Wednesday, 18 January 2012

[7x10minilathe] Re: Dial Indicater/Dial Test Indicator set & Laser tachometer

 

The easiest way to do that is to replace the motor pulley with a smaller one. IIRC, there was some recent discussion, complete with SDP part numbers on the 7x12 group.

http://www.sdp-si.com/

Roy

--- In 7x10minilathe@yahoogroups.com, "tom_rittenhouse" <tom@...> wrote:
>
> Thanks, that is an idea I will look into. I am also thinking about adding reduction to the drive.
>
>
> --- In 7x10minilathe@yahoogroups.com, "Roy" <roylowenthal@> wrote:
> >
> > You may be able to adjust the pots on the speed control board to improve low end torque. There's a generic procedure here:
>
> > Still, for really controllable high torque low speed work, a hand crank can't be beat!
> >
> > Roy
>

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[7x10minilathe] Re: Dial Indicater/Dial Test Indicator set & Laser tachometer

 

Tom;
Which Tach did you buy ,and do you like it ?
I have an old Stewart Warner analog tach ,and the needle is off one way now over 200 rpm ,and was thinking about replacing it.
Ya think something ought to last longer ,I bought it in 67

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Tuesday, 17 January 2012

[7x10minilathe] Re: Dial Indicater/Dial Test Indicator set & Laser tachometer

 

Thanks, that is an idea I will look into. I am also thinking about adding reduction to the drive.

--- In 7x10minilathe@yahoogroups.com, "Roy" <roylowenthal@...> wrote:
>
> You may be able to adjust the pots on the speed control board to improve low end torque. There's a generic procedure here:

> Still, for really controllable high torque low speed work, a hand crank can't be beat!
>
> Roy

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[7x10minilathe] Re: Dial Indicater/Dial Test Indicator set & Laser tachometer

 

You may be able to adjust the pots on the speed control board to improve low end torque. There's a generic procedure here:

http://www.mini-lathe.com/Mini_lathe/Modifications/modifications.htm#slow_speed

You should be able to find a data sheet for the board that's in your machine once you open it up & can see the manufacturer's name & model number on the board.

Still, for really controllable high torque low speed work, a hand crank can't be beat!

Roy

--- In 7x10minilathe@yahoogroups.com, "tom_rittenhouse" <tom@...> wrote:
>
> I just got one of these (http://www.amazon.com/gp/product/B002YPDQHI/ref=oh_o00_s00_i01_details)dial indicator sets and a laser tach in the mail.
>
> The tach seems to work OK. Although it shows that the lathe does not change speed much at the beginning and end of the the dial travel. Also, while I can slow the lathe down below about 70rpm it pretty much stalls at those speeds. So much for the specs. At first I thought I was going to have to put some black tape around the chuck, but the reflective tape seems to work OK without doing that. Not a bad deal for $17. Of course, I will soon have an idea of how fast the lathe is turning at what dial settings without the tach, and it will become another piece of junk in the drawer; which is why I did not want to spend much on it.
>
> The DI/DTI set came with the parts all bouncing around loose in the case, and no instructions. While I have has DI's before this is the first time I have had a DTI. The smaller mount for the DTI took a bit of figuring, until I realized I needed to use a piece from the the bigger mount with it.
>
> My next decision will have to be whether I want a digital protractor or a 4 piece combination square. I have about 4 squares laying about, but do not have a decent protractor. &, nope, I can not afford a Starrett.
>

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[7x10minilathe] Dial Indicater/Dial Test Indicator set & Laser tachometer

 

I just got one of these (http://www.amazon.com/gp/product/B002YPDQHI/ref=oh_o00_s00_i01_details)dial indicator sets and a laser tach in the mail.

The tach seems to work OK. Although it shows that the lathe does not change speed much at the beginning and end of the the dial travel. Also, while I can slow the lathe down below about 70rpm it pretty much stalls at those speeds. So much for the specs. At first I thought I was going to have to put some black tape around the chuck, but the reflective tape seems to work OK without doing that. Not a bad deal for $17. Of course, I will soon have an idea of how fast the lathe is turning at what dial settings without the tach, and it will become another piece of junk in the drawer; which is why I did not want to spend much on it.

The DI/DTI set came with the parts all bouncing around loose in the case, and no instructions. While I have has DI's before this is the first time I have had a DTI. The smaller mount for the DTI took a bit of figuring, until I realized I needed to use a piece from the the bigger mount with it.

My next decision will have to be whether I want a digital protractor or a 4 piece combination square. I have about 4 squares laying about, but do not have a decent protractor. &, nope, I can not afford a Starrett.

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Monday, 9 January 2012

[sherline] Re: Test

 



Thanks, Thayer,
Regards,
Jerry G (Glickstein)

--- In sherline@yahoogroups.com, Thayer Syme <thayer@...> wrote:
>
> 2-4-6?
>
> >1-2-3-
> >
> >
> >
> >------------------------------------
> >
> >Yahoo! Groups Links
> >
> >
> >
>

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Re: [sherline] Test

Or that . . .

On Jan 9, 2012, at 7:57 PM, Thayer Syme wrote:

> 2-4-6?
>
> >1-2-3-
> >
> >
> >
> >------------------------------------
> >
> >Yahoo! Groups Links
> >
> >
> >
>

Charles Fox
cafox513@gte.net

[Non-text portions of this message have been removed]

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Re: [sherline] Test

 

2-4-6?

>1-2-3-
>
>
>
>------------------------------------
>
>Yahoo! Groups Links
>
>
>

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Re: [sherline] Test

4-5-6

On Jan 9, 2012, at 7:10 PM, shipmodelmaker1931 wrote:

>
> 1-2-3-
>
>

Charles Fox
cafox513@gte.net

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[sherline] Test

 


1-2-3-

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Sunday, 8 January 2012

Re: [Simply Computers] Test - Sorry for the Inconvenience

I'm sorry to hear you say that. Your account has been put on permanent
moderation. Additional attempts to send test messages to the group will be
rejected. If you would like to test your SMTP server, feel free to write
me directly instead of all 16,000+ members of this group.

--David

On Sun, Jan 8, 2012 at 3:13 PM, Johneclinard <johneclinard@aol.com> wrote:

> **
>
>
>
> This was not SPAM!!!! It was a necessary test to figure out why my Gmail
> SMTP was not working. Thanks you for your understanding.
>
> John
> .
>
> -----Original Message-----
> From: David Ron <david.m.ron@gmail.com>
> To: simplycomputers2 <simplycomputers2@yahoogroups.com>
> Sent: Sun, Jan 8, 2012 12:48 am
> Subject: Re: [Simply Computers] Test - Sorry for the Inconvenience
>
> Please do not send test messages to our message board. We have thousands of
> sers who are forced to deal with this spam. Do it again and you will need
> emoved from the group.
> --David
> lease pardon my terseness; sent from my phone.
> n Jan 5, 2012 9:23 PM, "John E Clinard" <johneclinard@aol.com> wrote:
> > **
>
> dafgahdsgjfuhkl
>
> Non-text portions of this message have been removed]
>
> ------------------------------------
> Visit Simply Computers Tech Support Group and Helpdesk (24x7). Providing
> 100%
> ree Computer Tech Support since 1999. With over 12,000 members Simply
> Computers
> s one of the largest and most active Tech Support Forums on the Internet.
> ttp://tech.groups.yahoo.com/group/simplycomputers2
> Yahoo! Groups Links
> Individual Email | Traditional
> http://docs.yahoo.com/info/terms/
>
> [Non-text portions of this message have been removed]
>
>
>


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Re: [Simply Computers] Test - Sorry for the Inconvenience

 


This was not SPAM!!!! It was a necessary test to figure out why my Gmail SMTP was not working. Thanks you for your understanding.

John
.

-----Original Message-----
From: David Ron <david.m.ron@gmail.com>
To: simplycomputers2 <simplycomputers2@yahoogroups.com>
Sent: Sun, Jan 8, 2012 12:48 am
Subject: Re: [Simply Computers] Test - Sorry for the Inconvenience

Please do not send test messages to our message board. We have thousands of
sers who are forced to deal with this spam. Do it again and you will need
emoved from the group.
--David
lease pardon my terseness; sent from my phone.
n Jan 5, 2012 9:23 PM, "John E Clinard" <johneclinard@aol.com> wrote:
> **

dafgahdsgjfuhkl

Non-text portions of this message have been removed]

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ree Computer Tech Support since 1999. With over 12,000 members Simply Computers
s one of the largest and most active Tech Support Forums on the Internet.
ttp://tech.groups.yahoo.com/group/simplycomputers2
Yahoo! Groups Links
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Saturday, 7 January 2012

Re: [Simply Computers] Test - Sorry for the Inconvenience

Please do not send test messages to our message board. We have thousands of
users who are forced to deal with this spam. Do it again and you will need
removed from the group.

--David
Please pardon my terseness; sent from my phone.
On Jan 5, 2012 9:23 PM, "John E Clinard" <johneclinard@aol.com> wrote:

> **
>
>
> dafgahdsgjfuhkl
>
>
>


[Non-text portions of this message have been removed]

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RE: [Electronics_101] How do I test a stepper motor

 

Hey Terramir,

Chances are that you will find the driver right on the printer board. IC
L293D is an H Bridge that you could by:
http://www.datasheetcatalog.org/datasheet/texasinstruments/l293d.pdf.

Good luck

:-) :-)

_____

From: Electronics_101@yahoogroups.com
[mailto:Electronics_101@yahoogroups.com] On Behalf Of terramir
Sent: Saturday, January 07, 2012 3:03 PM
To: Electronics_101@yahoogroups.com
Subject: RE: [Electronics_101] How do I test a stepper motor

well on a first note I watch the video and it helped I could verify that
there were to continuous coils 6 to 9 ohms depending on the stepper motor.
As for the H bridges I didn't quite know what to make of that but all three
stepper motors had a coil between 1 and 3 and 2 and 4 and if I applied power
between 1 and 3 it snapped to the next step also the same with two and four
it then locks in that position.so would you guys say they all work?terramir

--- On Sat, 1/7/12, Paul Galarneau <pgsoft51@yahoo.ca
<mailto:pgsoft51%40yahoo.ca> > wrote:

From: Paul Galarneau <pgsoft51@yahoo.ca <mailto:pgsoft51%40yahoo.ca> >
Subject: RE: [Electronics_101] How do I test a stepper motor
To: Electronics_101@yahoogroups.com
<mailto:Electronics_101%40yahoogroups.com>
Date: Saturday, January 7, 2012, 6:01 AM

Hi Terramir,

Normally, 4 wires stepper are bipolar motors. If so, you will need H Bridge

Stepper Driver. Just Google it. He is a good page on the difference.

http://en.wikipedia.org/wiki/Stepper_motor

Paul :-) :-)

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RE: [Electronics_101] How do I test a stepper motor

 

well on a first note I watch the video and it helped I could verify that there were to continuous coils 6 to 9 ohms depending on the stepper motor. As for the H bridges I didn't quite know what to make of that but all three stepper motors had a coil between 1 and 3 and 2 and 4 and if I applied power between 1 and 3 it snapped to the next step also the same with two and four it then locks in that position.so would you guys say they all work?terramir

--- On Sat, 1/7/12, Paul Galarneau <pgsoft51@yahoo.ca> wrote:

From: Paul Galarneau <pgsoft51@yahoo.ca>
Subject: RE: [Electronics_101] How do I test a stepper motor
To: Electronics_101@yahoogroups.com
Date: Saturday, January 7, 2012, 6:01 AM

 

Hi Terramir,

Normally, 4 wires stepper are bipolar motors. If so, you will need H Bridge

Stepper Driver. Just Google it. He is a good page on the difference.

http://en.wikipedia.org/wiki/Stepper_motor

Paul :-) :-)

_____

From: Electronics_101@yahoogroups.com

[mailto:Electronics_101@yahoogroups.com] On Behalf Of terramir

Sent: Saturday, January 07, 2012 3:34 AM

To: Electronics_101@yahoogroups.com

Subject: [Electronics_101] How do I test a stepper motor

Well I am collecting stepper motors from printers and such and I know to

make real use of them I need a stepper controller IC and some kind of

processor program etc. That's ok got the scematic parts are coming and well

gonna slap that together etc to finish 14th of febuary if everything goes

right. but what I need to know if how I can check out stepper motors very

simply to verify functionality . there are 4 wire hybrid stepper motors 17pm

type with 4 contacts. just want to run checks on them before I get going too

far to see if I'll have to buy other ones.

Let me know

yea been busy haven't posted in ages

terramir

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Checked by AVG - www.avg.com

Version: 2012.0.1901 / Virus Database: 2109/4726 - Release Date: 01/06/12

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