No. 153 The ex LMS Fowler 2P – an update
Back in 2015 I wrote a Post for my Blog detailing an improvement to the old Mainline / Dapol model of the ex LMS Fowler 2P
Mainline Ex LMS 2P from 198
Crucially the work required access to Hornby spare part
X6475, the front bogie from their latest engine drive 2P (R3028). Sadly as said in my previous Post about
remotoring the HornbyQ6, Hornby seem to have given up on providing useful spare parts. Front bogie X6475 continues to be out of
stock.
After being tempted by a Dapol offering on eBay I needed to
find an alternative solution.
Dapol Ex LMS Fowler 2P listed on eBay
The ex LMS Fowler 2P was a very common locomotive and as
such should feature on BR (LMR) and BR (SCR) layouts. Back in history Tri-ang produced a model of a
southern L1. It was engine driven and when
repainted black it could be used as the starting point for a model of the ex
LMS engine. However as in the prototype
the 4-4-0 wheel arrangement of the model does not lend itself to heavy
trains. The engine driven model did not
haul very much and was not popular. Now
what if there had been a tungsten chassis?
Tri-ang L1 – image courtesy of the ‘Saleroom’
Mainline solved the problem by using a tender drive borrowed
conveniently from their existing model of the 4F (which they had acquired from
Airfix)). The tender drive was cheap and
cheerful and with careful maintenance it worked well. However for the 2P Mainline only provided
electrical pickups on the locomotive driving wheels. For most people’s model railways these were
woefully inadequate. As was said in my
Blog previously, Mainline must have been aware of the probabilities of poor
running because the plastic chassis and bogie are engineered to accept
pickups. Mainline look to have been
contemplating the same phosphour bronze ‘concertina’ pickups as were used on
the driving wheels. I am only guessing,
but this form of spring contact generates a high resistance to wheel rotation
and perhaps when applied to the lightly loaded bogie it would have caused too
many derailments.
Wiper pickups from Hornby X6475 bogie
The latest Hornby bogie has wiper pickups which generate far
less friction than the concertina arrangement.
I would add my own wiper pickups to an old Mainline / Dapol bogie. A search of my stash of bits and pieces
highlighted some wiper pickups These had
been recovered from the bogies of a Bachmann Warship – “Sir Brian Robertson” to
be precise which had failed with Mazac rot.
Wiper pickups from Bachmann Warship
I removed the phosphor bronze wipers from their plastic
backing and cut them to what I thought was a better shape for the Mainline
bogie. The Bachmann spacing is too small
to replicate the Hornby wipers on top of the bogie. Also it has to be remembered that it is only
the wheel rim that is ‘live’ and that if the pickups to both sides of the bogie
rub against the axle there will be a short circuit. I had an idea to fit the wipers below the
axles without increasing the depth of the bogie.
Phosphor bronze extension – cut from Hornby Duke of
Gloucester tender pick up
I soldered the Warship wipers to a rectangular strip of
phosphor bronze, bent over at the ‘top’ and tailored to fit the side of the
Mainline bogie. In this case the
rectangular piece was cut from a left over strip out of Hornby’s Duke of
Gloucester tender – but there will be other sources. (In my case these were spare after upgrading
the DoG tender with the underframe from a Britannia with sprung buffers.)
Dry run
I had a number of good ideas for fixing. Not interfering with the central bogie pivot
is a must. In the event I soldered the connecting
wires prior to using Super Glue to fasten the pickups to the top of the
bogie. This way the top and bottom
halves of the bogie cab still be separated which might just be necessary if you
ever wanted to re-bend the wipers – or change the wheels.
Soldered and glued prior to painting
The finished unit is shown below
Complete Mainline 2P bogies with phosphor bronze pickups
below the axles
The soldered connection to the locomotive chassis is the
same as used in the previous Blog Post for the Hornby bogie:
Connection to Mainline 2P chassis
How does it perform?
I would say very well!
Finally a view of the finished engine grabbed from the
video.
Improved Dapol Ex LMS Fowler 2P
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