I just use a gas filler valve from Wee Bee Loco works that screws onto the mix gas fuel from Walmart.  Living in Indiana, its just simplier to run the propane/butane mix year round and only have one type of fuel adapter nozzle. Our local Walmart stocks the mix fuel in two sizes, a $5 can and a taller $10 can.  Works great in every gas fired model that I and my friend Steve has, from a vintage Merlin Mayflower, Pearse, Roundhouse, Accucraft and my Bowande gauge one engine.  Just my 2 cents.    Mikie

[Edit] I was asked about an old pic of my gas filler rig, and found all the photos in this had disappeared when I accidentally deleted my 2017 directory.  I put most of them back.
I added this to finish off the story

I found the tube inside the metal casing was ordinary plastic, and I use a motorbike fuel pipe clamp to hold the Accucraft tube in place.

Must be my age - was in my late teens in the early 1960s. When I see the word "Drag," my mind jumps to the old "hot car" songs of that day, and I start humming "Burn up that quarter mile!" Inertia doesn't do it, but Drag does!

Sorry, David Meashey

This little beast turned up today, from Peter K's estate. It's essentially a flywheel car that makes a live steam loco work harder to accelerate or slow down, thus simulating the interia of a real train.

Those look like solid steel flywheels and the ends of the 'box' are solid cast iron. The thing weighs a ton - intentionally to make sure the wheels grip and it doesn't just get dragged. One flywheel was disconnected (the gear was moved on the shaft so it didn't get driven.) That may be a way of making it work with only 1/2 the inertia!

I have no idea who made it but it is a nice job. I will be taking it to Jerry's SC&M to see if (a) his track can handle the weight and (b) whether it works. I have a little english train of Thomas stuff with a 'Countess' to pull it. If it works, I'll have to find a Thomas box van to hide the internals.

We once thought about putting safety nets around the modules.

One of my very expensive passenger cars hit the concrete floor once.

Eric Mueller said:

Missed the "Mad Max Road Warrior"  style steam driven, side-mounted battering rams on that Ruby!

Eric,

They did not have side-mounted battering rams, the Ruby driver just cleared the condensate from the cylinders and blew that diesel away.

Steam Rules !!!!!

Missed the "Mad Max Road Warrior"  style steam driven, side-mounted battering rams on that Ruby!

Well how bad is the damage??? It couldn’t have been good , unless there were pillows below the track

will you be selling a USA Trains SD-70 UP Katy heritage unit with some “wear” soon? 

That diesel almost went out the second story window!

That will teach the dismal to try to pass a steam loco!

Looks like someone forgot to set the crossover switch back to the main.

Final score Ruby 1, Diesel 0.

I've had the Wiha set for years and found there is a couple of sizes Acra uses that weren't in the set. 

Even with the paint cleaned off. 

The paint on fasteners makes the proper size tool feel too small. So you go to the first size larger that fits, but it is actually too large and feels that it will round out the fastener. Actually it is rounding out the paint! If you get the paint off, the proper size tool will fit. IMHO

I did order the pouch also.

It's nice. Get the pouch!  But as TAC suspected,  Accucraft sizes are approximate! I was removing the headlamp and bracket form an LS 2 Cyl Shay. The Metric tool did the job, but it didn't feel snug on the fastener. It felt like it would be very easy to round it if it needed to be torqued.

I just ordered that set too.

My Ruby is looking good and works good too!

I believe Bob Clark has one or two left and he was discounting off the listed price a bit.  I was going for one of them but a slight shortfall led to picking this one up second hand instead.  But I do hope to get some of his correct passenger car kits to pull with 382 once things settle down at work.  It was a stretch and took the selling one of my live steamers and some prewar Lionel to fund the 382.   These are alot of engine for the money packing proper valve gear, whistle, axle pump w/bypass along with hand pump in the tender.   Bowande is out to make themselves the next Aster in my opinion.      Mike

I believe Bob Clark has one or two left and he was discounting off the listed price a bit.  I was going for one of them but a slight shortfall led to picking this one up second hand instead.  But I do hope to get some of his correct passenger car kits to pull with 382 once things settle down at work.  It was a stretch and took the selling one of my live steamers and some prewar Lionel to fund the 382.   These are alot of engine for the money packing proper valve gear, whistle, axle pump w/bypass along with hand pump in the tender.   Bowande is out to make themselves the next Aster in my opinion.      Mike

Eric Schade said:

That is a beauty mike i have been giving that engine the old eyeball for a while now, even put in a few bids at Cabin Fever for one.

And how would you convert it to a 7/8ths scale loco?