Several electric transport museums have both trams and trolleybuses. They
have a separate negative trolley wire alongside the tramway positive wire.
The original Sydney - Potts Point trolley buses were stabled at Rushcutters
Bay tram depot in the former cable engine house building alongside the car
shed. Trolley buses running "empty buses" between the depot and the Kings
Cross intersection raised their negative pole onto a special negative
trolley wire between the Up and Down tram wires. For this reason, these
trolley buses were non standard as the positive wire throughout the route
was closest to the kerb.

In Perth, trolley buses operating from the East Perth car shed towards the
route in the city used a skate at the end of a short pole attached at the
rear of the vehicle. The attached image shows a Perth trolley bus leaving
the car shed with only the positive pole raised and the skate sliding along
the tram rail. I once observed a potential problem when a Perth trolley
bus was turning left from Hay Street into Barrack Street. The tramway
points were set for the straight track, so the skate became derailed
accompanied by an arc as the circuit was broken.

Modern trolley buses have auxiliary traction batteries to allow travel 'off
wire'. In a museum situation, the traction batteries would allow trolley
buses to operate beyond the trolley wires at the museum. This facility would
be useful in avoiding a complicated loop or triangle at the terminus.

Noel Reed.

From:TramsDownUnder@... [mailto:TramsDownUnder@yahoogroups.com]

Sent: Sunday, 27 September 2015 3:32 PM
To:TramsDownUnder@...
Subject: Re: Exhibits at Tramway Museums. [was RE: [TramsDownUnder]
PhotosfromNSWLibrariesMuseums - Manly Ferry Wharf at Circular Quay circa
1946.jpg} also [ TramsDownUnder - was 3 continents in OO scale].

An alternative to the expense of adding another wire (the LPTB found that
this was very expensive as the existing tramway poles were
designed just to support a single wire, and had to replace many of the
poles) is to tow a two wheeled trailer connected to the
negative side of the in-bus circuits. Hopefully only the positive pole would
ever be put up! In the UK and possibly other places,
the TBs dragged a skate along the grooved rail, but this may not be suitable
at STM.

Regards

Dudley Horscroft
----- Original Message -----
From: "'Noel Reed'noelreed10@... [TramsDownUnder]"
TramsDownUnder@...>
To: TramsDownUnder@...>
Sent: Tuesday, September 22, 2015 10:36 PM
Subject: Exhibits at Tramway Museums. [was RE: [TramsDownUnder]
PhotosfromNSWLibrariesMuseums - Manly Ferry Wharf at Circular Quay
circa 1946.jpg} also [ TramsDownUnder - was 3 continents in OO scale].

> Yes Richard, Sydney 'P' class tram No 1700 is indeed at the STM.

>

> There are two museums with the initials STM, the local one at Loftus, NSW

> and 'the other STM' in Maine USA, The Seashore Trolley Museum has Sydney

> 'P' 1700 as one of its operational exhibits.

>

>

>

> The Sydney Tramway Museum of which I have been a member since its

inception
> in the fifties has probably the most comprehensive tramway rolling stock

> register of any in Australia.

>

> There are a few features which could possibly make it more attractive to

> visitors. 1. Tramway signalling. 2. Trolley buses. 3. Tramway models.

>

>

>

> 1. On tramway signalling we have many yet unused tramway signals from

Sydney
> and Brisbane which have so far been unused. I am hoping that some signals

> may be displayed before too long.

>

>

>

> 2. Trolley buses are a part of several British transport museums. The

> 'other' STM in the USA has many 'streetcars', 'interurbans', 'subway cars'

> and also several 'trackless trolleys' which operate at their museum site.

> The STM at Loftus has one former trolley bus from the Kogarah area in

Sydney
> and there is one of the original single deck Sydney trolley buses in

storage
> at a Powerhouse Museum facility.

>

>

>

> One or two trolley buses could form an interesting addition to the tram

> fleet at Loftus. Extra negative trolley wires would allow trolley bus

> operation within the museum grounds. The auxiliary battery which is used

in
> modern trolley buses would allow short journeys 'beyond the wires'.

> Overnight stabling of trolley buses could be arranged at local facilities

> rather than at the tramway museum which is at its maximum occupancy by

> trams. An alternative to a trolley bus auxiliary battery could be a

trailer
> mounted diesel generator set. A generator set could also prove useful for

> operation of work trams 'beyond the wires'.

>

>

>

> 3. Tramway models have a following at a number of model railway

exhibitions.
> There are some excellent model tramways which are regularly displayed at

> model exhibitions in the UK. A model tramway layout using HO gauge models

of
> Australian trams could be built for the STM at Loftus using the inside of

a
> stored R or R1 tram or inside the Kogarah trolley bus which at present is

a
> static exhibit. There would be an opportunity inside a non operational

tram
> for a layout baseboard to be supported on the seat backs rather than on

> trestles. A single line model tramway could have balloon loops at each end

> with one or two intermediate crossing loops. Small replica tram

controllers
> would allow visitors to practice 'driving trams'. One suggested feature

> could be a working model of Sydney's Balmain Counterweight system. A model

> 'cable tram' with a concealed motor in the trailer car could be an

> additional feature.

>

>

>

> Another more modest HO model tramway layout could be built on a baseboard

> which could be accommodated on stands inside one of the infrequently used

> single truck trams with longitudinal seats such as a C class No 12, 29 or

> 290 or in No 11 or 11w. An advantage of such a small layout would be its

> ability to be removed and transported as an exhibit to a local model

railway
> exhibition.

>

>

>

> Noel Reed. Still thinking of tramway ideas.

>

>

>

>

>

> From:TramsDownUnder@...

[mailto:TramsDownUnder@yahoogroups.com]
>

> Sent: Tuesday, 22 September 2015 9:17 AM

> To:TramsDownUnder@...

> Subject: Re: [TramsDownUnder] PhotosfromNSWLibrariesMuseums - Manly Ferry

> Wharf at Circular Quay circa 1946.jpg

>

>

>

>

>

> Hi Noel,

>

> I guess by STM you mean the Seashore Trolley Museum, Maine, USA.

>

> Regards,

>

> Richard

>

>> On 22 Sep 2015, at 09:01, 'Noel Reed'noelreed10@...

> [TramsDownUnder] TramsDownUnder@...> wrote:

>>

>> <'P' 1700 East Circular Quay, Sydney. N F Reed.jpg>

>

>

>

> No virus found in this message.

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>

>

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