Page 2 of 3 FirstFirst 123 LastLast
Results 16 to 30 of 37
  1. #16
    Join Date
    Apr 2018
    Location
    Sydney
    Posts
    64

    Default

    Quote Originally Posted by nadroj View Post
    To fit a tailstock from a different lathe, if needed, you can:

    - if the centre is high, machine or scrape at the junction of the base to the upper part.
    - If the centre is low, shim the junction.
    - If the centre is too far back or forward, use the screws for adjusting offset to correct it, and if desired, re-stamp new centring lines.

    A waisted cylindrical testing bar between centres can be used, machined each end to confirm dimensional uniformity.
    I decided to go with the 9" tail stock and convert it to fit the height of the 260.
    I will first use CAD to draw up the part and 3D print it.
    It may have to repeat a few times to get it perfect, but it will help get the exact height dimension, which will lather help me machine a metal part.

  2. #17
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    ml018,
    I believe I spoke to you on the phone the other day. The top and bottom castings of a Hercus 9" and 260 are different heights, all the internals are the same for both types. You will need at the least a top and bottom casting from a 260. I made the mistake years ago of thinking the top casting was the same on both and learned to my cost that they're not. If you want to go to the trouble of reinventing the wheel, I applaud your persistence, but wouldn't be easier to just buy the parts you need and save that tailstock casting for the machine it's matched to. If the machine is still in use the owner may pay you to get his matching tailstock castings.
    Mal

  3. #18
    Join Date
    Apr 2016
    Location
    New South Wales
    Posts
    45

    Default

    Quote Originally Posted by allterrain50 View Post
    I believe I spoke to you on the phone the other day. The top and bottom castings of a Hercus 9" and 260 are different heights, all the internals are the same for both types. You will need at the least a top and bottom casting from a 260. I made the mistake years ago of thinking the top casting was the same on both and learned to my cost that they're not. If you want to go to the trouble of reinventing the wheel, I applaud your persistence, but wouldn't be easier to just buy the parts you need and save that tailstock casting for the machine it's matched to. If the machine is still in use the owner may pay you to get his matching tailstock castings.
    Mal
    Cue the next questions...

    1. What is the serial number on the errant 9" tailstock ?

    Hint, the answer should not be 20018 (nor DGM 20018, there is no such thing as a DGM 20018 9" tailstock, for reasons I will not go into).

    2. Can I change the serial number on an orphaned tailstock to make the tailstock match another lathe ? Yes and no. Yes you can change it, and no the tailstock will not necessarily match another lathe.

    3. Will it be cheaper to keep the tailstock and swap/buy/sell the rest of the lathe ? Answer, perhaps, but you are better off with a 260 DGM, which is worth the extra cost, all things being equal.

    4. Am I on the phone ? Answer, no, which is a good thing for everyone else around here.

    I suggest you follow the advice in the quoted post herewith. I would think you would be up for many hundreds or thousands of dollars to try to fabricate / cast your own 260 tailstock component/s. But I might be wrong or missing something. We all have something to learn from each other.

  4. #19
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    Quote Originally Posted by Donaldo View Post
    Cue the next questions...

    1. What is the serial number on the errant 9" tailstock ?

    Hint, the answer should not be 20018 (nor DGM 20018, there is no such thing as a DGM 20018 9" tailstock, for reasons I will not go into).

    2. Can I change the serial number on an orphaned tailstock to make the tailstock match another lathe ? Yes and no. Yes you can change it, and no the tailstock will not necessarily match another lathe.

    3. Will it be cheaper to keep the tailstock and swap/buy/sell the rest of the lathe ? Answer, perhaps, but you are better off with a 260 DGM, which is worth the extra cost, all things being equal.

    4. Am I on the phone ? Answer, no, which is a good thing for everyone else around here.

    I suggest you follow the advice in the quoted post herewith. I would think you would be up for many hundreds or thousands of dollars to try to fabricate / cast your own 260 tailstock component/s. But I might be wrong or missing something. We all have something to learn from each other.


    Donald, My reply was directed to "ml018" not you. To put it in point form, which you seem to like.

    1. I have 2150 hercus owners on my register, some of whom have mismatching tailstocks, hence the enquiry about the number.

    2. We have already reunited several "orphaned" tailstocks with the machine they belong to.

    3. The two castings are available through the AMH website which with the internals of his, would give him a complete tailstock, leaving the casting free should the owner of the matching machine exist.

    4. it wasn't you who rang me so that doesn't suprise me. I am aware from previous history that there is no means of contacting you by phone.

    5. As the only person making any serious effort to keep the parts for these machines available, I HAVE already spent hundreds of thousands of dollars over the last ten years.

    Mal
    Australian Metalworking Hobbyist

    P.S. tiptoe lightly turtle

  5. #20
    Join Date
    Apr 2016
    Location
    New South Wales
    Posts
    45

    Default

    The general subject of social media and message postings is of considerable anthropological and sociological interest to me.

    Also of interest are Hercus lathes and their spare parts and production methods and history. I see almost the same evolving phenomena from the standpoint of Danish marine engines, which has occurred on a much larger scale, with roughly 120 Danish companies or former producers going out of business, leaving five (or three) survivors. There are a couple of cases where the closed-down business owner still runs their factory as a kind of hobby repairing needy engines produced decades ago. But these moribund factories without employees only carry on until the owner (& in some cases their sons) dies/die.

    So far, but there will always be more time, ml018 has not revealed the serial number of the errant or orphaned tailstock. He should inform you (Mal) because you are the person with the most chance (a chance of about 10% or 1 in ten) of knowing the whereabouts of the rest of the orphaned tailstock's lathe.

    This is another weak part of the internet social media phenomenon, a person can ask a question of a group of other people, but the same person may not be prepared or competent to answer a significant question from another in the group in response to the original question. I find this "failure to communicate" is quite common, although less so in this (machinery) sort of group.

    It may not be clear to ml018 that you (Mal) were enquiring about the tailstock number, if you re-read your posting, it may be clear to you (Mal), but it may not be clear to ml018.

    Thank-you (Mal) for your efforts and expense in resurrecting production of Hercus parts for ten years.

    It is a shame you (Mal) did not arrive on the scene 25 years ago, because then you would have had a better chance of rescuing patterns from Hercus, or at least stopping Hercus from junking its patterns (if that is what happened, mostly that is what happens in Danmark, with a couple of exceptions, as some patterns of some engine manufactureres have ended up here at the museum, and some patterns of other manufacturers are still in attics at otherwise deserted factories).

    P.S. You have the serial number of the Hercus I have, because you ask for serial numbers so that you can check compatibility of parts, and because I answered your question about the serial number, (this is an example of communication seemingly working from both ends of the conversation) and I ordered a bolt for a part from you, however the bolt you sold me was for a later serial-numbered version of the part than the serial number I had given to you (different length or different thread). Your response to this situation was to refund the bolt's price and I returned the bolt, only you forgot to refund the price until I reminded you about a year later.

    At the time this originally happened your (Mal) response about the availability of the older version of the sought replacement bolt was that you did not and would not be stocking them as there was little if any demand for them. However, despite that, you now stock that bolt. So it appears that either you changed your mind, or some of what you say at any particular point of time applies in the context or rationale in which it is said and to the person you are saying it to, although it does not necessarily apply to other persons.

  6. #21
    Join Date
    Apr 2016
    Location
    New South Wales
    Posts
    45

    Default

    Here is a somewhat different example of "failure to communicate". What follows after the ******* was posted to this thread by ml018 while I was typing a posting to this thread.

    After (or when) I made my posting to this thread, ml018's roughly simultaneous posting disappeared from the thread (as far as I can tell, I received an email with a copy of ml018's posting to the thread, but the same posting does not (at present) appear in the thread.

    That is something like saying there are two thread messages/replies numbered reply #20, one of the two replies perhaps clobbered the other (network error, software error, transient telecommunications fault, hacked ?).

    Donald (= Donaldo = Tiptoeturtle, one of my email accounts was spammed by about 20 different female people all called Angel, from various different countries, in 2015, leading to the deletion of an email account I had then and the deletion of my membership here and at RoG. Deleting the targeted email account would have had the effect of generating counter-spam to every subsequent spam message sent to it, sorry about that. I think I have received one spam message in the last two months, "Bank of America" wants to reunite me with $10 million of mine, although Bank of America does not know my name, and I do not have $10 million missing. That is one spam message across all my 25 email accounts)

    *******

    ---Quote (Originally by Donaldo)---
    Alas, I do not know, perhaps someone else can supply an informed answer.

    Even if the top and bottom fit together into a hybrid tailstock, each tailstock is machined accurately to match one and only one bed + and match one and only one headstock combination. Tailstock, bed and headstock each start off with the same matching serial number stamped on all three. They are not intended to be interchangeable. I have bed 1624 with tailstock 1621, that's not a match I am afraid, so I also am set up for taper turning...

    Your next question might be, where do I find a 260 tailstock base ? I have never seen these 260 tailstock bases advertised for sale, and Hercus no longer make such parts. Even finding a complete 260 tailstock by itself in a secondhand auction happens seldom. But a complete 260 tailstock seems to me to be what you need to obtain. When you get a complete 260 tailstock, you will probably find that there is a small error in its alignment with the headstock.

    Australian Metalworking Hobbyist or Moyles Engineering Supplies have some Hercus parts for sale.
    ---End Quote---
    Here is a link to what looks like a 260 base:
    hercus 260 tailstock base--part No.5h71 (hercus 260 tailstock base--part No.5h71)

    As the original tail stock is no where to be found, I will most likely try to convert a 9" tail stock and custom fit it to my current machine.

  7. #22
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    Donald,
    Frankly don't know how to answer that mouthful but I will answer the part I consider applies to the ml018 problem. Tailstocks are ground to suit the head stock height not the bed which is generally the starting datum for every machine. If a used matched set of castings can be supplied or two new castings or a mismatched set of either (all of which I have ) they will only need shimming if low or scrapping if high(which is unlikely). A simpler solution than working from scratch.
    If you search "tailstock" on the AMH website you will find 29 of the 472 listings, that are every new part for a 260 tailstock and a lot of s/hand as well most of the 9" ones, even if not listed, I do have them and haven't had time to list everything. I realise you may feel slighted in some way because of our previous history but we are here to help people with their problems, not have a slinging match because you don't like how I do things.
    Mal

  8. #23
    Join Date
    Apr 2016
    Location
    New South Wales
    Posts
    45

    Default

    Quote Originally Posted by allterrain50 View Post
    Donald,
    Frankly don't know how to answer that mouthful but I will answer the part I consider applies to the ml018 problem. Tailstocks are ground to suit the head stock height not the bed which is generally the starting datum for every machine. If a used matched set of castings can be supplied or two new castings or a mismatched set of either (all of which I have ) they will only need shimming if low or scrapping if high(which is unlikely). A simpler solution than working from scratch.
    If you search "tailstock" on the AMH website you will find 29 of the 472 listings, that are every new part for a 260 tailstock and a lot of s/hand as well most of the 9" ones, even if not listed, I do have them and haven't had time to list everything. I realise you may feel slighted in some way because of our previous history but we are here to help people with their problems, not have a slinging match because you don't like how I do things.
    Mal
    Thanks, this is all good advice, but I think the problem remains with the "failure to communicate".

    ml018 has not come back with the tailstock serial number, and perhaps will not, ml018 is under no obligation to answer questions. Some lathe is missing that tailstock (unless it is from another lathe which ml018 has).

    ml018 has found the 260 tailstock base item in stock at AMH. This development may have not registered with you (Mal) because it is evidenced by the link to the base part on the AMH website in a post from ml018 (#020 Mark I) that subsequently vanished from the thread, which perhaps I (Donald) was the only person to see and/or read ? The disappearance of which may have been affected by my non-disappearing post #20 Mark II. This is another case of "failure to communicate", via disappearing posts.

    I have re-posted ml018's disappearing post #20 Mark I at the end of (within) my follow up post #21.

    My understanding of ml018's disappearing post #20 Mark I is that ml018 does not intend to follow the advice about 260 tailstocks he is being given in answer to his questions. And ml018 may not be intending to reveal the number of his 9" tailstock, which I would narrow down not-very-much to a serial number roughly in the range 10000 to 23000.

    My understanding is also that ml018 does not understand some of the answers he is being given to his questions (or in some cases the answers are more demonstrations of wit by other members than answers).

    This is now post #23, and I am hoping #23 does not get hacked.

    Donald (in case anyone is wondering, I am not ml018 incognito)

  9. #24
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    I suggest you follow the advice in the quoted post herewith. I would think you would be up for many hundreds or thousands of dollars to try to fabricate / cast your own 260 tailstock component/s. But I might be wrong or missing something. We all have something to learn from each other.[/QUOTE]

    I have to appologize for having missed the above from your response.
    Mal

  10. #25
    Join Date
    Apr 2016
    Location
    New South Wales
    Posts
    45

    Default

    Apology accepted, forget it.
    Your Hercus advice is good advice.
    There is still a failure to communicate, some of the good advice is not getting through to ml018. It is usually difficult for a new member to know who they should listen to among the older members, but after a while new members learn from their own mistakes that they should not always listen to themself over the opinions of others. The older members are more likely to have the knowledge and experience required to formulate the correct advice.
    Donald

  11. #26
    Join Date
    Apr 2018
    Location
    Sydney
    Posts
    64

    Default

    Quote Originally Posted by Donaldo View Post
    Apology accepted, forget it.
    Your Hercus advice is good advice.
    There is still a failure to communicate, some of the good advice is not getting through to ml018. It is usually difficult for a new member to know who they should listen to among the older members, but after a while new members learn from their own mistakes that they should not always listen to themself over the opinions of others. The older members are more likely to have the knowledge and experience required to formulate the correct advice.
    Donald
    Where is the serial number located on the 9" tail-stock?
    I have printed a base plate which is almost perfectly centred.
    There is only very minimal offset when I bored a small hole using the tail stock, about less than 0.1mm on the small test piece.

  12. #27
    Join Date
    Jan 2009
    Location
    Holbrook, NSW
    Age
    73
    Posts
    490

    Default

    see attached pic5h072loc.jpg

  13. #28
    Join Date
    Apr 2018
    Location
    Sydney
    Posts
    64

    Default

    Quote Originally Posted by Donaldo View Post
    Apology accepted, forget it.
    It is usually difficult for a new member to know who they should listen to among the older members, but after a while new members learn from their own mistakes that they should not always listen to themself over the opinions of others. The older members are more likely to have the knowledge and experience required to formulate the correct advice
    Donald
    Maybe you should read posts 2-3 times before jumping to a conclusion.
    The serial number I provided is a machine number, which has nothing to do with the 9" tail stock (wondered if anyone knew what year the machine was made in).
    I originally asked if the 9" tail-stock would fit the bed of the 260 lathe, which it did very well.
    Being told that the 9" tail-stock was too low, I still went with it and 3D printed a fairly sturdy adaptor plate which is screwed down into the bottom of the 9" base.
    This raises the top half by about 13.6 mm and almost perfectly centres the tail-stock with the spindle.
    This is enough precision to make the machine usable, and by having the approximate missing height, I can machine a metal version of the plate.

    If you are a very experienced member who knows everything, what process would you recommend for measuring the minimal error in alignment of the tail stock other than getting a new one?

  14. #29
    Join Date
    Apr 2018
    Location
    Sydney
    Posts
    64

    Default

    Quote Originally Posted by allterrain50 View Post
    see attached pic5h072loc.jpg
    Thanks!
    I have taken a look its 12467.

  15. #30
    Join Date
    Apr 2016
    Location
    New South Wales
    Posts
    45

    Default

    On the tailstock I have, which is a different much older version from what you have, given that yours has a lever action clamp which came later, the serial number is at the handwheel end, on the same flat with the two alignment marks. I would expect yours to be much the same as to location of serial number. I have been assuming it has a serial number, but if it was supplied as a replacement part from Hercus it might have no serial number ???

    Supplied as a replacement part: Hercus sold lathes with tailstocks. If a tailstock was damaged or otherwise defective Hercus sold spare parts. If you paid Hercus for a new tailstock then Hercus would send you a new tailstock, but it may not have a serial number on the replacement because the replacement was not necessarily trimmed correctly for the replacement purchasing person's lathe.

    DT

Page 2 of 3 FirstFirst 123 LastLast

Similar Threads

  1. Tail Stock Alignment.
    By wm460 in forum METALWORK GENERAL
    Replies: 28
    Last Post: 2nd Feb 2015, 12:20 PM
  2. Tail stock trouble.
    By cookie48 in forum METALWORK GENERAL
    Replies: 10
    Last Post: 25th Apr 2012, 03:40 PM
  3. Separating tail stock
    By ausdag in forum THE HERCUS AREA
    Replies: 2
    Last Post: 10th Oct 2009, 07:00 PM
  4. Tail stock centre size Help
    By dude09 in forum THE HERCUS AREA
    Replies: 8
    Last Post: 19th Feb 2009, 09:01 AM
  5. Hercus Tail Stock Oiling
    By Penpal in forum METALWORK GENERAL
    Replies: 17
    Last Post: 28th Dec 2007, 05:18 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •