26-01-2011 08:33

548swimmer

Re: pic: 222 Teaser

Looks great! Are you sure the plastic will hold up under the torque? Also, it looks like the top gear doesn't quite line up, is this because of the camera agnle?

26-01-2011 09:18

Chris is me

Re: pic: 222 Teaser

I have a feeling it's a plastic prototype.

Not exactly certain how it works but hey, looks cool and apparently shifts!

26-01-2011 09:23

Brandon Holley

Re: pic: 222 Teaser

I'm guessing its another iteration of the famous 222 ball-lock trannys they've been pumping out for years. This is obviously a prototype as well.

-Brando

26-01-2011 09:34

MrForbes

Re: pic: 222 Teaser

the cutaway frame section is really neat looking.

Nice work!

26-01-2011 10:48

MagiChau

Re: pic: 222 Teaser

Looks like a cool design for a 2 speed transmission.

26-01-2011 10:51

Sunshine

Re: pic: 222 Teaser

Don't ya' just love 3D printers and what they can do? Great Job!

26-01-2011 15:42

Nick Lawrence

Re: pic: 222 Teaser

Nice work guys. Looking forward to seeing the real deal at Pittsburgh.

-Nick

26-01-2011 21:39

team222badbrad

Re: pic: 222 Teaser

Thanks for all the positive remarks.

This will not be used in competition, but it does actually shift. The problem is part strength and plastic spinning on plastic creates a melted pile of plastic.

Nick 222 will only be attending Boston and possibly Championships.

We have been making these transmissions since we introduced our three speed in 2004.

This year we are experimenting with springs outside the transmission rather than having them directly on the shifting plunger shaft.

squirrel you are correct that is a cutaway of a 3x5" tube.

Enjoy this video:

http://www.youtube.com/watch?v=rj6naPPiQOw

27-01-2011 01:16

s_forbes

Re: pic: 222 Teaser

Super super awesome! This is definitely one of the best innovations I've seen from a FIRST team... I loved it when I first saw the concept several years ago, and I love it even more seeing the new arrangement you've come up with.

Will you be using a metal version of this gearbox on your robot this year? If you make it there, I'll definitely be visiting your pit at champs to check this thing out.

27-01-2011 01:27

Akash Rastogi

Re: pic: 222 Teaser

Yet another sick gearbox from 222, very awesome. What's not awesome- you are not going to Philly this year. </3

27-01-2011 10:22

Brandon Holley

Re: pic: 222 Teaser

Cause they're coming to Boston instead. Boom.

-Brando

04-02-2011 03:53

team222badbrad

Re: pic: 222 Teaser

Speaking of BOOM!

http://www.facebook.com/pages/Tunkha...339&com ments

04-02-2011 09:13

Nick Lawrence

Re: pic: 222 Teaser

*disappointed face*

-Nick

04-02-2011 09:15

thefro526

Re: pic: 222 Teaser

What are the specs on the 8WD in the video?

It looks like it handles really well.

04-02-2011 13:35

team222badbrad

Re: pic: 222 Teaser

What specs would you like to know that are not on the video?

04-02-2011 13:39

thefro526

Re: pic: 222 Teaser

Wheel base, offset, wheel size, floor speed?

I'm just asking because the point of rotation looked a bit rear biased where most 8WD's I've seen seem to rotate around the center.

04-02-2011 13:49

team222badbrad

Re: pic: 222 Teaser

Wheelbase is approximately 25".

Zero offset.

6" AndyMark Omni and Plaction wheels.

14 FPS and 5FPS

All the weight is in the back.