Thread: Mecanum power draw issue when weighted down
View Single Post
  #5   Spotlight this post!  
Unread 29-01-2014, 08:18
pfreivald's Avatar
pfreivald pfreivald is offline
Registered User
AKA: Patrick Freivald
FRC #1551 (The Grapes of Wrath)
Team Role: Mentor
  
Join Date: Jan 2007
Rookie Year: 2001
Location: Naples, NY
Posts: 2,296
pfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond reputepfreivald has a reputation beyond repute
Re: Mecanum power draw issue when weighted down
We've run mecanum on 9:1, 10.71:1, 12:1, and 12.75:1 reductions. Even at 9:1, the power draw started to get high enough to make us nervous (please don't ask for specifics--this was five years ago and I don't have that kind of memory!)

Our octocanum last year was 10.71:1 on the mecanum wheels and that worked exactly as well as we wanted it to.

So as others said: Gear it down. My suggestion would be a 2:1 (or slightly higher) reduction from what you've already got--either by buying new gearboxes (which will be expensive and probably require a redesign, if they're even in stock) or using belts/chain (which will be much cheaper and definitely require a redesign).
__________________
Patrick Freivald -- Mentor
Team 1551
"The Grapes of Wrath"
Bausch & Lomb, PTC Corporation, and Naples High School

I write books, too!