Go to Post They can either incorporate the suggestions in this thread, go totally against them, or even make us all write code on banana peels with our fingernails. - Andy Baker [more]
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Unread 11-08-2003, 17:44
Rickertsen2 Rickertsen2 is offline
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Previous years' First rules.

I have two questions: In previous years has the weight limit been pretty much the same? Second, what about the motors?
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Unread 11-08-2003, 18:08
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1992:
Motors - seat motor was the biggest
Batteries - no battery - tethers were used
Weight - about 30 lbs.
Size - about 2ft x 2 ft x 2 ft
(FIRST had to actually up the voltage through the tethers at the finals due to the fact that many teams could not operate at the low voltage which was being supplied... something like 6 volts, maybe)

1993-1996:
Motors - drill motors(different types), seat motors, window motors were used
Batteries - cordless drill batteries
Weight - somewhat bigger (not sure on specifics)
Size - increased steadily to current size (not as tall, though)

1997:
Motors - drill, seat, window motors
Batteries - cordless drill batteries
Weight - 120 #
Size - 36"x36"x48" (not sure on height, it could've been 60")
... the 36" width was a problem, the robots would not fit through regular sized doors

1998:
Motors - drill, seat, window motors
Battery - same sort of battery as today
Weight - 120 #
Size - 36"x30"x60"

1999:
Motors - drill, seat, window, Van Door, Globe
Battery - same
Weight - 120 #
Size - same

2000:
Motors - drill, seat, window, Van Door, Globe, orange rotary (mainly useless, I forgot the name)
Battery - same
Weight - 130 #
Size - same
... FIRST added the weight to let us use the pneumatics more (the tank was heavy)

2001:
Motors - drill, Fisher-Price, van door, Globe, seat, window, orange rotary, little johnson and johnson
Battery - same
Weight - 130 #
Size - same

2002:
Motors - drill, Chiapua, F-P, Globe, Van Door, Seat
Battery - same
Weight - 130 #
Size - same

2003:
Motors - drill (new), CIM, F-P, Globe, Window
Battery - same
Weight - 130 #
Size - same

There may be some errors in this... it is just from memory.

Andy B.
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Unread 11-08-2003, 18:40
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wow

wow....ah....that's some memory.
I can't even remember my breakfast.
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Unread 11-08-2003, 18:45
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Quote:
Originally posted by Andy Baker
orange rotary (mainly useless, I forgot the name)
That was the B-something Torque Motor. It spun at a blazing 1 RPM.
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Unread 11-08-2003, 19:39
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Quote:
Originally posted by M. Krass
That was the B-something Torque Motor. It spun at a blazing 1 RPM.
And it was "used" (read: provided in the kit) in 2001-2002, not 2000. I once saw it on a website for $ 500, it's used in airplanes and stuff like that. They had a demo at the 2001 kickoff where that motor and a servo were used as a writing arm, with a pen on the end. It had a leverage big enough for the motor to appear ultra slow, compared to the normal speed where you couldn't tell whether it was moving or stopped.
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Unread 11-08-2003, 21:04
Ryan Foley Ryan Foley is offline
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Quote:
Originally posted by M. Krass
That was the B-something Torque Motor. It spun at a blazing 1 RPM.
belimo actuators i believe (we have about 30 thanks to FIRST yardsales)
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Unread 11-08-2003, 22:29
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My memory is slightly different then Andy's, so I'll highlight the differences.

The first year of the 130 lb limit was '98 to allow for the heavier battery, which debuted that year also.

The first year of the 60" height was 2000. '97 through '99 where all 48"
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Unread 11-08-2003, 22:38
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The orange rotary motor was in the 2002 game, i'm not so sure it was in the 2000 game....

Tom
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Unread 12-08-2003, 00:23
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Now that I think of these things... you guys are right. We did have that Belimo motor two years, 2001 and 2002.

Speaking of the Belimo motor, here are the two best uses:

2. Wildstang used it to release their spring-loaded ramp wedge in 2001.

1. The Westside Boiler Invasion (the Purdue-sponsored team) used one to open and close a HVAC vent in the basement of the ME building. They give our team a tour every fall and the tour guide always is proud to point that out to fellow FIRSTers.

Thanks, guys... my brain does get fuzzy.

Rich... I am still absent-minded, though. I can remember this sort of stuff (and team numbers/names), but I have a hard time remembering where I left my wallet or keys.

Andy B.
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Unread 12-08-2003, 07:59
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Quote:
I once saw it on a website for $ 500, it's used in airplanes and stuff like that.

The Belimo motor is actually designed to control air dampers and valves in HVAC (Heating Ventilation And Cooling) systems.

Belimo
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Unread 12-08-2003, 10:18
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Quote:
Originally posted by Ed Sparks
The Belimo motor is actually designed to control air dampers and valves in HVAC (Heating Ventilation And Cooling) systems.

Belimo

Yeah, I was sitting in my cube one day, staring at the ceiling and trying to figure out where all the duct work went (it's a new building for us) when I spotted a familiar motor. Then at last I understood the low torque and rotational speed.
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Unread 13-08-2003, 21:58
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Quote:
Originally posted by Andy Baker
2002:
Motors - drill, Chiapua, F-P, Globe, Van Door, Seat
Battery - same
Weight - 130 #
Size - same
In addition to the Belimo in 2002, there were also 2 window motors, but there were no van door motors.
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Unread 17-08-2003, 16:04
Rickertsen2 Rickertsen2 is offline
Umm Errr...
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Ok thanks for all the replies. There is one thing i forgot though. How has field size been through the years.
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Unread 17-08-2003, 16:43
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Quote:
Originally posted by Rickertsen2
Ok thanks for all the replies. There is one thing i forgot though. How has field size been through the years.
If you are talking about the playing field, the 03 field was 54' x 24', and 48' x 24' for 00', 01' and 02' I believe.
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Unread 17-08-2003, 17:12
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The belimo motor wasn't useless. My team used it in 2001 very effectively. We mainly used it because the guy who got them all donated to FIRST was on our team but it still did the job. As for the field before 1999 the shape was not always rectangular. Often it was hexagon shaped.
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