Keith's Steam Locomotive Page
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Steam Models & Accessories
My hobby for many years has been building & running miniature coal fired steam locomotives in 71/4 inch gauge. Although never originally trained as an engineer, I just picked it up by reducing loads of metal to swarf!.My first model engineering project was a "Victoria" horizontal mill engine which runs very well. A succession of model steam locomotive re-builds followed in 5 inch gauge, but working on other people's failed projects ie: part finished models, is more difficult sometimes than building from scratch! ... Although a Stanier "Black Five" in 71/4 gauge, which I bought part-finished, built into a fine locomotive. unfortunately I sold it to part-finance the property I have now. Currently my workshop is quite well equipped, with a brilliant old "Smart & Brown" British lathe from the early 60's. This was bought from a local tool dealer quite cheaply .... a bargain .... It was in a bit of a state, having come out of a school for kids with learning difficulties, someone had thrown away all the gearbox changewheels to disable the automatic feeds.... because of this, the gears were in first class condition, although a bit rusty. A couple of months were spent rebuilding this, & the only new parts used, apart from the paint, were 2 leadscrew bearings & a toothed belt for the gearbox drive, to replace the lost changewheels. It's quite large, having the most substantial bed for a 6 inch centre lathe I've ever seen! I bought a new 3 jaw chuck & collett chuck to fit it. Completing the renovation, I removed the old 2HP 3 phase motor, & fitted a single phase 1 HP motor to it. It runs really quietly & removes metal at an alarming rate!!!!
I also have an old Taiwanese milling machine which is a bit naff, but mills perfectly, in fact I break less milling cutters on this than on a big Senior M1 I used to have. I fitted a home made Power Traverse, which one day I will wire up!!!
A grinder/polisher, 4inch belt sander,3 foot guillotine, large vice & hand tools complete the set-up. With this workshop, I also manufacture parts when needed for the 24 track Soundcraft recorders at the studio. This was the original plan!
I recently bought a Boxford AUD lathe with collett chuck....this will be useful for small part manufacture while the big machine does long, heavy slow cuts.....two lathes at once....!!
Around my home runs 400 feet of railway track completed in 1995 by myself & friends... on this I run an 0-4-0 tank engine with tender...............A long flat passenger truck allows mobile sunbathing in summer.....another one is under currently under construction.
I built the engine & tender in about six months (not the best engineer, but one of the fastest!)
The drawings were L.B.S.C. 71/4 "Tich" drawings (Kennion Bros.)....
It is however much modified, having ball races everywhere except the big-ends & con-rods (which are bushed with oilite)...I found some 1/4/inch O/D ball races which allow use in all places where there are pins & bushes normally. This engine has done a lot of running around my garden at a great rate of knots!!! Apart from the big-ends & con-rods, wear isn't evident anywhere else.
A FEW EXTRA NOTES ABOUT MY "TICH" LOCOMOTIVE
I BUILT MY TICH (OBSESSIVELY) IN ABOUT 6 OR 7 MONTHS OF SPARE TIME NOT INCLUDING THE BOILER WHICH WAS SILVER SOLDERED TOGETHER BY A FRIEND OF MINE, MR. RANDY BLACKBURN (WHO IS GOOD AT COPPERSMITHING & JUST ABOUT EVERY ASPECT OF MODEL ENGINEERING). THE LOCOMOTIVE HAS BALLRACES ON ALL THE RODS EXCEPT THE COUPLING RODS & BIG ENDS.
IF YOU ARE BUILDING ONE, BORE THE CYLINDERS OUT, TO 1.5 INCHES, THE POWER OUTPUT IS MUCH BETTER. I USED "SWEETPEA" CAST IRON CYLINDERS & VALVE CHESTS, WITH SIMPLEX SLIDE VALVE CASTINGS, ALL FROM "BLACKGATES" ENGINEERING. ALSO I USED 1/4 INCH STAINLESS STEEL FOR THE VALVE RODS & 5/16 INCH FOR THE PISTON RODS.
THE 3/16 INCH DIAMETER RODS, AS PER PLAN, BENT IN NO TIME.ON THE PLAN (KENNION BROTHERS) THE REVERSING LEVER IS THE WRONG WAY ROUND. I ALTERED THIS. THE BALL RACES THAT I USED FOR THE RODS, ARE 1/4 INCH O/D & 1/8 INCH INTERNAL. THE ARE FINE & SHOW NO SIGN OF WEAR YET. ON THE AXLEBOXES I USED 2 BALL RACES (NOT SELF-ALIGNING TYPE) IN EACH BOX, THIS WAS A BIT OVER THE TOP, BUT AGAIN NO WEAR IS EVIDENT YET. THE ONLY WEAR IS ON THE CROSSHEAD SHIMS + COUPLING RODS & BIG ENDS, WHICH ARE OILITE BUSHED, USING COMMERCIAL "OILITE" BUSHES WHICH ARE EASILY REPLACED.
THE SUM TOTAL OF ALL THE ABOVE MODIFICATIONS IS A SMALL & POWERFUL ENGINE WHICH SHOWS NO SIGN OF WEAR IN THE VALVE GEAR, EVEN AFTER A FEW YEARS RUNNING. I ONCE BOUGHT A PART-FINISHED 71/4 GAUGE TICH & FINISHED IT, BUT AS IT WAS AS PER PLAN, IT WAS VERY POOR RUNNER.
MY CURRENT PROJECT, A 7 1/4 INCH GAUGE "SWEET WILLIAM" 0-4-0 WILL HAVE THE SAME TREATMENT AS DESCRIBED ABOVE.
Most miniature steam locomotives are built & run almost in the same way as full size & so they wear out to scale .....fast!..... even the amount of ash in the smokebox after a long run is to scale!
I am currently working on a new engine...."Sweet William"....... Plans & all castings from Blackgates Engineering,
I must thank them for all their help, advice & cutting of odd sizes of metal for me over the years. Their castings are always of very high quality, no problems have been encountered at all.Their service is highly recommended. Phillip's son - James, is a good Red Alert player too!.......
This engine is narrow gauge, so it's big (Built like a tank) in 71/4 gauge...but very easy to build ....nearly ready to run on air after an incredibly short time. ...everything is big so you can machine more heavily without breaking anything (Sometimes!!?!!) This Loco also uses ball races where possible, the split bush con-rods & big-ends are used to clamp onto oilite bushes, which are quickly replaceable, & run on case hardened crankpins. These are a bit fiddly to make & set up, but the ease of mainainance later is worth it.
Part of me still wants to be an engine driver, so who knows...one day I might set up a commercial light railway...?
At this moment though, it's not far off running on compressed air! no boiler as yet. Boilers are the single most expensive bit....the copper alone costs a fortune, the firebox outer wrapper is 1/4 of an inch thick!
By the time the boiler is made, the engine will be well run-in on air. I have an old dental compressor, which runs very quietly, as it's fully enclosed, so I can listen to the engine's mechanicical noise, this is useful for fine adjustment of the motion. Usually when first running on air, the pressure needed to start is 30 - 40 psi.... but after a short while, the engine should tick over on 8 - 10 psi ....Normally I blank off one side of the steam (or air) inlet,feeding air to one side only, to get the valve settings spot-on one side at a time. When both sides work together, an efficient ....or reasonably efficient machine results. Steam locomotives, even miniature ones are not efficient machines at all....most of the energy goes up the chimney as exhaust heat.
If you are reading this & have a 71/4 gauge tank engine....
E-mail me & come for a run! (track minimum radius is about 25 feet in places, so no long engines with loads of wheels)
The following extract is from a magazine article written by John Bolt & myself:
Once I built a Railroad (and made it run)
Initially I enlisted the help of a music student friend (Chris Taylor) during the summer holidays to prepare the foundation of the track. Over the next few weeks, armed with only a spade and wheelbarrow, he visibly lost weight. Especially as he dug the cutting round the back of the house. At a rough estimate, he must have moved fifty tons of rock, stone and soil, not bad for a trombone player!
His other part-time job in a garden centre made it slightly cheaper to get the weed barrier plastic sheeting, which was to go under the ballast. His staff discount was to come in handy, as we were going to need a lot .. Four hundred feet of this material was laid in position, and then covered with twenty tons of gravel ballast. The weeds still grow in the ballast, but are easily pulled out. Many miles were covered levelling and trampling the gravel into place. I did not see it as being necessary to hire a vibrating roller, as many feet seemed to do the same job.
Next, the sleepers! On initially pricing these from specialist suppliers, the cost seemed prohibitive, the solution was to buy tanalised 4in. x 1 in. timber from a local fencing manufacturer, who also cut them to the required length of 13 inches and treated the cut ends. A top tip for sleeper maintenance is to give them an annual application of used diesel engine oil from my old Landrover.
When the sleepers were laid in position, the railway was beginning to take shape. Now for the track. Once again specialist suppliers prices, especially aluminium, were out of the reach of my pocket. So the type of construction chosen was the same as W.R.S.L.S. club track, which is 1in.x ½ in. flat mild steel bar for the rails, with 1in. x 1/8in. flat mild steel bar, cut to 3in. lengths for the chairs. These were pre-drilled in a jig, and welded in place at 9 in. intervals on the rails. The welding was beyond my capabilities, I tried it once and only managed to weld things to the vice. So all welding was done by my friend John "electric glue gun" Bolt, whose photographs also illustrate this article.
We were lucky to have a long, and fairly level length of garden wall on which to weld the track together. The straight sections of track were constructed in their entirety on the wall, with cross ties welded in, using a track gauge after every third chair. The whole assembly was then screwed to the sleepers with stainless steel self-tapping screws. The straight sections were then placed in position, the full length down each side of the property. At this point it is worth mentioning that nowhere in the finished track did we use expansion joints, as these seemed to be pointless items of over engineering in this scale. All the sections were simply MIG welded together (all the way round) and cleaned up with an angle grinder. That was the easy part. In order to safely hurtle round the garden at a great rate of knots, super-elevation was built into the front curve. The geometry involved in this proved difficult as we didnt have the luxury of bending rollers, or any measuring equipment more sophisticated than a ruler! What we did have was a strange device borrowed from W.R.S.L.S., which is sort of a claw device with a hefty Allen bolt, this bends the track but must be used at 3in. intervals. Little and often is the secret to track bending using this method. Arms like Popeye developed after doing this for a while.
Now dont be misled into thinking that everything went smoothly and swiftly. Not only did work grind to a halt as I felt the need to run the engine after every section of track went down, but a fox ate Johns welding glove! All the kneeling and bending took its toll on Johns knees and back, but luckily one of my recording studio clients, who is a professional holistic healer, called in for some cassettes and gave John a therapeutic zap, therefore allowing him to get back to work on the railway.
The sleepers were laid roughly in position on the ballast, chairs and spreaders were welded to one track only on the wall, which was then bent into position on the sleepers. Then the second rail was slowly bent parallel to the first and welded to the spreaders using a 7 3/8in. track gauge which was also used while screwing the chairs to the sleepers. The chairs on the second rail were welded in situ, with the welding plant following round the track on the newly completed passenger truck chassis. This process was repeated for all the curves. To make the track interesting, a reverse curve was put in, this will also allow for a future siding, handily situated by the water tap in the front garden.
Work on the track in the back garden was slightly delayed due to the building of a York stone flagged patio, which fell under the general heading of "work on the house", and to show that I didnt spend all my time working on my hobby.
The final piece of track was laid across the drive in front of the garage/workshop. We had problems bending this as we laid it in the dark late one night. This section of track was then cemented in place in order for the car to run over it smoothly.
Once the foundations had been prepared, the actual construction of the track only took 100 hours! In the three years the track has been down, it has neither moved, distorted or sunk, and running is very smooth, derailments are few.
A handy feature of the property was the old oil fired central heating boiler room. Although this is part of the house, it is conveniently positioned to make an ideal engine shed. A section of track was made to run into the shed, over a two piece steel door. A set of points will be added one day, for now a board is used to get the engine to and from the shed road.
Since completion, many hours in steam around my garden has made the effort worthwhile.
The only problem now, I don't seem to have much spare time to play trains!!!!!
When time allows, I'll update this page from time to time.... Thanks for visiting the site....