Was there any real difference in basic design between a Mason Bogie and
a Single Fairlie - or is a Fairlie by definition a double-ended device?
Just curious.
Farlies were made in both double and single versions and are known as
such.
It clearly raises the possibilty that Roundhouse may be
Roundhouse insists that it's locos run on small radius track. I suspect that
is why they cheated on the Forney design.
Phil
Was there any real difference in basic design between a Mason Bogie and
a Single Fairlie - or is a Fairlie by definition a double-ended device?
Just curious.
*Fox clasps his paws over his ears and goes running from the room
screaming about some odd pain between the ears...!*
Check the Masterclass '02 items on mylargescale.com for lots of info on
Mason Bogies. Unless a lot of people are really off base the Bogies are
single Fairlies with a few
Earle came over last weekend with his new Roundhouse Forney, and was delighted that it
performed well, steaming nicely and pulling my freight.
However, I was interested to see that it is not actually a Forney - the front chassis
swivels - so it is a Single Fairlie, or perhaps a Mason Bogie?
Pete,
If I recall correctly from my reading, a Mason Bogie also has one
high-pressure and one low-pressure cylinder in compound, and that is one
basis for the Mason Bogie patent.
Steve
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 12, 2002
I believe it's a single Fairlie. Mason's design also included a bizarre (my
opinion only) valve gear arrangement that hung over the boiler on a yoke, with
reach rods dropping down to the cylinder level. The Mason Bogie is a type of
single Fairlie, but I don't think all single Fairlies can be
The Mason Bogie is a type of
single Fairlie, but I don't think all single Fairlies can be equated to
Mason
Bogies due to peculiarities like that.
Vance,
I think you've stated the Mason Bogey question fairly, but to an old Fogey
it seems that a Fairlie is not a Phoney Bogey but a fairly funny
Hi Pete, It is I, Earle.
Underneath the front of the Forney what they have done is attach the
frame with bogies, cylinders, etc. to the bottom of the boiler with a pivot
about 2/3 the way back. The valve gear runs on twin eccentrics inside the
frame and there is a reversing piston setup at
