Graham-ophones

Links

ARTY GB (1) copy Zwarteschijf

Various Parts

Ken Priestley

Leather cloth

F R Ratchford J Hewitt

Diaphragms

Meadows and Passmore

PLEASE NOTE:

I DO NOT SUPPLY

ANY PARTS

I'M MERELY

A COLLECTOR.

Garrard Motors

Thus far it's been my experience that whilst HMV motors have been the easiest to work on they have needed that work the most.  Garrard motors, even those yet to be serviced, have not had the problems, in particular associated with the hardening of their greaseas experienced on most if not all unserviced hmv MOTORS, and are running reasonably well.  However if anything needs to be done that requires dismantling they can throw up problems.  

 

Garrard motors were used in a number of manufactuers gramophones, notably Columbia and Decca.  The wide range of models varied in a number of ways including the manner with which the spring case lid was fitted, single or double spring and whether or not the bearings supporting the governor shaft were eccentric in design or central i.e. whether the hole in the bearing to take the shaft was centrally positioned or placed off centre to allow for wear.  Despite the large number of models there were many similarities the most significant of which is the way in which the governor armature is fitted.  When adjusted correctly the Garrard motors are probably the sweetest running of all gramophone motors but following servicing, adjustment to establish sweet running at the correct speed can be a difficult and time consuming process.  In order to do this I engage upon a method which works but I cannot recommend as it not without it's dangers both to the person doing the adjustment and the motor itself.  This is explained in video No. 2  below dealing with servicing a typical Garrard motor, the model No. 14 motor. Much of the contents is applicable to other models.  Video No. 3 looks at some variations found on Garrard motors as well a explaining a safer way of setting the correct position of the governor armature.  It also explains one or two things of a general nature relating to governors.

 

In video No. 3 I refer to calibrating the speed of the turntable and show two devices, the strobe disc and the digital tachometer.  Obviously you can use one or the other for both stages of the calibration process.  I used two methods just to give alternatives. For more information on the two methods see the video on the Speed Calibration tab.

 

 

The Garrard motors in my collection can be found on the Graham-ophones website covering two pages.

Click on thumbnails for larger image