Forum: Technical Discussion
Yesterday, 01:01 AM
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Replies: 18
Views: 1,104
Re: Easy Bumper Switching?
We use a similar system with grenade pins, but with c-channel. This past year we also used "hook and loop fastener" where the bumpers ended (creating a gap) to prevent them from being bent.
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Forum: General Forum
12-29-2016, 02:57 AM
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Replies: 15
Views: 1,359
Re: Practice Robot?
We've built a full practice robot every year since 2007. Some years had more students than others, but for the 2016 season, we pulled it with 9 students and just about that many mentors. It's...
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Forum: General Forum
12-28-2016, 04:50 PM
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Replies: 11
Views: 746
Re: CIM Like motors for non-FRC use
The larger CIM motor is part number FP801-005 and was commonly referred to as the "minibike" motor. It was legal in 2006 and 2007.
Preformance Sheet:...
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Forum: General Forum
12-04-2016, 08:53 PM
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Replies: 16
Views: 1,664
Re: Button I'm planning on giving out, thoughts?
With enough modification, it would be "legal".
The only issue is that it would require completely recreating the logo in such a way that there is a very clear difference between the original and...
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Forum: Technical Discussion
11-29-2016, 08:26 PM
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Replies: 10
Views: 980
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Forum: General Forum
11-23-2016, 12:52 AM
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Replies: 34
Views: 2,674
Re: 3D Printed Parts on an FRC Robot?
It looks like it may be a combination of a lower layer height, high quality filament, and possibly the way the picture is taken. (you could also have the layers start on the inside of the roller to...
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Forum: General Forum
11-14-2016, 09:48 PM
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Replies: 3
Views: 468
Re: Toughbox Mini
The default unit in most slicers is mm. Exporting in inches is more likely to create a scaling issue.
Edit: Just checked, the scale on the .stl is correct.
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Forum: General Forum
11-10-2016, 12:18 AM
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Replies: 34
Views: 2,974
Re: Swerve vs. Butterfly Drivetrain
I'm not sure if I'm misunderstanding something, but we had an 8 wheel tank this past season. The last time we did anything other than tank drive was in 2009 with our single module "swerve". (closer...
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Forum: General Forum
11-06-2016, 12:10 AM
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Replies: 56
Views: 5,548
Re: Crown Jewel of your Collection
This year's championship alliance captain hat. Everybody on our team got a medal for both the division and Einstein win, but I like the utility of a hat much more.
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Forum: Technical Discussion
11-02-2016, 09:26 PM
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Replies: 16
Views: 1,222
Re: 3D printer: Favorite Filament
You are absolutely correct that there are some brands that have significantly increased strength and durability. Protopasta, 3DXTech, and recently, Colorfabb comes to mind. However, these...
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Forum: Technical Discussion
11-02-2016, 08:48 PM
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Replies: 16
Views: 1,222
Re: 3D printer: Favorite Filament
At this point, filament is filament (for the most part).
A $25 roll of PLA will act almost exactly like another $25 roll of PLA (the same can be said ABS and others). Several filament brands can be...
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Forum: General Forum
10-31-2016, 06:33 PM
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Replies: 54
Views: 6,136
Re: What hath we wrought? 2016 Horror Stories
https://scontent-sjc2-1.cdninstagram.com/t51.2885-15/e35/14498932_1774227702860519_4992721850342572032_n.jpg
9330 during their second semifinals match at BeachBlitz.
We almost scored a low goal...
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Forum: General Forum
10-29-2016, 08:39 PM
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Replies: 16
Views: 2,115
Re: Why insist team 47 around anymore?
I think you're a bit confused.
2009 was 47's last year. The merged with 65 and became 51 (Wings of Fire) starting in the 2010 season.
That thread just contains the information pertaining to why the...
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Forum: General Forum
10-29-2016, 08:01 PM
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Replies: 16
Views: 2,115
Re: Why insist team 47 around anymore?
This thread contains a few tidbits of information regarding the circumstances:
https://www.chiefdelphi.com/forums/showthread.php?t=77565&highlight=chief+delphi+retire
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Forum: Fundraising
10-29-2016, 04:57 PM
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Replies: 34
Views: 2,169
Re: Acquiring a 3D Printer?
+∞
They do have a bulk educational license option, but you only really need one license. (which can be used on 2 computers simultaneously)
It's amazing to see the difference between other...
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Forum: Pneumatics
10-26-2016, 07:56 PM
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Replies: 28
Views: 2,713
Re: pneumatic catapults
We didn't have any issues throughout the season, but I could see that becoming an issue depending on how you decide mount everything.
We're usually pretty careful about metal shavings.
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Forum: Pneumatics
10-26-2016, 06:40 PM
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Replies: 28
Views: 2,713
Re: pneumatic catapults
Make sure to remove the fittings from the cylinder on the venting side to allow for maximum airflow out of the cylinder.
We used surgical tubing (cut in half to further reduce its stregnth) to...
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Forum: Fundraising
10-24-2016, 08:18 PM
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Replies: 34
Views: 2,169
Re: Acquiring a 3D Printer?
But how long did it take to print, how much post processing was required, and how much did the resin cost? 1 liter of resin costs over $150.
In the long term, you also have to factor in the cost of...
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Forum: Fundraising
10-24-2016, 06:39 PM
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Replies: 34
Views: 2,169
Re: Acquiring a 3D Printer?
A SLA printer probably isn't the best option for robotics applications (in our "robots"). FDM/FFF is the way to go 99.9% of the time (SLS being the .1%) if you intend to create functional parts in a...
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Forum: Fundraising
10-24-2016, 06:33 PM
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Replies: 34
Views: 2,169
Re: Acquiring a 3D Printer?
Brook Drumm from Printrbot donated 4 printers to our team during the summer after we sent out a request email to several companies.
He mentioned it on the Printrbot twitter in August and invited...
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Forum: General Forum
10-11-2016, 10:55 AM
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Replies: 52
Views: 4,625
Re: Worst you've seen to the Defenses?
Not exactly to a defense, but this was from a defense:
https://scontent-sjc2-1.cdninstagram.com/t51.2885-15/e35/14498932_1774227702860519_4992721850342572032_n.jpg
During the semifinals at Beach...
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Forum: Extra Discussion
10-06-2016, 05:17 PM
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Replies: 21
Views: 2,248
Re: pic: 24 Years of Game Pieces
It should be noted that 1997 was also a tube.
1997 and 2007 are probably the most similar games in terms of scoring objects and field elements. (tubes on a spinning rack)
The main differences were...
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Forum: Extra Discussion
09-26-2016, 02:51 AM
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Replies: 27
Views: 2,867
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Forum: General Forum
09-24-2016, 04:43 PM
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Replies: 19
Views: 2,971
Re: Best 3rd pick this season
120, hands down.
I was amazed by how long they went unpicked during alliance selections. They didn't have the best seeding, but our scouting data put them far ahead of most of the division.
I...
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Forum: General Forum
09-21-2016, 07:56 PM
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Replies: 16
Views: 1,333
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Heidi's best picture ever - and she didn't even have to Photoshop this one! - dlavery [more] 
