Go to Post Never be afraid to admit your ignorance, and ask someone something. You may just learn something new... - kmcclary [more]
Home
Go Back   Chief Delphi > FIRST > Robot Showcase
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
Closed Thread
Thread Tools Rate Thread Display Modes
  #1   Spotlight this post!  
Unread 05-05-2012, 10:08
404'd's Avatar
404'd 404'd is offline
Lead contributor of sweg
AKA: Josh
FRC #0967 (Iron Lions (9-sits-7))
Team Role: Alumni
 
Join Date: Mar 2011
Rookie Year: 2009
Location: Marion, Iowa
Posts: 86
404'd is a name known to all404'd is a name known to all404'd is a name known to all404'd is a name known to all404'd is a name known to all404'd is a name known to all
967 Off Season Project

Team 967 has been working very hard on a prototype and will be posting teasers of our new drivetrain over the next few weeks. The sheet metal frame is all CNC laser cut by a local manufacturing company, DAD Manufacturing, with parts donated by Master Tool Mfg. We hope to be able to take this drive along with an improved gatherer and shooter to off season events this year. And for all wondering, this is not just an ordinary 8 wheel. Any guesses are welcome.
#1:
__________________
Driving "Career":
2012 GKC: Quarterfinals w/ 6th seeded alliance | Wisconsin: Quarterfinals - 3rd seeded alliance captains
2013 GKC: Quarterfinals w/ 5th seeded alliance | North Star: Regional winners, 2nd seeded alliance captains
2013 CMP: Curie Semis w/ 2056 + 3990
  #2   Spotlight this post!  
Unread 05-05-2012, 10:22
CalTran's Avatar
CalTran CalTran is offline
Missouri S&T Senior
FRC #2410 (BV CAPS Metal Mustang Robotics)
Team Role: College Student
 
Join Date: Apr 2010
Rookie Year: 2010
Location: Overland Park, Kansas
Posts: 2,369
CalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond repute
Re: 967 Off Season Project

Quote:
Originally Posted by 404'd View Post
this is not just an ordinary 8 wheel. Any guesses are welcome.
I imagine that there is more than meets the eye with this chassis besides it being an 8 wheel, 4 center IFI w/ Blue Nitrile and 4 outer omnis? I don't see much for shifting, though I don't have much experience with custom shifters. (Only have experience with AM Supers)
I see a rectangular hole in the back that I'm going to say is for a battery. And given there are no openings in your chassis, I'd say that you're designing an over the bumper collection system.

Anyways, that CNC laser job looks amazing! Competing against the Iron Lions is always a pleasure, and I look forward to next year! Perhaps we can help you scout again? (Well, more you helping us! )
__________________
Team 2410 thinks KISSing is amazing! Keep It Super Safe!
  • "You know you've been in robotics too long when you start talking to your tools." "Well, you've been in robotics CLEARLY too long when they start talking back"
  • Theory is when you know everything but nothing works. Practice is when everything works but you don't know why. On our team, theory and practice comes together - nothing works and nobody knows why.
MMR 2410 Student (2010 - 2013) | MMR 2410 Mentor (2013 - Present)
FTC Game Announcer / EmCee (2014 - Present) | FRC EmCee (2015 - Present) | FRC Referee (2016)
Academic Student (Forever)
  #3   Spotlight this post!  
Unread 05-05-2012, 10:26
Andrew Lawrence
 
Posts: n/a
Re: 967 Off Season Project

Quote:
Originally Posted by CalTran View Post
4 center IFI w/ Blue Nitrile and 4 outer omnis?
Looks more like AM Performance wheels w/ Blue Nitrile.
  #4   Spotlight this post!  
Unread 05-05-2012, 10:35
CalTran's Avatar
CalTran CalTran is offline
Missouri S&T Senior
FRC #2410 (BV CAPS Metal Mustang Robotics)
Team Role: College Student
 
Join Date: Apr 2010
Rookie Year: 2010
Location: Overland Park, Kansas
Posts: 2,369
CalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond reputeCalTran has a reputation beyond repute
Re: 967 Off Season Project

Quote:
Originally Posted by SuperNerd256 View Post
Looks more like AM Performance wheels w/ Blue Nitrile.
Ah. My bad.
__________________
Team 2410 thinks KISSing is amazing! Keep It Super Safe!
  • "You know you've been in robotics too long when you start talking to your tools." "Well, you've been in robotics CLEARLY too long when they start talking back"
  • Theory is when you know everything but nothing works. Practice is when everything works but you don't know why. On our team, theory and practice comes together - nothing works and nobody knows why.
MMR 2410 Student (2010 - 2013) | MMR 2410 Mentor (2013 - Present)
FTC Game Announcer / EmCee (2014 - Present) | FRC EmCee (2015 - Present) | FRC Referee (2016)
Academic Student (Forever)
  #5   Spotlight this post!  
Unread 05-05-2012, 13:58
MichaelBick MichaelBick is offline
Registered User
FRC #1836 (MilkenKnights)
Team Role: Alumni
 
Join Date: Oct 2011
Rookie Year: 2010
Location: Los Angeles
Posts: 733
MichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant future
Re: 967 Off Season Project

It has drop down casters/omnis in the back. Though with that setup, it would seem as though the robot would be lifted onto the casters/omnis in the back and the front omni wheels. Which would mean you could very easily be pushed.
__________________
Team 1836 - The Milken Knights
2013 LA Regional Champions with 1717 and 973
2012 LA Regional Finalists with 294 and 973
To follow Team 1836 on Facebook, go to http://www.facebook.com/MilkenKnights
To go to our website, go to http://milkenknights.com/index.html
  #6   Spotlight this post!  
Unread 05-05-2012, 14:08
PAR_WIG1350's Avatar
PAR_WIG1350 PAR_WIG1350 is offline
Registered User
AKA: Alan Wells
FRC #1350 (Rambots)
Team Role: Alumni
 
Join Date: Dec 2009
Rookie Year: 2009
Location: Rhode Island
Posts: 1,188
PAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond reputePAR_WIG1350 has a reputation beyond repute
Re: 967 Off Season Project

The cutout in the belly pan could be for a balancing mechanism like a stinger.
__________________
  #7   Spotlight this post!  
Unread 05-05-2012, 14:15
MichaelBick MichaelBick is offline
Registered User
FRC #1836 (MilkenKnights)
Team Role: Alumni
 
Join Date: Oct 2011
Rookie Year: 2010
Location: Los Angeles
Posts: 733
MichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant futureMichaelBick has a brilliant future
Re: 967 Off Season Project

Quote:
Originally Posted by PAR_WIG1350 View Post
The cutout in the belly pan could be for a balancing mechanism like a stinger.
No, it is too big. Actually you can see a drop down caster/omni assembly on the wildstang iteration thread.

http://www.chiefdelphi.com/forums/sh...hreadid=105969
__________________
Team 1836 - The Milken Knights
2013 LA Regional Champions with 1717 and 973
2012 LA Regional Finalists with 294 and 973
To follow Team 1836 on Facebook, go to http://www.facebook.com/MilkenKnights
To go to our website, go to http://milkenknights.com/index.html
  #8   Spotlight this post!  
Unread 05-05-2012, 18:06
Akash Rastogi Akash Rastogi is offline
Jim Zondag is my Spirit Animal
FRC #2170 (Titanium Tomahawks)
Team Role: Mentor
 
Join Date: Feb 2007
Rookie Year: 2006
Location: Manchester, Connecticut
Posts: 7,003
Akash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond reputeAkash Rastogi has a reputation beyond repute
Re: 967 Off Season Project

This is some really solid sheetmetal work. Looks beautiful.

What is the drop on the center set of wheels? What reduction are you running in that gearbox and the overall reduction?

Looks great! I think you could simplify the frame rails and bit for easier assembly but other than that this is great.
__________________
My posts and opinions do not necessarily reflect those of my affiliated team.
['16-'xx]: Mentor FRC 2170 | ['11-'13]: Co-Founder/Mentor FRC 3929 | ['06-'10]: Student FRC 11 - MORT | ['08-'12]: Founder - EWCP (OG)
  #9   Spotlight this post!  
Unread 05-05-2012, 18:20
Andrew Zeller's Avatar
Andrew Zeller Andrew Zeller is offline
Mechanical Engineering at UA
FRC #1716 (Redbird Robotics)
Team Role: Mentor
 
Join Date: Jan 2011
Rookie Year: 2010
Location: Tuscaloosa, Alabama
Posts: 105
Andrew Zeller has a spectacular aura aboutAndrew Zeller has a spectacular aura aboutAndrew Zeller has a spectacular aura about
Re: 967 Off Season Project

Awesome drivetrain. What software are you using? What is the best way to model the cutout pattern and have it stop at a specified edge on the bellypan?
__________________
FIRST ROBOTICS TEAM 1716 Redbird Robotics
2012 Wisconsin Regional Judges Award
2012 Wisconsin Regional Quarterfinalists
http://www.frc1716.org/
  #10   Spotlight this post!  
Unread 05-05-2012, 18:31
Gray Adams's Avatar
Gray Adams Gray Adams is offline
Registered User
no team
 
Join Date: Dec 2011
Rookie Year: 2000
Location: none
Posts: 282
Gray Adams is a splendid one to beholdGray Adams is a splendid one to beholdGray Adams is a splendid one to beholdGray Adams is a splendid one to beholdGray Adams is a splendid one to beholdGray Adams is a splendid one to beholdGray Adams is a splendid one to behold
Re: 967 Off Season Project

Quote:
Originally Posted by boarder3512 View Post
Awesome drivetrain. What software are you using? What is the best way to model the cutout pattern and have it stop at a specified edge on the bellypan?
I'm not sure what they do, but it works pretty well to make an oversize diamond pattern and then just use an extrusion to make the border of the sheet. The same applies to the cutout or any electronics mounting you might add.
  #11   Spotlight this post!  
Unread 05-05-2012, 18:58
BrendanB BrendanB is offline
Registered User
AKA: Brendan Browne
FRC #1058 (PVC Pirates)
Team Role: Mentor
 
Join Date: Feb 2008
Rookie Year: 2003
Location: Londonderry, NH
Posts: 3,100
BrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond reputeBrendanB has a reputation beyond repute
Re: 967 Off Season Project

*whistles*

That is a really nice chassis! Can't wait to see the final!
__________________
1519 Mechanical M.A.Y.H.E.M. 2008 - 2010
3467 Windham Windup 2011 - 2015
1058 PVC Pirates 2016 - xxxx
  #12   Spotlight this post!  
Unread 05-05-2012, 19:11
Nemo's Avatar
Nemo Nemo is offline
Team 967 Mentor
AKA: Dan Niemitalo
FRC #0967 (Iron Lions)
Team Role: Coach
 
Join Date: Nov 2009
Rookie Year: 2009
Location: Iowa
Posts: 801
Nemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond repute
Re: 967 Off Season Project

Quote:
Originally Posted by Akash Rastogi View Post
This is some really solid sheetmetal work. Looks beautiful.

What is the drop on the center set of wheels? What reduction are you running in that gearbox and the overall reduction?

Looks great! I think you could simplify the frame rails and bit for easier assembly but other than that this is great.
Thanks! The gearbox is 50:12, and the chains are 32:16. The axles are all level, but the omni wheel radius is around 0.10" smaller than the performance wheels with nitrile tread.

Assembly wasn't too bad, but next time we'll give ourselves some breathing room in certain places to make it easier (reducing time spent grinding...). What would you simplify on the side rails?
  #13   Spotlight this post!  
Unread 05-05-2012, 19:30
Nemo's Avatar
Nemo Nemo is offline
Team 967 Mentor
AKA: Dan Niemitalo
FRC #0967 (Iron Lions)
Team Role: Coach
 
Join Date: Nov 2009
Rookie Year: 2009
Location: Iowa
Posts: 801
Nemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond reputeNemo has a reputation beyond repute
Re: 967 Off Season Project

Quote:
Originally Posted by boarder3512 View Post
Awesome drivetrain. What software are you using? What is the best way to model the cutout pattern and have it stop at a specified edge on the bellypan?
This is done in Inventor. Making the diamond pattern basically involves doing the math to figure out exactly how big the diamond needs to be in each direction, depending on the number of diamonds you want and the desired thickness of the material between the holes. I don't know exactly what our student did in this one, but I've just made a couple of diamonds in a sketch, patterned them all the way out in two directions, then cut them all at once. Gray Adams' suggestion sounds good, because it would save you from having to cut the diamonds on the edges in half.
  #14   Spotlight this post!  
Unread 05-05-2012, 21:56
AdamHeard's Avatar
AdamHeard AdamHeard is offline
Lead Mentor
FRC #0973 (Greybots)
Team Role: Mentor
 
Join Date: Oct 2004
Rookie Year: 2004
Location: Atascadero
Posts: 5,494
AdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond reputeAdamHeard has a reputation beyond repute
Send a message via AIM to AdamHeard
Re: 967 Off Season Project

While I disagree with a few of the detailed decisions in this, I can't question the quality or the work ethic that brought this to existence. It's this kind of detailed and quality work in the offseason that will bring your team to the top level.

I love the bellypan, in the future I would try to add material to the bellypan specifically for electronics; it forces a clean layout and lets you mount electronics with the minimal amount of weight.

I think switching to a 2-stage gearbox, then directly driving one of those wheels would clean up the assembly and increase reliability substantially.

The webb of the diamond pattern could be decreased for maximum weight efficiency, but probably isn't too heavy now.

What is the weight of the two outer "rails"? Seems like a lot of material in there that could be pocketed out, especially with the reinforcement bumpers provide.

Why Omni on the outside, you could easily do traction without sacrificing turning speed or ability.

Overall I like it though, it definitely looks robust and quality. Don't take my questions negatively, I just hold drive trains to a ridiculous standard.
  #15   Spotlight this post!  
Unread 06-05-2012, 00:00
topgun's Avatar
topgun topgun is offline
Registered User
FRC #2846 (FireBears)
Team Role: Mentor
 
Join Date: Oct 2008
Rookie Year: 2008
Location: Minnesota
Posts: 229
topgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant futuretopgun has a brilliant future
Re: 967 Off Season Project

Quote:
Originally Posted by AdamHeard View Post

I love the bellypan, in the future I would try to add material to the bellypan specifically for electronics; it forces a clean layout and lets you mount electronics with the minimal amount of weight.
What do you mean by this? Specific mounting holes for mounting jaguars, the pdb, etc.?
__________________
-T

Closed Thread


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 07:00.

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