View Single Post
  #49   Spotlight this post!  
Unread 11-01-2017, 21:53
ImMoMo's Avatar
ImMoMo ImMoMo is offline
Registered User
AKA: Mo
FRC #2559 (Normality Zero)
Team Role: College Student
 
Join Date: May 2015
Rookie Year: 2014
Location: Harrisburg, PA
Posts: 63
ImMoMo is an unknown quantity at this point
Re: Mecanum vs. Tank Drive?

Quote:
Originally Posted by Caleb Sykes View Post
20fps is pretty fast, unless you have a shifter, consider choosing a slower top speed in order to get higher acceleration.
I agree, we've ordered two gearing options.. 15 ft/s and 20 ft/s... I don't think we'll be seeing 20 ft/s being super useful..

I do have a question, we're using a single reduction clamp gearbox overall 3.8:1 ratio, and the torque load seems to be about 2.8... while each CIM has a stall torque of 2.22--- I believe this is an issue... but also I'm not super familiar with stall torque... is it correlated to the torque load?

Quote:
Originally Posted by Electronica1 View Post
If you can't do swerve, octocanum, nonadrive or butterfly drive, then you should stick with skid steer and focus on compensating for the less maneuverability.
For the most part I agree with you.

One of the discussions we had while choosing our d-train was in regards to the precision required to place the gear.

I believe that butterfly or octanum would be ideal for this game, and it's relatively simple w/ COTS from VEX or very simple machining with a mill.

One of the counterpoints our students presented for defense was that, even if you have a tank drive and you're trying to place a gear, an opposing bot can knock you off of alignment as well. I think their reasoning to use mecanum wheels was to more easily avoid robots, and quickly align.
Reply With Quote