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RE: [CBQ] Re: Junking the D Bills and then leasing the same from C&S

To: CB&Q Group <cbq@yahoogroups.com>
Subject: RE: [CBQ] Re: Junking the D Bills and then leasing the same from C&S
From: "Hol Wagner holpennywagner@msn.com [CBQ]" <CBQ@yahoogroups.com>
Date: Thu, 12 Feb 2015 11:49:42 -0700
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Jonathan:
 
I agree with everything you said, but presumably if the D-4s had been changed into 0-8-0s (where the absence of a pilot truck improved tracking qualities through the many switches of yards and industrial trackage), their driver diameter would have been reduced to 51" or 52", thus considerably increasing their tractive effort.  I have the notebook pages from the Denver shop that describe all that was done to convert a T-1 into an F-2, and considering the amount of work that had to be done on the boiler and firebox, it was nearly equivalent to building a new locomotive from scratch.
 
Hol
 

To: CBQ@yahoogroups.com
From: CBQ@yahoogroups.com
Date: Wed, 11 Feb 2015 17:11:30 -0800
Subject: RE: [CBQ] Re: Junking the D Bills and then leasing the same from C&S

 
Hol and Charlie -

Consolidations were used as switchers on many roads, including the Burlington. Would the removal of the pilot truck on a D-4 have made that much difference? The G-10's converted from the Q's heavy prairies (where removal of the pilot and trailing trucks and reduction of driver size really did matter), developed more tractive effort than the D-4's and had a smaller wheel base. Why wouldn't they be preferred as switchers? 

The Burlington seems to have used 8-wheel switchers only where traffic was particularly heavy. All the Q's 0-8-0's — the F-2s, the USRA F-1's and the sole F-3 (5020, converted from an O-1) — were assigned to areas of heavy traffic: Chicago, Galesburg, Centralia. Elsewhere, 6-wheel switchers probably were sufficient.

I'd assume the conversion of the T-1's to F-2's was to produce a very heavy switcher to handle long cuts of heavy cars. Those things developed 60,700 lbs. tractive effort, substantially more than the D-4's did or would have had they been converted to 8-wheel switchers. 

Jonathan

 




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Posted by: Hol Wagner <holpennywagner@msn.com>



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