View Single Post
  #4   Spotlight this post!  
Unread 09-11-2015, 07:39
Chris is me's Avatar
Chris is me Chris is me is offline
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: 7,601
Chris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond reputeChris is me has a reputation beyond repute
Send a message via AIM to Chris is me
Re: pic: ABS-110, lightweight 2-speed PTO gearbox

From the title at first I thought this was an ABS gearbox and I was concerned. Looks good though! Generic comment about supporting your CIMs marginally better goes here.

Quote:
Originally Posted by KohKohPuffs View Post
Because this is a 3-position piston, does that mean that when the PTO is engaged, the robot won't be able to move around?
If a PTO left the drivetrain engaged, you would have no choice but to be driving your mechanism and the drivetrain at the same time. This is generally undesirable. Imagine trying to hang on a bar you are forced to drive away from, for example. The tradeoff of a PTO is that you can't use your drivetrain while it's engaged (plus the design hurdles).

Quote:
Also, what is the PTO capable of doing? I'm not sure if a 5:1 ratio might be enough to, say lift the robot's weight off the ground.
Nothing about a PTO requires the entire gear reduction to take place in the same gearbox as the drivetrain. Rarely is this the case.
__________________
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)
Reply With Quote