Forum: Technical Discussion
07-05-2015, 22:40
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Replies: 18
Views: 3,262
Re: Shop Development
Fly cutters will get you a better surface finish if you go quickly and have your head very square. See 4:25 in this video for a pretty cool demonstration of a good fly...
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Forum: Technical Discussion
07-05-2015, 22:07
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Replies: 18
Views: 3,262
Re: Shop Development
For what we do in FRC, it is totally possible to teach students starting on CNC. Everything we do is aluminum, easy to fixture, and uses pretty basic milling operations with end mills that range...
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Forum: Technical Discussion
26-01-2015, 22:49
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Replies: 41
Views: 8,504
Re: Grabbing 4 Bins from the step in Auto
Its like 4.5 inches thick schedule 80 PVC. Our latch mechanism yanks the container back when it engages, and our plan is to get their fastest.
That said, I do share your concern and we will have...
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Forum: Technical Discussion
25-01-2015, 21:46
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Replies: 41
Views: 8,504
Re: Grabbing 4 Bins from the step in Auto
We're doing a container grabber this year, and it's actually not that difficult. It's just some PVC pipe, and to keep the thing from wobbling all over the place, we've ran some steel cables from the...
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Forum: General Forum
21-08-2014, 19:22
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Replies: 232
Views: 45,062
Re: blog; Motor Controller Options for 2015
I also am not an EE, but have a lot of experience with this sort of stuff. In short, you're right, the higher frequency is proportional to higher interference. That said, I checked the spec sheets,...
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Forum: General Forum
20-08-2014, 18:10
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Replies: 2
Views: 1,140
Re: AutoDesk/Other Software
Honestly, the best way to get better once you have the basics of modeling down, is to just design stuff. You can do tutorials and draw up stuff from books, but the only way to get experience using...
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Forum: Technical Discussion
26-07-2014, 17:10
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Replies: 13
Views: 2,939
Re: High Torque Arm design questions
Okay, I have a few more questions.
I think we're going to be using some gearbox with a single chain reduction.
We are going to drive the arm pivot because we want the arm to be able to rotate 180...
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Forum: Pneumatics
24-07-2014, 19:54
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Replies: 134
Views: 15,961
Re: Pneumatic Restrictions & Improvments
Very true.
This year, we were playing around with a pneumatic launcher, and we wanted to try it with shop air. Strangely, no air was coming from the valve, and after closing all the other valves in...
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Forum: Technical Discussion
22-07-2014, 12:36
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Replies: 1
Views: 985
Motors in reverse and stall torque.
I have a question about electric motors. How much torque do you get when trying to go the opposite way the motor is turning, like when trying to stop a robot?
I believe that it is equal to stall...
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Forum: General Forum
12-07-2014, 15:42
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Replies: 28
Views: 18,703
Re: Team 254 - 2014 FRC Code
That sounds really cool. Any chance of a picture of it? I don't have something to build the program with at home.
As for the acceleration problem, you could locate local minimums for velocity,...
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Forum: Technical Discussion
26-06-2014, 21:26
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Replies: 12
Views: 2,476
Re: "Screw" Drive for FRC
Why? If the thread were to be covered in tread, I believe it would work well. You would have a thinner contact area than a typical wheel, but you would contact the ground in multiple places.
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Forum: Technical Discussion
26-06-2014, 19:52
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Replies: 12
Views: 2,476
Re: "Screw" Drive for FRC
Again, I'm not saying this is a design that's right for FRC, I'm just throwing it out there because I'm doing it for a mini demo robot. The single 775 design would never be used for FRC. This robot...
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Forum: General Forum
26-06-2014, 18:57
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Replies: 28
Views: 5,921
Re: Alpha Weekend #2, 2015 Control System
Forgive me if this is on a website, or already posted, but I have a few questions about the new control system.
1. How are the times to deploy code, reimage, reboot, or connect?
2. What is the...
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Forum: Technical Discussion
26-06-2014, 18:04
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Replies: 12
Views: 2,476
"Screw" Drive for FRC
So, for a project related to school, but no the robot team, I'm working on a drive system concept. The idea is to be able to have some type of new or unique omnidirectional style of drive, so I...
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Forum: General Forum
06-06-2014, 18:01
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Replies: 89
Views: 17,735
Re: LAS VEGAS REGIONAL... terminated?
I agree with everything you've written. Keeping teams in is really important, and not all schools are ready for a team. Sure, LVR might not be profitable this year, but if FIRST truly believes that...
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Forum: General Forum
06-06-2014, 15:53
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Replies: 89
Views: 17,735
Re: LAS VEGAS REGIONAL... terminated?
That's unfortunate.
I really love the extra playing time given to teams in districts, but don't you guys think it's important to help out the teams that are located where there aren't a million...
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Forum: Technical Discussion
18-04-2014, 10:58
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Replies: 6
Views: 1,924
Re: CNC Gears and CAM
I wasn't actually there when the cut happened, but I'm assuming they did what you said, and used a set screw where there wasn't a flat. We'll be getting in touch with Tormach soon to try to fix the...
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Forum: Technical Discussion
18-04-2014, 09:50
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Replies: 6
Views: 1,924
Re: CNC Gears and CAM
We discovered last night that the poor performance we had been experiencing with the tormach only happens when we travel in the y axis. It also appears that the shaft off of the motor that drives...
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Forum: Games/Trivia
17-04-2014, 21:42
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Replies: 21
Views: 1,766
Re: [2014] CMP prop bets returns
1. True
2. False
3. True
4. False
5. False
6. True (because of fouls)
7. false
8. False (but somebody will get close)
9. True
10. True
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Forum: Technical Discussion
17-04-2014, 21:36
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Replies: 6
Views: 1,924
CNC Gears and CAM
This year, for our rotating arm, our team needed a 17 tooth 20 DP gear, so I cut them, on a bridgeport, using an involute gear cutter we had laying around. I made 3 2 inch long gears and parted off...
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Forum: CAD
15-04-2014, 18:59
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Replies: 8
Views: 1,461
Re: How to Open 118 CAD File?
I opened it up pretty easily in both inventor 2013 solidworks at home on a pretty crappy computer. Try opening it in a different CAD program. In order to really look at the model, you will need to...
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Forum: General Forum
15-04-2014, 18:52
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Replies: 29
Views: 7,572
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Forum: General Forum
02-03-2014, 17:52
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Replies: 408
Views: 85,435
Re: Week 1 Analysis
This is the best post I've read all week.
The game is, IMO, broken because of the overused penalties, delayed scoring, incorrect scoring, lack of rule knowledge by referees, 2003-style defense...
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Forum: General Forum
01-02-2014, 20:13
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Replies: 17
Views: 4,689
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Forum: Programming
01-02-2014, 20:13
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Replies: 18
Views: 2,863
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..attitude and willingness to work as a team...are the qualities that can make or break a team. - Monochron [more] 
