11-09-2007 22:54

Akash Rastogi

Re: pic: How our shift happens...

That's pretty sick. Nice job. "ludicrous speed" lmao

11-09-2007 22:55

AdamHeard

Re: pic: How our shift happens...

I like! I imagine Vex become very very competitive this season.

11-09-2007 23:07

moojoe

Re: pic: How our shift happens...

Thats awsome Chuck, good job 1712.

11-09-2007 23:14

Jeff K.

Re: pic: How our shift happens...

Nice!
Looks pretty slick.
It's a shame FIRST is going away from vex..

12-09-2007 00:11

Greg Needel

Re: pic: How our shift happens...

I think I let teams use too many motors


also I feel that I just found the drive for my robot at the rachacha j/k

12-09-2007 03:45

Lil' Lavery

Re: pic: How our shift happens...

How long does it take to shift?

12-09-2007 06:50

Chuck Glick

Re: pic: How our shift happens...

I don't have an exact time, but not that long I would say... The spacing between gears is roughly 1/32", so once it's out of one gear, it's already engaging the other.

12-09-2007 07:22

Lil' Lavery

Re: pic: How our shift happens...

I assume that's slightly exaggerated, and it doesn't actually engage both gears at the same time?

12-09-2007 07:26

Qbranch

Re: pic: How our shift happens...

Wow... nice shifter... is that a airplne servo up top or a motor? Seems to be a lot of gear reduction for the gear-reduction-changer.

Wow... Ludicrous Speed... I feel like watching Spaceballs now...

-q

12-09-2007 08:49

Chuck Glick

Re: pic: How our shift happens...

It's another motor on top. The reasoning for the extra reduction is because just driving the worm gear off the motor wasn't a fast enough shift for us, but with the 1:3 reduction before the worm reduction our shift is much nicer.


On a side note, brownie points if anyone can get the sand-crawler reference...

-Chuck

12-09-2007 08:50

Chuck Glick

Re: pic: How our shift happens...

Let me see if I can get a better pic of the spacing for you... they both don't engage at the same time, but the time from one gear to the next is very short.

12-09-2007 10:46

Nuttyman54

Re: pic: How our shift happens...

I'm assuming you're referring to the incredibly slow Jawa sand-crawlers from Star Wars?

12-09-2007 10:56

Alex Cormier

Re: pic: How our shift happens...

illegal.

12-09-2007 11:42

cbale2000

Re: pic: How our shift happens...

Care to elaborate on that?

12-09-2007 11:56

Alex Cormier

Re: pic: How our shift happens...

haha, i would have thought that chuck would have said that first.

it's better then my 2 speed trans design. so therefore it's illegal.

12-09-2007 12:47

Chuck Glick

Re: pic: How our shift happens...

Indeed!

Unfortunately, we don't have droid transport on the inside!

12-09-2007 14:05

joshsmithers

Re: pic: How our shift happens...

Favorited! It's a beauty. quite compact. Curiosity: how long have you been working on this project?

12-09-2007 14:28

Chuck Glick

Re: pic: How our shift happens...

Honestly, from start to finish, about 5 days... came up with the idea, thought of ways to accomplish it, designed it...those took about 4 days, then built in one day. Works better than we thought.

13-09-2007 03:42

Tottanka

Re: pic: How our shift happens...

Any chance for a video?

13-09-2007 08:43

Chuck Glick

Re: pic: How our shift happens...

I'm working on the video right now. Hopefully it will be posted by the end of the week.

13-09-2007 09:09

Alex Cormier

Re: pic: How our shift happens...

how aboot the rest of your bot?

13-09-2007 09:23

Chuck Glick

Re: pic: How our shift happens...

Thats the top secret part...lol

I'll out some teasers of that out for ya Alex.

13-09-2007 09:32

Alex Cormier

Re: pic: How our shift happens...

sounds good. i realized, i need a new WAI. So once i win the vex comp, i'll take a new one with the winning robot.

13-09-2007 10:50

Chuck Glick

Re: pic: How our shift happens...

How nice of you to offer to take a picture with my robot!