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Thread: waldown NH3 parts required
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11th July 2014, 10:05 AM #1GOLD MEMBER
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waldown NH3 parts required
In the Herbert hi-speed resto thread Joe asked for pics of my NH3 parts requirement, so rather than hijack mgtoolmakers thread here they are
20140710_175646[1].jpg20140710_175707[1].jpg20140710_175725[1].jpg20140710_175739[1].jpg
pic 1 is looking down onto spindle drive pulley
pic 2 is is left side of spindle housing
pic 3 is looking up from table into spindle housing
pic 4 you will need to laydown on your left side...its the ride side of the spindle housing where the pinion, handle, spokes etc etc would be
I want..err need all the bits that fit in there except the drive stuff...bearings I can buy of the shelf.
Brobo threw all the parts out a few years ago.....apparently, or so they said when I enquired
an option...stick it on fleabay as is....lol
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11th July 2014, 11:46 AM #2
So would you go to the effort of making the missing parts if you had the details?
Let me know as I'd be prepared to dismember mine and either draw them up or send them to you to copy.Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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11th July 2014, 12:15 PM #3GOLD MEMBER
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mmm I think I have found my parts......."Let me know as I'd be prepared to dismember mine and send them to you"......WOW what a offer
can anyone else can see any other words..?
I have thought about it often, and it keeps sitting in the corner,..mainly due to the fact there is so much else I want and need to do..like making cannons.
I am thinking that I will do it but when I retire...in about another 2 years...need to get my son thru his apprenticeship, so I have to keep working to do that.
Thanks for offer Joe, but not yet...wait till I retire..it aint going anywhere unless I get offered a good price for it
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11th July 2014, 04:54 PM #4
Ok, it will still be here in two years' time...
Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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11th July 2014, 11:36 PM #5GOLD MEMBER
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12th July 2014, 12:02 AM #6SENIOR MEMBER
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+1 from me too Joe and Kryn. A very generous offer and the spirit in which it is made is what makes this forum really great, WELL DONE!
Rob.
PS. If you do end up doing the drawings of the parts Joe, hopefully they might end up in some sort of archive or a sticky posting, for future rebuilders. RG.
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13th July 2014, 11:55 PM #7
Thanks guys. Others here have gone out of their way for me. That's how it works....
With all this talk about NHs, I had a closer look at mine since I wanted to put it back to 3-phase - given the recent purchase of a very cheap caseless VFD...
So I pulled the original motor out from under the bench and removed the single phase motor (which looked all wrong anyway - too tall).
This is what it looked like before the change to single phase:
IMAG0715.jpg
...definitely just a 3-wire star connection....
Here is the 4-speed belt and pulley arrangement:
IMAG0718.jpg
Just to refresh, this is the only NH I have ever seen with a separate table and low base:
IMAG0714.jpg
Here is the 3-phase motor back on, after a very uneventful finding of the star point and bringing the three wires out into the terminal box. Meggered at 80MOhms at 1000V...
I screwed the VFD to the side of the cast iron terminal/switch box and wired it all up (control wires to an emergency switch and relocated potentiometer to go). I'll make up a slim sheetmetal enclosure of just the electronics and leave the entire aluminium heatsink out in the open. I'll then fit the latching mushroom switch and pot into the front face of that. I'll take a photo when completed. Should sort of blend in with a lick of matching paint.
IMAG1348.jpgIMAG1351.jpg
Anyway, it works like a charm. The motor starts at 1.5Hz even in top 'gear' and runs smoothly up to 100Hz. That's the limit I set because the motor has a sheetmetal fan with bent-up fins. I don't want to tempt that into deforming....
Theoretically, that puts the spindle at 24000rpm
Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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14th July 2014, 12:36 AM #8
This is a little hijack of the thread, sorry Eskimo.....
While I had all the tools and 'stuff' on the bench for extracting star points, I finished off a couple more motors that had been half disassembled for a while....
First is the little 1/2Hp 1425rpm. I mentioned the other day that it had wasp nests right through all the cooling channels. It needed finishing off.
Since this one was going to be tricky, to help find the star point, I took some photos at the time (which you can blow up on the computer for a closer look). Might help someone else along the way.
All the connections between coils were in braided sleeves and all tucked into a very narrow space between the coils and the stator housing. I had to cut a lot of the ties and gently lift out several of the sleeves to find the star point tucked underneath a bundle of these sleeves.
This motor had some kind of grease film over everything inside and out - it came from the local woolen mill. Might be lanolin.... wipes off with white spirits easily though.
IMAG1328.jpgIMAG1329.jpg
It's got to be in here somewhere.... The wasps had fun in the cooling channels - poked most of their nests out already.
IMAG1333.jpg
Ah, here it is... the sleeve across the centre was pushed in over the top of the 3-wire junction....
IMAG1334.jpg
3 new wires attached and being double shrink sleeved...
IMAG1345.jpg
brought out in the terminal box and connected in Delta mode to the existing 3 wires.
IMAG1347.jpg
All finished, tested and given a lick of paint after internal and external cleaning...
That's a little Siemens 1/2Hp VFD. The flash obsured the cover.
IMAG1354.jpg
This afternoon I continued on a big old 2.9Hp motor.
IMAG1353.jpg
That one was totally easy. Plenty of room to work and see and the 3-wire junction in plain view with long sleeved leads to join to. Tied everything up again (blue tape) and drenched it all in epoxy. The heatgun on low heat made the epoxy run into the fabric and into the coils properly and ensures nothing vibrates loose. I discovered that trick with the 1/2 Hp one - it's very cold here at the moment and the epoxy is quite stiff.
IMAG1352.jpg
Back to the original thread.....Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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14th July 2014, 09:12 AM #9GOLD MEMBER
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No problems Joe
Your NH hasnt had the head put on another base has it?...your base definitely looks different to the drawings that Brobo sent me...could that explain why you also have a table?
NH3_Page_1.jpg
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14th July 2014, 10:43 AM #10GOLD MEMBER
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5 page parts diags for earlier waldowns
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14th July 2014, 12:50 PM #11
My guess is that the Bendigo Ordinance Factory in its day asked Waldown to assemble it this way - rather than mixing and matching parts of machines themselves. However, the table is a fixed one - no rotation. Maybe that was used on a different model again?
The machine was built on a strudy wooden cupboard painted the same colour as the drill press.Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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14th July 2014, 01:00 PM #12GOLD MEMBER
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14th July 2014, 05:47 PM #13
Yes, it does, but it's smaller. Remember I recently restored one for my SIL. I compared them side by side. But both the table and the base look much bigger than they need to be - the drill centre is nowhere near the middle of the table.
Cheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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14th July 2014, 11:46 PM #14SENIOR MEMBER
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Thanks Eskimo for the parts diagrams, these will be very helpful for re-builders of these drills. I hope that they can be given a space on the forum where they can be easily accessed, even years later - perhaps in some kind of machinery manuals area. My apologies in advance moderators and site owner if such a facility already exists, but if it doesn't, may I respectfully suggest that it might be an idea to have a section for manuals, drawings and layout diagrams for machines and components so that the info can be readily accessed.
Rob
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15th July 2014, 12:19 AM #15Senior Member
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[/QUOTE]
Theoretically, that puts the spindle at 24000rpm
Hey Joe
That speed should be good for those .001mm drill bits.
Roger