Search found 1678 matches

by illusionist
November 16th, 2012, 6:19 pm
Forum: 2013 Build Events
Topic: Robot Arm C
Replies: 425
Views: 43969

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?
by illusionist
November 15th, 2012, 3:08 pm
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 73103

Re: Elastic Launched Glider C

If I were to take the Simple Simon Plan (20cm wingspan), and enlarge it so that it has ~30cm wingspan, would I have to lengthen all the other measurements by the same percentage in order to maintain proper balance and flying characteristics?
by illusionist
November 11th, 2012, 8:23 am
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 73103

Re: Elastic Launched Glider C

What are some recommendations for buying balsa online (I'm looking to buy sheets of 1/32")? I've done a search through last year's forum, but I'm unable to find the discussion about buying balsa online there. I think someone had bad experiences with a certain company, though I can't remember which ...
by illusionist
November 10th, 2012, 2:02 pm
Forum: 2013 Build Events
Topic: Elastic Launched Glider C
Replies: 454
Views: 73103

Re: Elastic Launched Glider C

What are some recommendations for buying balsa online (I'm looking to buy sheets of 1/32")? I've done a search through last year's forum, but I'm unable to find the discussion about buying balsa online there. I think someone had bad experiences with a certain company, though I can't remember which o...
by illusionist
November 4th, 2012, 6:39 pm
Forum: 2013 Build Events
Topic: Robot Arm C
Replies: 425
Views: 43969

Re: Robot Arm C

Adding the counterweight will increase the moment of inertia, and require more torque from the motor to move the segment, but generally it simply results in slower movements, unless you have a really underpowered servo. The advantage is that it can require absolutely no power to keep to the arm in ...
by illusionist
November 1st, 2012, 4:28 pm
Forum: 2013 Build Events
Topic: MagLev C
Replies: 528
Views: 51877

Re: MagLev C

As I'm testing my first vehicle base on the track, I've noticed that the magnets underneath the vehicle are drawn towards the sides of the magnetic tape on the track. This is causing the vehicle to rub against the sidewall for the entire length of the track. Are there any solutions to this?
by illusionist
October 30th, 2012, 6:24 pm
Forum: 2013 Build Events
Topic: Gravity Vehicle C
Replies: 426
Views: 48399

Re: Gravity Vehicle C

Here's a question that I hope is pretty simple... I got my shafting in today, I've had the bearings for a while, I mic'd the shaft, it's round and .1250" in diameter, I got the bearings from a pretty large manufacturer of bearings(sdp/si), they're abec rated, etc, so I trust that they're .125 id, b...
by illusionist
October 28th, 2012, 9:08 am
Forum: 2013 Build Events
Topic: MagLev C
Replies: 528
Views: 51877

Re: MagLev C

Has anyone had trouble getting their vehicle to float at 250 grams? We're using the Kelvin magnetic tape set, and the vehicle doesn't float more than maybe 1 or 2 mm The underside of the vehicle also has the Kelvin magnetic tape attached.
by illusionist
October 25th, 2012, 2:47 pm
Forum: 2013 Build Events
Topic: Gravity Vehicle C
Replies: 426
Views: 48399

Re: Gravity Vehicle C

XJcwolfyX wrote:And when it says elevated, that means the wheels can be anywhere above the ground, correct?
Yes. This means that you can't have one set of wheels (the rear axle) on the ramp and the front set of wheels touching the floor.
by illusionist
October 25th, 2012, 11:52 am
Forum: 2013 Build Events
Topic: Gravity Vehicle C
Replies: 426
Views: 48399

Re: Gravity Vehicle C

"The entire vehicle, including the wheels, must start from an elevated, non-horizontal position on the team's ramp." Can someone define "non-horizontal position" for me and explain it too? Thanks :D Don't think there's much room for doubt on the phrasing of that. Anyway, it means that the vehicle c...

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