Member postings for Paul Lousick

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.

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

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

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

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.

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.

,

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

Recommend Derek Brown's book

Its better to view the mags thru Pocketmags.

"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.

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

Try the Youtube link now

**LINK**

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**

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.

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

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

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

My Ruston Proctor will just fit into a 6' x4' box trailer which I tow behind my Mazda 6 which can legally tow 750kg unbraked.

The trailer weighs 220kg and the engine 700kg. Loaded up with tools and supplies it is over 1 ton, so I had to upgrade the trailer with a bigger axle and add electric brakes.

Paul.

There was a discussion about coolant yesterday, here on MEW, plus lots of other posts about coolant systems. The same flood coolant system for lathes can be used on a mill.

I use a commercial tank and pump. Available from most lathe/mill equipment suppliers amd on ebay. Ample coolant supply to overflow the table if not throttled back.  The tank has 2 compartments. Coolant return passes thru a strainer into the first compartment, then flows over a wall into the second to separate any swarf.

Paul

Universal Coolant Fluid Pump

• 240v Single Phase
• Flow Control Lever
• Magnetic Base Adjustable Nozzle
• Push Button Control
• 3 Pin Plug

Dimensions

• 11 Litre Tank
• 37 x 26 x 17cm
• IP54 Switch-plug combination
• Delivery Height 2.5m
• Delivery volume 3.5 Litres per minute
• 100w 240v Single Phase Pump
• Adjustable Flow Control Hose

Edited By Paul Lousick on 31/08/2021 13:01:04

Hi Julian,

I built a 6" Ruston Proctor SD traction engine which is a similar size to the 4 1/2" Burrel with drawings and castings supplied bt LSM.

Most of the parts were machined on a 9" (diameter) Southbend lathe and a Seig SX3 mill which I pushed to the limit. I did however have access to larger machines for a couple of the components that were too large. (you can always get the bigger parts made by a local machine shop if you don't have the tools).

My engine has a steel boiler and I did all of the machining myself and employed a professional welder for the final assembly.

Paul

Link to the build here: **LINK**

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Edited By Paul Lousick on 29/08/2021 11:01:50