Dean Smith Grace Lathe Owners

[FJsapper]

According to a copy of an original print I have the machines with D1-8 have a taper of 1/4" per foot and the earlier DSG fixing is 1:20 both with a diameter of 2.875" at the big end.

3/4" per foot seems awfully steep for tooling use.

My spindle is fast-lock so maybe that is the difference, it measures out to 3/4” per foot.

 

[Trigga72]

Hi Chaps

I’m halfway through refurbishment of my 13-42 DSG and was wondering if someone could advise me on the best approach to remove the clutch ? I have borrowed a picture from a previous poster as it’s identical to mine . Any advice welcome

Chris

 

[EricF]

Hi. Can someone tell me or show me a picture of where the carriage stop on a type 17 goes? My lathe didn't come with one. Found a picture of one https://dsg31662.wordpress.com/ . Doesn't look too hard to a manufacture but where is it attached on the machine? Thanks

 

[stueeee]

Finally got my 1959 Type 17 running under power. The reverse rotation is via the Red settings on the speed cone, which isn't available for all speeds. I would like to fit a switch which would swap two of the phases of the power feed to provide an electrical reverse. If the switch goes before the power enters the machine, there would be no chance of reversing the machine when it's rotating as the contactor relays would release during the 'break before make' changeover.

My question is, would reversing the rotation of the spindle in this way cause other issues; the pump lubrication and/or Croft clutch are two that I've thought of as possibilities.

 

[M. Moore]

I put a reversing switch on my 13-42 (see pics in first post on this thread) and it works fine. I regularly plug the motor and there are no problems. Three phase motors can reverse at full torque. I use it when I am tapping and need to back out the tap.
I actually just moved the switch as it had been added years before but was completely useless being on the back side of the headstock.
The brake on a three phase motor is just an electronic pulse to slow the motor by utilizing the unique and very handy feature of three phase motors.

 

[stueeee]

According to a copy of an original print I have the machines with D1-8 have a taper of 1/4" per foot and the earlier DSG fixing is 1:20 both with a diameter of 2.875" at the big end.

3/4" per foot seems awfully steep for tooling use.

Just checked the taper on my Type 17 which has the D1-8 mount. The internal taper is definitely 1 in 20. I've also seen a drawing that showed 1/4" per foot, but I think that actually refers to the short D1-8 taper

 

[stueeee]

I put a reversing switch on my 13-42 (see pics in first post on this thread) and it works fine. I regularly plug the motor and there are no problems. Three phase motors can reverse at full torque. I use it when I am tapping and need to back out the tap.
I actually just moved the switch as it had been added years before but was completely useless being on the back side of the headstock.
The brake on a three phase motor is just an electronic pulse to slow the motor by utilizing the unique and very handy feature of three phase motors.

Thanks for that, does seem an obvious solution, especially for tapping screwcutting etc. but seems strange that DSG went to all that trouble to just provide a mechanical reverse on certain speeds.

 

[M. Moore]

Stueee,
My machine is older and has no mechanical reverse of the spindle. I can reverse the leadscrew but not while running. I forgot to check if the oil is flowing when I have it in reverse. Probably doesn’t matter given it is in reverse for such a short time.
I am sure DSG had a very good reason and hopefully someone will chime in who knows as there are some very knowledgeable DSG experts here.

 

[Frederick Harvie]

For sale . 17 X 96 dean smith and Grace . This machine is fully functional but with some wear to the bed. It is located in Dartmouth Nova Scotia Price is $6000 Canadian 0r $4500U.S.The lathe is still under power and In person inspection is welcome .Shipping is the responsibility of the purchaser But I will help to arrange in any way I can .The lathe will be skidded for shipment and loaded on a Truck for free

 

[Overland]

There's a really big piece "worn" out of the bed !
No chuck, is that one of those odd spindles ?
GLWS
Bob

 

[Neil Scully]

I came to do some thread cutting on my DSG 17 for the first time and found that it had been set up for metric pitches 0.5, 1, 2, 4, 8,16 and it did not come with the original gear set. After contacting DSG and failing to get a response I phoned a reasonably local gear cutter I know. They produced the 50 T 12DP 14.5 degree P.A. gear in two working days for the lo cost of £65 so if anyone is in need of change wheels I can highly recommend giving Nik at Phoeniks Gears in Kirton near Boston, Lincolnshire a call. Its a proper Son and Father shop with some fantastic old gear cutting kit that goes back to the 40's.

 

[Frederick Harvie]

There's a really big piece "worn" out of the bed !
No chuck, is that one of those odd spindles ?
GLWS
Bob

Standard D1-8 spindle chuck is included. I should have included it in the picture. Gap is out at the moment but present and included

 

[Bbrally]

DSG 17 X 72 for sale in Vancouver, BC
$3000 CAD.
The ways are quite worn and its missing the gap bed, but everything works well and can be seen running
Craigslist add:

DSG 17 X 72 Lathe - tools - by owner

Dean Smith and Grace 17 X 72 Lathe 7.5HP 3PH 440V motor 208V/440V 3PH 15KVA transformer 12" 3-jaw chuck 16" 4-jaw chuck Follow rest Steady rest Coolant pump All change gears (metric/imperial)...

vancouver.craigslist.org

 

[Tyrone Shoelaces]

Nice looking lathe but the missing gap piece is a deal breaker for me. How do people lose the gap piece !

Regards Tyrone

 

[Limy Sami]

IIRC, the motors mounted like that indicate an older (and possibly) slower model.

 

[Tyrone Shoelaces]

IIRC, the motors mounted like that indicate an older (and possibly) slower model.

Do you get the feeling that motor isn’t the original motor Sami ?
It doesn’t say “ DSG“ style to me.

Regards Tyrone.

 

[Limy Sami]

Do you get the feeling that motor isn’t the original motor Sami ?
It doesn’t say “ DSG“ style to me.

Regards Tyrone.

Very much so, probably something to do with British V US motor frame standards variations.

FWIW I reckon that machine is late 50's early 60's.

 

[M. Moore]

The motor is the original. Identical to the one on my machine, see the first post in this thread……
Over here no one knows to “mind the gap” so not surprising it is missing.

 

[Tyrone Shoelaces]

The motor is the original. Identical to the one on my machine, see the first post in this thread……
Over here no one knows to “mind the gap” so not surprising it is missing.

Must be a special for the “ colonies “then. I can’t say I’ve seen one like it over here.

Regards Tyrone

 

[Milland]

Must be a special for the “ colonies “then. I can’t say I’ve seen one like it over here.

Regards Tyrone

Maybe they were sourcing a 60Hz rather than 50Hz motor?