[PRCo] Re: AC

[John Swindler]

The PCC was designed to operate in mixed traffic.  The term "agile" was often used in Conway's annual speeches on the PCC development.  The LRV is not designed for mixed traffic.  In addition, LRVs tend to have a lot more mass to move, but that is a function of the eventual design.  They don't have to be that heavy.  The LRV prototype, at least in US, tends to be the Frankfurt U2 car.  As with most such things, there are trade-offs between weight, motor size, etc.
 
John   
 
 
 
> Date: Sun, 4 Nov 2007 01:37:19 -0800> From: PRCoPCC at P-R-Co.com> To: pittsburgh-railways at dementia.org> Subject: [PRCo] AC> > Fred Schneider wrote:> >> > I was amazed riding the new S-Bahn trains in Munich ... probably only > > 3 miles per hour per second acceleration with those AC-motor cars, > > which isn't great compared to a PCC, but it's essentially linear all > > the way to the top end. The PCC was 4.75> >> Most lrvs have lower acceleration rates than PCCs -- probably because > of the train capability and greater number of standees -- less > opportunity for fall on boards -- don't know that it goes to 3.0 but > 3.5-mph/ps comes to mind.> .> .> >> > He pointed out that everything built in the last decade has had AC > > motors.> >> > Fred Schneider> >> Believe Muni used AC motors on the artic Flyer TrolleyCoaches but went > back to DC on the Bredas -- don't remember details and don't remember why.> .> > Interesting that friend in San Jose wrote about new Metro East Barn > construction -- I wrote that I had seen the line but haven't seen > anything operating. He wrote back::: """Aha! Since it has been > discovered that we both have such a high level of interest in the > construction progress of the Metro East yard on Illinois, I hereby > submit this photo, snatched from an online post on the trainorders > website. Now we don't have to go there to see it in person!"""> .> .> I Geese if I get some of those RailFan type visitors from Out of State > I will then see this in person. But Udderwise, if I have only ridden > the F-line a half dozen times since it officially opened, I doubt I > shall see much of Metro East~!~!~!~!~!> .> .> .> > >> >> >> >> >> > On Nov 3, 2007, at 5:03 PM, Boris Cefer wrote:> >> >> I knew you would appreciate something from the past. I do not believe > >> in a good future but good memories from the past push me forward!> >>> >> B> >>> 
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