Many thanks John

LBSC gives the Pansyette cylinder block a width of 1-15/16", which coupled with
a couple of frames at 3/32" provides a reassuring 2-1/8". (If using 2.5mm plate
then presumably, since 3/32" = 2.38mm, I simply make the cylinder block 0.12 mm
narrower.)

I'll email Christopher for an update on castings.

I did worry about the injector – fortunately Pansy's design includes a crosshead
water pump and a hand pump in one of the panniers. Like you, I fancy
experimenting with small injectors – if they work great, if not then I'll stick
with the pumps.

Any other bits and bobs that scale badly? I am assuming that most of the
'mechanical' bits will scale well, but that components involving steam flow /
heat transfer need examining.

Cheers

Matt



--- In halfinchlivesteamforum@..., "John Baguley" <baggo@...>
wrote:
>
> Hi Matt,
>
> Welcome to the forum!
>
> The Association do list a photocopy of the 'articles' for Pansyette but I
think they will just be copies of the ME articles that you already have.
>
> The castings side of the Association has recently been taken over by
Christopher Cruikshank and it might be worth contacting him re castings etc.
>
> His email address is chc(at)jacom.co.uk
>
> We've recently acquired all the stock and patterns from Alan Headech and there
may be some suitable wheel castings there.
>
> There are a couple of 'standards' for 2½" gauge that you might be best to
follow i.e. the outside width of the frames is 2-1/8" and the back to back
dimensions of the wheels is 2-9/32". The overall width of the tread including
flange is 5/16".
>
> Frames for 2½" locos are usually 3/32" (2.5mm).
>
> You'll be struggling with a commercial sized injector on such a small boiler.
The smallest available at the moment is 12oz which will soon knock the boiler
pressure down to zero. Even one of my 8oz ones might be a bit much!
>
> John
>
>
> --- In halfinchlivesteamforum@..., "myfordmatt" <matt@> wrote:
> >
> > Hi everyone
> >
> > I've just joined, and I'm looking for some advice. I'm currently building a
5" Pansy, but I quite fancy making its little sister Pansyette.
> >
> > Three questions:
> >
> > 1) I have all the Pansy ME articles, which include some advice and drawings
on the motion work, cylinders and boiler in 2½"-scale. Is there any more
documentation out there? (I couldn't find anything at The National 2½ Inch Gauge
Association website).
> >
> > 2) I feel reasonably happy about fabricating most of the castings, but not
the wheels - is there a close match I could use?
> >
> > 3) Which bits should I avoid simply halving in dimensions? – injectors for
example.
> >
> > All advice welcomed!
> >
> > Cheers
> >
> > Matt
> >
>