Go to Post We excel at making our robots nice and colorful. - AlecMataloni [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 Rating: Thread Rating: 2 votes, 5.00 average. Display Modes
  #16   Spotlight this post!  
Unread 02-11-2015, 09:56
Andrew Schreiber Andrew Schreiber is offline
Joining the 900 Meme Team
FRC #0079
 
Join Date: Jan 2005
Rookie Year: 2000
Location: Misplaced Michigander
Posts: 4,074
Andrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond reputeAndrew Schreiber has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

40A 2 wire slip rings.
__________________




.
Reply With Quote
  #17   Spotlight this post!  
Unread 02-11-2015, 10:03
Libby K's Avatar
Libby K Libby K is offline
Always a MidKnight Inventor.
FRC #1923 (The MidKnight Inventors)
Team Role: Mentor
 
Join Date: Mar 2006
Rookie Year: 1992
Location: West Windsor, NJ
Posts: 1,584
Libby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond reputeLibby K has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by Lil' Lavery View Post
I think the only issues we've ever had with VersaPlanetaries have been related to misuse or improper assembly.
Same - I'm surprised to see so many comments about failures in here. We've had nothing but great experiences (with the ones we put together correctly... )
__________________
Libby Kamen
Team 1923: The MidKnight Inventors
2006-2009: Founder, Captain, Operator, Regional Champion.
2010-Always: Proud Alumni, Mentor & Drive Coach. 2015 Woodie Flowers Finalist Award.

-
229: Division By Zero / 4124: Integration by Parts
2010-2013: Clarkson University Mentor for FLL, FTC & FRC

-
FIRST Partner Associate, United Therapeutics
#TeamUnither | facebook, twitter & instagram | @unitherFIRST

-
questions? comments? concerns? | twitter: @libbyk | about.me/libbykamen
Reply With Quote
  #18   Spotlight this post!  
Unread 02-11-2015, 10:06
Munchskull's Avatar
Munchskull Munchskull is offline
CAD Designer/ Electrical Consaltant
AKA: Anthony Cardinali
FRC #0997 (Spartan Robotics)
Team Role: CAD
 
Join Date: Jan 2013
Rookie Year: 2013
Location: Corvallis, OR
Posts: 532
Munchskull is a splendid one to beholdMunchskull is a splendid one to beholdMunchskull is a splendid one to beholdMunchskull is a splendid one to beholdMunchskull is a splendid one to beholdMunchskull is a splendid one to beholdMunchskull is a splendid one to beholdMunchskull is a splendid one to behold
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by asid61 View Post
cheap encoders (please?)
I used to think that too. With a little research I found two types of encoders that are <$30. You can get CUI 10X-V encoders for ~$24 dollars on digikey. That is a quality incremental encoder but some time you need absolute value on things. While after doing a little research I discovered this ~$28 magnetic encoder, have not used it but it is on my list if the need for absolutel positioning arises.
__________________
“In theory, theory and practice are the same. In practice, they are not.” ― Anonymous
Anthony Cardinali
4th year of FRC
Class of 2017



Reply With Quote
  #19   Spotlight this post!  
Unread 02-11-2015, 10:09
Ryan Dognaux's Avatar
Ryan Dognaux Ryan Dognaux is offline
Back Home in Indiana
FRC #4329 (Lutheran Roboteers)
Team Role: Mentor
 
Join Date: Apr 2002
Rookie Year: 2001
Location: Indianapolis, IN
Posts: 2,675
Ryan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond reputeRyan Dognaux has a reputation beyond repute
Send a message via AIM to Ryan Dognaux
Re: New Products for 2016: Speculation, Wants

We have nothing but great things to say about the Versaplanetary gearbox line.

We only had one failure all season and it was completely our fault - we abused the gearbox well beyond what it should have stood up to while prototyping our elevator. Even with 4 totes slamming our elevator carriage to the ground the gearbox still stood up to the shock loads we were repeatedly putting on it. It also made us realize we needed a disc brake at the price of just putting a new gear stage into the gearbox - a very valuable and cheap lesson when time is a factor during build season.

Versaplanetary gearboxes & the versa chassis products have changed the way we design robots in a really good way.
__________________
Ryan Dognaux :: Last Name Pronounced 'Doane Yo'
Team 234 Alum: 2002 - 2005 :: Purdue FIRST Member: 2006 - 2009
Team 1646 Mentor: 2007 - 2009 :: Team 357 Mentor: 2009 - 2012
Team 4329 Mentor: Current
STL Off-Season Event: www.gatewayroboticschallenge.com
Reply With Quote
  #20   Spotlight this post!  
Unread 02-11-2015, 10:32
Aren_Hill's Avatar
Aren_Hill Aren_Hill is offline
Build Nifty Things
no team
Team Role: Mentor
 
Join Date: Feb 2005
Rookie Year: 2005
Location: Menlo Park CA
Posts: 1,218
Aren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by Oblarg View Post
I can second this, they're so loud that I'm always worried that something's wrong with them. On that note, I've seen far more failures of versaplanetaries than of any other stock FRC gearbox. They're a really nice idea, I just haven't had good luck with them.
If you have any issues with VersaPlanetaries or other VEXpro products please let me know, I'm happy to help out. (See email in signature)

-Aren
__________________
A guy who likes robots.
1625->3928->148->1296->971 oh dear
Reply With Quote
  #21   Spotlight this post!  
Unread 02-11-2015, 10:33
IndySam's Avatar
IndySam IndySam is offline
Registered User
FRC #0829 (Digital Goats)
Team Role: Mentor
 
Join Date: Nov 2005
Rookie Year: 2004
Location: Indy
Posts: 3,362
IndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond reputeIndySam has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

We have used lots of Versaplanetaries since their inception and have never had any noise or failures. We love those things.
__________________
"Champions are champions not because they do anything extraordinary but because they do the ordinary things better than anyone else." —Chuck Knoll


2015 Indianapolis District Winner
2014 Boilermaker Regional Industrial Design Award
2013 Smoky Mountain Regional Industrial Design Award
2012 Boilermaker Engineering Excellence Award
2010 Boilermaker Rockwell Innovation in Control Award.
2009 Buckeye J&J Gracious Professionalism Award
2009 Boilermaker J&J Gracious Professionalism Award
2008 Boilermaker J&J Gracious Professionalism Award
2007 St Louis Regional Winners
Reply With Quote
  #22   Spotlight this post!  
Unread 02-11-2015, 11:18
JesseK's Avatar
JesseK JesseK is offline
Expert Flybot Crasher
FRC #1885 (ILITE)
Team Role: Mentor
 
Join Date: Mar 2007
Rookie Year: 2005
Location: Reston, VA
Posts: 3,712
JesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond reputeJesseK has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

We have noise on Versaplanetaries when the pinion isn't seated/mounted correctly. The pinion attachment either rubs the motor plate or it rubs the opposite gear/plate. It really pays to pay close attention to the text in the instructions when assembling these things.

Before we apply power, we use a hex hub to reverse-drive the motor by hand. If there's any binding or chattering, we disassemble and reassemble. It should be smooth-running in both directions (caveat - we've only done 2-stage, up to 49:1).

As for 'wishes' (though it may be too late given supply chain timing)
- Grippy roller variations
- Anything to help with the mating of bumpers to frames with quick disconnects
Reply With Quote
  #23   Spotlight this post!  
Unread 02-11-2015, 11:27
jwfoss jwfoss is offline
Chasing Elegant Simplicity
AKA: Justin Foss
FRC #0558 (Elm City Robo Squad)
Team Role: Mentor
 
Join Date: Aug 2006
Rookie Year: 2003
Location: New Haven, CT
Posts: 592
jwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond reputejwfoss has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Hoping someone starts selling plugs for tubing with hex and/or the standard sprocket bolt pattern.
A COTS roller solution could be a game changer.
__________________
2003-2006 | FRC 0176 | Aces High - Student
2007-2010 | FRC 0229 | Division by Zero - Mentor in Training
2011-2013 | FRC 2168 | Aluminum Falcons - Mechanical Mentor
2013-20xx | FRC 0558 | Elm City Robo Squad - Mechanical Mentor
Reply With Quote
  #24   Spotlight this post!  
Unread 02-11-2015, 11:56
Sperkowsky's Avatar
Sperkowsky Sperkowsky is offline
Professional Multitasker
AKA: Samuel Perkowsky
FRC #2869 (Regal Eagles)
Team Role: Leadership
 
Join Date: Jan 2015
Rookie Year: 2014
Location: Bethpage, NY
Posts: 1,916
Sperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond reputeSperkowsky has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by jwfoss View Post
Hoping someone starts selling plugs for tubing with hex and/or the standard sprocket bolt pattern.
A COTS roller solution could be a game changer.
you mean like this http://www.competitionrobotparts.com...or-roller-kit/
Reply With Quote
  #25   Spotlight this post!  
Unread 02-11-2015, 11:59
Jay O'Donnell's Avatar
Jay O'Donnell Jay O'Donnell is offline
Division by Pirates
FRC #0229 (Division by Zero)
Team Role: Mentor
 
Join Date: Apr 2012
Rookie Year: 2012
Location: Potsdam, NY/Londonderry, NH
Posts: 1,348
Jay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond reputeJay O'Donnell has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by Sperkowsky View Post
I think he means intake rollers.
__________________
Student on Team 1058 (2012-2015)
Mentor on Team 229 (2016-Present)
Writer for Blue Alliance Blog
Reply With Quote
  #26   Spotlight this post!  
Unread 02-11-2015, 12:00
asid61's Avatar
asid61 asid61 is offline
Registered User
AKA: Anand Rajamani
FRC #0115 (MVRT)
Team Role: Mechanical
 
Join Date: Jan 2014
Rookie Year: 2013
Location: Cupertino, CA
Posts: 2,226
asid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond reputeasid61 has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by JesseK View Post
We have noise on Versaplanetaries when the pinion isn't seated/mounted correctly. The pinion attachment either rubs the motor plate or it rubs the opposite gear/plate. It really pays to pay close attention to the text in the instructions when assembling these things.

Before we apply power, we use a hex hub to reverse-drive the motor by hand. If there's any binding or chattering, we disassemble and reassemble. It should be smooth-running in both directions (caveat - we've only done 2-stage, up to 49:1).

As for 'wishes' (though it may be too late given supply chain timing)
- Grippy roller variations
- Anything to help with the mating of bumpers to frames with quick disconnects
I'll have to try and reassemble ours to see if the gear rubbing was the cause of the noise. Thanks!
Also, as far as grippy wheels go, urethane rollers would be amazing so we don't have to buy them in 12" sections and cut them down.
__________________
<Now accepting CAD requests and commissions>

Reply With Quote
  #27   Spotlight this post!  
Unread 02-11-2015, 12:11
KrazyCarl92's Avatar
KrazyCarl92 KrazyCarl92 is offline
Registered User
AKA: Carl Springli
FRC #0020 (The Rocketeers)(EWCP)
Team Role: Mentor
 
Join Date: Jan 2010
Rookie Year: 2010
Location: Clifton Park, NY
Posts: 522
KrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond reputeKrazyCarl92 has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

I am surprised by the complaints related to VersaPlanetaries. I would agree that they are noisy, but I've found them to be incredibly robust while providing a wealth of gearing options.

2013 and prior, Team 20 used Banebots Planetaries (P60s) or Andymark Gearmotors as a planetary solution. The gearmotors were really quite heavy and had limited available ratios. The Banebot Planetaries at the time had sintered gears. Over time after proper assembly, mounting, and loading the gears would still be pulverized into powder. The gearboxes would seize up and we would open them to find our gears were worn to shreds and the grease had metal powder suspended in it. In 2013 we even designed our collector subassembly to be quick change so we could swap out the whole thing in under 5 minutes. This was after a poor experience in 2012 where I probably spent 10 hours over the course of the season replacing BB P60s (poor design for maintenance also to blame).

I still haven't seen a single VersaPlanetary stop working with proper assembly and when mounted and loaded properly.

I do know that in 2014 when we selected Team 229 at the Tech Valley Regional their collector had not been working in their final qualification match. Their VersaPlanetary gearbox had seized up and stopped working, but I knew we had replacements in our pit, so we picked them anyway with the last pick of the draft. When we went to put the new gearbox and motor on their robot, I noted that the mounting of the gearbox was not rigid at all and we were able to work on a modification together that to my knowledge worked for the rest of the season. The sloppiness of their original mount led to strange shock loads in the gearbox due to oscillating tension on the sprocket driven by the gearbox. This highlights how important mounting and loading are the to gearbox functionality.
__________________
[2017-present] FRC 0020 - The Rocketeers
[2016] FRC 5811 - BONDS Robotics
[2010-2015] FRC 0020 - The Rocketeers
Reply With Quote
  #28   Spotlight this post!  
Unread 02-11-2015, 12:17
cadandcookies's Avatar
cadandcookies cadandcookies is online now
Director of Programs, GOFIRST
AKA: Nick Aarestad
FTC #9205 (The Iron Maidens)
Team Role: College Student
 
Join Date: Jan 2012
Rookie Year: 2009
Location: Minnesnowta
Posts: 1,558
cadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond reputecadandcookies has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by Lil' Lavery View Post
I think the only issues we've ever had with VersaPlanetaries have been related to misuse or improper assembly.
Same. This spring GOFIRST built a number of small robots using them as drive gearboxes (15 gearboxes total), and the only issues we had were traced to overgreasing them and a poor mounting job to the frame.
__________________

Never assume the motives of others are, to them, less noble than yours are to you. - John Perry Barlow
tumblr | twitter
'Snow Problem CAD Files: 2015 2016
MN FTC Field Manager, FTA, CSA, Emcee
FLL Maybe NXT Year (09-10) -> FRC 2220 (11-14) -> FTC 9205(14-?)/FRC 2667 (15-16)
VEXU UMN (2015-??)
Volunteer since 2011
2013 RCA Winner (North Star Regional) (2220)
2016 Connect Award Winner (North Super Regional and World Championship) (9205)
Reply With Quote
  #29   Spotlight this post!  
Unread 02-11-2015, 12:22
nuclearnerd's Avatar
nuclearnerd nuclearnerd is offline
Speaking for myself, not my team
AKA: Brendan Simons
FRC #5406 (Celt-X)
Team Role: Engineer
 
Join Date: Jan 2014
Rookie Year: 2014
Location: Hamilton, Ontario, Canada
Posts: 458
nuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant futurenuclearnerd has a brilliant future
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by jwfoss View Post
Hoping someone starts selling plugs for tubing with hex and/or the standard sprocket bolt pattern.
A COTS roller solution could be a game changer.
I said it in an earlier thread on the same topic. If someone were to make a hub that clamps or keys onto standard 1" tube, we could have a COTS solution for long shafts that won't twist 10 degrees under load.
Reply With Quote
  #30   Spotlight this post!  
Unread 02-11-2015, 12:24
Foster Foster is offline
Engineering Program Management
VRC #8081 (STEMRobotics)
Team Role: Mentor
 
Join Date: Jul 2007
Rookie Year: 2005
Location: Delaware
Posts: 1,393
Foster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond reputeFoster has a reputation beyond repute
Re: New Products for 2016: Speculation, Wants

Quote:
Originally Posted by Andrew Schreiber View Post
40A 2 wire slip rings.
If you Google "electrical slip ring wind turbine" you get a pretty good selection of choices. They are all for low speed(~250 RPM), I don't know what your application is. I also assumed that you were not trying to transfer any load though them.

The one I used is made by Moflon, three wires, 30Amp and cost me about $30. MW1330 is the model I have. As always your mileage will vary.

If you are after just doing control signals, Adafruit has some low voltage, low current ones. 2A / 6 wires ~$15 plus shipping.
__________________
Foster - VEX Delaware - 17 teams -- Chief Roboteer STEMRobotics.org
2010 - Mentor of the Year - VEX Clean Sweep World Championship
2006-2016, a decade of doing VEX, time really flies while having fun
Downingtown Area Robotics Web site and VEXMen Team Site come see what we can do for you.
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 20:47.

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