1) Oiling your engine (click here)
2) Sight glass seal replacement (click here)
- Jensen porthole type (newer style)
- Jensen external type (older style)
- Empire cast iron engine type (only style!)
3) Fixing stripped boiler threads under a Jensen external sight glass (click here)
4) Fixing a leaking Empire "In Stack" pressure valve (click here)
5) Securing loose chimneys (click here)
6) Operating electrically heated engines (click here)
7) Speed control for electrically heated engines (click here)
8) Venting paint, stripper, Esbit and denatured alcohol (Meths) fumes OUT of the house (click here)
9) Getting a Jensen 50/51 feedwater pump to operate reliably (click here)
10) Jensen blanket heater replacement and boiler strap re-riveting (click here)
11) Fixing a leaking or broken cylinder-steam chest solder joint (click here)
12) Fixing a cracked Jensen cylinder wall (click here)
13) Building a DC generator from a stepper motor (click here)
14) Fixing a Jensen Model #15 generator with little or no light output (click here)
15) How to properly package steam engines to survive shipping (click here)
16) Repairing the heating element on an Empire B-31 Vertical engine (click here)
17) A standalone boiler for running small to midsize "orphan" engines (click here)
18) Safety Check for New (old) electrically heated steam engines (click here)
To get the oils where I want them and not drooling all over the place,
I use a needle tip clock oiler, something I found on eBay just by searching on those words. They are perfect, cost just a few dollars and hold several ounces of oil. You might have to buy them WITH clock oil, but I just dumped that into a can we keep in the kitchen for oiling little things around the house.
Get two such oilers, one for each type of oil. An example oiler full of Green Velvet Steam Oil is to the left. I'm told empty printer cartridge refilling bottles are similar to these and work just as well...free if you or someone you know refills their own printer cartridges.
For oscillators, I just squeeze a bit between the two surfaces that oscillate AND drip a bit in on the piston. If you are really committed, pull the piston out and coat the piston and cylinder walls with this oil. Any whistle handles or steam valves that contact steam can also be oiled with a bit of this.
For slide valve type engines as many of the Jensen's are, you can squeeze a bit in the exhaust port of the engine and turn the flywheel so as to suck it into the cylinder/piston area. You can also squirt a bit into and onto the exposed inside cylinder walls when the piston is fully into the cylinder. On an Empire, enough of the piston comes out of the cylinder walls you can drop a bit on the end that shows.
For more sophisticated engines with built in lubricators, just take the needle part off for a moment and squirt a larger quantity of the steam oil into the lubricator and replace the cap.
The Pin, bearing and journal oil just goes everywhere else something moves and is contacting another surface...such as axles into their journals (supports), connecting rods where they meet the flywheel or eccentric.
DON'T: use too much of either oil or you will find the engine slings it all over ...experience and cleanup required after a run are a good guide
DON'T: squirt any oil into the boiler itself...it will turn to a tar ball in the bottom and could gum up the steam outlet, sight glass or both.
Then slide the two threaded nuts
to the center of the glass tubing with threads facing both ends. If your original glass tube is still intact, you can re-use it by
cleaning out the crud inside with a snipped off Q tip, moistened with
Windex or other household cleaner.
Once both ends of the glass
are in the sight glass blocks, carefully
screw in the threaded nuts so
they compress the slice of silicone tubing. I
hold the square block with one crescent wrench and tighten the
small threaded nut with a second , it works without damaging the
metal.If your Empire pressure valve is leaking around the bottom
exterior or bubbling up inside, the following should fix the problems:
a) Clean mating surface of stack with engine...there should be a
rubber/fiber gasket bonded to stack metaland about size of a
nickel. IF it is gone, you canfind an O ring of rubber/neoprene
in the plumbing section of most hardware stores. If gasket is OK,
but cruddy, just clean original carefully. You know if this gasket
is your problem if steam/water leaks out from the junction of stack
and boiler vs. INSIDE thestack.
b) Most likely source of leakage is the spring valve
itself inside the stack. You know this is happening if
steam/water is bubbling up inside the stack when
running. Disassemble using long bladed flat
screwdriver inside the stack and small wrench/crescent
wrench on little nuts that stick out the bottom of
stack and provide back tension on screw against spring
pressure. Mine had two nuts, so I had to fiddle with
a flat wrench on inner one/crescent on outer. Once
nuts are removed, spring and screw come out easily.
If you don't have two nuts, suggest you get a second
one as one locks the other in place so it doesn't end
up INSIDE your boiler some day.
c) Clean screw, nuts and spring with a bit of vinegar
if limed up, otherwise a dremel rotary brush does a
nice job of spiffing them up. Clean the inside
surface of stack base where screw head (with gasket)
makes contact.
d) Mine leaked primarily because the screw's gasket
that lies between head and stack base was almost
gone...I cleaned remnants off completely with razor
blade and replaced it with a 1/16" slice of blue
silicone rubber tubing it makes a perfect gasket for
the Empire stack (and the two glass seals on Jensen
external sights). This silicone tubing is sold in hobby
shops as model airplane fuel tubing. A small piece will
make dozens of sliced gaskets.
e) Stretch the valve spring a bit...mine was brass and
I stretched it about 1/3 longer than original to give
it some additional back pressure on the screw
f) Reassemble the screw with gasket thru the hole in
base of stack (hemostat/forceps help here with lining
it up). Once screw is sticking thru the bottom of
stack, hold it inside with the screwdriver, add the
spring back on, then finger apply the 2 nuts
....tightening nuts down the screw enough to give some
spring pressure on the screw/gasket surface.
g) Should work like new...mine didn't leak a drop.
Just make sure there IS some ability of screw to rise
under excess steam pressure...ie: don't crank nuts
down too tight on screw and remove it's ability to
release pressure if needed.
Hope this helps...turned out to be about a 30 min
repair/clean/reassemble for me, but results were very
satisfactory. The following photo shows these key
parts as well as a whistle top...all available from Don
Stilson at the address listed earlier. Don's quality is tops.![]()

This
little jewel was inspired by steam friend Peter B. in Toronto as a way
to more fully enjoy electrically heated steam engines such as many
Jensens, Empires and others. It was Peter's idea, I just glitzed
the packaging up a bit.
The idea is very simple, you use a
dimmer switch to dim lights over the dining room table and elsewhere,
and a light filament works like a heating element. Sooooo,
take one light dimmer (not a fan dimmer) and a single style outlet and
mount them in a convenient box to protect you from the open electric
terminals, then plug your electrically heated steam engine into the
outlet. One caution.
Most dimmers of this type sold in the U.S. are rated at 600 Watts
Max. Just avoid plugging in something that would demand more than
that, it could fry the dimmer and ruin a good day. If you need a
higher capacity dimmer, a 1000 Watt version can be had online from
Aubuchon Hardware in the U.S., though for some reason this type costs
about $28 USD vs. just $4 USD for the 600 Watt version from
Walmart...external dimensions are the same.
Here are the nitty gritty details of how I wired up mine:
Juice Reducer Detail.doc
My
box components cost about $5 and came from WalMart's craft dept., the
cord came off a $6 power strip, the outlet and the dimmer switch from
Walmart again about $4 each. Grand total less than $20 and loads
of enjoyment for that.
To get the engine up to full steam, twist
the dimmer knob to full, THEN after the engine is running at full
speed, you can dial it down so that the heat output to the boiler is
just enough to keep it ticking over or any place in between. It's been called the "IndianaRog Juice Reducer" and the "Diminator"...but
whatever you call it, it can be built very inexpensively and increases
the range of speeds you can operate your engine at. I like to
think of it as the steamer's equivalent of a Lava Lamp...very soothing
to have an engine running in the background for as much as one
hour. Just don't forget it and run the boiler dry.
The following video is of my Empire B-30 running at a slow pace while plugged into the " Juice Reducer".
Click below to see an instant video via YouTube:

All
of the above activities used to take place in my basement workshop and
I could count the seconds before management (the wife) would start up
on how I was stinking up the house, turning my brain and lungs to mush
etc. etc. All of which was true I must admit.
Well, in
January 2006 I opted to build my way out of this problem for good (no,
a divorce was not in my plans). Instead I built a
fume/chemical/paint smell/Esbit and Alcohol smell extraction hood to
vent the smells outside much like they use in chemistry labs. WHY
I didn't do this years earlier I don't know, but with the house closed
up for winter, my restoration activity had crawled to a stop and a
solution was needed fast.
Behold:
IndianaRog's Fume Extraction Hood for the home workshop.
Built into some shelves I already had installed, the key expense
was an extraction fan (300 CFM explosion proof squirrel cage type) , a
few pieces of plexiglass, some lights, a speed control switch and some
vent pipe. In total I probably have $200 tied up in this and it's
worth every cent.
First picture:
Finished hood with front up/down sliding
door in down position. You are looking thru a plexiglass panel at
the lighted insides. The exhaust fan is located center-rear of
the hood's ceiling.
All seams except front door were caulked with
silicone bathtub caulk to keep air infiltration flowing from front to
top rear exhaust fan. In current practice I have the shelf over
the hood filled with storage boxes, but I am keen to leave air openings
such that the fan doesn't get too hot when running. After 12
hours of continous running I can easily hold my hand on the fan motor,
so I have avoided heat buildup.
Second Picture:
Front
up/down sliding door in the up position, held there by two 2.5 pound
window weights. "Door" rides on sliding screen door hardware traveling
up and down a piece of aluminum angle stock. To the left and
right are plexiglass panels with 75 watt flourescent fixtures outside
the fumey area (important to avoid explosions !).
The white cylindrical thing in the rear is a newpaper end roll purchased for $4 from our local newspaper. It's suspended by a closet rod
and feeds a continous sheet of paper as a tear off drop cloth for
painting. I just roll the paper back on roller when using hood to
operate an Esbit or alcohol fired engine. Variable speed switch is just
to the left to control fan speed.
Third Picture:
The
fan used is called a squirrel cage type and is deemed explosion
proof. This is done by isolating the "cage" inside the flow of
exhaust and keeping the motor with it's inherent spark OUTSIDE the
exhaust.
IF you build one of these things, do not cut corners and install a fan that basically pulls the air thru the motor. Spray paint fumes I am told are very explosive. Nuff said. I went a bit overboard on the estimated exhaust volume needed at 300 CFM.
My
hood's interior is 5 feet across the front, 3 feet deep and 2 feet tall
approx., which totals about 30 cubic feet of volume which my fan will
exhaust 10 times in one minute running at full volume. I use full
volume
while actively spray painting but reduce it to about 25% of that for
overnite paint curing and while running engines on Esbit or
Alcohol. These levels keep my house fume free even sitting 2 feet
in front of it.
Fourth Picture:
Up,
up and away go the fumes via some PVC sewer pipe. I ran the pipe
up above the basement block wall where it was easier to cut a hole in
the wood and siding at the point where the pipe passes thru the house
wall. All joints were sealed with silicone caulk to keep the
noxious stuff inside the pipes and not blowing back into the room.
Fifth picture:

Fifth and Last Picture:





Dang, been there and glad to say I found a fix. Someone might have suggested this to me and if so, a thousand apologies, but I don't know where I picked this up...just know it works...so here goes:
Here is the fix for cracked Jensen cylinders, if crack is not too terribly big:
1) run your engine WITHOUT cylinder oil for a run...letting steam purge the crack. This won't hurt engine as water functions as a lubricant too
2) when you have adequately cleansed the crack from inside out...pull piston to the end furthest away from crack
3) while still hot, layer the crack with medium consistency CA glue (cyoacranalate or super glue)....I use it in RC plane work and found the medium stuff worked best...thin ran all over, thick wouldn't penetrate the crack...but medium worked it's way INTO the crack.
4) if done while hot, the cooling metal actually draws the CA glue into the crack sealing it...just be sure piston is as far away as possible so as to NOT glue it in place from the inside out.
5)
fire up the engine again WITHOUT cylinder oil and check for leaks...if
it is tight, congrats...if not, repeat same treatment. Never
needed more than two treatments on the worst of cracks and some have
lasted 3 years of regularly firing them up without leaks...the stuff is
almost better than solder because it will flow into the tiniest crevice.
6)
clean any residual CA off the nickel plated cylinder...I use an Exacto
blade carefully followed by polishing with SimiChrome polish.
Hope this helps...if you can't find medium CA at Walmart, try www. towerhobbies.com an online RC plane supply, they sell the three consistencies.


Several things can be done to UP the light output from a Jensen #15 cast iron or aluminum based AC generator
Timeout for a check of
your progress...lash it up to a steam engine (or spin the pulley with a
Dremel tool and it's rotary wire brush...good quick tool for such
checks). If it lights properly, stop...don't mess with it any
further. If no change, go on to #4
5) Remove the wire from the nut beneath, remove
the bulb and push wire from the base up and out the belled lamp top.
Examine wire for any breaks, especially where it meets the bulb via a soldered on
fiber disk circle. It should be soldered such that the
fine wires are splayed in a circle with a dab of solder in the center of the fiber disk...intent
is for the pos. tip of the bulb to contact this dab of solder, but of none of
the wire to contact the nickel plated walls of the bell. If need be,
remove the original wire and replace with new...I have used #22 wire from Radio Shack
with good results.
Timeout for another
check to see if things are working now...if not, go on to #6
FOR OPTIMUM
SHIPPING SURVIVAL, ASK SELLERS TO DO THE FOLLOWING:
1) Drain all water from boiler by taking out whistle/pressure valve on
top and shaking it upside down...spin flywheels to eject any water in the lines
or cylinder. Remove chimney, whistle, fuel tray (or cord) and pressure valve
from engine and package them wrapped separately in their own bag, to
avoid potential of poking thru boxes and also scratching engine or vice
versa...place them in with the engine in it's original box if one comes with it.
2) place engine in it's original box with loose parts in a bag, (or use
a proper sized box if original is gone)...now fill loose space within the box
with foam noodles/peanuts or balled up bubble wrap so this box won't collapse.
3) place this box inside a larger outer shipper box nested in more foam
noodles. This way the outer shipper takes the rough handling in transit and NOT
the inner box and contents. Be sure there is a good layer of foam noodles
surrounding the inner box so it doesn't move within the shipper. Seal the outer
shipper box well with packing tape on top seam, bottom seam and all flap edges.
Include sender address and shipper address on the outer box top.
---------------------------------------------------------
Offer to pay the seller a bit more for the packaging steps listed
above, noting it always makes for a happy buyer and seller and reduces
likelyhood of damage and returns...this last bit puts the seller on
notice that if you are not happy with condition of item due to poor packaging,
you will put the burden back on him.
Pay with PayPal whenever possible as it gives you an option to get your
money back for damaged goods...takes them 4-6 weeks to process a claim, but the
one time I did make such a claim I got all my bid money back (but had to pay
return shipping to send item back).
Try to avoid paying for insurance if possible...it
is almost worthless and very difficult to file claims half a world away. Here
in the
I have sent instructions like 1-3 above to at least 10 sellers in the
past 2 years. I offered an extra $10 USD (=5 GBP) to offset any extra packaging
cost. NO seller would accept my offer of this extra money and ALL complied with
stellar packaging. I think most sellers are happy to do it right...they just
often need to be told what right is !!!
Repairing the Heating Element on an Empire B31 Toy Steam Engine
by Erik Quackenbush
***** I DO NOT CLAIM TO BE COMPETENT. THESE STEPS WORKED FOR ME, BUT ELECTRICITY IS INHERENTLY DANGEROUS, SO I CLAIM NO LIABILITY FOR INJURIES RESULTING FROM ATTEMPTING THIS. WE ALL PLAY WITH HIGH PRESSURE STEAM TOYS, SO I HOPE WE HAVE COMMON SENSE. PLEASE USE IT.*****
If your heating element isn't working, it's because the electricity isn't successfully flowing from one side of the plug to the other. To fix this problem, you need to keep two things in mind. In order for the heating element to heat, the electricity running through the element needs to be able to make a continuous loop, and the electricity needs to be contained to this loop. It's simpler than it seems.

Diagram A is more or less what you should see when you remove the bottom cover of your engine. The heating element is a circle pressed up against the inside of the boiler. In Diagram B, we see that in order to contain the electricity flowing through the element, there are thin layers of mica stone to insulate it. These layers of mica, while stone, are flexible, so they can be bent into the circle shape needed. Holding all this to the boiler are two metal braces held in place with wedge shaped pins (see Diagram B and Step 1).
There are two metal leads which come out of this assembled circle. Though not shown in the diagram, these leads should also be sandwiched in between two layers of mica as well for insulation. These leads attach to two nuts. These nuts hold the leads to a screw post (Diagram C now), which theoretically allows the electricity coming from the plug to enter the element. The insulators on this assembly keep the electricity from leaving the path and going into the base of the engine.
The element itself (Diagram D) is composed of a filament (think of your normal light bulb. Electricity enters the wire loop in the light bulb, and the wire lights up, and also heats up before leaving the other side. Same principle here, only there's no light being created, just lots of heat.), and a layer of mica to wrap the filament around. The metal leads attach at each end of the filament.
So, following the path of the electricity, the electricity enters one side of the plug, goes down the screw post to the heating element lead, through the filament, up the other lead, through the other screw post, and out the other side of the plug. That's the path. We need to make sure the electricity is able to follow that path, and only that path.
Ok, now it's time to try and fix the darn thing.
The first possible problem is easy to discover. If you plug the steam engine in, and you touch any part of the engine other than the plug and get shocked, you have a short. That means the electricity has found a way to leave the path it's supposed to follow. The way to fix this is similar to how to fix the usual problem, which is that the electrical path has been broken somewhere.
I found the path in my engine broken in 3 different locations, so I'll take you through a few steps, which are what I went through to repair my engine.
Number 1: Sand or polish the plugs. If the electricity isn't directly touching metal to metal, if there's crud in the way, the electricity won't even enter the path. That was the first problem I found, so I fixed that by cleaning the plugs with some fine grit sandpaper. Easy.
Number 2: If it's still not working, you should check the heating element leads (Diagram C). Remove nut 3 from the assembly, and see if the leads are intact and making good contact with nuts 2 and 3. Again, sand or polish all surfaces to remove grime. I found that one of my leads was broken. Since I didn't have the capacity to create a new one, I just made sure when I reassembled it, I took the remaining stub of the lead and had it firmly tightened between nuts 2 and 3 to ensure that the metal path stayed continuous.
*****NOTE: ALWAYS KEEP IN MIND THAT THE ELECTRICAL PATH NEEDS TO STAY NOT ONLY CONTINUOUS, BUT CONTAINED. PAY ATTENTION TO WHERE AND HOW ALL INSULATING MICA LAYERS ARE USED, AND PUT THEM BACK IN THEIR ORIGINAL LOCATIONS WHEN YOU REASSEMBLE. ANY CONTACT OF ANY PART OF THE ELECTRICAL PATH WITH A PIECE OF METAL NOT INVOLVED WITH THE PATH WILL CAUSE A SHORT, AND YOU'LL HAVE TO TAKE THE WHOLE THING APART AGAIN TO FIGURE OUT WHERE THE SHORT IS OCCURING. CONTAINMENT CONTAINMENT CONTAINMENT!*****
Ok, so now we've checked all problems down to the element itself. Like I said, the element works a lot like a light bulb, so after too long, it burns out. What this means is that part of the filament weakens and breaks. In order to make the electrical path continuous, we have to repair this break. Time to remove the element.
In Step 1 in the diagram, you see that the first thing required is to remove the pins holding the metal braces in place. They're old and probably rusty, but they're just held in with friction, so a little work with a pair of pliers, maybe some WD-40, and you should be able to wiggle them out. Patience. After removing the pins, you can take out the braces.
Step 2 in the diagram is to begin to remove the layers. Be very careful with the mica when removing these layers. It's just thin stone and fairly brittle, so be gentle and slow. Remove the mica layers to expose the element, then remove the element itself. Again, pay attention to how the mica layers are set up. Note that the insulating layers of mica are taller than the element itself. This keeps the filament from contacting the boiler itself, or anything else metal (both of which would cause a short).
After removing the element, which should now look kind of like Diagram D, check the element over for any breaks. Mine looked a lot like Step 3. I had a simple break near the end of a loop in the element. Once you've located the problem, it's time to fix it.
There are probably a thousand way to fix this. Here's how I did it. I found a little bit of metal (part of a clock spring in my case). I don't know what metals are proper or not for this, but it will have to endure high temperatures, and it needs to be conductive. Clock spring steel seemed like a good choice to me. Whatever you use, make sure it's clean so it will have a good contact. It also needs to be flat, so it can be compressed back in with the rest of the layers by the metal braces. I took this piece of metal and folded it in half, then bent it around and pinched it tight over the break with a pair of pliers (see Step 4). One thing to make sure of is that the piece of metal only bridges the single part of the filament you need bridging. If you bridge more than this, the electricity will follow the path of least resistance (your fix), and part of the filament wouldn't heat up. This will lead to an inefficient heating element. It will still work, but it will be slower to boil the water.
Once this is done, start reassembly. Use your notes or photos to make sure the mica layers go back on in the right locations, and keep an eye out to make sure you're containing the electrical path with the mica. Once it's all back in, put the metal braces back into place and tap the pins back in (Step 1 reversed). Make sure that the leads are lined up with the screw posts as well so you can reconnect those.
When you think you've got a continuous and contained electrical path, put the cover plate back on and try firing it up again. Once plugged in, check the base and boiler to make sure they haven't become charged (Do not grab the boiler. If you're going to do a hand check, always check for electricity with the back of your hand). If they are you have a short, and need to disassemble to find out where the insulation isn't insulating.
