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Colchester Student owner's question

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StevieD	02/11/2010 13:43:47
2 forum posts	Hi, I'm looking for someone who owns a round head Colchester Student Mk1. I've resently bought one and want to confirm the diameter of the double v-belt pulley wheel mounted on the motor. Hopefully someone can take some measurements and let me know. Thanks, Steve,
JDEng	02/11/2010 18:47:54
27 forum posts	Steve, Have you considered telephoning or emailing Colchesters? They are now part of the 600 Group but their technical support department might be able to help. I appreciate that it's an old lathe but they have always been most helpful whenever I've called them. John.
Jolyon de Fossard	15/10/2012 21:59:13
15 forum posts	Did you ever find this out ? If not; let me know and I'll nip off to the workshop with my calipers. Yrs, Jolly
Geoff Smith 3	08/04/2013 22:59:05
1 forum posts	On my mark 1 Student the pulley is 5 inches - same as the top one with the brake assembly. it will shortly be 125mm in diameter when I've got around to replacing the old temporary (since 1990!) single phase 2.2kW (3 HP) with a new 3 phase inverter powered motor. The error is around 79thou. I'm working out how to switch the inverters 24 volts control line so I can keep the on/off lever, brake, and reversing switch. I've been told that the three phase switches at the rear of the headstock are not suitable for 24 volts. If so it's probably going to be microswitches round the back. The coolant pump may well remain as the cheapo 240 volt one from Graham Engineering of Roebuck Lane. Naturally there will be a big red stop button somewhere on the outside of the black box that used to house the Crabtree contactors. I'm hoping this will stop the ripple marks on cuts, due I'm told to a single phase motor!!! Geoff

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