14-01-2011 10:48

MrForbes

Re: pic: Team 842 Drive Train

are those blue things chains?

Congrats on having a cad model of your chassis before building it! Looks great

14-01-2011 12:19

Leav

Re: pic: Team 842 Drive Train

This looks like the composite material I-Beam again... am I right?

14-01-2011 12:30

Chris is me

Re: pic: Team 842 Drive Train

http://images1.memegenerator.net/Ima...orName=yo-dawg

In all seriousness, looks like a solid drivetrain for this year. Fiberglass is strong stuff! I especially like the inward facing flanges on the C-channel - you should be able to mount an electronics board there.

14-01-2011 23:33

meebee

Re: pic: Team 842 Drive Train

I'm not quite sure I understand the chain wrap.
Also, what's the gearing on the sprockets?
Looks like a solid drive train.

15-01-2011 02:11

falconmaster

Re: pic: Team 842 Drive Train

The material is pultruded fiberglass, 3/16" thick. It will probably have lightening holes. John is new to autodesk and is still learning, He will get the chain right eventually...

15-01-2011 09:42

MrForbes

Re: pic: Team 842 Drive Train

must....resist....hole saw!

16-01-2011 22:52

Justin Montois

Re: pic: Team 842 Drive Train

I'm not completely familiar with Pultruded Fiberglass but we used fiberglass composite hockey sticks in 2007 and 2008 and putting any kind of hole or slot in it can be tricky. The fibers tend to get caught in whatever your using to cut with and the fibers can rip out clear down the length of the material.

Just a word of caution. I can't wait to check out a fiberglass frame in St. Louis!

17-01-2011 00:23

MrForbes

Re: pic: Team 842 Drive Train

The Falcons have been using a hole saw to make pultruded fiberglass lighter for years, they know all about how to do it. The material does not separate like the hockey sticks you describe.

I just think it would make the robot look more "designed" if they didn't need to saw a bunch of holes in it.....

17-01-2011 00:34

Justin Montois

Re: pic: Team 842 Drive Train

Quote:

Originally Posted by squirrel The Falcons have been using a hole saw to make pultruded fiberglass lighter for years, they know all about how to do it. The material does not separate like the hockey sticks you describe. I just think it would make the robot look more "designed" if they didn't need to saw a bunch of holes in it.....

17-01-2011 00:47

Chris is me

Re: pic: Team 842 Drive Train

Quote:

Originally Posted by squirrel I just think it would make the robot look more "designed" if they didn't need to saw a bunch of holes in it.....

17-01-2011 01:18

EagleEngineer

Re: pic: Team 842 Drive Train

Why 6in wedgetop wheels? why not roughtop?

17-01-2011 09:54

MrForbes

Re: pic: Team 842 Drive Train

Because it doesn't wear out so fast? and it provides just the right amount of traction, allowing easy turning and good pushing power?

But since it's just a cad model, the tread could be decided later, or different treads could be tried. We have used different tread on different wheels on the same robot most of the time.

17-01-2011 10:13

falconmaster

Re: pic: Team 842 Drive Train

Quote:

Originally Posted by 340x4xLife That's what I figured but it might help some team searching for "fiberglass" at some point.

17-01-2011 10:14

falconmaster

Re: pic: Team 842 Drive Train

Quote:

Originally Posted by EagleEngineer Why 6in wedgetop wheels? why not roughtop?