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| Title: |
PRR 4-4-4-4 #5507 |
| Description: |
With Raymond Loewy styling and an unusual wheel configuration, this Pennsy duplex is a rare loco. Built in 1945 by the PRR Altoona shops, it had 80" drivers, 300 psi, and a massive engine weight of 502,200lb but produced a respectable 64,653 lb tractive effort. According to Steamlocomotive.com "According to most sources, the divided drive proved to be a major maintenance headache, however, because no way could be found to stop one or the other driver-cylinder set from slipping, either starting or, more alarmingly, at high speed. This liability proved fatal to the chances for real success for these engines, and they were retired well before the much earlier vintage K-4 Pacifics." This one was scrapped in 1953. Gene Connelly photo. |
| Photo Date: |
8/5/1948 Upload Date: 5/24/2014 9:21:31 PM |
| Location: |
Crestline, OH |
| Author: |
Gary Everhart |
| Categories: |
Roster,Yard,Steam |
| Locomotives: |
PRR 5507(4-4-4-4) |
| Views: |
1647 Comments: 0 |
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| Title: |
PRR 4-4-4-4 #6110 |
| Description: |
One of the first two experimental models for the T-1 line, the Raymond Lowey designed looks strange but sleek and shark-like. According to Steamlocomotive.com "The theory behind the duplex drive held that reducing the masses of reciprocating (e.g., main and side rods) and revolving (e.g., cranks and counterweights) would reduce hammering and raise speed. Tests run at a high boiler pressure and late cut-off showed 6,110 drawbar horsepower at 85 mph. In service, these engines could be fast, powerful, and smooth, pulling 910-ton passenger trains at 100 mph.' Unfortunately, there were several issues that caused the premature scrapping in the 1950's of these duplex models. Roger D. Kruger photo |
| Photo Date: |
4/1/1949 Upload Date: 5/24/2014 9:21:37 PM |
| Location: |
Chicago, IL |
| Author: |
Gary Everhart |
| Categories: |
Roster,Yard,Steam |
| Locomotives: |
PRR 6110(UNKNOWN) |
| Views: |
1382 Comments: 1 |
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