Ha It gets better, in the Hare & Forbes brochure it says theat the leadscrew
is metric, but another source of information for the same lathe says that it
is an imperial leadscrew.

Have discovered that its pitch is 3mm and it has 8tpi (butress thread)

I'll just keep digging.



"DazFNQ" wrote in message
u...
Hi All

Can anyone help shed some light on this problem?


Aussie link http://www.machineryhouse.com.au/Pro...tockCode=L183#
Hare & Forbes Lathe code=L183

China link
http://cnchinadragon.manufacturer.gl...he-Machine.htm
Shenzen CQ6230B

http://www.metalworking.com/dropbox/...230B_Lathe.JPG
dropbox link

Background Info
---------------------

Leadscrew = metric 3mm pitch

Change gears 1 Set: M=1.25 (pitch) Z=22T, 44T, 26T, 52T, 38T

Lathe: Shenzhen CQ6230B

FWIW the chinese manual that comes with the lathe is poor reading, sure
that are not designed to teach but they must convey a clear
message/instuction when referencing any information therein.


Down the left side of the lathe (headstock gearchange cover) there are 5
tables of information.

1. REVS/MM
2. REVS/INCH
3. THREADS METRIC PITCHES MM
4. THREADS IMPERIAL PITCHES 1/INCH
5. INDICATOR TABLE


Q1. In the top most table (revs/mm)
Under the column titled "position"
Third column from the left, there are two symbols (one demonstrating
horizontal, one demonstrating vertical)

horizontal ----^VW^---
vertical
|


|

What is their meaning (are they important, or can they be ignored)?


Q2. In the third table (THREADS IMPERIAL PITCHES 1/inch)
Under the column titled "position"
Second column from the left, there is the letter Z (directly underneath
are MII and MI)
Any clue as to what the letter Z means?
(I did find in the chinese manual that one of the change gears was
referred to as "Z=22T" as in a 22 teeth gear)

Are they trying to tell me that the 22 teeth gear is also known as the Z
gear?



Q3. In the third table (THREADS IMPERIAL PITCHES 1/inch)
Under the column titled "position"
First column from the left, (you may need to zoom in)

There is a small image on the table face where the image shows in part

48T (being on top)

(no in between gears)

Z ( being below it, is this referring to the Z gear ie: 22Teeth?)


Q4. In the third table (THREADS IMPERIAL PITCHES 1/inch)
Under the column titled "position"
Second column from the left,

If I wanted to produce a 24tpi thread, should I be selecting the levers A
and 3 with 48T on the top change gear and 22T gear on the bottom?

Thanks DazFNQ