Go to Post Winning is an outcome, not the whole point. - StephLee [more]
Home
Go Back   Chief Delphi > FIRST > General Forum
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Reply
Thread Tools Rate Thread Display Modes
  #31   Spotlight this post!  
Unread 20-01-2017, 18:54
Lil' Lavery Lil' Lavery is offline
TSIMFD
AKA: Sean Lavery
FRC #1712 (DAWGMA)
Team Role: Mentor
 
Join Date: Nov 2003
Rookie Year: 2003
Location: Philadelphia, PA
Posts: 6,655
Lil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond reputeLil' Lavery has a reputation beyond repute
Send a message via AIM to Lil' Lavery
Re: How much Power?

Quote:
Originally Posted by Ginger Power View Post
Half second climbs are going to be a very real thing...
But why? I can understand lightning fast climbs in previous games, since it afforded you to spend more time on other actions right up until the end of the match. That's far less important in 2017. There's no such thing as "buzzer beaters" in 2017. Fuel takes 1-2 seconds to process at the very least (and can get backed up due to the limited processing rate). Gears are even worse, as the gears aren't actually what's being scored, rotors is. You have to allow time to place the gear on the lift, raise the lift, take the gear off the lift, place the gear on the airship, and spin the crank 3 times. That's going to take a few seconds at the very least. There's really very little advantage to being able to climb in <3 seconds.

I simply don't see the need to throw 800-1000W of power at your climber.
__________________
Being correct doesn't mean you don't have to explain yourself.
Reply With Quote
  #32   Spotlight this post!  
Unread 20-01-2017, 18:59
Nessie Nessie is offline
Registered User
FRC #2702 (Rebels)
Team Role: College Student
 
Join Date: Jan 2017
Rookie Year: 2012
Location: Waterloo
Posts: 15
Nessie is an unknown quantity at this point
Re: How much Power?

Quote:
Originally Posted by frcguy View Post
Drivetrain: 4 CIMs

Intake: 1 775pro

Scale: 1 MiniCIM

Everything else: not using motors
Low goal? I look forwards to seeing vomit bots.
Reply With Quote
  #33   Spotlight this post!  
Unread 20-01-2017, 20:37
cad321 cad321 is offline
Jack of all trades, Master of none
AKA: Brian Wagg
FRC #2386 (Trojans)
Team Role: Alumni
 
Join Date: Jan 2013
Rookie Year: 2012
Location: Burlington, Ontario
Posts: 350
cad321 is just really nicecad321 is just really nicecad321 is just really nicecad321 is just really nice
Re: How much Power?

2386

Drivetrain: 4 CIMs
Intake: 2 775Pros
Indexer: 1 775Pro
Shooter: 1-2 (undecided) 775Pros
Climber: 1 miniCIM
Reply With Quote
  #34   Spotlight this post!  
Unread 20-01-2017, 21:00
Ginger Power's Avatar
Ginger Power Ginger Power is offline
The GreenHorns Team Lead
AKA: Ryan Swanson
FRC #4607 (C.I.S.)
Team Role: Mentor
 
Join Date: Jan 2014
Rookie Year: 2012
Location: Becker, Minnesota
Posts: 893
Ginger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond reputeGinger Power has a reputation beyond repute
Re: How much Power?

Quote:
Originally Posted by Lil' Lavery View Post
But why? I can understand lightning fast climbs in previous games, since it afforded you to spend more time on other actions right up until the end of the match. That's far less important in 2017. There's no such thing as "buzzer beaters" in 2017. Fuel takes 1-2 seconds to process at the very least (and can get backed up due to the limited processing rate). Gears are even worse, as the gears aren't actually what's being scored, rotors is. You have to allow time to place the gear on the lift, raise the lift, take the gear off the lift, place the gear on the airship, and spin the crank 3 times. That's going to take a few seconds at the very least. There's really very little advantage to being able to climb in <3 seconds.

I simply don't see the need to throw 800-1000W of power at your climber.
Very fair points, I hadn't really thought about the fact that there are no buzzer beaters this year. My thinking was simply less climb time meant more scoring time. I suppose there isn't a huge advantage to climbing in .5 seconds vs. climbing in 2 seconds.

I think we're going to see many robots using the same motors to power multiple subsystems both through the use of PTO's and through pure creativity. I think that'll lead to a lot of teams being able to climb very quickly, hence why I said we'll see a lot of .5 second climbs. While .5 seconds might have been an exaggeration, I still think we'll see a lot of really fast climbs.
__________________
Bison Robotics President
35 new FRC volunteers from Bison Robotics
The GreenHorns Project Lead:
Reveal Video
White Paper
Reply With Quote
  #35   Spotlight this post!  
Unread 22-01-2017, 14:28
MrForbes's Avatar
MrForbes MrForbes is offline
Registered User
AKA: Jim
FRC #1726 (N.E.R.D.S.)
Team Role: Mentor
 
Join Date: Feb 2006
Rookie Year: 2006
Location: Sierra Vista AZ
Posts: 6,033
MrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond reputeMrForbes has a reputation beyond repute
Re: How much Power?

so far....

4 CIM drivetrain
1 CIM climb
1 compressor
Reply With Quote
  #36   Spotlight this post!  
Unread 22-01-2017, 19:13
Donut Donut is offline
The Arizona Mentor
AKA: Andrew
FRC #2662 (RoboKrew)
Team Role: Engineer
 
Join Date: Mar 2005
Rookie Year: 2004
Location: Goodyear, AZ
Posts: 1,313
Donut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond reputeDonut has a reputation beyond repute
Re: How much Power?

Drivetrain: 4 CIMs
Fuel intake: 1 Bag or MiniCIM
Fuel indexer and injector: 1 MiniCIM or CIM (we are a low goal bot)

Still designing our gear manipulator, could use 1 Bag or may be passive.
__________________
FRC Team 498 (Peoria, AZ), Student: 2004 - 2007
FRC Team 498 (Peoria, AZ), Mentor: 2008 - 2011
FRC Team 167 (Iowa City, IA), Mentor: 2012 - 2014
FRC Team 2662 (Tolleson, AZ), Mentor: 2014 - Present
Reply With Quote
  #37   Spotlight this post!  
Unread 22-01-2017, 19:38
Dan Waxman Dan Waxman is offline
Registered User
FRC #0263 (Aftershock)
Team Role: Programmer
 
Join Date: Feb 2016
Rookie Year: 2016
Location: Long Island
Posts: 35
Dan Waxman is an unknown quantity at this point
Re: How much Power?

Drivetrain: 4 CIMs
Gear: 1 Window Motor
Ball Shooter: 1 MiniCIM and possibly a servo
Ball Intake: 2 BAG Motors
Rope Climber: 1 CIM
Reply With Quote
  #38   Spotlight this post!  
Unread 22-01-2017, 20:57
Valkonn's Avatar
Valkonn Valkonn is offline
Registered User
AKA: Paulo Garcia
FRC #3495 (Mindcraft Robotics)
Team Role: Mechanical
 
Join Date: Jan 2016
Rookie Year: 2014
Location: Fresno, CA
Posts: 41
Valkonn is an unknown quantity at this point
Re: How much Power?

Drivetrain: 4 CIMs
Intake/Conveyor: 1-2 Mini CIMS
Second Conveyor: 1 Bag
Shooter: 2 775 pros
Climber: 1 CIM

Hopefully all this jazz doesn't drain our battery too fast...
__________________
Copy the best, screw up the rest.
Reply With Quote
  #39   Spotlight this post!  
Unread 22-01-2017, 21:10
dirtbikerxz's Avatar
dirtbikerxz dirtbikerxz is offline
Captain | Driver | CAD | Junior
AKA: Rohit Gondi
FRC #3991 (KnightVision)
Team Role: Driver
 
Join Date: Nov 2014
Rookie Year: 2015
Location: Baton Rouge, LA
Posts: 493
dirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud ofdirtbikerxz has much to be proud of
Re: How much Power?

DriveTrain: 6cims
Intake: 1 775pro
Elevator: 2 775pros
Shooter: 1 775pro
Climber: 2 775pros
1 revrobotics servo module

and 4 pneumatic cylinders
__________________

Team 3991: Driver since freshman (2015-), Captain since sophomore (2016-), CADer
"The human condition is not perfect. We are not perfect specimens, any of us. We're not robots." - Michael Ovitz
My posts may or may not reflect the views of my team, they are my opinions, and mine alone.
Reply With Quote
  #40   Spotlight this post!  
Unread 24-01-2017, 09:03
Kartoffee Kartoffee is offline
Registered User
FRC #2834
 
Join Date: Jan 2016
Location: Michigan
Posts: 47
Kartoffee is a name known to allKartoffee is a name known to allKartoffee is a name known to allKartoffee is a name known to allKartoffee is a name known to allKartoffee is a name known to all
Re: How much Power?

The Bionic Blackhawks are using:

Drivetrain - 6 CIM's
Shooter - 1 775 pro (though I'm pushing for 2)
Intake - 2 BAG
Climber - 1 mini CIM
Gear - 1 bag and 1 snowblower/servo for actuating our grip on the gear

Unfortunately, I'm not sure I can really reveal too much information yet, but we're looking like we might be too tight on space to afford extra motors.

Our team is highly in favor of powerful drivetrains. Last year, we had only 4 CIMS, due to the design of our raised middle wheels to assist with the breach (4 wheels on carpet, 6 on some defenses). However, we also chose a 2 reduction clamping gearbox, and 8" wheels that made us both fast and strong. This year, we planned to do the same, but with 6 4" wheels instead. We calculated the speed to be about 4 ft/s, so that was quickly shot down. We would use the WCD design, but space is limited and the belts are obnoxious. I think what we did was a valid trade off, but I think we struck a balance of power and speed. No, we will not be using anything like Mecanum or Swerve. I don't plan on spoiling what we did with 6 CIMs though.

Our shooter currently has 1 775 pro, which is quite under powered. I'm in favor of adding another directly opposing, and removing our 3:1 reduction. This would give us a 2:1 stalling torque, yet still a 1:1 speed. As it stands, we barely reach the goal at maxed power (4 inch flywheel). My only concern is voltage. Last year, with 2 775's on our shooter, we had to be lined up before revving, else our voltage would drop and we couldn't move left and right. I think not having literally a square of pneumatic wheels would help.

As for the gear mechanism, well, let's just say I hope you guys get to see it sometime. It's really... unique? We hope that our strategy was correct and people don't plan on driving over gears.

Our climber is a winch, about 1.5-2" diameter, that will climb up webbing. It's a quick little thing, so we'll see how we do.

Our intake, in its prototype form, is required to throw the fuel up about 18". I hope this isn't the final design, especially with BAGs being inferior to 775's.
__________________
Always blame the CAD team.
Reply With Quote
  #41   Spotlight this post!  
Unread 24-01-2017, 10:05
jijiglobe's Avatar
jijiglobe jijiglobe is offline
Registered User
FRC #0694
 
Join Date: May 2013
Location: United States
Posts: 134
jijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant futurejijiglobe has a brilliant future
Re: How much Power?

Quote:
Originally Posted by Ginger Power View Post
Half second climbs are going to be a very real thing...
Not 100% convinced that 1/2 second climbs will be worth it this year. Given the delay on ball scoring, using the last seconds of the match to score balls is less likely to come into play than in previous years. A 1 second climb doesn't seem unreasonable to me with a 2 Cim climber, so I suspect 271 has something more interesting up their sleeves.

But maybe that's just because I like them
__________________

RoboRio
Rob/oRio
oRio

photo credits to Greg McKaskle
Reply With Quote
  #42   Spotlight this post!  
Unread 24-01-2017, 10:33
MoistRobot's Avatar
MoistRobot MoistRobot is offline
Registered User
AKA: Jon Charboneau
FRC #0832 (OSCAR)
Team Role: Mentor
 
Join Date: Dec 2013
Rookie Year: 2007
Location: United States
Posts: 45
MoistRobot is a glorious beacon of lightMoistRobot is a glorious beacon of lightMoistRobot is a glorious beacon of lightMoistRobot is a glorious beacon of lightMoistRobot is a glorious beacon of light
Re: How much Power?

We'll be using-
drive train- 4 cims
shooter- 2 775 pros
collector- 1 775 pro
indexer- 1 bag
winch- 1 bag
various pneumatics
Reply With Quote
  #43   Spotlight this post!  
Unread 24-01-2017, 10:42
JamesCH95's Avatar
JamesCH95 JamesCH95 is offline
Hardcore Dork
AKA: JCH
FRC #0095 (The Grasshoppers)
Team Role: Engineer
 
Join Date: Dec 2004
Rookie Year: 2001
Location: Enfield, NH
Posts: 1,891
JamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond reputeJamesCH95 has a reputation beyond repute
Re: How much Power?

6 CIM Drive
2 MiniCIM Climber
1x 775 pro shooter
1x 775 pro intake
1x ??? agitator
1x compressor
__________________
Theory is a nice place, I'd like to go there one day, I hear everything works there.

Maturity is knowing you were an idiot, common sense is trying to not be an idiot, wisdom is knowing that you will still be an idiot.
Reply With Quote
  #44   Spotlight this post!  
Unread 24-01-2017, 10:49
Chris is me's Avatar
Chris is me Chris is me is offline
no bag, vex only, final destination
AKA: Pinecone
FRC #0228 (GUS Robotics); FRC #2170 (Titanium Tomahawks)
Team Role: Mentor
 
Join Date: Dec 2008
Rookie Year: 2006
Location: Glastonbury, CT
Posts: 7,786
Chris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond repute
Send a message via AIM to Chris is me
Re: How much Power?

These aren't yet finalized for the most part. This is for 228.

4 CIM - Drivetrain
1 CIM (option for 2) - Climber
3 775pro - Shooter
1 BAG - Dumper
1 Minicim - Indexer
1 Minicim - Intake
1 BAG - Gear Roller

Some of the BAGs and MiniCIMs might get switched around, or replaced with more 775pros. Lots of VPs involved here.

I think our pneumatic usage will probably warrant an onboard compressor.
__________________
Mentor / Drive Coach: 228 (2016-?)
--2016 Waterbury SFs (with 3314, 3719), RIDE #2 Seed / Winners (with 1058, 6153), Carver QFs (with 503, 359, 4607)
Mentor / Consultant Person: 2170 (2017-?)
.
College Mentor: 2791 (2010-2015)
-- 2015 TVR Motorola Quality, FLR GM Industrial Design -- 2014 FLR Motorola Quality / SFs (with 341, 4930)
-- 2013 BAE Motorola Quality, WPI Regional #1 Seed / Delphi Excellence in Engineering / Finalists (with 20, 3182)
-- 2012 BAE Imagery / Finalists (with 1519, 885), CT Xerox Creativity / SFs (with 2168, 118)
Student: 1714 (2009) - 2009 MN 10K Lakes Regional Winners (with 2826, 2470)
2791 Build Season Photo Gallery - Look here for mechanism photos My Robotics Blog (Updated April 11 2014)

Last edited by Chris is me : 24-01-2017 at 10:53.
Reply With Quote
  #45   Spotlight this post!  
Unread 24-01-2017, 10:50
Monochron's Avatar
Monochron Monochron is offline
Engineering Mentor
AKA: Brian O'Sullivan
FRC #4561 (TerrorBytes)
Team Role: Engineer
 
Join Date: Feb 2007
Rookie Year: 2002
Location: Research Triangle Park, NC
Posts: 920
Monochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond reputeMonochron has a reputation beyond repute
Re: How much Power?

Quote:
Originally Posted by JohnFogarty View Post
1102

Drive - 4 x CIM motors
Intake - 1 or 2 Bag motors
Agitator - 1 x Bag motor
Shooter - 2 x 775 Pro motors or 3 x mini CIM motors
Climber - 2 x CIM motors.
Are they ignoring Gears? Or is that intake for Gears/Balls/OnlyGears?
__________________


2016 | Innovation In Controls, Industrial Design, Quality Award, NC District - 4th Seed
Reply With Quote
Reply


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 06:46.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi