[PRCo] [Fwd: Nachods]

[Jim Holland]

-------- Original Message --------
Subject: 	Nachods
Date: 	Sun, 10 Sep 2006 08:50:29 -0700
From: 	Jim Holland <prcopcc at p-r-co.com>
To: 	pittsburgh-railways at dementia.org
References: 	<10839821.1157463296752.JavaMail.root at web26> 
<44FDE3D0.60104 at p-r-co.com> <45036382.9090000 at p-r-co.com> 
<000a01c6d4d4$57d85b30$0380c80a at DFCramer>



 > DF Cramer wrote:
.

 > My experiences working with Nachod contactors at PTM show that they 
work the vast majority of the time but they can easily miscount a car in 
or out, thus leaving an incorrect signal. Speed and pulling power while 
going through a contactor tend to determine the reliability. A worn 
contactor or a worn trolley wheel can also be the culprit.

.
Some time back Fred had mentioned that PTM had problems with the 
contactors because of possible different size wheels being used -- 
forget the details, however.
.
The first I heard of a problem on PRCo was the cornfield meet between an 
Interurban and a 12 on the dinky track between Castle Shannon and 
Mt.Lebanon. I had ridden the system extensively before that -- 65 line 
in particular where there were multiples of Nachods -- and never 
experienced any problems.    Doesn't mean it didn't happen, but I didn't 
experience same.
.
.
.
Jim___Holland