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Member postings for Reg Rossiter

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

Thread: Myford 254 faceplate options
25/08/2020 16:01:43

My Myford 254S doesn't have a catch plate. It has a pin which goes in one of the chuck retaining bolt holes. I think I purchased it from RDG several years ago.

Reg

Thread: First loco steel choice
14/02/2020 08:25:02

Hi Jason,

So far, I haven't had any problems machining anything from M.E.L. However, I always use sharp tools otherwise it can end up looking like a ploughed field.

Reg

13/02/2020 18:18:33

Ian,

Model Engineers Laser do quite a few laser cut bits for Juliet. A pair of accurately cut frames will set you off on the right track if nothing else.

http://modelengineerslaser.co.uk/locoparts.aspx?loconum=276&locotype=4

Reg

Thread: The cultural status of engineers in the UK
11/01/2020 15:47:17

To become a Chief Engineer Officer at sea you require a Certificate of Competency, a process that can be expected to take about ten years. A degree will get you exemptions to some of the academic subjects but won't get you your 'ticket'.

Reg

Thread: Hello from the North East
21/12/2019 09:48:45

Hello Paul,

Where abouts in Weardale are you? I used to live in Frosterley and went to school in Wolsingham. If I hear of any suitable lathes locally I will let you know.

Thread: Model Enginner Binders availability
10/12/2019 17:17:15

I asked Mags UK yesterday and they replied:

I am sorry to say that we are still waiting for the arrival of the M.E. binders but they

should be with us towards the end of this week, I am afraid that we never know what

time the delivery will arrive. As soon as they have been booked to the system they will

be visible on the website for purchase.

Reg

Edited By Reg Rossiter on 10/12/2019 17:17:43

Edited By Reg Rossiter on 10/12/2019 17:18:26

Thread: Hello from the North East
07/12/2019 12:07:11

SP

I'm just up the road in Crook and would happily supply you with lots of older copies of Model Engineer to give you hours of reading pleasure over the Christmas holidays.

RGR

Thread: Pressure gauge help needed please.
27/04/2019 11:37:12

Standard marine practice is to use a needle valve before the gauge. It's merely a case of screwing the valve in until the oscillation of the pointer becomes acceptable while taking care to ensure the valve isn't shut off tight. You might get an acceptable result using a very fine orifice before the gauge instead.

Reg

Thread: Tube Seam
17/02/2019 18:37:19

The word Nominal needs to be taken into account when looking at piping. Yes, there is a cross-over of terminology, however in the real world, especially in something like hydraulic systems you always order tube. The oil and gas industry certainly tends to differentiate between pipe and tube, as does the shipping industry. As recently as last year the ECITB mechanical engineering exam contained a question aimed at the candidate differentiating between pipe and tubing. At the end of the day you can call it whatever you want but before you place an order for thousands of pounds worth of the stuff you'd better make sure that you and your supplier are using the same terminology. So far, I've had no issues with orders.

Reg

17/02/2019 15:34:34

Paul Lousick is quite correct. In the UK tubes are sized on their OD while pipes are sized on their bore.

Reg

Thread: releasing tapers
12/02/2019 12:02:16

RePosted by not done it yet on 11/02/2019 08:26:08:

Look guys, I know the drive should be friction between the tapers, but answer me this: Why was a tang fitted, when a dome (or even flat surface) would have sufficed as a point of action for the wedge? Why was the drill only able to be inserted in that orientaion.

In other words, was the tang a poor design or was it there as a back up tell-tale sign (that all was not well) before the taper surfaces were totally screwed up?

I’m not a mechanical engineer, so please give me a good design reason why the tang was developed in that shape, ‘cos those guys that designed it had a good reason for that shape. If it would have been better just flat topped, that is how they would have done it - simpler and faster not to have to locate the tang in the spindle slot, for instance.

The reason a tang is preferable to a domed or flat surface is down to maintaining the strength of the spindle. In order to use a taper drift you have to put a slot right through the spindle which weakens it. If you were going for the domed or flat ended option you would have to continue the round, tapered bore up into the ejector slot. Therefore at this point in the spindle you would have a round bore and a slot reducing the cross sectional area of the spindle and therefore the strength. Using a tang means that the tapered bore stops as the tang slot starts and leaves the spindle stronger.

Reg

Thread: Milling Machine
09/03/2017 19:44:53

I have had a Warco VMC for quite a few years and have never thought I wish I'd got something else.

Reg

Thread: Steam engine with centrifugal pump Pictures
09/03/2017 19:40:32

What many people may not appreciate is that even now you can usually find a steam up and downer stripping pump and steam turbine driven cargo pumps in many petroleum tankers. I'm talking ships here, not trucks. Double inlet pumps are the norm in large sizes. They aid throughput and balance axial forces. As for the use of steam, steam stripping pumps are safe in a potentially hazardous environment where you don't want electricity. Cargo pumps usually have their prime mover outside the pump room, in the engine room. Steam turbines are often used because that puts load on the boilers to produce plenty of inert gas for blanketing the cargo tanks as cargo is discharged. Electric drives can be used but then you may need a separate inert gas generator.

Reg

Thread: Why is the lift so small on water pump ball valves?
06/02/2017 14:22:50

For full flow the lift need only be the diameter of the seat divided by 4. In your case 1/32" lift would give full flow on a 1/8" seat diameter.

Thread: Optical chucks
31/01/2017 09:40:50

I use a laser edge / centre finder.

http://littlemachineshop.com/products/product_view.php?ProductID=2604

Reg

Thread: Pink Flux-coated Silver Solder Rods
17/12/2016 17:57:38

I have used UNITOR AG60 pre-fluxed rods over many years at sea. I seem to remember UNITOR recommending that Easyflo flux was applied to the joint before starting to heat it. This is what I have always done and I've never had any problems.

Reg

Thread: Electric Guitar
22/11/2016 22:48:15

Actually, giving this a bit more thought, cleaning the pots may be all that is required. Maybe if you post a picture when you open it up, one of the electronics professionals on here can advise you better than me.

Reg

22/11/2016 22:32:05

I remember this when I was in the second form at grammar school so that would be 1972/73. I think the drawing showed a Gibson Flying V shaped guitar but I made mine a Gibson SG shape. The magazine may well have been Practical Electronics. The circuitry was very simple, 2 pots and a capacitor for each pickup (if I remember correctly, it has been 44 years). If you remove the scratch plate you can probably read the details off the pots if not the capacitors as well. If all else fails an Internet search will soon reveal suitable wiring diagrams.

Reg

Thread: Steel boiler
21/09/2016 11:14:09

John, there's no madness, only physics. Don't under estimate how much force is applied to a tube when it is expanded. Some tube plate holes may be plain while others may have a little groove in them, half way across the tube plate. For a 2 1/2" tube the groove may be about 3/32" deep. If you gas-axe one of these tubes out you see how the tube expander has deformed the steel tube to fill the groove. Even when you apply a pressure test of a few hundred psi that acts on the outside of the tube they (should) stay tight.

Reg

Thread: Only Posters can respond to Classified Ads
16/09/2016 18:33:55

Jason,

Just how many posts are required to be able to see the contact details for classifieds? Just posting drivel to make the target isn't going to enhance the forum.

Thank you,

Reg

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