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  1. #31
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    66
    Posts
    6,065

    Default

    Quote Originally Posted by TheNutter View Post
    Hi Bob

    Mine has a 'T' handle to lock the table feed hand wheel but no brass tip, unfortunately. However even with the shaft locked there is still a whisker of movement in the table, I will measure it later. There must be a small gap between the pinion teeth and the rack teeth which I can feel.

    I reassembled the spindle yesterday and the information the you sent me really saved my bacon. I hadn't paid enough attention to the correct orientation for all of those springs when I took it apart! Thanks.

    I put the collets and all of the rusty small parts from the accessories into vinegar overnight. Not as some here said in order to make pickles but rather to remove the rust. This has worked really well. I gave them a rough scour this morning before putting them back for the full 24 hours. After this they scoured off really easily. Once cleaned a surface of flash rust quickly formed which I have here converted with some phosphoric acid. I will clean the surface again in the morning and then oil them for storage or reassembly.

    Regards

    Ian



    Attachment 349568
    So Ian, are the parts on the right of the photo treated with phosphoric acid? The colour suggests they are. And there is a whisker of tooth play on the grinder in my shed too.


    Quote Originally Posted by Peter Fou View Post
    Bob, the table lock was my creation, I had no idea what the original looked like so I made a quick & dirty fudge. Being virtually out of sight I went for function not beauty.

    Peter
    Talking of beauty Peter, how is the azure blue FP1?

    Bob.

  2. #32
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    66
    Posts
    3,434

    Default

    Quote Originally Posted by TheNutter View Post
    Hi Bob

    Mine has a 'T' handle to lock the table feed hand wheel but no brass tip, unfortunately. However even with the shaft locked there is still a whisker of movement in the table, I will measure it later. There must be a small gap between the pinion teeth and the rack teeth which I can feel.
    Hi Ian.
    Something I read somewhere, an easy way to put a brass tip on it, is to drill a small hole and fit a brass electrical screw in it. Drill it a few thou undersize of the screw thread, so that force is used to insert and hold it.
    Kryn

  3. #33
    Join Date
    Jun 2012
    Location
    ex Perth, now Mittagong
    Posts
    77

    Default

    The FP1 is up and running, the colour is quite fetching!! Everything on it is in superb condition, it had a very sheltered existence in its formative life and should be good for another 51 years (not that I will be around for that anniversary). The workshop is functional at long last so I will get on with the things which were interrupted 18 months ago.

    Peter

  4. #34
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    104

    Default

    Thanks Kryn.

    Bob, Both lots have had the phosphoric acid but for some reason the collets have gone black, a very different steel I imagine? It may come off when I clean them up in the morning.

    Regards

    Ian

  5. #35
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    104

    Default

    Well Telstra have finally reconnected us to the world so I thought that I would do an update with where I have got to with this. The machine is fully back together and I have cleaned up and reassembled all of the accessories, I have found nothing broken or seriously worn, which given the apparent state of the machine when I started seems to be little short of a miracle. I have to get new belts for the main spindle, I reassembled it with the old belts which was a mistake.

    IMG_0313.jpg

    In this photo the workhead is mounted to the table and the internal grinding spindle is mounted to the main spindle head. I am missing the the pulley and belt that enable the main spindle to drive the internal grinding spindle. Sitting on the table are two positioning blades - not sure if that is the correct name? Also on the table are the collets, the 5 on the right are all 3mt. I don't quite understand the one in the centre?


    IMG_0312.jpg

    In this photo the driven centre and the tailstock are sitting on the table. To the right is the holder for the positioning blades.

    A number of things are missing from the machine, but fortunately nothing that I can't make (I think...hope...). The project list now includes

    Pin spanner for the main arbor nut.
    Bracket to hold the LH end of the main table (one is there, but it looks to me like there should be two)
    Thumbscrew for the Y axis scale
    Pulley to drive the the internal grinding spindle from the from the main arbor (this is the most challenging job as it runs around 3K rpm)
    Pin to hold the guards for the main spindle.
    One long one short T bolt.
    Grinding wheel dresser (I have ordered a diamond dresser as the basis for this)

    I now need to order some cup wheels, should I just get them from Blackwoods or is there a specialist supplier?

    Regards

    Ian






    IMG_0313.jpgIMG_0312.jpg

  6. #36
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    66
    Posts
    6,065

    Default

    Hello Ian,

    I am intrigued by your workhead. It is considerably different to the one I have. The base casting is also different. The spindle has a very useful threaded nose, useful if you have a 9" Hercus lathe that is. I look forward to a dissection.

    I can furnish you with photos and dimensions of your missing parts along with details of a belt supplier for the internal grinding spindle. I purchased a green Norton cup wheel from the States on eBay. Cheaper than anything of quality locally.

    I experienced some disappointment with a locally purchased wheel - http://www.woodworkforums.com/showth...19#post1350219

    Bob.

  7. #37
    Join Date
    Mar 2014
    Location
    South of Adelaide
    Posts
    498

    Default

    I get my wheels from Webber abrasives at Welland. They sell Norton wheels never had any problems. The grinder looks great, good job.

  8. #38
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    104

    Default

    Thanks Bob, some photos and dimensions would be really helpful, no urgency.

    I will get dissecting.

    As it happens I don't have a 9" Hercus Lathe but it does match the spindle on my dividing head so I have a backing plate and a presently unmounted small 3 jaw chuck which I have been wondering vaguely what to do about...

    Regards

    Ian

  9. #39
    Join Date
    Jun 2011
    Location
    Australia east coast
    Age
    65
    Posts
    2,313

    Default

    Quote Originally Posted by TheNutter View Post
    I now need to order some cup wheels, should I just get them from Blackwoods or is there a specialist supplier?
    I have quite a few brand new aluminium oxide cup wheels I got from the Grays QANTAS auction last year but I won't be back home until August. I got them for my Hercus T&C grinder but at my current rate of use, it's 5 lifetimes worth.

    PDW

  10. #40
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    104

    Default

    Quote Originally Posted by PDW View Post
    I have quite a few brand new aluminium oxide cup wheels I got from the Grays QANTAS auction last year but I won't be back home until August. I got them for my Hercus T&C grinder but at my current rate of use, it's 5 lifetimes worth.

    PDW
    Thanks very much PDW! I would be pleased to buy a lifetime or twos supply when you are back. Please PM when convenient.

    Cheers.

    Ian

  11. #41
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    66
    Posts
    6,065

    Default Less Intrigue

    Ian,

    It turns out that the workhead on your grinder was originally a No.3 accessory. The head I have features a cotter type spindle lock, yours would have locked by means of an indexing plunger engaging a notch in an indexing plate.

    Bob.


    Hercus%203%20T%20and%20C.jpg p5120280%20(Large).jpg

  12. #42
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    66
    Posts
    3,434

    Default

    From your second picture, it looks like it was found in a chook yard
    Kryn

  13. #43
    Join Date
    Nov 2008
    Location
    Perth WA
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    66
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    Quote Originally Posted by KBs PensNmore View Post
    From your second picture, it looks like it was found in a chook yard

    Kryn
    KB,

    The photo was one of a number sent to me by Mark Harriss" Graziano", a former forum member. The grinder is owned by a bloke who manufactures fuel injectors and it is still in use! Here's another photo. A belt change and it'll be good for another 50 years!

    BT

    p5120269 (Large).jpg

  14. #44
    Join Date
    Feb 2012
    Location
    Willunga
    Posts
    104

    Default

    That is really interesting Bob, all the accessories with mine have the bed number (719) stamped on them so they belong together. It looks like mine is an early one, perhaps transitional?

    IMG_0314.jpg

    IMG_0315.jpg

    The workhead body and the base castings look exactly the same but the intermediate casting is different because on mine the motor is on a horizontal mount rather than the vertical mount shown in your 3A photo.

    This encouraged me to do some dissection!

    IMG_0316.jpg

    This is the exploded view, showing all the components except the screws. I have removed the back bearing and left the front one in place. The bearings are FBC (Fafnir?) EE10. The spindle has Fafnir 204K C4 so I think that it is probably all the original bearings still in place.

    IMG_0317.jpg

    In this view I have put all of the castings into the correct orientations. I am sure that you are right about the spindle lock, which I don't have. The indexing plunger would mount into the slot on top of the casting and engage a disc mounted in place of the pulley which is only retained by 4 screws.


    IMG_0318.jpg

    Hard to see but in the front of the casting there is a groove with a small (app 1/16") ring of felt, this is the only oil seal in the whole thing.

    With a light set on the bearings and some oil it is a very low friction assembly. There is just a little friction against the felt.

    The tailstock shown in your last photo is also interesting. The spindle appears to be threaded, advanced by the handwheel and locked by the T bolt. Mine has no handwheel, rather it is sprung with a lever underneath it to withdraw the spindle.

    Regards

    Ian

    IMG_0314.jpgIMG_0315.jpgIMG_0316.jpgIMG_0317.jpgIMG_0318.jpg

  15. #45
    Join Date
    Nov 2008
    Location
    Perth WA
    Age
    66
    Posts
    6,065

    Default A Brochure Revelation

    Thank you for the dissection and the photos Ian.

    I have two different No.1 brochures, both with Hercus' address at 56 Dew Street, Thebarton, and no printing date. Both brochures list a universal work head, the more comprehensive 8 page version shows numerous illustrations of the head like mine, the other 4 page version shows yours.

    I find it interesting that the more useful screwed spindle nose was abandoned when Hercus produced the alternate head. Chuck mounting on mine necessitates the installation of a screw nosed arbor in the spindle. Whilst Peter provided me with a comprehensive selection of 3 Morse collets, they run out of puff at 1/2" , not the 3/4" bore access you have. A useful feature they did incorporate into the spindle was a section of 1" parallel bore which accommodates various bushes. Peter had made a number, some to suit various square section tooling -

    DSCN6113 (Large).jpg

    The felt seal is interesting. I will have a look to see if something similar could be installed before the bearings in my head given that I will more than likely use unsealed Timkens.

    Bob.
    Attached Images Attached Images

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