click here 
for homepage

JULY 2016 UPDATE  

**************

KIER HARDY (HORNSEY BROADWAY)


BR Swindon built (1960) class 03 diesel mechanical shunter number 2164 is seen resting between duties at Hornsey Road MPD. Allocated to 30A Stratford depot, this loco later became 03164 and lasted in BR service until 1976, then exported to Italy a year later for use in private industry. The model is based around a Mainline bodyshell with a High Level compensated chassis.


This DC Kits Cravens DMBS has been in the Holmeworth / Wibdenshaw / Hornsey fleet for many years, and was constructed by the late Steve Chambers. It has recently been in the workshops for an intermediate overhaul, along with its paired DMC which has been declassified for use on the Great Northern suburban services. Simple enhancements such as fitting footsteps to the bogies improves the model no end (Lima detail parts as supplied with the class 101 Met-Cam).


The trackwork just south of the station has recently been commissioned and tested, and this involved the construction of a relay module for the control of current to the point motors. Using Veroboard (or similar products) to mount the relay bases, it has been found in the past that the copper strip can fail under certain conditions with hairline cracks causing an open circuit, hence the use of fully soldered tracks or jumpers as required, leaving nothing to chance.


Showing the power relay board mounted under the baseboard. These relays are single pole and rated at 16 amps, and are used to switch the 24v from the CDU to the solenoids. This system has proved to be rugged and reliable with the relays lasting well over 25 years in regular service, with hopefully many more years to come. The bank of 6 relays (4-pole) are used to switch the controller / polarity feeds to the trackwork once each route is set.


Shown here is the trackwork associated with the relay modules, giving 8 regular permutations for routing of trains between the fast lines (nearest) and the local lines, via diamond crossovers, and a double slip intermingled with a scissors crossover. Some evidence of fettling can be seen here, then once everything has been tested it can be cosmetically treated.


This 50+ year old technology is still being fitted and commissioned on most of the projects found within the layouts featured on this website, this example showing H&M solenoid units with auxillary micro-switches fitted. Other units by Kean-Maygib, Tenshodo and KTM are also used to good effect.

**************

PAUL JAMES (TRAINSPOTTING AT SHENSTON ROAD)


After spending a couple of hours by the lineside, I managed to capture the following movements on a sunny afternoon at Shenston Road. Class 46 Peak number 165 heads north with a mixed fitted freight, passing the loco stabling point.


The express service from Paddington rolls out of the station behind D1022 Western Sentinel on the last leg of its journey to Wolverhampton.


D1039 Western King is spotted light engine during a quiet moment in the day.


Class 45 Peak number 27 heads north through the station with a rake of empty mineral wagons.

   

**************


    June 2016     August 2016     Site Map for Archive Update Pages

   

**************

Click below for the homepage & index, and 'refresh' page for the latest changes.

click here 
	for homepage