I’ve now collected the DVSL, installed it and had a brief play with it.
I found it quite difficult to find information on this lathe so I’m posting here the information gained from Duncan and other investigations in case it helps anyone else.
Spec:
Direct drive motor with no belts, pulleys etc.
Electronic control on moveable magnetic control box.
Digital speed reading.
Reverse possible by pressing a button.
Headstock 2MT fittings are ejected from the headstock by unscrewing the thread protector.
Tailstock 2MT is self ejecting.
Speed from 0 – 2900 rpm. Yes, 1 rpm is possible (and v e r y s l o w)
Swivelling headstock (360 degrees). No detents.
Off bed support for tool rest banjo for off centre turning. Seems very rigid and stable but not yet tested.
Headstock can be repositioned anywhere along the bed.
There is an off bed attachment for off centre turning.
Large swing over bed, max diameter 16” (410mm).
Between centres 36” (920mm).
Headstock spindle thread M33 x 3.5.
Tool rest diameter 25mm.
I've seen weight stated as 102kg but I think that refers to the lathe. The stand seems to be extra and is also heavy.
The inverter is a 650 series sold under the name of Parker. Inside, mine has a label marked “02/09” so I guess it’s a 2009 lathe.
The model number printed in the inverter gives the spec – see the 650 manual. (see the Parker site).
Mine is 650V/011/230/0/00/DISPR/UK/RS0/0. I’ve deduced the following spec.
650V Generic Volts
/011 011 = 1.1kW
/230 230 = 220 to 240V (±10%) 50/60Hz
/0 0 = Internal RFI Filter Not fitted
/00 00 = Standard Eurotherm Drives Livery
/DISPR DISPR = RS232 Keypad fitted (remote mountable).
Block 8 must = RS0 with this selection.
/UK UK = Language, English (50Hz )
/RS0 RS0 = RS232 port (drive uses RS232 Keypad)
/0 0 = Standard Product
The label gives the input current (220 – 240V) as 13.8A and 3ph output at 5.5A.
Although I’ve been told that the DVSL has a 1HP motor, the inverter spec shows 1.1kW and it’s much bigger than my Axi 1HP motor so I think it’s probably a 1½hp motor(?). There is no motor spec plate.
My first impressions:
Nice quiet torquey motor with good controls.
Lathe bed milling lines are slightly more pronounced than my Axminster but it’s smooth, well aligned and everything works well.
The tailstock and toolrest banjo slide and lock nicely (now I’ve removed the surface rust and gone over them with wire wool and oil).
The tool rest banjo assembly is quite basic but it’s heavyweight, locks absolutely solidly but adjusts and releases easily - I can’t imagine it slipping or moving unless I release it, which of course, is exactly what is needed! The rest of the lathe and fittings are fine.
The bed base and stand design could have been made quite a bit shorter to give the same usable bed length. I guess they made it longer to add to stability (which is very good).
The electronic control is good and smooth but it needs several full revolutions of the potentiometer to go from lowest to highest speeds. I can’t see a way of altering the programming to alter that but actually, it doesn’t matter much.
The spindle height on the stand is higher than my elbow so duck boards might be needed for short a***s like me.
There's no detent on the headstock so a kiss test is needed for alignment when returning it to it's normal position after having swivelled it.
The capacitors can hold charge for a short while even if turned off so pressing the start button when off could initially result in small movements.
Plusses
Smooth powerful motor
Digital control
Reverse
Big capacity
Electronic speed control enables fine work
Very stable, even without bolting down
Flexible speed control
Minuses
Sorby type modular toolrests are fine for bowls but don’t reach close enough to small diameter spindle turning items so an offset type toolrest is also needed
Speed control potentiometer is low geared
Quite large but very steady
All in all, it’s a nice lathe to use and suits my current needs so I’m happy.
Brian