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I believe your lathe is by Real Bull and not Seig.

Later..........John


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G'day all.
I recently told you of my testing of the leadscrew mechincal fuse, it
works!. Yes, I damaged the 80T gear. Thankfully it is not beyond
recovery, so that it is now in the tuit basket.
I had previously purchased a spares kit from LMS and this morning dug
the replacement 80T gwear out of the bag. Surprise! the key way is
3mm wide not 4mm as for my lathe. I know my key is 4mm because a few
weeks ago I dropped my key in the swarf (on the floor I thought) No
amount of grovelling could find it so I grabbed a MS tent peg and
milled a new key; actually I used a file. BTW I found the key hiding
under the control box this morning.
I recently got an idler sleeve and key from LMS only to find tha the
key on that is 3mm as is the replacement LS key I purchased. The 57T
& 65T gears I purchased from LMS also have 3mm keyways whilst the
gears that came with the lathe have 4mm key ways. Thankfully a file
can address most of the problems. I can probably file a T profile key
for the sleeve, 3mm one side and 4mm the other.
The QUESTIONS:-
When and how did the change occur? My lathe has similar features to
the yellow Cummins, eg, square not H shaped saddle, way wipers, ball
oilers, nut on RH end of lead screw, etc. Some much earlier posts
commented that the yellow Cummins lathe was not made by Sieg.

Have others with yellow Cummins or Chestern Conquest lathes had the
same experience? The present Cummins lathe is blue and the pictures
don't show the features I refer to.

Have you found other dissimilarities?

Maybe Chris of LMS is lurking so he could comment?

Finally, why are Tuit baskets square??

One good turn deserves another.
Regards.
Ian

Older Homier and Cummins used 4 mm keyways.

Rabid
Uncle Rabid ( )
We Repair Electronic Speed Controllers
For Asian Mini Lathes and Mini Mills
"Just Crazy Enough To Get the Job Done"

G'day John.
I believe you may be right.
Thank you for your prompt response. Real Bull Machinery have a
functioning web site. They have variations on the 7x12 including a CNC
version.
They also have two small mills on offer place a range of accesssories.

HOW many clones are out there?

One good turn deserves another,
Regards,
Ian

G'day all.

My machine may be a Real Bull, which may explain many of my posts!

More variations. The RBM machine (probably mine) has two lock nuts on
the compound feed screw to provide adjustment of the bearing
backlash??? They bear on the dial and so effect that as well.
This also may explain why the 50 division dials I bought from LMS
don't fit. The internal diameter is 12mm whilst my feedscrew shafts
are 10mm diameter.
The fix will not be difficult. For the cross slide I intend to turn
up a bush, 10mm internal and 12mm external make a saw cut along the
bush. I can cross drill and tap the dial 6mm (as per my existing
dial) and use a set screw to adjust the friction with the shaft. For
the componud I can make a similar bush but with a collar at the
inboard end. The dial can also be cross drilled and also have a
recess for the collar of the bush bored out, the existing lock nut
can press against the outboard end of the bush.

Why the 50 div dials? because I work in metric and the Thou divisions
are a pain, you have to calculate for evey adjustment.

Please join the game of "spot the difference."

One good turn deserves another.
Regards,
Ian

Hi Ian,

You referenced the 2 locknuts on the compound feed when you were
talking about the locking grub screw in the end of your leed screw
last week. I was mystified but figured I understood the leedscrew
bit so let the compound reference go through to the keeper. Now I
understand!

John



--- In 7x12minilathe@..., "steam4ian" <fosterscons@...>
wrote:

G'day all.

My machine may be a Real Bull, which may explain many of my posts!

More variations. The RBM machine (probably mine) has two lock nuts

on

the compound feed screw to provide adjustment of the bearing
backlash??? They bear on the dial and so effect that as well.
This also may explain why the 50 division dials I bought from LMS
don't fit. The internal diameter is 12mm whilst my feedscrew

shafts

are 10mm diameter.
The fix will not be difficult. For the cross slide I intend to

turn

up a bush, 10mm internal and 12mm external make a saw cut along

the

bush. I can cross drill and tap the dial 6mm (as per my existing
dial) and use a set screw to adjust the friction with the shaft.

For

the componud I can make a similar bush but with a collar at the
inboard end. The dial can also be cross drilled and also have a
recess for the collar of the bush bored out, the existing lock nut
can press against the outboard end of the bush.

Why the 50 div dials? because I work in metric and the Thou

divisions

are a pain, you have to calculate for evey adjustment.

Please join the game of "spot the difference."

One good turn deserves another.
Regards,
Ian

Hi Ian

I too have a Real Bull Machine marketed and sold here in the Uk by Warco as their "Mini-lathe"

I have had it for three years and it has proven to be very reliable. One other difference from the Seig mini is that the dial locks are by small allen screw which are tightened onto the shaft and these are not as convenient as the spring clip on the Seig. the first thing I used the machine for was to make some small 5mm knurled aluminium screws for the dial adjustment and this has worked fine since.

Another was to get rid of the two adjusting screws and to replace with a single "Nyloc" nut which makes backlash adjustment much simpler.

Gerry
Leeds UK

From: "steam4ian" <fosterscons@...>
Reply-To: 7x12minilathe@...
To: 7x12minilathe@...
Subject: [7x12minilathe] Re: When is a Sieg not a Sieg?
Date: Sat, 31 Mar 2007 08:04:11 -0000

G'day all.

My machine may be a Real Bull, which may explain many of my posts!

More variations. The RBM machine (probably mine) has two lock nuts on
the compound feed screw to provide adjustment of the bearing
backlash??? They bear on the dial and so effect that as well.
This also may explain why the 50 division dials I bought from LMS
don't fit. The internal diameter is 12mm whilst my feedscrew shafts
are 10mm diameter.
The fix will not be difficult. For the cross slide I intend to turn
up a bush, 10mm internal and 12mm external make a saw cut along the
bush. I can cross drill and tap the dial 6mm (as per my existing
dial) and use a set screw to adjust the friction with the shaft. For
the componud I can make a similar bush but with a collar at the
inboard end. The dial can also be cross drilled and also have a
recess for the collar of the bush bored out, the existing lock nut
can press against the outboard end of the bush.

Why the 50 div dials? because I work in metric and the Thou divisions
are a pain, you have to calculate for evey adjustment.

Please join the game of "spot the difference."

One good turn deserves another.
Regards,
Ian

_________________________________________________________________
Txt a lot? Get Messenger FREE on your mobile.

G'day Gerry.

Thanks for the reply. I like the Nyloc nut idea, I must pick some nuts
up from the auto parts shop. To make the dial locking more flexible I
turned some small aluminium pellets, 5mm dia. by 3 mm long and put one
of these in the bottom of the hole. Now I can have the dials firm but
can turn them without scoring the shaft.

As I wrote I am sick of the inch to metric conversion as from time to
time I get it wrong. Over the next few weeks I'll get around to doing
the dials.

One of these days I'll make something which doesn't actually go on the
lathe!

One good turn deserves another.
Regards,
Ian

Ian:

Mini Lathes with a rectangular carriage (as opposed to an H-shaped
carriage) are not made by SIEG. In most cases they are made by the
Yangzhou Real Bull Machine Tool Co. As you have found, there are
differences.

All the mini lathes sold by major vendors in the US are currently made
by SIEG. The "Real Bull" company seems to have better traction in other
parts of the world.

Regards,
Chris Wood

LittleMachineShop.com <>
The premier source of parts and accessories for mini lathes and mini
mills.
396 W. Washington Blvd. #500, Pasadena, CA 91103
(800)981-9663 * Fax (626)797-7934


________________________________

From: 7x12minilathe@...
[mailto:7x12minilathe@...] On Behalf Of steam4ian
Sent: Friday, March 30, 2007 9:23 PM
To: 7x12minilathe@...
Subject: [7x12minilathe] When is a Sieg not a Sieg?



G'day all.
I recently told you of my testing of the leadscrew mechincal fuse, it
works!. Yes, I damaged the 80T gear. Thankfully it is not beyond
recovery, so that it is now in the tuit basket.
I had previously purchased a spares kit from LMS and this morning dug
the replacement 80T gwear out of the bag. Surprise! the key way is
3mm wide not 4mm as for my lathe. I know my key is 4mm because a few
weeks ago I dropped my key in the swarf (on the floor I thought) No
amount of grovelling could find it so I grabbed a MS tent peg and
milled a new key; actually I used a file. BTW I found the key hiding
under the control box this morning.
I recently got an idler sleeve and key from LMS only to find tha the
key on that is 3mm as is the replacement LS key I purchased. The 57T
& 65T gears I purchased from LMS also have 3mm keyways whilst the
gears that came with the lathe have 4mm key ways. Thankfully a file
can address most of the problems. I can probably file a T profile key
for the sleeve, 3mm one side and 4mm the other.
The QUESTIONS:-
When and how did the change occur? My lathe has similar features to
the yellow Cummins, eg, square not H shaped saddle, way wipers, ball
oilers, nut on RH end of lead screw, etc. Some much earlier posts
commented that the yellow Cummins lathe was not made by Sieg.

Have others with yellow Cummins or Chestern Conquest lathes had the
same experience? The present Cummins lathe is blue and the pictures
don't show the features I refer to.

Have you found other dissimilarities?

Maybe Chris of LMS is lurking so he could comment?

Finally, why are Tuit baskets square??

One good turn deserves another.
Regards.
Ian

. Over the next few weeks I'll get around to doing the dials.

One of these days I'll make something which doesn't actually go on the lathe!

One good turn deserves another.
Regards,
Ian


Good luck with that :) Tell me how that work out for you!

(smile)
Marty