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Member postings for Maurice

Here is a list of all the postings Maurice has made in our forums. Click on a thread name to jump to the thread.

Thread: Any plans for battery loco in 7 1/4" gauge?
21/07/2019 17:14:01

I echo Ron's comment about flangless wheels in the centre position. I have a picture in one of my books somewhere of a full size loco with them.

Maurice

Thread: How badly do I need a surface plate?
21/07/2019 17:09:05

I can recommend the use of a piece of plate (or float) glass as a surface plate. To avoid the possibility of it bending under load, or indeed to make it stronger, the advice used to be to bed it on a layer of pitch. This stuff always remains a liquid, albeit a very viscous one, and will flow out to support the glass right across its surface. If buying a piece from a glass dealer, then for a modest charge they can remove the sharp corners and polish the edges.

Maurice

Thread: Stuart No. 2 centrifugal pump - machining help needed
04/07/2019 02:01:06

A search through back issues of M.E. Should find a blow by blow description of the making of this pump. I sold a set of castings some years ago, along with the relevant issues of the magazine. Sorry I can't give any clue to the date.

Maurice

Thread: Blued metal cleading
18/06/2019 11:34:40

Nice engine Rik,and very nicely blued cleading. I have an S50 mill engine with blued steel cleading which gradually lost its colour with time (too much handling!). I polished off the remains of the blue, and reblued it in the same manner as you. I too was surprised how easy it was to get a satisfactory result.

Maurice.

18/06/2019 09:02:40

Some years ago I finished off a Stuart Turner number eight engine for a friend, and at about the same time I completed my Stuart steam feed pump. The last thing I did on each one was to fit the "blued steel" cleading. The material supplied is alloy sheet with a blue finish; presumably anodising. I recently saw the two model together, and something looked wrong. I then realised that the cleading has changed from blue to a pale sort of bronze colour. Neither model has been in strong light, and have been about twenty miles apart. Has anyone else had this happen with alloy sheet.? Fortunately I have a sheet of blued steel, actually made from steel, so I can readily replace it on both models, but I would like to know the cause. Is it just an age thing?

Maurice

Thread: sulphuric acid
14/06/2019 17:04:13

I am not recommending anything here, but years ago, every telephone exchange had lead acid batteries large enough to run the exchange for eight hours in the event of a power failure. In large exchanges, the individual cells were lead line wooden boxes about three feet high; quite large, and containing a lot of sulphuric acid. Occasionally one or more would have to be emptied; occasionally the whole battery; and the written instructions in "E.I."s (engineering instructions) were, depending where the exchange was located, to notify the "water board" then flush the acid down the drain.This would have happened a lot in the 1960s when the old manual exchanges were being changed the automatic. Whether this was allowable depended I believe, on how the local sewage works operated.

Maurice

Thread: Where's my Dykem blue gone - there's no need to read this
18/04/2019 19:18:27

I think all these lost items are in a parallel universe. I carried a length of chain with a padlock and key into the workshop. The key dropped onto the floor. I put the chain and lock down and went to recover the key. Nowhere to be found. It's probably in the same place as my two airbrushes that also went beyond the ken of man!

Maurice

Thread: Ferric chloride
08/04/2019 18:57:22

I have just been reading the account of etching the nameplates for a loco in the latest M.E. It brought to mind a couple of tips that I was given by the staff of a firm who did this sort of thing professionally for the electronics and printing industry. I was actually getting some photo resist from them, and while there, I was told that if using ferric chloride (they no longer did), if the action seemed a bit slow, don't add more crystals. Instead, dilute it a bit more with airated water. Oxygen is a catalyst to the reaction and it should speed things up. They actually applied the etchant via a foam pad through which they bubbled air, and the bubbles burst onto the work. Another tip, was to fix the work to something which allows the work to be held in the etchant face down to allow the debris to fall away, and rock it gently at the same time. I followed their advice and made two very satisfactory plates for a Robey steam tractor that I was building, (since disposed of). I hope this may be of help to someone.

Maurice

Thread: Vickers Bl 8 inch Howitzer cannon of 1917
06/04/2019 13:32:53

Those wheels are superb! Looking forward to seeing them complete. Speaking of looking forward, did these guns have breach blocks with an interrupted thread?

Maurice

Thread: Knurling speed
03/04/2019 19:34:27

Thanks for all the replies gents; It was really the speed at which the chap did it that surprised me; not how he found the correct diameter. I never calculate the size, but I can only recall two failures and they were ok on the second try. Next time I am a loose end, I will try making a knurl without back gear, just out of curiosity. Thanks again

Maurice

03/04/2019 00:55:34

I have just watched "The Repair Shop" on B.B.C. T.V. Their watch maker was knurling a large piece of brass to make a replacement tuning dial ring. He seemed to do it at a very high speed. I read in M.E. many years ago to do it in back-gear. I just took it as gospel, and have done it so, ever since. What is the correct speed to do it?

Maurice

Thread: Telephone / Internet Scams
01/04/2019 17:48:16

Some time ago I had a call from a very nice sounding gentleman with a pronounced foreign accent. The call went thus:- " Hello; Mr.Cox"? "Yes". "I work for Microsoft and I need to speak to you about your computer". "Oh.....you work for Microsoft?" "Yes". " My computer is an Apple. What has that got to do with Microsoft?" Long pause.......

"Mister Cox; you are a BAD man!!!"

I think he was the bad man.

Maurice

Thread: Please help machining
01/04/2019 17:39:20

Where in the world are you Jo?

Maurice

Thread: Vickers Bl 8 inch Howitzer cannon of 1917
31/03/2019 00:58:03

Hi Mal; following my question about the direction of the strakes on the wheels, I have been looking at pictures on the Webb. They have them both "left" and "right" handed. As far as I can see, pictures of them in service generally show them fitted the opposite way to how yours are temporarily set up, that is the other way round to that of traction engine practice; while those in preservation are the opposite Just to make it really difficult, there is one picture of two guns on active duty, side by side. One has the wheels one way and the other, the other! They don't make it easy do they? I think you can choose which looks best to you. Cant wait for the next update.

Maurice

Thread: Unusual drills
31/03/2019 00:13:39

Yes; I'm working on that. My camera is on the blink at the moment; I am trying to borrow one. I'll post pictures as soon as I get it.

Maurice

30/03/2019 18:31:51

I was sorting though some bits and pieces that came from an old friend's workshop. Still sealed in a packet are what at first sight looked like a couple of 1/8" drills. However, looking more closely, the last 5/32" of the shank on the cutting end has no flutes, and the cutting face on one is like a pyramid, the other is chisel like, i.e. a straight line across the centre and an inclined face at about forty-five degrees on either side. As they are packed together I assume they are intended to be used together, perhaps for drilling hard material in a two stage process. Can anyone tell me what they are really for, and how they are used please?

Maurice

Thread: Vickers Bl 8 inch Howitzer cannon of 1917
29/03/2019 23:14:26

I agree; this model is fantastic! I look forward to seeing the next pictures. Also, I have a question. On traction engines with straked wheels, the wheels were fitted so that the "screw" effect of the slanting stakes when under load, tended to push the wheels in towards the horn plates. Does any such consideration have to be give to this when the wheels are being towed? I can't work it out!

Maurice

Thread: Have your fathers habits rubbed off on you. Just for fun
29/03/2019 23:06:08

Referring to the original post, an old friend of mine spent his working life in the paints division of I.C.I. he tells me that while gloss paint is fine with frosty storage, emulsion paint will take on the appearance of porridge and be unusable; so in that respect you'd best listen to your dad Bill.

Maurice

Thread: Oscillating paddle engine
28/03/2019 22:23:53

Has anybody seen or had a go at making the oscillating paddle engine in K.N.Harris's book; Model Stationary and Marine Steam Engines? Getting all the flat surfaces truly flat and parallel looks formidable, as does cutting the steam ports accurately. I think I saw one once many years ago. it was a bit battered, painted pale green, very chipped, and had no paddle wheels. It was a short distance from me and I didn't recognise it for what (I think) it was. I would very much like to know how well one of on these engines might perform.

Maurice

Thread: Myford Super 7 Bed Wear
27/03/2019 20:03:55

I have just read your original post again. As Brian says, you reduce lift by removing shims; actually, in the case of the S7, the shims are soldered together in a stack and my be pealed off one at a time. The can be tricky to start; I seem to remember resorting to an old fashioned razor blade. I can't remember how thick each layer is I'm afraid.

Maurice

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