Forum: Technical Discussion
19-02-2012, 08:49
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Replies: 16
Views: 2,364
Re: Banebot P60 Help
Some suggestions:
Run the motor/transmission when disconnected from your collector. If it still behaves the same, disassemble and look for debris mixed in with the grease. We had a plastic chip...
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Forum: General Forum
14-02-2012, 08:17
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Replies: 3
Views: 675
Re: Sprockets NH
Grainger has a warehouse in Manchester and has some stock available for pickup. It will depend on the part of course.
grainger.com
-Jeff
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Forum: Pneumatics
20-01-2012, 16:38
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Replies: 23
Views: 2,121
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Forum: Pneumatics
20-01-2012, 08:12
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Replies: 23
Views: 2,121
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Forum: Inventor
14-01-2012, 07:32
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Replies: 25
Views: 5,883
Re: FRC 2012 Kit of Parts and Field
Really, Inventor 2012 only?
My school decided not to upgrade, and everyone is still on Inventor 2011
What are our options?
Just use 2011 KoP?
Open in 2012 and save as something (STEP files?)
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Forum: Technical Discussion
13-01-2012, 16:59
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Replies: 13
Views: 3,130
Re: FlyWheel Prototype Help
As maddoctor said, it sounds like the wheels are already slipping through the entire contact with the ball. If I recall correctly, the force on the ball is the normal force x the dynamic coefficient...
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Forum: Technical Discussion
08-01-2012, 08:56
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Replies: 85
Views: 12,230
Re: Let's Talk About The Bridge:
[G37] Final scores will be assessed 5 seconds after the Arena timer hits zero.
So, whatever you do to balance, make sure it stays in position after you lose power.
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Forum: Robotics Education and Curriculum
03-01-2012, 00:09
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Replies: 44
Views: 9,068
Re: Engineering and Robotics program in danger
Jimmy:
Finding space at a mall is an interesting solution. I'd be interested in understanding the costs involved, and how you are managing liability issues. Please send me a private message if you...
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Forum: Robotics Education and Curriculum
26-12-2011, 22:52
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Replies: 44
Views: 9,068
Re: Engineering and Robotics program in danger
Kevin:
Thank you very much for your support by posting to the Nashua Telegraph article, and for starting this thread.
I am also a mentor for 1073 and am working with Frank Grossman and the other...
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Forum: Kit & Additional Hardware
26-12-2011, 22:27
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Replies: 8
Views: 1,879
Re: Questions For T-Slot
1073 regularly uses builds our chassis from 8020 - the 1 inch "1010" series.
The following fasteners are the ones we use most. The price is from an order a couple years ago, but it will give you an...
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Forum: Technical Discussion
19-12-2011, 12:18
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Replies: 15
Views: 2,672
Re: Bearing Block Question
1073 has used a similar approach for several years, using an 6WD with 8020 chassis. Yes, we occasionally need to retension the chains when the blocks slip, but this is typically only once per...
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Forum: Kit & Additional Hardware
21-11-2011, 12:17
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Replies: 18
Views: 3,230
Re: Questions about 80/20
1073 has used an 80/20 chassis for at least 5 years, mostly for the speed of assembly, and ability to add on and adjust brackets & structure as we go. It's great to have on hand to prototpye other...
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Forum: Kit & Additional Hardware
21-11-2011, 12:04
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Replies: 18
Views: 3,230
Re: Questions about 80/20
1073 has used an 80/20 chassis for at least 5 years, mostly for the speed of assembly, and ability to add on and adjust brackets & structure as we go. It's great to have on hand to prototpye other...
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Forum: Inventor
04-11-2011, 10:03
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Replies: 4
Views: 1,849
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Forum: Inventor
26-10-2011, 13:47
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Replies: 4
Views: 1,849
Re: PTC Windchill for Inventor 2011
I think Windchill 9.1 supported Inventor 2010. At least 2010 showed up in the Workgroup Manager when I ran it.
One of my mentors got a test access to Windchill 10, but I don't think the FIRST...
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Forum: Pneumatics
24-10-2011, 17:12
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Replies: 7
Views: 1,207
Re: monitoring air pressure
Team 1073 has used SSI 5V (0.5 to 4.5V output) analog pressure transducers.
Digikey has a good selection in the $68 range.
I think we used the 300 psi rated part, just to avoid any argument with the...
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Forum: Inventor
24-10-2011, 15:45
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Replies: 4
Views: 1,849
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Forum: Inventor
03-10-2011, 13:33
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Replies: 4
Views: 1,849
PTC Windchill for Inventor 2011
I am trying to use Windchill with Autodesk 2011. I thought Windchill usually supported the previous year's edition of Inventor, so we did NOTupgrade to Inventor 2012 this fall. Unfortunately,...
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Forum: Pneumatics
12-05-2011, 13:45
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Replies: 29
Views: 10,737
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Forum: Motors
18-03-2011, 07:00
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Replies: 6
Views: 1,448
Re: Minibot motors/fuses
By "use PTC leads", I recommend the motor power cable that includes the thermal circuit breaker. We use these, and changed to a 5A fuse, and have not had...
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Forum: Motors
11-03-2011, 15:17
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Replies: 3
Views: 680
Re: Need Motors!!!
I've been ordering from legoeducation.us.
Their store shows the W739083 motors in stock.
http://www.legoeducation.us/store/detail.aspx?ID=1610&bhcp=1
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Forum: Motors
08-03-2011, 06:01
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Replies: 24
Views: 20,265
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Forum: Motors
14-02-2011, 12:12
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Replies: 9
Views: 1,632
Re: Denso window motor lockup when under load
From the Team 1640 wiki, the following quote:
"These locking pins lock the drive coupling in one direction in response to excessive torque. "
Does this really describe what the locking pins do, or...
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Forum: Motors
13-02-2011, 23:40
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Replies: 9
Views: 1,632
Denso window motor lockup when under load
We are using the denso motor to direct drive a pincer.
Normally, there is little load on the motor, and the motor drives smoothly in both directions with about 3-4 Volts on a bench power supply. We...
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Forum: Motors
11-02-2011, 17:29
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Replies: 18
Views: 2,747
Re: Smoking RS-550 motors
Al:
This is an forklift/elevator belt running off a 3" diameter timing belt pulley, so there is near continuous load, except for a small increase when the 2nd section of the elevator starts to...
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