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Member postings for David Tweedale

Here is a list of all the postings David Tweedale has made in our forums. Click on a thread name to jump to the thread.

Thread: Colchester Master 6" (Round head)
23/11/2009 19:45:52
Many thanks for your help.
I have in the mean time been in touch with a lathe manufacturer up country who knows the 'round-head' Colchester well. He advises that it wouldn't have been designed to run with a 1hp single phase initially (even though it has managed for years). He told me to go for a same speed (1425rpm) 3hp single phase with capacitor start and capacitor run set up. I have one but think its capacitor start only. Not sure if it can be modified. Looking into it as I'd rather use this than fork out £100+ for a chinese built bag of nails off Ebay!
Thanks again,
17/11/2009 11:47:18
Hi all,
I'm new here, joining expressly to ask for advice.......
My motor has gone fizz-bang! It is a twin coil type with high torque start up until centrifugal segments fly out and short out the start up coils, allowing the motor to run at normal speed. Its been for repair once before at a local 'specialist' who couldn't get a circular spring to replace the broken one that maintains the segments in place when stationary. I found one on the inner seal of a large oil seal that fitted and worked for years. It is still intact but the problem is to do with the segments themselves and the carrier they sit in. Its all wearing and I'm losing so much machining time, I've decided to get a new motor. Here in lies the problem. The 'specialist' has no idea what motor to get in its place. Feet spacing, shaft diameter and height above the feet not a problem. I can 'engineer' to suit the lathe. Start up torque and running torque while machining need to be high. Can anyone suggest a modern motor that can satisfy my requirements? My motor is a 1Hp single phase 1425rpm. Modern lathes must require similar start up torque, especially when running at high speeds with heavy items in the chuck. I'm also interested if anyone has a suitable motor for sale.
Many thanks in advance,
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