Calling all electrical engineers - Page 2

footfootfoot · 10-21-2012, 01:16 PM

Can you direct us to a photo of one? It sounds really simple to build.

eta: Is it this?

footfootfoot · 10-21-2012, 01:28 PM

you could pick up an inexpensive electric drill, mount it to a wooden base, and chuck a bolt into it that would hold the disk. Most VS drills have a trigger lock. You could also plug the drill into a dimmer and use that to adjust your speed.

Depending on how tight you bolted the disk, that connection could act as a sort of clutch.

Any small, variable speed motor would do. I'm sure you cold pick up a turntable at goodwill and use that. Belt drive would allow for the disk to slip and would allow you to gear down or up.

Clodfobble · 10-21-2012, 04:04 PM

Quote:

Originally Posted by footfootfoot

eta: Is it this?

Yep, that's the one.

I definitely like the drill idea, since they have rechargeable batteries.

BrianR · 10-22-2012, 09:12 AM

My inner asshole came out and said to use a Dremel. 35,000 RPM!!

Look here for slower models to work her up to the big boy.

glatt · 10-22-2012, 09:43 AM

This motor looks promising.
http://www.amazon.com/Wondermotor-Va...lectric+Motors

It comes with the speed controller knob attached to a foot long wire, and it's reversible depending on how you wire it. But you could add a switch to make it reversible at the flip of a switch.

At a max speed of 50 RPM it seems perfect. You wouldn't be able to follow a spinning disk with your eye any faster than that. If you have an old turntable, you should follow that with your eye to see what 45RPM looks like.

It's a little expensive, so if you got it and the variable speed wasn't as smooth as you wanted, you would be out $90. But it has some kind of mounting holes, which is nice, and it's fairly powerful, so you wouldn't be taxing it too much. They suggest a $17 power supply that goes with it. With that power supply, you would plug it into the wall.

I don't know enough about electronics to know what that controller is like. I don't know what pulse width modulation means. But I'm guessing you turn the knob to turn it on and then turn it more to make it go faster, up to 50 RPM. It's got a 10 MM drive shaft (1 cm) which is nice and big to work with. Many small motors have these little drive shafts, and how are you going to mount a big disk to those?

Spexxvet · 10-22-2012, 09:51 AM

Clodfobble · 10-23-2012, 10:27 PM

That looks perfect glatt, thanks!

Perry Winkle · 10-24-2012, 10:46 AM

http://www.nielsendesigndiscgrinder....c_Grinder.html

Instead of attaching abrasives you could attach just about anything else (like a small child, given a big enough motor).

Clodfobble · 10-24-2012, 10:27 PM

I think 1800 rpm is a bit much for the eye to follow...

BigV · 11-21-2012, 11:22 PM

Clodfobble

you're a big cooker person. do you own a kitchenaid stand mixer?

Clodfobble · 11-22-2012, 08:00 AM

I do, but I don't exactly want to dismantle it...

BigV · 11-22-2012, 11:03 AM

!!!
well I don't but twil does. I was monkeying around with hers while she was mixing the pumpkin pie fillling and I discovered the little chrome cover that hides the front PTO. that's the power take off for accessories that don't use the bowl. I noticed that it has what looks like a half inch square drive. and I noticed that the whole drive/head tilts upward. and I noticed that the speed control is adjustable and looks like it starts pretty slow.

could this be the drive unit for your Clod-traption?

Clodfobble · 11-22-2012, 05:53 PM

I'll have to check when I get home (at the in-laws' for Thanksgiving right now,) but I think the head doesn't tilt all the way back, just 45 degrees or so. I could maybe make her stand beneath it and look up, though. To be honest I've lost most of my steam for the project though, they've already moved on to more advanced exercises in therapy. They did a reevaluation with the doctor last week to see how she's doing, and everything was greatly improved. It's cool to watch her picking out 3D stereogram pictures that she simply could not see 10 weeks ago.

BigV · 11-22-2012, 06:34 PM

"greatly improved"

what a great problem to have!

enjoy your company and your holiday. we'll continue later. happy thanksgiving

10-21-2012, 01:16 PM	#16
footfootfoot To shreds, you say? Join Date: Aug 2004 Location: in the house and on the street-how many, many feet we meet! Posts: 18,449	Can you direct us to a photo of one? It sounds really simple to build. eta: Is it this? Attached Images __________________ The internet is a hateful stew of vomit you can never take completely seriously. - Her Fobs

10-21-2012, 01:28 PM	#17
footfootfoot To shreds, you say? Join Date: Aug 2004 Location: in the house and on the street-how many, many feet we meet! Posts: 18,449	you could pick up an inexpensive electric drill, mount it to a wooden base, and chuck a bolt into it that would hold the disk. Most VS drills have a trigger lock. You could also plug the drill into a dimmer and use that to adjust your speed. Depending on how tight you bolted the disk, that connection could act as a sort of clutch. Any small, variable speed motor would do. I'm sure you cold pick up a turntable at goodwill and use that. Belt drive would allow for the disk to slip and would allow you to gear down or up. __________________ The internet is a hateful stew of vomit you can never take completely seriously. - Her Fobs

10-22-2012, 09:12 AM	#19
BrianR Cleverly disguised as a responsible adult Join Date: Jan 2001 Location: Dallas, TX Posts: 3,338	My inner asshole came out and said to use a Dremel. 35,000 RPM!! Look here for slower models to work her up to the big boy. __________________ Never be afraid to tell the world who you are. -- Anonymous Last edited by BrianR; 10-22-2012 at 09:15 AM. Reason: fixed link

10-22-2012, 09:51 AM	#21
Spexxvet Makes some feel uncomfortable Join Date: Dec 2005 Posts: 10,346	__________________ "I'm certainly free, nay compelled, to spread the gospel of Spex. " - xoxoxoBruce

10-23-2012, 10:27 PM	#22
Clodfobble UNDER CONDITIONAL MITIGATION Join Date: Mar 2004 Location: Austin, TX Posts: 20,012	That looks perfect glatt, thanks! __________________ My book My other book My spirit animal

10-22-2012, 09:43 AM	#20
glatt ™ Join Date: Jul 2003 Location: Arlington, VA Posts: 27,717	This motor looks promising. http://www.amazon.com/Wondermotor-Va...lectric+Motors It comes with the speed controller knob attached to a foot long wire, and it's reversible depending on how you wire it. But you could add a switch to make it reversible at the flip of a switch. At a max speed of 50 RPM it seems perfect. You wouldn't be able to follow a spinning disk with your eye any faster than that. If you have an old turntable, you should follow that with your eye to see what 45RPM looks like. It's a little expensive, so if you got it and the variable speed wasn't as smooth as you wanted, you would be out $90. But it has some kind of mounting holes, which is nice, and it's fairly powerful, so you wouldn't be taxing it too much. They suggest a $17 power supply that goes with it. With that power supply, you would plug it into the wall. I don't know enough about electronics to know what that controller is like. I don't know what pulse width modulation means. But I'm guessing you turn the knob to turn it on and then turn it more to make it go faster, up to 50 RPM. It's got a 10 MM drive shaft (1 cm) which is nice and big to work with. Many small motors have these little drive shafts, and how are you going to mount a big disk to those?

10-24-2012, 10:46 AM	#23
Perry Winkle Esnohplad Semaj Ton Join Date: Feb 2005 Location: A little south of sanity Posts: 2,259	http://www.nielsendesigndiscgrinder....c_Grinder.html Instead of attaching abrasives you could attach just about anything else (like a small child, given a big enough motor).

10-24-2012, 10:27 PM	#24
Clodfobble UNDER CONDITIONAL MITIGATION Join Date: Mar 2004 Location: Austin, TX Posts: 20,012	I think 1800 rpm is a bit much for the eye to follow... __________________ My book My other book My spirit animal

11-21-2012, 11:22 PM	#25
BigV Goon Squad Leader Join Date: Nov 2004 Location: Seattle Posts: 27,063	Clodfobble you're a big cooker person. do you own a kitchenaid stand mixer? __________________ Be Just and Fear Not.

11-22-2012, 08:00 AM	#26
Clodfobble UNDER CONDITIONAL MITIGATION Join Date: Mar 2004 Location: Austin, TX Posts: 20,012	I do, but I don't exactly want to dismantle it... __________________ My book My other book My spirit animal

11-22-2012, 11:03 AM	#27
BigV Goon Squad Leader Join Date: Nov 2004 Location: Seattle Posts: 27,063	!!! well I don't but twil does. I was monkeying around with hers while she was mixing the pumpkin pie fillling and I discovered the little chrome cover that hides the front PTO. that's the power take off for accessories that don't use the bowl. I noticed that it has what looks like a half inch square drive. and I noticed that the whole drive/head tilts upward. and I noticed that the speed control is adjustable and looks like it starts pretty slow. could this be the drive unit for your Clod-traption? __________________ Be Just and Fear Not.

11-22-2012, 05:53 PM	#28
Clodfobble UNDER CONDITIONAL MITIGATION Join Date: Mar 2004 Location: Austin, TX Posts: 20,012	I'll have to check when I get home (at the in-laws' for Thanksgiving right now,) but I think the head doesn't tilt all the way back, just 45 degrees or so. I could maybe make her stand beneath it and look up, though. To be honest I've lost most of my steam for the project though, they've already moved on to more advanced exercises in therapy. They did a reevaluation with the doctor last week to see how she's doing, and everything was greatly improved. It's cool to watch her picking out 3D stereogram pictures that she simply could not see 10 weeks ago. __________________ My book My other book My spirit animal

11-22-2012, 06:34 PM	#29
BigV Goon Squad Leader Join Date: Nov 2004 Location: Seattle Posts: 27,063	"greatly improved" what a great problem to have! enjoy your company and your holiday. we'll continue later. happy thanksgiving __________________ Be Just and Fear Not.

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