show switch stack-ports detail Command Output: Example.show switch stack-ports summary Command Output: Example.Provisioning a New Member for a Switch Stack: Example.Enabling the Persistent MAC Address Feature: Example.Configuration Examples for Switch Stacks.Reenabling a Stack Port While Another Member Starts.Upgrading a Switch Running Incompatible Software.Offline Configuration to Provision a Stack Member.Active and Standby Switch Election and Reelection.Persistent MAC Address on the Switch Stack.Oddly one RR didnt opt for the 4 stack conversion. Here are some of the rebuild locos that feature 4 stack manifolds include. (most of the CR GP-38s sport this kind of four stack manifold.) However some RRs later did find a way to design a 4 stack manifold that allowed the dynos to be kept. Space, The dynamic break blister gets in the way and only leaves room for 2 exhaust ports. Well if this is so great, Why didnt EMD do this from the start? The 567C gains about 50HP from this conversion. the 1500HP 567B B/C gains about 100HP from this conversion alone. (less exhaust backpressure) Better fuel economy and more Horsepower result. On particuarly the non-turbo 567s but on the non-turbo 645s to a lessor extent, RRs found that 4 stack manifolds allowed to engines to breathe eaiser. The real reason for the 4 stacks versus 2 stacks is beter ecomomy and more horsepower. When all of the factors on the table you will see that various exhaust stack configurations are possible with different prime movers whether or not they are turbocharged and regardless of the make be it EMD, GE, CAT, Sulzer or any other prime mover manufacturer. Then there is the MK5000C which is powered by a turbocharged CAT prime mover and it has 1 exhaust stack. If you take a look at the MP1500D's and MP2000D's offered by Boise Locomotive you will notice that they have 1 exhaust stack and that they are powered by CAT prime movers. I don't know where you came up with the idea that 4 exhaust stacks indicate a CAT prime mover, but thats not true either. This was a standard feature on all of the GP8, GP10 and GP11 rebuilds that were outshopped by the IC's Paducah shops. Plenty of old GP7's and GP9's have been equiped with the additional exhaust stacks. Missouri Pacific was very fond of the 4 exhaust manifold most if not all of their GP35M's, GP38's, GP38-2's, GP15-1's and GP15AC's were equiped with it as well as early model Geeps which may have aquired it during rebuilding. Non-turbocharged units with 4 exhaust stacks are very common. Both of these 6000 hp locomotives have prime movers with dual trubochargers which require the dual exhaust. The AC6000CW also has large dual exhaust stacks which are side by side and are clearly visible on the roof over the engine compartment. The SD90MAC-H has 2 exhaust stacks which are located side by side though they are recessed into the roof and not really visible. These days not all turbocharged locomotives have single exhaust stacks. To start, Conrail never repowered any of its locomotives with Caterpillar prime movers. Essentially the use of One Large stack indicates the use of a Turbocharger on the prime mover while 2 stacks indicate a normally aspirated prime mover and these days 4 would indicate that a Caterpillar prime mover is under the hood<< >Although I do beleive that Conrail did have some units rebuilt with Caterpillar prime movers which may have 4 exhaust stacks on those units.
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