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9th June 2015, 10:38 PM #31.
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9th June 2015, 11:03 PM #32GOLD MEMBER
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- May 2011
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- Murray Bridge SA
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9th June 2015, 11:12 PM #33Intermediate Member
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- Jun 2012
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- ex Perth, now Mittagong
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- 41
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
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9th June 2015, 11:35 PM #34Senior Member
- Join Date
- Feb 2012
- Location
- Willunga
- Posts
- 140
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
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17th June 2015, 06:20 PM #35Senior Member
- Join Date
- Feb 2012
- Location
- Willunga
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- 140
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
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17th June 2015, 06:54 PM #36.
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- Nov 2008
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- Perth WA
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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 - https://www.woodworkforums.com/showth...19#post1350219
Bob.
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17th June 2015, 07:16 PM #37Senior Member
- Join Date
- Mar 2014
- Location
- South of Adelaide
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- 177
I get my wheels from Webber abrasives at Welland. They sell Norton wheels never had any problems. The grinder looks great, good job.
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17th June 2015, 07:29 PM #38Senior Member
- Join Date
- Feb 2012
- Location
- Willunga
- Posts
- 140
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
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17th June 2015, 09:27 PM #39SENIOR MEMBER
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- Jun 2011
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- Australia east coast
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- 71
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17th June 2015, 09:36 PM #40Senior Member
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- Feb 2012
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- Willunga
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- 140
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18th June 2015, 12:54 AM #41.
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- Perth WA
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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
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18th June 2015, 04:21 PM #42GOLD MEMBER
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- May 2011
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- Murray Bridge SA
- Posts
- 2,956
From your second picture, it looks like it was found in a chook yard
Kryn
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18th June 2015, 04:44 PM #43.
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- Nov 2008
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- Perth WA
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- 71
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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
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18th June 2015, 08:04 PM #44Senior Member
- Join Date
- Feb 2012
- Location
- Willunga
- Posts
- 140
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
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19th June 2015, 09:38 AM #45.
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- Nov 2008
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- Perth WA
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- 71
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- 5,641
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.