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Hi,

One alternative is to avoid the problem by using something like nutlink belting which can be cut to length and joined without removing the spindle. I believe that this has been satisfactory...

Hi,

I would suggest to retain your sanity that you treat these two gears as special and always keep them on the lathe.

Don't replace them with a random gear.

When you wish to change ranges...

Hi,

Before you look further is there an unused 20 tooth gear on the leadscrew shaft ?

The leadscrew gear should be something like 80 teeth and the smaller gear packs out the thread on the...

Hi,

The first tool (SCLCR1212H06) is part of a set of tools,

SCACR or SCACL - turn to a shoulder left or right hand
SCLCR or SCLCL - turning/ Facing left or right hand
SCMCN - plain turning....

Hi Mal,

I have one that I bought from one of the Durdens a while ago (2010) fw444400 on eBay, currently not active.

There has been a bit of Hercus stuff dumped on eBay recently by jr444400 -...

Hi all,

I was going through some material I had copied onto my computer and I would like to bring attention an older thread on this forum
...

Hi,

Sorry I haven't replied before now. I have done some searching myself but haven't found any better information than I have posted before.

The advantage of the 127 tooth gear is that it is...

Hi,

I may have an alternative source of the plate, I may look tomorrow. (9 Inch spares book/ early text turning?)

The 9" plate previously attached was copied from eBay (fw444400/ jr444400) in...

Hi,

The gear required (from what I can read from a label for a 9 Inch lathe) is 127/ 120 which gives you 8 TPI from a 3mm leadscrew.

To cut a range of gears you will need one off each 33, 36,...

Hi,

The first few pictures appear to be a quick retracting toolpost for thread cutting.

(I assume that the rotary handle retracts the toolholder )

This is particularly applicable to cutting...

Hi,

For future reference there are several specialised tools to remove and replace the spindle and bearings on the 260 lathe in the service manual and shown in operation with the Hercus...

Hi,

The difference arises from the difference in leadscrew pitch between the Imperial and Metric lathes.

An imperial lathe has an 8 tpi leadscrew (3.175mm pitch) and a metric lathe has a 3mm...

What's the justification for this? Anti-wear or a safeguard against shearing the threads due to excessive clamping forces? Are you referring to the nut threads or the chuck threads?

Please give...

Also as one site on making one of these adaptors commented, cutting the fine thread for the collet closer nut is all but impossible in cast iron.

The collet closer nut requires the thread to be in...

Hi,

In supporting your statements and amplifying some points,

I started doing a course at a TAFE and one exercise in turning to diameter and length seemed to be interesting when the completed...

To which can be added Building an ER collet chuck from scratch for a Myford ML7

The original ER collet adaptor was featured in the English Model Engineer's Workshop magazine some time ago and in...

Hi Peter,

I would also be interested in a five inch backplate for a 260.

The 1 1/2 Inch, 8TPI backplate for the 9 Inch is a regular Southbend item available from multiple sources. (eg...

Hi,

Attached are copies of the 63/64 and the 120/127 transposing gear charts as supplied for the Hercus 260 and 9 Inch lathe. Rather rough but should be readable.

They are also shown in the...