|
Re: pic: Experimental Octocanum/Butterfly Design
Quote:
Originally Posted by AdamHeard
Why have the ball differential at all?
I can't see a mode where you'd ever have the left side not all at the same speed (as you appear to drop front/rear modules at the same time).
That differential adds complexity, and is actually really difficult to tune properly.
A few of my rc race cars run ball diffs and it's very much a feelings game.
|
I think the intent of the ball differential is to leave the drive train open to being converted to an octocanum (decacanum?) drive rather than butterfly. To strafe, the front and back wheels would need to run opposite each other, which would create a conflict between the chains running to the center wheel without it.
I like the concept! Looks like a cleaner version of this. I'd love to hear from any 1322 members about their experience with this style of drive and the ball differential.
One alternative if the ball differential doesn't work out might be to go with 6 CIMs, 4 on the back and 2 on the front, and only power the middle wheel off the 4 CIM side.
Also, 3/8" drop sounds like rather a lot.
__________________
FIRST is not about doing what you can with what you know. It is about doing what you thought impossible, with what you were inspired to become.
2007-2010: Student, FRC 1687, Highlander Robotics
2012-2014: Technical Mentor, FRC 1687, Highlander Robotics
2015-2016: Lead Mentor, FRC 5400, Team WARP
2016-???: Volunteer and freelance mentor-for-hire
Last edited by Joe G. : 31-07-2014 at 13:18.
|