Comments for Darrell Ross http://www.eukota.com Energy Modeling, Math, IT, Music, Origami, Gardening, Politics, etc. Thu, 11 Mar 2010 02:44:07 +0000 http://wordpress.org/?v=2.6.1 Comment on Spinning Wheel Design (Idea) by allison http://www.eukota.com/index.php/2009/02/22/spinning-wheel-design-idea/#comment-1497 allison Fri, 12 Feb 2010 02:37:46 +0000 http://eukota.com/index.php/2009/02/22/spinning-wheel-design-idea/#comment-1497 I had an idea for this just a little while ago! I AM a spinner so I will tell you a few basic things- When someone starts spinning yarn, it is called a singles-never a 1-ply yarn! If the spinner decides to ply it, it needs to be spun in the opposite direction of the singles that make it up. One big problem is that a derailleur will only turn the wheel in one direction. Now it IS possible to have a wheel simply for spinning singles or plying, it's just slightly less economical. My boyfriend has a Trek mountain bike fitted with a gear shifting system that is just a lever, and tht is what gave me the idea, being able to "increase the throttle" with just a lever. If I ever come across the parts for cheap, I certainly would build it!! :D I had an idea for this just a little while ago!

I AM a spinner so I will tell you a few basic things- When someone starts spinning yarn, it is called a singles-never a 1-ply yarn! If the spinner decides to ply it, it needs to be spun in the opposite direction of the singles that make it up. One big problem is that a derailleur will only turn the wheel in one direction. Now it IS possible to have a wheel simply for spinning singles or plying, it’s just slightly less economical. My boyfriend has a Trek mountain bike fitted with a gear shifting system that is just a lever, and tht is what gave me the idea, being able to “increase the throttle” with just a lever. If I ever come across the parts for cheap, I certainly would build it!! :D

]]> Comment on ThinkPad T30 Supervisor Password Recovery by Jarek James http://www.eukota.com/index.php/2008/10/27/thinkpad-t30-supervisor-password-recovery/#comment-1481 Jarek James Fri, 15 Jan 2010 18:40:00 +0000 http://eukota.com/?p=82#comment-1481 Hi just got a t30 from one of my friends with a fried motherboard I replaced the motherboard and now get a 4 by 4 beep cycle and blank screen. I was wondering if you had the same problem. In any case i removed the little yellow battery (i think the cmos battery). If this doesn't work I am going to make the circuit board as well thanks for the pictures. Hi just got a t30 from one of my friends with a fried motherboard I replaced the motherboard and now get a 4 by 4 beep cycle and blank screen. I was wondering if you had the same problem.

In any case i removed the little yellow battery (i think the cmos battery). If this doesn’t work I am going to make the circuit board as well thanks for the pictures.

]]> Comment on ThinkPad T30 Supervisor Password Recovery by Babatunde Ayeni http://www.eukota.com/index.php/2008/10/27/thinkpad-t30-supervisor-password-recovery/#comment-1470 Babatunde Ayeni Mon, 04 Jan 2010 05:37:36 +0000 http://eukota.com/?p=82#comment-1470 Darrell, Are you saying that the simple device you built was able to remove the Admin Password on the EEPROM? I have similar problem with my T30. I have thought that simple replacement of CMOS battery would do the magic, but the problem is still there. Always asking for Password after displaying error 0271. Can you please, give me more detailed information about this device. Thanks. Babatunde Darrell,
Are you saying that the simple device you built was able to remove the Admin Password on the EEPROM? I have similar problem with my T30. I have thought that simple replacement of CMOS battery would do the magic, but the problem is still there. Always asking for Password after displaying error 0271.
Can you please, give me more detailed information about this device.
Thanks.
Babatunde

]]> Comment on Farewell California, Hello Texas! by Louis http://www.eukota.com/index.php/2009/06/28/farewell-california-hello-texas/#comment-404 Louis Tue, 30 Jun 2009 16:50:19 +0000 http://eukota.com/?p=325#comment-404 Wow, that is bizarre. You have to register your car in order to change your license? You have to make sure the wipers work? I thought Texas was a state of less government? Anyway, lots of big changes, I hope Abilene turns out to be a nice place to start married life! Best wishes to both of you! Wow, that is bizarre. You have to register your car in order to change your license? You have to make sure the wipers work? I thought Texas was a state of less government?
Anyway, lots of big changes, I hope Abilene turns out to be a nice place to start married life! Best wishes to both of you!

]]> Comment on Farewell California, Hello Texas! by Sharyn http://www.eukota.com/index.php/2009/06/28/farewell-california-hello-texas/#comment-400 Sharyn Sun, 28 Jun 2009 20:19:36 +0000 http://eukota.com/?p=325#comment-400 Don't forget Texas-ism #3: In order to change your driver's license to Texas, you have to register your car in Texas. Refer to Texas-ism #1 :p Don’t forget Texas-ism #3: In order to change your driver’s license to Texas, you have to register your car in Texas. Refer to Texas-ism #1 :p

]]> Comment on Thesis - Model Complete! by wilros http://www.eukota.com/index.php/2009/02/27/thesis-model-complete/#comment-273 wilros Sat, 28 Feb 2009 19:14:33 +0000 http://eukota.com/index.php/2009/02/27/thesis-model-complete/#comment-273 darrell, here's another idea about increasing renewable generation capacity: site solar plants in s. humboldt near the main transmission line that comes north from mendocino county, and in e. humboldt by the main transmission line that comes west from the central valley. as these are the key incoming capacity constraints, turn them into maximum export facilities during peak sunshine hours. that is, export full capacity across the lines to the grid during daylight, then reverse the flow during non-daylight from the grid to cover local demand within the county. thus, build two sets of solar capacity, one for local demand, and one for export. [wr] darrell,

here’s another idea about increasing renewable generation capacity: site solar plants in s. humboldt near the main transmission line that comes north from mendocino county, and in e. humboldt by the main transmission line that comes west from the central valley. as these are the key incoming capacity constraints, turn them into maximum export facilities during peak sunshine hours. that is, export full capacity across the lines to the grid during daylight, then reverse the flow during non-daylight from the grid to cover local demand within the county. thus, build two sets of solar capacity, one for local demand, and one for export.

[wr]

]]> Comment on Thesis - Model Complete! by wilros http://www.eukota.com/index.php/2009/02/27/thesis-model-complete/#comment-272 wilros Sat, 28 Feb 2009 17:15:00 +0000 http://eukota.com/index.php/2009/02/27/thesis-model-complete/#comment-272 darrell, very cool. two comments. 1. what is the sum of surplus power that can be exported during hours of over-capacity in humboldt? 2. can you re-size (increase) the solar and wind generation in your model so that the net surplus exported by humboldt matches the capacity gap between biomass generation and hours of excessive power demand? how about a second wind farm and a third solar facility? this way you would have a theoretical net of zero rather than a negative as you have at present. [wr] darrell,

very cool. two comments.

1. what is the sum of surplus power that can be exported during hours of over-capacity in humboldt?

2. can you re-size (increase) the solar and wind generation in your model so that the net surplus exported by humboldt matches the capacity gap between biomass generation and hours of excessive power demand? how about a second wind farm and a third solar facility?

this way you would have a theoretical net of zero rather than a negative as you have at present.

[wr]

]]> Comment on Spinning Wheel Design (Idea) by wilros http://www.eukota.com/index.php/2009/02/22/spinning-wheel-design-idea/#comment-271 wilros Sat, 28 Feb 2009 17:06:47 +0000 http://eukota.com/index.php/2009/02/22/spinning-wheel-design-idea/#comment-271 darrell, great idea! i'm not a spinner but i believe it requires at least one hand free to moderate the flow of fiber. so, i would take this design in two directions. 1. chances are in the third world a stationary bicycle is already used extensively to power micro-businesses that spin fiber into thread or yarn. try googling for images (lacking broadband, i suggest someone else search the net). this covers the small scale semi-automated production pattern. 2. for the solo spinner, a foot treadle leaving both hands free to moderate the flow of fiber is probably optimal for a human powered spinning operation. see also http://en.wikipedia.org/wiki/Spinning_(textiles)#Contemporary_hand_spinning love, dad darrell,

great idea!

i’m not a spinner but i believe it requires at least one hand free to moderate the flow of fiber. so, i would take this design in two directions.

1. chances are in the third world a stationary bicycle is already used extensively to power micro-businesses that spin fiber into thread or yarn. try googling for images (lacking broadband, i suggest someone else search the net). this covers the small scale semi-automated production pattern.

2. for the solo spinner, a foot treadle leaving both hands free to moderate the flow of fiber is probably optimal for a human powered spinning operation.

see also

http://en.wikipedia.org/wiki/Spinning_(textiles)#Contemporary_hand_spinning

love, dad

]]> Comment on Thesis - Dynamic Supplies by admin http://www.eukota.com/index.php/2009/02/20/thesis-dynamic-supplies/#comment-262 admin Mon, 23 Feb 2009 06:52:20 +0000 http://eukota.com/index.php/2009/02/20/thesis-dynamic-supplies/#comment-262 Hey Pete, Good questions! Actually the data provided in these plots is not useful to anyone but me. :) Or more accurately, my model. I use distance when figuring out which zone gets power from which source -- aiming of course for minimum distance. Part of the idea is leaving T&D out of the model so I do not take substations into account nor phase angle of power, etc. Including that would be far too complex and defeat the purpose (just noting that because it's the first item many power folks mention). I could just calculate total demand and total supply and place them side-by-side. But I feel it's much more instructional to see the locations of the sources. Originally, I was going to include a power loss over distance but have instead opted for preference to nearest sources. I will post a couple images of the model running later this week. Thank you for the comments. Hey Pete,
Good questions! Actually the data provided in these plots is not useful to anyone but me. :) Or more accurately, my model. I use distance when figuring out which zone gets power from which source — aiming of course for minimum distance. Part of the idea is leaving T&D out of the model so I do not take substations into account nor phase angle of power, etc. Including that would be far too complex and defeat the purpose (just noting that because it’s the first item many power folks mention). I could just calculate total demand and total supply and place them side-by-side. But I feel it’s much more instructional to see the locations of the sources. Originally, I was going to include a power loss over distance but have instead opted for preference to nearest sources. I will post a couple images of the model running later this week. Thank you for the comments.

]]> Comment on Spinning Wheel Design (Idea) by Pete Nelson http://www.eukota.com/index.php/2009/02/22/spinning-wheel-design-idea/#comment-261 Pete Nelson Mon, 23 Feb 2009 05:07:43 +0000 http://eukota.com/index.php/2009/02/22/spinning-wheel-design-idea/#comment-261 Cool! Cool!

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