[PRCo] Re: New PCC truck

[Fred Schneider]

To continue with my earlier thought, one such truck was the Brill  
Radiax truck which had three axles.   The center axle moved from side  
to side and that caused the outer axles to steer.   The design dates  
back into the early 1890s.   It was apparently far less than  
satisfactory because all of the cars in Lancaster, Harrisburg and the  
properties that were integrated into Valley Railways in Harrisburg's  
West Shore that had Radiax trucks were rebuilt with conventional two- 
axle trucks.

On May 26, 2008, at 4:33 PM, Fred Schneider wrote:

> Although my name isn't Boris, there were some compensating trucks
> built with radial axles never under the auspices of the Transit
> Research Corporation.
>
> On May 26, 2008, at 4:17 PM, Phillip Clark Campbell wrote:
>
>>> ----- Original Message ----
>>> From: TEP <tompark at telus.net>
>>> To: pittsburgh-railways at dementia.org
>>> Sent: Monday, May 26, 2008 12:49:31 PM
>>> Subject: [PRCo] Re: OT: Comprehensive LRV show
>>>
>>> I've attached a picture of the PCC derived truck but the video at
>>> 250MB
>>> is too big to post. The ballpark quote was around half a million
>>> per car
>>> --oops make that $600,000 to allow for the fallen US dollar. The
>>> quality
>>> and durability has improved from the Soviet era but is still not to
>>> Western standards.
>>>
>>> /Tom Parkinson P.Eng, Vancouver BC Canada 604-733-5430, fax -5437/
>>>
>> http://lists.dementia.org/files/pittsburgh-railways/SPBogie.jpg
>>
>> Mr.Parkinson:
>>
>> This appears not unlike the LATL B1 but adapted for standard gauge
>> with the biggest difference being springing over the axles like the
>> B2.  The frame is rigid like the B1 isn't it so the B2 torque arms
>> are not needed and the spring pot is singular like the B3 instead
>> of dual.  Axles are open abut gearing is obviously enclosed isn't
>> it.  Does the bolster bolt or similarly attach to the car body?  Is
>> there separate springing at the motor mounts?  Should this be
>> designated the B1-2-3?(:--)>  Thank You for this photo.
>>
>> Mr.Cefer:
>>
>> Is there compensation in PCC trucks for turns on sharp radii?  The
>> actual linear distance traveled on each rail is different isn't it
>> - shorter on inside rail than outside.
>>
>>
>> Phil
>>
>>
>>
>>
>>
>>
>
>