Recent content by Stinson

I'm surprised a 70% is a B, in Florida that's a C-, but I got mid 60's my first run at calc 1 (D), had to retake, then passed calc 2 (harder), calc 3 (honestly not that bad) and differential equations (absolute nightamare) I got C's in all of them but I've passed all the math requred for...

Just letting you know I haven't forgotten this thread. Physically broke the car a week or so ago during trasnport. Tried to hot glue it back together but wasn't really successful. All the structurally unwise prototype sawing compounded together and it snapped in half where the magnet would go...

Presentation day was yesterday. It worked and we scored a 2! Professor graded it himself saying he thought it was excellent and insinuated it may have been a 3 except the lack of teamwork. Easily put 100 hours into this thing over the last 10 days, so after the presentation I just skipped my...

*no pictures because I took the whole system completely apart, sawed off the excess wood, and painted it (still wet at the moment). I'm going to put it all back together in a more permanent configuration with more permanent and efficient soldered connections as opposed to just mashing wires...

Oooooooh brilliant. When you said "brushes" earlier I thought you meant brushes in general. Like starter motors have "brushes". You mean like a hair brush. ::mind blown:: My current setup has regular 18 gauge wire in a U shape. My next prototype will be a metal plate suspended lightly lower than...

It works. Automated. The car moves from coil to coil with the flip of a switch. It is incredibly slow though. I'm trying to think of ways to optimize the system. Three biggest areas: quality of connections, friction, more and larger electromagnets. The connections are sloppy because I have been...

Sorry for posting drama yesterday in a passion filled rage. I regret doing it and It won't happen again. I don't know what will happen with that but as of now no change. I'm not letting them break down everything I've accomplished in a sudden realization of their laziness to put together a...

Like...If they would just let me do the project I was happy to do it without complaints. They don't want to touch a tool though. Psych majors and the like. It's true that I'm an EE major on paper but this is physics 2...it's the first class I've ever taken that deals with electricity, so we're...

Can you just connect 2 of the coils and then a 3rd to stop it? What we need for the project you already built but instead of connecting all 4 and then 1 to stop it you can just finish it by connecting 2 .. it's the same as what you were trying to do just less connections Me: No. You build this...

This was the motor demonstration referenced. They don't understand the concept that the wire has enamel and it is scraped off with 180 degree separation. I explained it to them and showed the my own coils with scraped off enamel all the way around. We agreed to disagree. I need to study for my...

My current conversation with my group memebers who so far have contributed 0%. They're pulling the plug on me. Guess I'm just building this project for fun now, which is cool. I had fun.Hey I talked to bindell after class and he doesn't want us to over complicate the project I told him back that...

Oh that's awesome. I really like the school. Nice campus, all of my professors (I just started and cherry picked from rate my professor so take that with a grain of salt) have been great. There is an engineering lab I discovered yesterday where you go to take problems like the one I'm working...

Tried to make the system fail on purpose without shorting just to test the limits and one of the magnets started smoking (expected). I'm curious about long term damage to the magnet from this though. Do you think it will be good as new when it cools off again or will it be a little retarded? I...

My main worry at the moment in that regard is too little friction. There isn't anything but a twist holding it to the shoe. I was thinking about hot gluing a small nut to the foil high enough so the nut doesn't drag on the track but low enough so it forces the foil down from its base. They are...

Presentation pushed back to Monday because some of the groups aren't close to ready. I'm basically done. My original spring system for the shoe failed. It consisted of a trimmed 3x5 index card folded into a spring with a metal plate on the bottom. It seemed ideal because the index card would be...