2RT2 3RT3 10ST10?

[Graham Harrison]

In the days when London ordered buses like the ST and RT such vehicles had a
designation in the form shown above (e.g. 2RT2). What does it mean?

[Graham Harrison]

"Paul Corfield" <aoo...@dsl.pipex.com> wrote in message
news:6730k79vidrbkpjpg...@4ax.com...

> This site might help.
>
> http://freespace.virgin.net/ian.smith/buses/index.htm
>
> --
> Paul C

It's very interesting, thank you. Unfortunately it doesn't seem to answer
the question. For instance the STL seems to have gone from a first batch
1STL1 to 2STL1 (same body and chassis differences to ignition and exhaust)
to 8STL4 (different chassis, petrol engine, crash gearbox, different brakes)
but no explanation why and what the numbers mean.

[tony]

On Feb 19, 10:41 am, Paul Corfield <aoo...@dsl.pipex.com> wrote:
> On Sun, 19 Feb 2012 09:20:24 -0000, "Graham Harrison"

>
>
>
> <edward.harris...@remove.btinternet.com> wrote:
>
> >"Paul Corfield" <aoo...@dsl.pipex.com> wrote in message
> >news:6730k79vidrbkpjpg...@4ax.com...
> >> On Sat, 18 Feb 2012 19:53:11 -0000, "Graham Harrison"
> >> <edward.harris...@remove.btinternet.com> wrote:
>
> >>>In the days when London ordered buses like the ST and RT such vehicles had
> >>>a
> >>>designation in the form shown above (e.g. 2RT2).   What does it mean?
>
> >> This site might help.
>
> >>http://freespace.virgin.net/ian.smith/buses/index.htm
>

> >It's very interesting, thank you.   Unfortunately it doesn't seem to answer
> >the question.   For instance the STL seems to have gone from a first batch
> >1STL1 to 2STL1 (same body and chassis differences to ignition and exhaust)
> >to 8STL4 (different chassis, petrol engine, crash gearbox, different brakes)
> >but no explanation why and what the numbers mean.
>

> I've posed your original question on another group to see if anyone
> knows of a suitable on line resource or book for you to use for
> research. I don't know the answer myself.
>
> --
> Paul C

I understand the first number refers to any chassis variation and the
latter to any body variations.

Tony Martin

[Bevan Price]

Tony is correct. If you want more details, look for the "London Bus
File" series of books by the late Ken Glazier. Probably out of print,
but I have seen copies in remainder shops and at second hand dealers
specialising in transport subjects.

1RT was the prototype chassis design (RT1).
2RT were the pre-war production series (RT2-151)
3RT was the basic post-war production series, but there was also a 1/3RT
variant for Green Line coach services.

RT3 was the basic (postwar) bodywork type, but there were a lot of
sub-varieties dependent on detail differences or body builders.


6RT6 were the Leyland-built RTW class
7RT were the RTL class, with variations in bodytype such as RT3/1, RT7,
RT8/2, etc.

Bevan

[Graham Harrison]

"Bevan Price" <bevanp...@btinternet.com> wrote in message
news:6MSdnQ8dKcqN0NzS...@bt.com...

Can I make sure I understand? The number preceding the letter(s) is the
chassis variant and if that is preceded by another number followed by a
slash (e.g. 1/3RT) then the first number is the chassis sub variant.
Similarly the number after the letters is the body variant and if it's a sub
variant then we get a slash and another number (e.g. RT3/1) So, 1/3RT3/1
would be sub variant 1 of the variant 3 RT chassis carrying a sub variant 1
of the variant 3 body.

Now I'll go and look for books.

Thank you.

[Bevan Price]

That is my understanding of how the LT classification system operated.
Note that bodies were often interchanged during overhaul, so you may
even find photos of the "same" bus, but with two different body types
(most noticeable only if one of the bodies had the older design with the
route number display box at roof level.)

Just done an internet search, and Amazon are selling (2nd hand) copies
of some of the books. Go to Amazon UK site and enter "London Bus File"
into the search box. Prices seem reasonable unless you wanted the 1933 /
1939 double deckers volume. The books contain fleet lists of all buses
in service or purchased during the years specified by the title, plus
dates of entry into service or withdrawal dates, and a good selection of
photos. Unfortunately, the series covers only until 1962.

Bevan

[Portsmouth Rider]

"Bevan Price" <bevanp...@btinternet.com> wrote in message

news:3N-dneya2_AbF9zS...@bt.com...

But when a bus went into major overhaul, body, reg plate and chassis were
parted and overhauled seperately, and there was little chance of the three
actually meeting up together on the same vehicle at re-assembly time.....
:o)

[John Williamson]

As far as I know, the only LT bus to still have the same body,
registration and chassis as it came out of the factory with is RM8.

--
Tciao for Now!

John.