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by illusionist
January 5th, 2013, 7:47 am
Forum: 2013 Build Events
Topic: Robot Arm C
Replies: 425
Views: 41970

Re: Robot Arm C

I know that the bonus jug is unmodified besides the cap but has anybody noticed any trends of which way the handle is facing on the jug? I haven't noticed any trend. There's no rules regarding which way it will face, in fact it might very between competitors at the same tournament, unless the judge...
by illusionist
December 8th, 2012, 1:49 pm
Forum: General Chat
Topic: Your Daily Random Comment
Replies: 24233
Views: 1424340

Re: Your Daily Random Comment

STANFORD ISN'T RELEASING TODAY THE WAITING IS GOING TO KILL ME I told you, they release the Friday before the 15th! It was the 9th for us, but it'll be the 14th for you. Good luck! :) Speaking of Stanford... our Korean Student Association just made a parody of Gangam Style (the second variation of ...
by illusionist
December 4th, 2012, 1:06 pm
Forum: 2013 Build Events
Topic: MagLev C
Replies: 528
Views: 49442

Re: MagLev C

Is it possible to calculate how much thrust is required from my motor/propeller without worrying too much about friction and aerodynamics of the maglev vehicle?
by illusionist
December 2nd, 2012, 2:03 pm
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 70418

Re: Elastic Launched Glider C

Speaking of launching... How do you avoid hitting the launch handle? Having a 0-0 (the ideal?) incidence would mean that no lift is produced, which would mean that the glider travels in a straight line and is destined to collide with the top of the handle, right? Also, the rubber is pulling the glid...
by illusionist
November 29th, 2012, 12:14 pm
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 70418

Re: Elastic Launched Glider C

What are approximate fuselage dimensions that have worked well? I'm currently using 3/8 x 1/8 as listed in the simple simon plans, but it's extremely heavy. If I use a thinner piece, I would need to create an external hook for the rubber. What are the best ways to go about doing so? Would something...
by illusionist
November 28th, 2012, 2:22 pm
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 70418

Re: Elastic Launched Glider C

What are approximate fuselage dimensions that have worked well? I'm currently using 3/8 x 1/8 as listed in the simple simon plans, but it's extremely heavy. If I use a thinner piece, I would need to create an external hook for the rubber. What are the best ways to go about doing so? Would something ...
by illusionist
November 21st, 2012, 6:30 pm
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 70418

Re: Elastic Launched Glider C

Many of the plans on AMA have wings that are bent at the ends (can't recall the term for it). Are these created by bending the wood itself, or by cutting and gluing the ends at an angle?
by illusionist
November 21st, 2012, 7:54 am
Forum: 2013 Build Events
Topic: Gravity Vehicle C
Replies: 426
Views: 45158

Re: Gravity Vehicle C

Why use such a thin chassis? Weight is not your enemy in this event. Also, I might suggest throwing a rubber washer in between your wingnut and your frame. This slows the application of braking force, which should reduce skid and chassis flex. Not sure if I'm misunderstanding it, but won't a rubber...
by illusionist
November 17th, 2012, 11:56 am
Forum: 2013 Build Events
Topic: Robot Arm C
Replies: 425
Views: 41970

Re: Robot Arm C

We just started doing this in my Physics C class, and it can become fairly complex. Also, when you're setting up counterweights you also need to remember that as soon as you pick an object up, it will change the balance of the whole system. And if you have more joints further out from the one you'r...
by illusionist
November 16th, 2012, 6:44 pm
Forum: 2013 Build Events
Topic: Robot Arm C
Replies: 425
Views: 41970

Re: Robot Arm C

How do you calculate how much mass is required for the counterweight? I don't think this question has been brought up before... Should I weigh the arm and add that to the other end? I used some AP Physics stuff we learned on center of masses and moments of interia with calculus. What it boils down ...

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