Search found 88 matches

by soyuppy
October 23rd, 2017, 11:11 am
Forum: 2018 Lab Events
Topic: Thermodynamics B/C
Replies: 857
Views: 112792

Re: Thermodynamics B/C

A quick easy to build effective device. Sized for either B or C div. For an outer container I used a Breakstone 24 oz cottage cheese plastic container. Beaker was a Pyrex Vista 250 ml. Next I took a 32 oz styrofoam soft drink cup from a gas station, Dart brand. Mark the cup before cutting and use a...
by soyuppy
October 5th, 2017, 11:53 pm
Forum: 2018 Invitationals
Topic: Wicklund Invitational Div B
Replies: 0
Views: 578

Wicklund Invitational Div B

Wicklund will be holding the 4th annual invitational on Feb 3rd, 2018.
http://wicklundso.com/
by soyuppy
May 23rd, 2017, 5:09 pm
Forum: 2017 Lab Events
Topic: Wind Power B/C
Replies: 338
Views: 41096

Re: Wind Power B/C

Does anyone know what the best blades at nats looked like? Were they lift-based? Were they 3d printed? What material were they made of? Did they extend to the center of the CD or only near the outside? I'm also curious to know this. Also, anyone know the top voltage scores? We came in 8th with 335 ...
by soyuppy
March 19th, 2017, 1:23 pm
Forum: 2017 Lab Events
Topic: Wind Power B/C
Replies: 338
Views: 41096

Re: Wind Power B/C

Here's a PSA to all of you with low-pitch designs. Make sure that the pitch is adjustable. Our blade was designed for an average fan, and we medaled at every competition. Then at regionals their high speed was lower than our low speed, and our blade didn't move. We couldn't change anything because ...
by soyuppy
March 4th, 2017, 5:24 am
Forum: 2017 Lab Events
Topic: Wind Power B/C
Replies: 338
Views: 41096

Re: Wind Power B/C

I mean of a rotor also can someone help me with this question? A power plant in Chicago is generating 900 MW on a 700 KV line. Assuming the line is 100 kilometers long, with a resistance along the line of 0.2 ohms, what is the current along the lines When I use I=V/R I get 3500kA but when I use I=P...
by soyuppy
January 20th, 2017, 7:18 am
Forum: General Chat
Topic: cannot send out PM
Replies: 1
Views: 471

cannot send out PM

Has there been changed in how/when we can send out PM? I can receive and read PM, but can't reply or send out. I used to be able to send out PM, but now all my PM is stuck in outbox. Tried to contact administrator twice, and never got any response either. Admin can you please chime/response to this ...
by soyuppy
January 8th, 2017, 11:35 am
Forum: 2017 Lab Events
Topic: Wind Power B/C
Replies: 338
Views: 41096

Re: Wind Power B/C

Just post similar question to SO inc.
When you buy a bundle of CD/DVD, usually come in 25/50/100, you get the plastic filler. Can this plastic filler be used for blade? Has the same dimension as CD/DVD, but it's much lighter.
by soyuppy
January 8th, 2017, 8:18 am
Forum: 2017 Lab Events
Topic: Wind Power B/C
Replies: 338
Views: 41096

Re: Wind Power B/C

Unome wrote:Was this B or C? (I'll go ahead and assume this was at Mira Loma yesterday)
B
by soyuppy
January 8th, 2017, 8:03 am
Forum: 2017 Lab Events
Topic: Wind Power B/C
Replies: 338
Views: 41096

Re: Wind Power B/C

Has any of you been to an invitational and know of top high and low voltage scores at the event? Please post the resistance used in the setup. Thanks! I just helped ran an invitational event. CD motor: https://www.amazon.com/gp/product/B00OTCPDKW/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Load R: 1...

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