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View Full Version : pic: How our shift happens...


Chuck Glick
11-09-2007, 22:53
[cdm-description=photo]29026[/cdm-description]

Akash Rastogi
11-09-2007, 22:54
That's pretty sick. Nice job. "ludicrous speed" lmao

AdamHeard
11-09-2007, 22:55
I like! I imagine Vex become very very competitive this season.

moojoe
11-09-2007, 23:07
Thats awsome Chuck, good job 1712.

Jeff K.
11-09-2007, 23:14
Nice! :D
Looks pretty slick.
It's a shame FIRST is going away from vex..

Greg Needel
12-09-2007, 00:11
I think I let teams use too many motors:ahh:


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

Lil' Lavery
12-09-2007, 03:45
How long does it take to shift?

Chuck Glick
12-09-2007, 06:50
How long does it take to shift?

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.

Lil' Lavery
12-09-2007, 07:22
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.

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

Qbranch
12-09-2007, 07:26
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

Chuck Glick
12-09-2007, 08:49
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

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...:D

-Chuck

Chuck Glick
12-09-2007, 08:50
I assume that's slightly exaggerated, and it doesn't actually engage both gears at the same time?

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.

Nuttyman54
12-09-2007, 10:46
On a side note, brownie points if anyone can get the sand-crawler reference...:D

-Chuck

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

Alex Cormier
12-09-2007, 10:56
illegal.

cbale2000
12-09-2007, 11:42
illegal.

Care to elaborate on that? :confused:

Alex Cormier
12-09-2007, 11:56
Care to elaborate on that? :confused:

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. :p

Chuck Glick
12-09-2007, 12:47
I'm assuming you're referring to the incredibly slow Jawa sand-crawlers from Star Wars?

Indeed!

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

joshsmithers
12-09-2007, 14:05
Favorited! It's a beauty. quite compact. Curiosity: how long have you been working on this project?

Chuck Glick
12-09-2007, 14:28
Favorited! It's a beauty. quite compact. Curiosity: how long have you been working on this project?

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.

Tottanka
13-09-2007, 03:42
Any chance for a video?

Chuck Glick
13-09-2007, 08:43
Any chance for a video?

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

Alex Cormier
13-09-2007, 09:09
how aboot the rest of your bot?

Chuck Glick
13-09-2007, 09:23
how aboot the rest of your bot?

Thats the top secret part...lol

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

Alex Cormier
13-09-2007, 09:32
Thats the top secret part...lol

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

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.

Chuck Glick
13-09-2007, 10:50
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.

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