- October 7
"Tuesday Night Work Sessions" have become "Wednesday Night Work Sessions"
in deference to the problem set scheduling of two of our undergraduates.
John M worked on the roundhouse. John P and Alvar worked on the switch
control system. John P also worked on his produce warehouse building.
- October 14
Jeff, James, and Alvar worked on wiring an electronic switch kludge into
the layout. Now by pointing and clicking at the computer (although not on a
layout diagram), any of eight switches (complicated crossovers, no less)
can be operated. John Purbrick worked on a computer screen layout diagram
that Jeff requested. The diagram is close to that which Jeff used to wire
System 2 to the current layout. John also worked on the produce warehouse
roof, awning, and doors. With its new brick walls, it is starting to look
really sharp. John McNamara continued his research on duplicating the
roundhouse floor covering for the extended stall sections. SP Lark Gray
with a wash of black acrylic is close, but a little too blue.
This Wednesday was the first Wednesday Night Session. In order
to accommodate student schedules, Tuesday Night Sessions have been
moved to Wednesday nights.
- October 17
Bill continued work on the Vegetable Oil facility located at the
far East of Gifford City. The back of the building is now defined,
and 'real' walls are going to appear soon.
Jeff and Alvar worked on refurbishing the ping-pong track, in order
to support locomotives that may pull a lot of current. Now the
ping-pong track does not reset all the time when non-perfect
locomotives are used.
- October 21
The final version of the TMRC Switch Cards came in! So,
Jeff, James, John P, and Alvar worked on stuffing them. Within an
hour FOUR of them were fully stuffed AND tested. We now have all
the boards we need to wire all the switches for the current phase.
John M did additional work on finding the right color to match the
roundhouse floor. It appears that Floguil SP Lark Light Gray with a light
over-wash of black acrylic is close enough. The acrylic wash should be
thinned with water that contains detergent so that the wetting agent effect
will cause the black to work into the cracks between the bricks. Next week
an actual in-place painting experiment will be attempted.
Andy applied TNP and loco number details to the E8A and E8B acquired a few
weeks ago. The loco numbers, 1207 and 1212 are based on the TNP custom of
2/3 the horsepower and also reflect MIT courses 1.207 and 1.212:
- 1.207 = Introduction to Intelligent Transportation Systems
- 1.212 = Modeling Transportation Networks
- October 24
Andy Miler finished the labeling of the new Aaron Burr locomotives
(an A unit and a B unit) so that they can go in a westward direction.
In a similar note the Talgo (from Ken Central) made quick appearance
John Purbrick continued his work on the Produce Terminal, installing
a structure (made out of track!) that holds up the ceiling. Meanwhile
Bill continued work on the Vegetable Oil Facility. Dick Lord worked
on some MoW track work to ensure its quality.
James finished adding connectors to the new Switch Cards, and changed
#2 to maintain a standard with the rest of them. Alvar cut all the wires
needed to install SC #2, which should happen by the end of next week.
Alvar also worked on the 'new' main TMRC page. Ben showed us a model
of his implementation of the 'never stopping' belt for his model of
the Flint&Noble bulding.
- October 25
Major revamping of the web-page! The main page now has neat
java-script enabled image changes and an improved menu.
A new Feedback & Contact page has
been created. The 'Visit' page and the 'Contact' page are now
Also, starting with the November meeting, the meetings will be
announced in this section of the web-page, as above.
- October 28
Jeff and John P worked on the design of circuitry that will permit the
computer to make the initial assignment of trains to blocks in the existing
System 2. When this design has been implemented, these circuits, plus the
switch-throwing system now being installed, will completely eliminate the
need for the PDP11-based "S-board" used in Building 20. Speaking of the
switch-throwing system, Alvar installed "Board #2" providing an additional
7 computer-thrown switches. John M painted a replacement section in the
roundhouse floor. Color match was good, but more work remains to be done on
- October 31
Bill continued more work on the vegetable oil distributor at the east
side of Gifford City. John McNamara continued his work on the Round
House, by installing another section of floor. He is trying a new
technique to make the seam almost invisible.
John Purbrick brought a new version of the 'pcb' test software which
now includes an interface to assign trains to cabs - although the
actual hardware is missing (soon to come!). Jeff and Alvar installed
Circuit Board #3! We are half way there with the switches!