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Member postings for Paul Lousick

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

Thread: Boiler water level
24/09/2021 00:29:04

Noel, I am confused about you statement " Bottom nut / glass 1/4" above crownsheet"

Our code states that the bottom (visible) end of the glass shall be above the highest point of the crown of the inner firebox by not less than 10% of the distance from the crown to the outer wrapper.

On copper boilers the top of the fusible plug has to be a minimum of 6mm above the crown and on steel boilers 10mm above the crown. If the water level was down to the bottom nut at 1/4" above the crown, they would be exposed.

23/09/2021 09:14:34

I can't comment on a Speedy Bob as I drive traction engines, model and full size and keep the water leved around 1/4 to 3/4 of a glass but it does depend on if you are going up or down a hill. The change in gradient is much bigger on a traction engine than on a rail loco. Not enough water in the boiler and you expose the crown and it can melt. Too much water and the engine will prime and break something. Reading the road ahead and having the right level of water in the boiler comes with experience. Running on a level club track is much easier and you should not have any problems.

Paul.

Thread: Pendulum spring steel hangers
23/09/2021 01:14:47

I see your problem has been solved.

For your info, there are lots of clock springs available on ebay of different widths and thicknesses.

Paul

Thread: Boiler water level
23/09/2021 01:07:49

Our boiler code in Australia states that the bottom (visible) end of the glass shall be above the crown of the firebox by not less than 10% of the distance from the crown to the outer wrapper.

Thread: Hello, from Spain
22/09/2021 09:08:06

Hola desede Australia. Apologies for my level of Espanol. There are members from many countries on this site and always good to share experience, projects and ideas.

Paul.

Thread: Sieg X2 mini mill blowing fuses
21/09/2021 23:42:47

As stated, if it is under warranty, take it back.

Using an ER32 collet chuck should not cause a problem. It is the size of the cutter that is the limiting size, not the holder. ER32 collets will only take cutters up to 21mm dia. which is smaller than the 30mm allowable for the mill.

Edited By Paul Lousick on 21/09/2021 23:43:25

Thread: access to magazine archive
17/09/2021 23:53:12

Read previous posts about this problem.

Caused because Adobe has cancelled its Flash player. We have been advised that the archives will be converted to a different format that we can read but don't know when. Pocketmags is a better option for viewing the old magazines but does not go back as far as MEW

Thread: A Couple of Questions about Pipe?
17/09/2021 23:42:32

I am in Australia and never heard of pipe being referred to as barrel. The pieces of old water pipe that I have are galvanized on the inside as well as the outside. Otherwise they would rust.

Pipe is sized by its bore and as mentioned, originally used for calculating the flow of liquid thru it. The outside of pipes are a constant diameter to allow pipes with different wall thicknesses to screw into a common threaded hole (tees, elbows, valves, etc) Therefore the designation of a nominal bore size, not an exact bore size. Thicker walled pipes are required for higher pressures. Pipe is sized by its nominal bore and a schedule that specifies its wall thickness. Schedule 40 is the size used for common water pipe for homes.

Tube is specified by its OD and wall thickness (gauge size).

Paul.

Edited By Paul Lousick on 17/09/2021 23:45:44

Thread: What Did You Do Today 2021
14/09/2021 08:45:51

The modern industrial vari-speed belts are like you have said, a wide vee belt, made from a similar, reinforced rubber material. A bit different to the one in the photo with wooden links attached to a flat belt. And different to the belts in the new car CVT drives which are made of thousands of metal parts.

A friend wanted to buy a new car with one of the new transmissions and I did a bit of research and discovered that the belts push to transmit power and not pull like traditional belts. They are very compact compared to a tradition gearbox and although the makers claimed that they were reliable and good for 100,000 plus kms, found that they had a few problems, especially if driven hard and rccommended not to buy one.

14/09/2021 00:30:22

The first thing which intrigued me in Dr_G's post was the first photo of what appears to be a variable speed drive. The same principle was used (and still is) for speed control of mechanical equipment.

I remember using "Reeves" Vari-speed drives in the early 1970's. Some of the latest small cars use a CVT gearbox (constantly variable transmission).

The speed of the output shaf depends on the diameters of the pulleys. The flanges of the pulleys are tapered and the belt does not run on the bottom of the pulley but on the sides of the taper. The distance between the flanges is variable and because of the taper, the diameter of the pully where the belt is driven changes in diameter, altering the ratio between the 2 pulleys.  I presume the red lever alters the width of the controlling pulley. The flanges of the second pulley are spring loaded and automatically compensates.  Speed adjustments are only done when the drive is running.

vari speed drive.jpg,

Edited By Paul Lousick on 14/09/2021 00:56:22

Thread: Injectors of Peter Cauley
12/09/2021 23:58:42

Recommend Derek Brown's book yes

injectors.jpg

Thread: Digital image size
11/09/2021 02:56:25

Its better to view the mags thru Pocketmags.

Thread: Hole in tool post
10/09/2021 13:10:36

"It's for a pin that locates in the compound slide, presumably to prevent the toolpost moving under load"

Or possibly to lock it in a square position and not rotated.

Thread: Croft Mill Engine
09/09/2021 03:19:51

They are in the archives but unable to read them since Adobe pulled the plug.

Thread: What Did You Do Today 2021
04/09/2021 08:27:46

Try the Youtube link now

**LINK**

04/09/2021 05:43:06

Because of the Covid restrictions, all of the planned engine rallies have been cancelled and I needed to let off a bit of steam with a couple of laps around the local neighbourhood

**LINK**

Thread: internet cable
04/09/2021 02:08:25

Cat5 ethernet cable can handle up to 10/100 Mbps at a 100 MHz bandwidth.

Cat6 cable is similar to a Cat5 ethernet cable — it consists of four pairs of twisted copper wire. However, it provides you with much more functionality. A Cat6 cable has a bandwidth capacity of 250 MHz, for example, and it offers you speeds of up to 10 Gbps.

Internet speeds are getting faster and for the slight extra cost of cable, is good insurance for the future.

Thread: 9/32 hex steel bar
04/09/2021 00:06:22

The 9/32" [0.281"] hex nuts must have a tolerance, nothing is made to an exact design size. What is the minimum allowable tolerance ?

7mm = 0.275" which is only 0.007" less than required. The 7mm hex bar is also made to a tolerance. Can you check with the supplier if have any that has been made to the maximum tolerance and are slightly bigger ?

Paul.

Edited By Paul Lousick on 04/09/2021 00:07:12

Thread: Cleaning my lathe
02/09/2021 11:01:53

Old paint brush and vacuum cleaner and a wipe with kerocene on a rag. (aka Hoover and paraffin). Then a wipe over on bare metal with a clean oily rag. (It's a workshop tool not a Swiss watch)

Paul

Thread: 5 Rotary Table/Tailstock/Chuck Kit Info/Questions
02/09/2021 00:38:06

As already mentioned, using a centre in the mill to locate in a hole in the RT (or vice versa) is a quick set-up method for most work.

For a more accurate set-up, mount a dial indicator on the mill spindle and use it to locate on the morse taper of the rotary table spindle. (or the machined recess on the end of some RT's). Carefully turn the mill spindle by hand to achieve zero movement of the indicator. Bolt down the RT and check again to see if it has not moved.

Then attach the 4-jaw chuck and use the dial indicator to position the work. (4-jaw chuck could be attached prior, if there is access to locate on the RT morse taper for the initial set up)

Paul

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