14-01-2014, 12:59
|
 |
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: 7,675
|
|
|
Re: Applying the JVN calculator using multiple motors and Mecanum
Quote:
Originally Posted by Nemo
One can put, for example, an 11 tooth pinion on the Mini-CIM and a 12 tooth on the CIM to even out the speeds a bit. Then you have to adjust for that in the math before you combine them. If you're saying the pinion gear is a 12 tooth in your gear ratio math, Multiply the Mini-CIM's stall torque by 12/11 and its free speed by 11/12 before combining them with the CIM stall torque and free speed.
|
From my experience, the motors actually seem to run a bit better with the same pinion on each motor. Matching the free speeds is less essential than common wisdom would have you believe - at operating speeds / torques the motors match quite well with the same gear ratio.
__________________
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 Minnesota 10,000 Lakes Regional Winners (with 2826, 2470)
2791 Build Season Photo Gallery - Look here for mechanism photos My Robotics Blog (Updated April 11 2014)
|