Search found 283 matches

by Pete.
Thu 05 Oct , 2017 18:15 pm
Forum: Denford Classifieds
Topic: Viceroy metric lathe ex school)
Replies: 2
Views: 2868

Re: Viceroy metric lathe ex school)

The cross slide screw is 1/2" diameter 2.5mm pitch LH modified square section thread which means that it is almost square with just 5 degrees flank angle each side. You'd have to either grind a tool to turn a nut or make a tap to suit. Another option is to make a nut from delrin, following the instr...
by Pete.
Fri 25 Aug , 2017 18:29 pm
Forum: Vintage Pictures
Topic: Introduction of a seldom version of Viceroy 280 VS
Replies: 2
Views: 21868

Re: Introduction of a seldom version of Viceroy 280 VS

The cross slide screw is indeed 1/2" diameter 2.5mm pitch. They simply changed the inch screw's pitch from 10tpi to 2.5mm to make it a metric screw.
by Pete.
Tue 08 Aug , 2017 17:33 pm
Forum: Viceroy
Topic: synchro 280 headstock oil
Replies: 2
Views: 4703

Re: synchro 280 headstock oil

My gears had certainly swollen. It caused the teeth to bind and made the mounting holes go over-sized as I found out when I had to dismantle it. I don't know that it's a problem with the oil so much as with the Technyl A90 plastic, whatever that might be, absorbing it over the long term - I couldn't...
by Pete.
Wed 02 Aug , 2017 22:24 pm
Forum: Viceroy
Topic: viceroy 280 synchro electrical issue
Replies: 11
Views: 8978

Re: viceroy 280 synchro electrical issue

Aah yes, that would make sense. It would be worth asking if the DC braking actually ever worked. If the spindle didn't ever seem to be braked then the best thing to do would be to disconnect the braking system altogether. The lathe will work perfectly without it.
by Pete.
Wed 02 Aug , 2017 21:47 pm
Forum: Viceroy
Topic: viceroy 280 synchro electrical issue
Replies: 11
Views: 8978

Re: viceroy 280 synchro electrical issue

My machine didn't have any such PCB, and it doesn't seem to be shown in that wiring schematic Andy posted. I wonder if it is part of the optional DC-injection braking system, or perhaps something that was added on later machines, or maybe your lathe was once a combination lathe/mill variety? The onl...
by Pete.
Wed 02 Aug , 2017 18:32 pm
Forum: Viceroy
Topic: viceroy 280 synchro electrical issue
Replies: 11
Views: 8978

Re: viceroy 280 synchro electrical issue

I just noticed you said a relay controls the contactors, Mine didn't have any relays the buttons acted directly on the contactors themselves. Here is what I had in my Synchro.
by Pete.
Wed 02 Aug , 2017 18:24 pm
Forum: Viceroy
Topic: viceroy 280 synchro electrical issue
Replies: 11
Views: 8978

Re: viceroy 280 synchro electrical issue

Compare the pull-in coil resistances. If they are the same then check the mechanical interlock is functioning properly and go over all your electrical connections. If the suspect coil has a different resistance to the other two, you could sacrifice the coolant pump coil for the motor contactor.
by Pete.
Wed 02 Aug , 2017 16:46 pm
Forum: Viceroy
Topic: viceroy 280 synchro electrical issue
Replies: 11
Views: 8978

Re: viceroy 280 synchro electrical issue

Has the lathe been converted to run on single phase? If it has, the voltage is not enough to hold the contactors in properly. I had to modify mine to work on 240v.
by Pete.
Thu 13 Jul , 2017 18:17 pm
Forum: Viceroy
Topic: Acceptable Motor Temperature??
Replies: 9
Views: 9281

Re: Acceptable Motor Temperature??

If what he said is true why aren't there melted single phase motors on lathes all over the country? I had a single phase motor on my viceroy it never got more than warm even after multiple stop-starts. Have one on my mill it doesn't either. That 'tech' is spinning you a yarn to cover up the fact tha...
by Pete.
Wed 12 Jul , 2017 19:06 pm
Forum: Viceroy
Topic: Acceptable Motor Temperature??
Replies: 9
Views: 9281

Re: Acceptable Motor Temperature??

Doesn't sound right. I have stop/started my lathe probably two dozen times in an hour without the motor suffering. I don't think that putting holes in the cabinet will help at all. It's not like the door seals or anything there's plenty of placed for air to get in. I would get in touch with the supp...
by Pete.
Mon 29 May , 2017 20:18 pm
Forum: Viceroy
Topic: TDS 1/1 Cross Slde Micrometer Dial Problem
Replies: 3
Views: 5013

Re: TDS 1/1 Cross Slde Micrometer Dial Problem

Les your 2.5mm screw should be 0.0984" so it's only half a thou out which could be wear in the screw. dakes55 the first thing to ask is are you working it all in one direction, in other words turn the screw clockwise until the dial gauge reads zer, then zero the cross slide dial, then make one turn ...
by Pete.
Sun 28 May , 2017 13:00 pm
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 12755

Re: Turning parts with features on reverse

That's it, it's a bit of a long-winded process especially with a bolt-on chuck mount. Get it close and use a pair of same-size feelers to measure the backplate gap. keep going up in sizes until the feelers are snug both sides then check that you haven't jacked it off the taper by Say you have 5 thou...
by Pete.
Sat 27 May , 2017 12:58 pm
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 12755

Re: Turning parts with features on reverse

Right, well since Paul Compton says in that thread that it compares to DIN 55021 with it's 7.125 degree taper angle (which happens to be 1:8 taper), and since that taper angle is exactly the same as camlock, and since Denford supplied lathes with d1-3 camlock taper, it's a fairly reasonable assumpti...
by Pete.
Fri 26 May , 2017 15:12 pm
Forum: Orac
Topic: Turning parts with features on reverse
Replies: 9
Views: 12755

Re: Turning parts with features on reverse

Why do you say the the spindle nose geometry is unknown?
by Pete.
Fri 19 May , 2017 12:20 pm
Forum: Viceroy
Topic: TDS 1/1 GBL Lead Screw Dial
Replies: 11
Views: 9678

Re: TDS 1/1 GBL Lead Screw Dial

The thread dial has a peg sticking out of it that plus intonation hole and it's secured by a grub screw.
by Pete.
Tue 16 May , 2017 20:50 pm
Forum: Viceroy
Topic: TDS 1/1 GBL Lead Screw Dial
Replies: 11
Views: 9678

Re: TDS 1/1 GBL Lead Screw Dial

Put up some photos I'm sure we'll get it sussed.
by Pete.
Mon 15 May , 2017 18:03 pm
Forum: Viceroy
Topic: TDS 1/1 GBL Lead Screw Dial
Replies: 11
Views: 9678

Re: TDS 1/1 GBL Lead Screw Dial

You don't strictly need a dial if your motor reverses. I never used a dial on any of my lathes. You can just back the tool out, reverse the motor and run the carriage back to the start of the thread.
by Pete.
Wed 26 Apr , 2017 12:18 pm
Forum: Viceroy
Topic: New 280VS owner
Replies: 3
Views: 4604

Re: New 280VS owner

The dragging screw could possibly be sorted by adding a washer inboard of the tailstock-end support block between the thrust washer and the screw shoulder. You could even just try loosening the screw that holds the block and tapping it gently towards the headstock. That tails-stock block is what set...
by Pete.
Sat 15 Apr , 2017 9:42 am
Forum: Viceroy
Topic: TDS 1/1 Feeds and speeds plate
Replies: 8
Views: 9283

Re: TDS 1/1 Feeds and speeds plate

Ok send me a message with your address, pay the postage and it's yours. I seriously recommend you make your best effort to change that front plate without removing the gear change lever though. It has an odd number of splines and teeth on the rack gear and if the pinion disengages it's easty to tras...
by Pete.
Fri 14 Apr , 2017 23:43 pm
Forum: Viceroy
Topic: TDS 1/1 Feeds and speeds plate
Replies: 8
Views: 9283

Re: TDS 1/1 Feeds and speeds plate

Is this the thing you need?