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Type: Posts; User: A J in WA

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  1. Great Scott Lathes (2 off) Gumtree Perth area

    Two Great Scott lathes on Gumtree in the northern suburbs.
    https://www.gumtree.com.au/s-ad/sinagra/other-tools-diy/two-great-scot-metal-lathes/1266146666
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    The fan is supposed to keep the motor cool. ...

    The fan is supposed to keep the motor cool.

    Was it running before you started your work?
    Did you do any re-cabling of the supply?

    I take it the fan is single phase?
    If yes, does it have a...
  3. Good answer Bob. Real test with real results...

    Good answer Bob. Real test with real results always beats theory!
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    Good Morning Bob, Are the horns "Klaxon" types...

    Good Morning Bob,
    Are the horns "Klaxon" types with a motor?
  5. Re-reading post #1 the stated 3.9Amps is probably...

    Re-reading post #1 the stated 3.9Amps is probably the stall current. If you multiply 3.9Amps by 240Volts you get 936VA which is about three times the rated output.

    Starting current will be as you...
  6. ................. Did I read your reply right? ...

    ................. Did I read your reply right?
    the motor spec of 3.9amps is the FLA and does not include starting amps. It is the max amps at full load under running conditions.

    3.9 Amps is the...
  7. Was the green "eau de Nil" or "British racing...

    Was the green "eau de Nil" or "British racing green"?
  8. Calculating the inflation for the purchase price...

    Calculating the inflation for the purchase price for a back geared lathe with compound slide (in the 1939 advertisement) which is listed as 16/10/- (full price, not sale price), would equate to...
  9. Good Evening Jayne, Plainly not much wear,...

    Good Evening Jayne,

    Plainly not much wear, which equates to not much use. You have had a lucky purchase!

    I have a 1950's Hercus B model that came with the original Inspection documentation...
  10. Good Evening Jayne. Welcome to the Forum. An...

    Good Evening Jayne.

    Welcome to the Forum. An awful lot of knowledge here that the members will happily share.

    I have three bar-bed lathes. None have the "Burden" or "Bagear" name on them. Mine...
  11. ....... With a lot of cables etc coming from our...

    ....... With a lot of cables etc coming from our Chinese friends, many items have underrated cables to supply them. These can be hard to recognize visually as the crafty devils worked out that PVC is...
  12. Simple answer: the kind of wire you would find in...

    Simple answer: the kind of wire you would find in an extension cord. It has a rating of 10 Amps or higher - usually!

    More complicated answer: drill presses are usually started in a "no load"...
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    I have a Douglas (11"), so an original is not a...

    I have a Douglas (11"), so an original is not a problem.
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    I will ask him. He is not so fast any more, so...

    I will ask him. He is not so fast any more, so you may have to wait a little bit! His lungs are suffering from a career working with acidic chemistry.
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    Tough Drill Press Badge

    My friend Laurie made six of these by lost wax casting. They are cast in aluminium from an original Tough Drill Press badge (the original is sand cast in aluminium). There are four (4) left. They...
  16. Thread: hand shaper

    by A J in WA
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    Yes. I will dig it out this week. I will send...

    Yes. I will dig it out this week.
    I will send you a PM.
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    Finished! Laurie broke a bone in one hand, so has...

    Finished! Laurie broke a bone in one hand, so has been a bit slowed down, so it all took him a little longer than planned! Still brilliant results.
    390031390030
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    Mon dieu monsieur! Have you tried UK...

    Mon dieu monsieur!

    Have you tried UK suppliers?

    I have a "vintage car" friend in the UK (he has BRITISH cars ONLY), and even though I am NOT ALLOWED to
    say the "M" word, he tells me that many...
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    I made a Hercus stop from a short piece of 25x25...

    I made a Hercus stop from a short piece of 25x25 square bar, and a M6x1 threaded rod for adjusting the stop. Didn't take long to make.

    Parallels. Old bearings, and bearing rollers, and HSS make...
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    On second thoughts, I don't think you have a...

    On second thoughts, I don't think you have a Mars. Well certainly not "The Great Scot."

    Look at the one currently on Gumtree in W.A....
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    Mars Great Scott, Sorento, W.A.

    Mars Great Scott $1200
    Gumtree:
    https://www.gumtree.com.au/s-ad/sorrento/power-tools/great-scot-metal-lathe/1262075943
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    Drummond 3 1/2" M Type Perth area

    Drummond 3 1/2" M Type, Kallaroo. $1000
    Gumtree:
    https://www.gumtree.com.au/s-ad/kallaroo/power-tools/drummond-3-1-2-m-type-lathe-metal/1262150117
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    I think you have a Mars lathe (read "Conrik"...

    I think you have a Mars lathe (read "Conrik" lathe as well) with an "after market" tailstock, and carriage handwheel.
    I have a Mars Great Scott.
    It would not be surprise me that the tailstock went...
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    Most electronics equipment can cope with 50c...

    Most electronics equipment can cope with 50c ambient temperatures. Quality equipment - 55 to 65c. It depends on who made it, and for what conditions. They tend to shut down in over-temperature...
  25. "..... data plate says 1420 rpm, whilst the led...

    "..... data plate says 1420 rpm, whilst the led tacho shows 1496, which is about + 5%"

    The synchronous (theoretical) speed of a four pole motor on a 50 Hz supply is 1500 RPM. The common electric...
  26. Steam engine, Bolton No 7 horizontal mill engine.

    Manjimup, W.A.
    $1500
    75% complete built to very high standerd and finish, I have 2 indenticaly built will part with one, take your pick...
    Gumtree...
  27. Thread: Bead Roller

    by A J in WA
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    I ended up purchasing a H&F SJ-24D - Bead Roller....

    I ended up purchasing a H&F SJ-24D - Bead Roller. Local pick-up for me - so no delivery costs.

    Should create a worthwhile learning experience!

    Thanks for the comments from Forum members. Most...
  28. Thread: Bead Roller

    by A J in WA
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    Bead Roller

    I am considering purchasing a bead roller, but I don't know much about them.

    Sheet metal projects that have a rolled wire edge caused me to consider purchasing a bead roller, and as Hare and...
  29. An interesting tale - that contains a warning -...

    An interesting tale - that contains a warning - "Don't be so keen to offer your services."
    The story qualifies you for the "blue and white apron" award with oak leaves!
    Wear it with pride!
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    Hardinge Lathe for Sale Gumtree Perth

    Hardinge HC super precision chucking lathe on Gumtree, in Perth.

    https://www.gumtree.com.au/s-ad/perth/miscellaneous-goods/lathe-hardinge-hc-super-precision-chucking-lathe-/1259308468
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    Casting of Tough drill press badge is...

    Casting of Tough drill press badge is progressing. Laurie has made the mould.
    389249
  32. Thread: Power Factor

    by A J in WA
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    Putting BaronJ's reply another way ...... ...

    Putting BaronJ's reply another way ......

    Apparent Power is called just that because the calculation does not contain only Watts. It also contains a component that relates to the "reactive power."...
  33. Thread: Power Factor

    by A J in WA
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    VA is the "apparent" power in an AC circuit. If...

    VA is the "apparent" power in an AC circuit. If you put a voltmeter across a load, and an amp meter in series with the load you would get a voltage and a current reading. Multiplying these together...
  34. Thread: Power Factor

    by A J in WA
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    It looks like I did not properly understand...

    It looks like I did not properly understand Stuart's original post at the beginning of this thread.

    I missed the bit about "genie" meaning a rotating machine with a prime mover.

    Am I now...
  35. Thread: Power Factor

    by A J in WA
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    I think you are saying .... The 3.4kW inverter is...

    I think you are saying .... The 3.4kW inverter is running at maximum output. It is supplying a 1.7kW 0.5PF load.

    If my assumption is correct, then 1.7kW is going into the load connected at the...
  36. Thread: Power Factor

    by A J in WA
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    Correct -industrial customers. Depends on the...

    Correct -industrial customers. Depends on the customer's consumption. Big customers usually have a connection at a higher voltage - 22kV and higher is common, Special metering at the supply point...
  37. Thread: Power Factor

    by A J in WA
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    [QUOTE=Stustoys;1975561]So would they need active...

    [QUOTE=Stustoys;1975561]So would they need active PF correction? or would they add PF correction caps to fridges etc?

    Power Factor correction on appliances such as fridges is taken care of by the...
  38. Thread: Power Factor

    by A J in WA
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    Simple answer is yes. The current is "travelling"...

    Simple answer is yes. The current is "travelling" out to the inductor and returns every half of the cycle (more or less), so the conductors and switchgear and generator needs to be bigger for poor...
  39. Thread: Power Factor

    by A J in WA
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    2,441

    Thanks BaronJ. I always wonder if what I am...

    Thanks BaronJ.

    I always wonder if what I am writing makes sense, and I am glad that what I wrote helps Forum members to understand a complicated concept!

    I have great admiration for those who...
  40. Thread: Power Factor

    by A J in WA
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    2,441

    [QUOTE=.RC.;1975471]I am still not getting how...

    [QUOTE=.RC.;1975471]I am still not getting how you can have current flow at zero volts.

    An inductor is a coil of wire. it can be wrapped around nothing (air), or a core made of a magnetic...
  41. Thread: Power Factor

    by A J in WA
    Replies
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    2,441

    Power Factor and VAr in Simple Terms When...

    Power Factor and VAr in Simple Terms

    When electric current (DC or AC) flows through a conductor the current develops a magnetic field about the conductor. The simple experiment of a magnetic...
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    What is a "3 slot" Hercus mill please. I thought...

    What is a "3 slot" Hercus mill please. I thought they wer all horizontal mills that you could add a vertical head, and a slotting head? (can't remember).
  43. Thread: Power Factor

    by A J in WA
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    2,441

    A lightly loaded induction motor can have a Power...

    A lightly loaded induction motor can have a Power Factor as low as 0.3

    Manufacturers of electrical equipment - air conditioners are an example - use a motor of a higher rating than is required to...
  44. Thread: Power Factor

    by A J in WA
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    Yes, True Power, which you pay for. Here is my...

    Yes, True Power, which you pay for.
    Here is my calculations. My answer agrees with the screen shot.
    389020
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    Tough Emblem. I saw my friend Laurie last night....

    Tough Emblem.
    I saw my friend Laurie last night. He said the emblem was sand cast and made of aluminium. He will investigate reproduction.
  46. If the turret is available separately, I am...

    If the turret is available separately, I am interested at $250 plus post and packing.
    If available, let me know by PM.
    Regards,
    Alan.
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    Good Evening Mr High Speed Juvenile Frog! Is...

    Good Evening Mr High Speed Juvenile Frog!
    Is this what you are looking for? It is not for sale, but I have a friend who is a "gun" at investment casting in brass / bronze. He may be able to make a...
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    From memory...... which is really good.........

    From memory...... which is really good...... sometimes ..... especially in the morning!

    "Made in Germany" means it was made pre WWII;
    "Made in West Germany" or "Made in the DDR(?)" is post war...
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    The parcel arrived yesterday. Chuck looks...

    The parcel arrived yesterday.
    Chuck looks great, and I shall attempt to fit it today.
    Packing is a work of art - you've missed your calling in life!
    Thanks again Pete.
    Regards,
    Alan.
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    Looks great Pete. PM sent.

    Looks great Pete. PM sent.
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