Member postings for not done it yet

Examining the chuck it will just come straight off in reverse as there doesn't seem a way to lock it on. Don't fancy having it come off and causing some damage.

Metric threading on an imperial lathe requires the lathe to be driven backwards between cuts You should never operate in such a way that the chuck could unwind. This includes braking the motor, which is an option with a VFD.

for what machine do you need a motor?

At a guess, it would be a myford s7 motor?

A good article on a real life fix (several times over). Off topic really, but my immediate thought was why he made a new counter shaft - I would have used the dead motor and added a pulley somehow.

I have one option for CT. I asked and was told it was a bearing prefix for a supplier that went ouf of business about 10 years ago. (From Peter at Bearing boys).

Local Model Engineering Society?

Granville for one.

Some HSS for the tangential toolholder?

this wore oversize the only option was a new head or internal knurling

I was Ford over BMC, too. Guides were of no particular problem as they could be reamed oversize to take oversize valves. I only ever fitted one size up, so not sure how many larger stem sizes were available. Never seemed a particularly good or bad engineering practice at the time - engines were often scrap long before the bodywork disintegrated (not like vauxhalls!) and replacement engines were cheap and easy to swap out.

Apart from needing 40mm square bar, I agree with JB, assuming units shown are in centimetres.

As I see it, the run out was not checked on the workpiece.

"I checked the run out on the table with an 8 mm test bar (taken from a scanner in an MT2 collect. I got around .14 run out over 50mm. The actual milling was done nearer 100mm which would put it between .25 and .3 out."

Run out would have been better checked as the rotary table was adjusted throughout a complete turn, shirley, not just along the bar at one point, as the above suggests. Until that is determined there is only guessing as to how any discrepancy between target and actual measurements may have arisen. Or have I missed something?

Apart from the running current, it would have to be a very soft start. Motor current in-rush, at start up, can be several multiples of full load current. Not a chance on a normal domestic supply.

How many motors of over 3 HP do you see running on domestic single phase? Not many.

Not an SR71, then?

Initialy, I thought perhaps I could fit a clutch from a small car (with a lightened flywheel)

There are other alternatives to car parts. Ride on mowers, motorbikes as a couple of examples.

Who exactly is going to take a thousand quids worth of counterfeit coins into a bank for exchange for good money?

Surely the losers will only be those that take their earnings or savings to the bank? So it won't stop them going into circulation, but might make it easier to trace the counterfeiters, I suppose.... until they get more resourceful....

It is more usually a valve problem, than rings, where compressors are concerned, I think.

Any (and every) electric motor can be reversed. Some are easier than others. The typical induction motor, used In many applications, is reversible. It just requires the correct mains connections for the rotation desired. Reversing switches provide this re-organisation of polarity for clockwise or anti clockwise rotation. "T" terminals are, I would suggest, simply a manufacturer or user description. You need to use the basic connections for your motor, not specific instructions for the connections for the factory installed motor.

Sorry, but I see it as a real shortcoming of the methodology. Rigidity is not considered. Blame is on the rotary table but no consideration of the possibility this run out is due to MT, the extension to a 4 jawa self centering chuck (with its own run out) and an unsupported bar being milled at a further extension from the rotary table, and no consideration as to the concentricity of the workpiece.

Try again, is my advice, but do find where the imprecision occurs - before blaming the rotary table!

If it is a two stage pump, it seems that the second stage may be your problem. Water in the receiver will only reduce the storage capacity and not give the symptom you describe.

I would think that available working height is a prime consideration before deciding on any particular make/model.

Apart from the Centec, I quite like the Raglan mill, but it is a little constrained in working height available.

Clearly, with lathes that have a separate threading and power feed arrangement (ie. a separate power feed shaft) there is no need to disengage the dial indicator, ever.

The situation with cheaper type lathes (like myfords), where the lead screw also drives the power feed, may be different. Simply put: if it ain't in contact, or turning, there will be no wear issue.

One reason why myford closed down Raglan, after purchase - myford only made and sold cheaper lathes and were not interested in making any investment in the higher quality (and therefore more expensive) hobby lathe sector, into which Raglan were clearly entrenched.