising!
As for lightness, yes very light.
Holes in the front, well apparently they are all "self cleaning" if you read the blurb from the manufacturer, as for snow, we had lots recently including the "wrong type of snow" and I haven't heard anything bad (yet).
Changeover is via plug couplers.
As for leaks, I haven't come across this one yet ~ welds that foul the hinge mechanism and stripped threads on the stainless bolts that connect the aluminium post to the steel base are the ones that I have witnessed.
So why did we install them? At the time the decision was made there was a big push to have lightweight signals from Network Rail, and at that moment in time VMS were the only approved product, the GRP Dorman versions only had trial certification.
The Hydro Kinetic points operating equipment, this all went to Scotland and the existing points on East Suffolk were changed to HW operation (Beccles is IBCL)
The project as a whole was heavily reliant on the Fixed Telecoms fibre Network (FTN) being in place, there are basically small islands of signalling equipment along the line of route.
It's ironic that these islands nearly replicate the areas controlled by the local signalboxes prior to RETB!
This project might also be one of the last to roll out conventional SSI instead of more modern signalling systems such as "Smartlock", again at the time this type equipment was not available to us, and because of the ridiculously tight timescales we were working to we needed something with a proven track record that was readily available.
I do love the fact that I was part of the project that installed 500m of new railway in East Anglia at Beccles and doubled the train service to that end of the world (shouldn't have taken it all out in the 1980's if you ask me!)
The whole project was less than £12M (contractors price - last time I looked) which isn't bad for the resignalling of 45 miles of railway, a new passing loop and a new control centre, not to mention it's been relatively reliable (I won't mention Ely - Thetford - Norwich as a comparison ~ ooops, I just did)
I'll get some photos uploaded when I get a chance.
Mike