[PRCo] Re: early version of a monomotor truck

[rejmhj at netzero.net]

I'm not so sure it wouldn't.  The left hand axle has a very different interface with the axle than the right side has.  I suspect that there is flexibility built into the left side mounting.  The name implies European origin, and they are typically quite good in mechanical engineering.  The one in my files is from a different source and quite simpler - and of course might not have worked.  Haven't seen it in years, so can't comment further.
Russ Jackson
---------- Original Message ----------
From: Dennis Lamont <ge13031 at yahoo.com>
To: "rejmhj at netzero.net" <rejmhj at netzero.net>
Cc: billvigrass at verizon.net, oerm196 at yahoo.com, hassel8 at comcast.net,  jackmay135 at gmail.com, dwightlong at verizon.net, pfuhler at msn.com,  tracksofnyc at gmail.com, fwschneider at comcast.net, artwheeler at trolleybuses.net,  pittsburgh-railways at dementix.org
Subject: Re: 1893 version of a PCC truck
Date: Sun, 12 Feb 2012 17:22:51 -0800 (PST)


Here's a shot of a 1892 Rae mono motor setup .....no way this could ever work out in real life.  The english truck at least has one motor per axle and the shafts have a flexible coupling on them giving them reasonable flexibility. 
Somewhere in the files I have a shot or drawing of a similar truck proposed in the US - I forget the proposer's name, but it was similar vintage.  It is quite incorrect to relate it in any way to ERPCC, which according to Sy Kashin looked at the idea but rejected it as having too many maintenance implications.  The monomotor scheme works OK if you are careful with maintenance, but is weighty because you have cast steel from axle to axle.  There was a PCC in the Hague that was equipped with DuWag monomotor trucks as a test, and I did ride it.  It didn't ride any better and the maintenance engineer there said it increased the car weight by no small amount.  Eventually the trucks were sold to Dusseldorf.
Russ Jackson
---------- Original Message ----------
From: Dennis Lamont <ge13031 at yahoo.com>
To: billvigrass at verizon.net, "rejmhj at netzero.net" <rejmhj at netzero.net>
Cc: oerm196 at yahoo.com, hassel8 at comcast.net, jackmay135 at gmail.com,  dwightlong at verizon.net, pfuhler at msn.com, tracksofnyc at gmail.com,  fwschneider at comcast.net, artwheeler at trolleybuses.net,  pittsburgh-railways at dementix.org
Subject: Re: 1893 version of a PCC truck
Date: Sun, 12 Feb 2012 12:39:48 -0800 (PST)


A little before its time EH WOT ! Dennis

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