Scot's
"BAGRS BASIC" Project Engine
The
"Bagger Shayish"
Page
2
Ok,
all new plan..
What
else could be built with the "T-Boiler" idea?
The
heritage boiler MUST stay vertical..thats a given..so to build any kind
of "traditional looking" steam locomotive,
it
must be some sort of T-boiler right?
right.
so..what
kind of locomotives had t-boilers? Shays!
The
best, most in-depth resource on the internet about Shay locomotives is
www.shaylocomotives.com
So
I started to check out photos there to find some interesting engines..
found
some interesting early T-boiler photos..but I just kept being drawn back
to that logo on the main page!
that
little Shay in the logo for shaylocomotives.com is absolutely perfect!
So
I designed my new engine based on the proportions of that engine..(I dont
even know what prototype
shay
it is based on..if anyone knows please let me know!)
logo
and drawing © www.shaylocomotives.com
used by permission.
Obviously
this isnt going to be a prototypically accurate Shay!
technically
it isnt even going to be a Shay at all!
its
just going to be "Shayish"..(which brings me to the name of my engine!)
BAGRS
is the acronym for the "Bay Area Garden
Railway Society"
It
was Mike Martin, a BAGRS member, who first developed this idea of using
the Midwest steam engine
kit
to make a logging engine! and the locomotives of this type are all called
"BAGRS Basic" or "BAGRS Project"
engines..
everyone I have talked to pronounces "BAGRS" as "Baggers"...
"im
building a Baggers engine"
So,
since my engine is also based on the BAGRS Basic idea..but modified into
a Shay-looking type locomotive..
the
name "Bagger Shayish" just came to me..then got stuck in my head! So now
its the name of my engine..
"Bagger"
because its based on the BAGRS..
and
"Shayish" because its Shayish! Shay-like..
Ok,
back to the design..
If
I offset the boiler to the left side, like a real Shay, I can mount the
engine and gears to the right side, in the same position
as
real Shay cylinders..im still going to use the chain-drive, and was originally
planning to power only one driver..but then
though..why
not both! just some extra gearing and chain will do the trick..and it will
look so cool having all
wheels
powered! ;)
Shorten
the whole engine..modify the trucks to one-axle each..widen the boiler
to the size of the midwest boiler,
tweak
the cab..and we get this groovy little thing!

I
like it!
That
drawing, and the next drawing, became my actual "plan"..all dimensions
on the actual model are based on
these
2 drawings..
I
drew up a plan, working out where the engine and all the gearing needs
to be..
The
size of the frame itself is 10.75" X 3" (not including the pilot..with
the pilots the total length is 11 and 5/8")
here it is full-size
Only
one potential "problem" with this design..the wheelbase is 7.25"
rather
long for fixed trucks..the wheels can not be allowed pivot with curved
track because of the chain drive and gears..
its
the same concept as the "stock" BAGRS..fixed wheels, just a longer wheelbase.
I
took 2 Bachman passenger car trucks..removed a wheelset on each one so
each truck had only one axel..
screwed
the trucks to a block of wood so the axels were 7.25" apart and ran the
block-car around some
8'
diameter curves..it ran ok! a little binding, but rolled pretty good..so
the minimum diameter of this machine is going to
be
8'...anything larger should be totally clear..I will build in as much side-to-side
slop as I can to help it on curves..
The
gearing is essentially going to be same as the stock BAGRS..same gear ratios
and same wheels..
the
only difference is I will be powering both axels..I hope the engine can
handle the added friction..we shall see!
I
am
willing to gamble on that! (unlike the John Bull concept) because if it
doesent work it will be a simple matter
to
just power one axel..If both axels powered, and rigid, does not work, I
will simply remove the chain to the front axel,
power
the real axel only, and then modify the front truck so it will pivot..that
would then be basically the same drive
train
as the stock BAGRS and would work fine..but I will only do that if I have
to..
The
Heritage steam engine kit came from Tower Hobbies.
And
the Drive train (gears & chain), the roundhouse lubricator, the wheels,
and
other bits of brass hardware and fasteners came from Sulpher
Springs.
its
thier "KIT-BPE"..designed specially for the Bagrs Project Engine.
here
are (almost) all the parts!
And
construction begins!
The
trucks were scratch-built from brass and wood..I had no plan to follow,
so I drew out
a
design on graph paper, took a long brass strip, marked the bend points
and drilled the holes,
then
just bent it by hand using only my fingers and pliers! they could have
been a little
neater
if I had some kind of proper metal-bending tool, but this worked fine..
basically
the only tools for this entire project are pliers and my new drill press!
the
axel journals are from Ozark Miniatures..
May
4th..coming along!
The
tender is done, and I have installed the lubricator.
Scot Lawrence. Page started March 03, 2003. sscotsman@yahoo.com