Thanks for posting the size of the #1 pulley for the Dumore 44-011 toolpost
grinder, DoN.

It's not too surprising to me that the new replacement part is also a
crowned steel pulley.

It's good that you caught the plain washer against the grinding wheel before
using the grinder.

FWIW, I normally always disassemble everything that's used or of
questionable quality (China) before using them, particularly electrical
items/tools. Ya never know what might've been done that was good enough for
a previous user/owner.

I don't suppose that the #1 pulley had any divots drilled into it for
balancing.

It looks a bit weird to see 2 spots on the #2 pulley drilled, as small as it
is.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


Copied from Goog RCM archives:

IIRC, Wild Bill asked what the pulley was like which I ordered from
DuMore. It is the standard crowned steel one, not the flanged aluminum
ones. I suspect that the aluminum ones were made by someone who got a
grinder without *any* pulleys, and did not know about the self-centering
features of a crowned pulley with a flat belt.

The nominal size was suppose to be 7/8" (0.875"), and the one
which I received measured 0.863" so all the accuracy which I was
maintaining was not needed. :-)


In checking other things out, I discovered that only one side of
the wheel had the proper relieved flange. The other was a flat washer,
and smaller than the pressure diameter of the one which was fitted, thus
it was a time bomb waiting to go off. I've got measurements, and will
be machining up a second one soon. Tonight I made the ring to slide
around the post to set the grinder's shank centerline on the centerline
of the lathe headstock and tailstock, to save fiddling every time I
mount it. (I made one for the smaller Series 11 as well.)


Thanks to all for all the information and help.


Enjoy,
DoN.

On 2009-02-17, Wild_Bill wrote:
Thanks for posting the size of the #1 pulley for the Dumore 44-011 toolpost
grinder, DoN.

It's not too surprising to me that the new replacement part is also a
crowned steel pulley.

I agree -- but the flanged aluminum pulleys came from
*somewhere*. :-)

It's good that you caught the plain washer against the grinding wheel before
using the grinder.

FWIW, I normally always disassemble everything that's used or of
questionable quality (China) before using them, particularly electrical
items/tools. Ya never know what might've been done that was good enough for
a previous user/owner.

It came pre assembled with the No. 2 on the motor and the No. 4
on the spindle (slowest speed for largest wheel), and the stone (about a
2-1/2") on the other end. The standard flange was on the outside side,
and the inside was mostly hidden by the wheel guard, so I couldn't see
it, and I assumed that it had been run that way before, so I did one
test spin-up to check the motor after checking the bearings with no belt
first. At least the wheel did not explode that time, and now I have to
make the duplicate flange. A bit of confusion has kept me from that for
a while:

1) Nasty two-day intestinal bug.

2) Our younger cat has vanished, and we can't seem to find her.
One possibility was that she was in the shop since the door to
the shop from the foyer blew open during some really strong wind
gusts (it does from time to time) so there was a chance that she
had gone in there. (Also a chance she got onto the deck, or to
some hinding place elsewhere in the house. I'm making a TV
camera on a pole for checking some of the harder to access
places.

3) Eye exam shows advanced cataracts in both eyes. Surgery
scheduled.

I don't suppose that the #1 pulley had any divots drilled into it for
balancing.

Nope. Not a sign. At least right now I can check it without
needing glasses -- the cataracts seem to shift the focus from distance
to close-up. I used to be good at infinity, even after I lost focus
accomodation. Now, I'm sharp at about 10". That should jump back out
to a more reasonable distance after the surgery.

It looks a bit weird to see 2 spots on the #2 pulley drilled, as small as it
is.

Right. I was surprised too -- two very small diameter holes,
deeper than I would have expected. I guess that was to keep them out of
the nut contact area. I haven't yet checked the drill size, but I would
not be surprised to find them at #60 or so.

Enjoy,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

I wish you the best DoN, for excellent results and a fast recovery from the
eye surgery.

--
WB
..........
metalworking projects
www.kwagmire.com/metal_proj.html


"DoN. Nichols" wrote in message
...
On 2009-02-17, Wild_Bill wrote:
Thanks for posting the size of the #1 pulley for the Dumore 44-011
toolpost
grinder, DoN.

It's not too surprising to me that the new replacement part is also a
crowned steel pulley.

I agree -- but the flanged aluminum pulleys came from
*somewhere*. :-)

It's good that you caught the plain washer against the grinding wheel
before
using the grinder.

FWIW, I normally always disassemble everything that's used or of
questionable quality (China) before using them, particularly electrical
items/tools. Ya never know what might've been done that was good enough
for
a previous user/owner.

It came pre assembled with the No. 2 on the motor and the No. 4
on the spindle (slowest speed for largest wheel), and the stone (about a
2-1/2") on the other end. The standard flange was on the outside side,
and the inside was mostly hidden by the wheel guard, so I couldn't see
it, and I assumed that it had been run that way before, so I did one
test spin-up to check the motor after checking the bearings with no belt
first. At least the wheel did not explode that time, and now I have to
make the duplicate flange. A bit of confusion has kept me from that for
a while:

1) Nasty two-day intestinal bug.

2) Our younger cat has vanished, and we can't seem to find her.
One possibility was that she was in the shop since the door to
the shop from the foyer blew open during some really strong wind
gusts (it does from time to time) so there was a chance that she
had gone in there. (Also a chance she got onto the deck, or to
some hinding place elsewhere in the house. I'm making a TV
camera on a pole for checking some of the harder to access
places.

3) Eye exam shows advanced cataracts in both eyes. Surgery
scheduled.

I don't suppose that the #1 pulley had any divots drilled into it for
balancing.

Nope. Not a sign. At least right now I can check it without
needing glasses -- the cataracts seem to shift the focus from distance
to close-up. I used to be good at infinity, even after I lost focus
accomodation. Now, I'm sharp at about 10". That should jump back out
to a more reasonable distance after the surgery.

It looks a bit weird to see 2 spots on the #2 pulley drilled, as small as
it
is.

Right. I was surprised too -- two very small diameter holes,
deeper than I would have expected. I guess that was to keep them out of
the nut contact area. I haven't yet checked the drill size, but I would
not be surprised to find them at #60 or so.

Enjoy,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

On 2009-02-19, Wild_Bill wrote:
I wish you the best DoN, for excellent results and a fast recovery from the
eye surgery.

Thanks! I'm looking forward to the improvement. When sharp
vision moves down to 10", that is just a bit too close for the computer
screen to be comfortable. I'm currently using my wife's driving glasses
as I type.

Thanks again,
DoN.

--
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---