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: Digital verniers|
The Aldi verniers are good value for everyday use and they come with a 12 month waranty. Make sure that you keep it (most people do not) and take it back for a replacement.
|Thread: Tuna Can Blower|
Very neat Stuart, and a basic answer to "Why do they call steam raising blowers when they suck ? "
Called blowers because the air is pushed (blown) by the centrifugal action in this case, causing a reduction in air pressure on the inside of the rotor. The atmospheric pressure pushes air into this space to achieve equilibrium.
|Thread: My First Stationary Engine|
Brass will work. The Muncaster engine published in ME even had an aluminium piston. Aluminium is often used for the piston in full size engines to reduce the mass. Heavy pistons cause the engines to rock as they move back and forward. Brass is OK in steam applications but will corrode (de zincify) when in water.
|Thread: Steel for cutter?|
Have you searched on ebay. Found these for using on an angle grinder.
|Thread: Fly press weights.|
One of the options given was to to use concrete but if you would like the weight to be heavier for its size, add lead or steel to the mix.
One of the companies which I worked for manufactured industrial cranes like the ones on building sites but much bigger and the cost of cast iron or steel for the counter weights was expensive. The weights were more than 20 tonnes each. They were made by casting concrete using steel as the aggregate. Mainly from the discarded pieces remaining after punching parts from steel plate. The smaller the parts, the better because you can pack in a higer proportion of steel. For the flypress weight you could use any small metal objects, nuts, bolts, lead fishing weights, etc. Use concrete, polyester resin, builders joint filler or other bonding agent to hold the casting together.. The mould coukd be simply a childs plastic ball.
Exercise weights are made from similar cheap cast iron as used in sash window weights. Sometimes it is OK to machine but Murphys Law says that most of the time it is crap. But they are cheap and good if used in the right application. Car brake discs are better souce of machinable cast iron if it is a suitable size to suit the application.
"no good without some form of pressure regulation"
Most shop compressors come with a reducing valve which can output air to a lower pressure
|Thread: Fly press weights.|
Dumbbell exercise weights are a source of cast iron discs.
Edited By Paul Lousick on 21/01/2020 09:56:48
An air brush compressor would probably run a little Stuart type portable engine but not a 2" TE. You will need a bigger garage type compressor. An air brush compressor has ample pressure to turn over your engine but does not have enough air volume for running continually. It may run your engine for 10 seconds before the reservoir was exhausted.
|Thread: A change of scale.|
Scaling a model to a different size is not only about scaling the dimensions. You also have to consider the size of available materials.
Parts which are fabricated from sheet metal and plate or standard size round bar are probably not available in the new scaled size and a substitute size has to be used instead. Associated parts will then have to be modified to suit these items.
Be aware that when the scale model drawings are first drawn, many of the features of the full size engine/machine were simplified or not included. Not a problem if you are scaling down the model drawings but could be if you are scaling up. In which case it is better to copy from the full size drawings.
|Thread: Dunlop Taper Bushes|
Also lots available on ebay. Do a search for taper lock
|Thread: A good toolpost drill design|
If a hand held gun drill is too bulky, use a flexible drive cable attached to the drill with the chuck on the cable held in the too post. Should be suitable for drilling holes up to 6mm or slightly bigger.
Edited By Paul Lousick on 20/01/2020 00:28:17
You don't need a lot of pressure to run a TE. 20 - 30 psi will run it over but you need a lot of volume. Air does not have the expansion rate of steam and the reservoir is quickly emptied.
I have a larger engine with a 3.25" piston dia and have an 8 cfm compressor. It takes about 10 minutes to charge the air receiver to 80 psi and will run my engine for a minute or two before it is exhausted. The compressor cannot supply enough air to run continually. A 5 cfm compressor would probably keep a 2" engine running continually without a load.
|Thread: Take 1 1/2 hors of your life to watch this|
Heaps of good technical information and pointers for machining and worth watching but like many Youtube videos too much un necessary waffle. Video could have been reduced to 1 hour or less.
|Thread: Australian Bush Fires|
Rain has finaly arrived in many areas across Australia. It is welcome but has caused other problems.
More then 250mm has fallen in some areas but because the grasslands have ben burnt it is not restrained and has caused flash flooding. Ash from the fires has poluted rivers, absorbing the oxygen and killing thousands of fish.
Fires are still burning but has given the fire fighters a hand in creating fire breaks to stop its advance. In some cases the rain has hindered them by making roads boggy and stopping the trucks. Mother nature can be savage at times !
|Thread: Has anyone watched this Girl|
Yes, have watched some of her videos, she is good.
|Thread: Gunmetal or brass|
It could also be another type of bronze.
Gunmetal is a bronze – an alloy of copper, tin and zinc. Proportions of its metals vary. 88% copper, 8-10% tin and 2-4% zinc is usual. Originally it was used for making cannons.
|Thread: Mobile Phone|
My son had a similar problem with a service provider who refused to do anything about improving mobile services at our home. My phone is on a different network and has no problem.
He took his complaint to the ombudsman (a government official who hears and investigates complaints by private citizens against other officials or government agencies.) He was able to apply pressure to the service provider to cancel the contract and give a refund.
|Thread: Steam operated drain cocks|
My preference is for manually operated drain cocks.
If the engine starts to prime , you can open a manual drain to release pressure and prevent damage to the cylinder, piston, etc.
|Thread: Driving Small Taps|
I hold the small taps in a pin vice with the handle of the vice lightly held in the drill press chuck to keep it aligned with the hole. Then turn the pin vice by hand.
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