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The following units are being readied for sale to Dakota Minnesota & Eastern:

CP 5501, 5513, 5517, 5520, 5537, 5545, 5549, 5554, 5557, 5561, 5562, 5563




----------------------------------------------------------
Bill Miller - CPR Editor CTC Board Railroads Illustrated
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ICQ# 9907692
The View From Galt Station
"
Canadian Pacific Railway Diesel Locomotive Roster
"
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Relating to this batch of SD40s, all were upgraded to -2 electricals and had
Q-Tron installed. Not knowing anything about the mechanical/electrical
workings of locomotives, I ask this dumb question. Since the Q-Tron device
improved the c.t.e. to 82,500 lbs. from 70,000 lbs., are the units to be
sold with the device installed or is it readily uninstalled for use on other
SD40-2s?

Also while the previous SD40-2s, Bill noted as being sold, were units
"stored unserviceable", these twelve were "stored serviceable", is the
selection of units for sale based on age? I know the CPR is sensitive to the
age of the fleet, its good PR when selling your service.

Rainer

Rainer and group,

Relating to this batch of SD40s, all were upgraded to -2 electricals and had
Q-Tron installed. Not knowing anything about the mechanical/electrical
workings of locomotives, I ask this dumb question. Since the Q-Tron device
improved the c.t.e. to 82,500 lbs. from 70,000 lbs., are the units to be
sold with the device installed or is it readily uninstalled for use on other
SD40-2s?

It would not be readily uninstalled and would definitely be left on the unit!!

I have included a snip from Mr. J. Eaton (who worked for CP Agincourt as
electrical/shop Supervisor) describing a bit about the SD40's in question. I
asked him about any significant characteristics.

"They are SD40-2's. The 5500 to the 5535 are QES 1000's. Microprocessors
modified from SD40's. The rest are regular SD40-2's some with PTC. Thats
about it."

The following units are being readied for sale to Dakota Minnesota &

Eastern:

CP 5501, 5513, 5517, 5520, 5537, 5545, 5549, 5554, 5557, 5561, 5562, 5563

Drew

--
Drew Toner, Mechanical Supervisor,

Pauline Larocque, Toy Poodles,

mailto:keiko@...

From: "Rainer Auer" <auerr@...>

Relating to this batch of SD40s, all were upgraded to -2 electricals and had
Q-Tron installed. Not knowing anything about the mechanical/electrical
workings of locomotives, I ask this dumb question. Since the Q-Tron device
improved the c.t.e. to 82,500 lbs. from 70,000 lbs., are the units to be
sold with the device installed or is it readily uninstalled for use on other
SD40-2s?

One point of interest, Rainer. Q-Tron is an electronics company, based
in Calgary, I believe, not the name of a device. Q-tron builds numerous
electronic devices used on CPR, including about 90% of the speedometers
used on the SD-40s when the original mechanical analogue speedos were
replaced, and the Speed Control which controls the speed of the
locomotive when the train is loading with coal.
The feature you refer to which increased the hauling capacity of the
locomotive was known as the PTC or Positive Traction Control. This
device replaced some of the Electronic modules used in the -2s and, from
what I understand, monitored the amperage going to each traction motor
and when the electricity was cut back to a particular traction motor to
stop the slipping, the extra electricity was transferred to a motor that
was not slipping.

Also while the previous SD40-2s, Bill noted as being sold, were units
"stored unserviceable", these twelve were "stored serviceable", is the
selection of units for sale based on age? I know the CPR is sensitive to the
age of the fleet, its good PR when selling your service.

Rainer

----- Original Message -----
From: Bill Miller <bmiller@...>
To: <C-P-R@...>
Sent: May 16, 1999 5:31 PM
Subject: [C-P-R] SD40's to Dakota Minnesota & Eastern

From: Bill Miller <bmiller@...>

The following units are being readied for sale to Dakota Minnesota &

Eastern:

CP 5501, 5513, 5517, 5520, 5537, 5545, 5549, 5554, 5557, 5561, 5562, 5563

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Bob Eley ?
ICQ # 7813066
Revelstoke (Pleasantville), B.C.

If I can't take my Mac with me when I die,
Then I'm not going

Bob and all,

One point of interest, Rainer. Q-Tron is an electronics company, based
in Calgary, I believe, not the name of a device.

And for the record, Q-Tron (yes they are in Calgary) was just bought/obsorbed or
otherwise taken over by MPI, Motive Power Industries!

Q-tron builds numerous
electronic devices used on CPR, including about 90% of the speedometers
used on the SD-40s when the original mechanical analogue speedos were
replaced, and the Speed Control which controls the speed of the
locomotive when the train is loading with coal.

As well as the Datacord 6000 Event Recorders, which in fact are a 'black box'.
(even RaiLink[oops] uses Q-Tron)

The feature you refer to which increased the hauling capacity of the
locomotive was known as the PTC or Positive Traction Control. This
device replaced some of the Electronic modules used in the -2s and, from
what I understand, monitored the amperage going to each traction motor
and when the electricity was cut back to a particular traction motor to
stop the slipping, the extra electricity was transferred to a motor that
was not slipping.

You will notice that some units have an 'axle generator' and cable on each axle.
Those are the units that have PTC or some form of it. As the axle turns, it
'generates' a pulse/signal that is sent up to the Isolation Amp. From there, the
signal can be used for such things as the speedometer, pace setter, event
recorder, crew alert/RSC, as well as being able to look at all six pulses and
determine when a wheel is slipping!

A locomotive with only one or two axle generators would have the older, more
primitive relay type of wheel slip protection.


--
Drew Toner, Mechanical Supervisor,

Pauline Larocque, Toy Poodles,

mailto:keiko@...

To Bob, Drew et al I appreciate your comments and the descriptions of the
workings of P.T.C.. My questions and terms of reference were based on the
terminology used in the "Canadian Trackside Guide". These twelve units are
upgraded SD40s to SD40-2 electricals, but definitely are not SD40-2s. As to
Q-Tron and whatever components they manufactured to enhance the tractive
effort of these units, I merely presumed there to be a distinction between
their components (as used in the SD40s) as opposed to those used on the
SD40-2 units. There were 24 CP SD40s (plus 5 of the ex QNSL SD40s) upgraded
to the 82,500 lb. rating.

The question then arises, did Q-Tron supply the Positive Traction Control
for the 208+ SD40-2s that had their tractive effort upgraded, or was this
equipment provided by another supplier? No, I won't bring RaiL...Amer...
into the picture.

Rainer

Drew could probably give you more detail on this matter but yes, Q-Tron
did supply all the electronics for the PTC upgrade. Incidentally, from
an
locomotive engineer's point of view, the PTC upgrade did make a lot of
difference in the performance of the engines. Our haulage capacity was
automatically increased so the CPR loaded extra tons on the trains. We
went up the hills a little slower with the extra tonnage, but we seldom
stalled. The PTC units were especially an improvement in rain or snow
operation. The lead axle would be slipping badly, as usual because of the
poor rail conditions, but our speed wouldn't decrease as much as with
a non PTC unit.
We were still governed by the short time ratings on the traction motors
which was sometimes hard to do because our ammeter would be
registering lower amperage if the traction motor it was monitoring
(# 2 axle, I believe) was experiencing slippage and thus amperage
reduction
to counteract the condition. Meanwhile, other axles would be getting
full
power. We were limited to a certain length of time loading at a certain
amperage so the experience of the engineer was called on to estimate
what the motors were actually loading at to determine the time limit.

From: "Rainer Auer" <auerr@...>

To Bob, Drew et al I appreciate your comments and the descriptions of the
workings of P.T.C.. My questions and terms of reference were based on the
terminology used in the "Canadian Trackside Guide". These twelve units are
upgraded SD40s to SD40-2 electricals, but definitely are not SD40-2s. As to
Q-Tron and whatever components they manufactured to enhance the tractive
effort of these units, I merely presumed there to be a distinction between
their components (as used in the SD40s) as opposed to those used on the
SD40-2 units. There were 24 CP SD40s (plus 5 of the ex QNSL SD40s) upgraded
to the 82,500 lb. rating.

The question then arises, did Q-Tron supply the Positive Traction Control
for the 208+ SD40-2s that had their tractive effort upgraded, or was this
equipment provided by another supplier? No, I won't bring RaiL...Amer...
into the picture.

Rainer

Bob Eley ?
Locomotive engineer
CPR Shuswap Sub
ICQ # 7813066

If there are no trains in Heaven, then I'm not going!