I will need at least one night to chew over this... Yup, looks like I will need the luck as well. I will figure it out sometime though.

Ok, here is a few thoughts that got me started...

First of all, assuming these are gear reductions, all the gear ratios got to slow down the speed of the motors instead of speeding them up. Looking at the specs of the motors, I think it make sense that this gear box reduce the ratio so the motors will output more torque. So, the first gear in the stage are the small ones at the bottom, and the 2 little shafts sticking out are attached to the motors instead of outputing motor power.

Then the shaft on the next stage get 1 reduction, and depending if the gear is keyed, it can be a output shaft or not. If not, then its just a support for the gear box, where the whole thing just hang on top of that bar, and the gears spin freely. but looking at the 1st picture: http://www.chiefdelphi.com/forums/pi...&quiet=verbose , there is a bearing for that shaft, meaning it actually spin instead of stationary. So that's the first output shaft right there, just really long.

Then keep going down the reductions, the small gears in the 2nd shaft is the drive gear for the top shaft #3. In the 2nd picture, I can see that the big gear on #3 is supposed to engage to it, so that means the pneumatics can at least slide the gears on #3 to mesh to the smaller gears on #2 on either position. Looking at the length of the piston on #3, I have to assume that the stroke length is more than that little gap that allow the gears on #3 to move, so the pneumaticc piston actually pops out on #3 toward the right. So that's the 2nd output shaft: the pneumatic piston that spin and extend and retract.

Then the 4th shaft on top is the final stage of the gears, and its supposed to be engaged to the #3's gears usually, looking at picture #2. http://www.chiefdelphi.com/forums/pi...&quiet=verbose

Same with output shaft 2, it is a pneumatic piston that pops out toward the right, and spin. Looking at the space inside that box, it looks like the gears on #4 doesn't touch gears on #2, and is stationary. The only way to engage them is to slide the gears on #3 to mesh with the gears on #4.


So, this probably isn't a gear box for the drive train. You can put 2 motors on it, but it won't output different speed on each side. All it's capability is spin the really long output shaft #1, and extend the pneumatic pistons while getting them to spin at the same time. The long output shaft spin the fastest, then the piston on #3 the second, and then the piston on #4 the slowest.

Anyway, that's all I can think of about this gear box. Without seeing what it outputs to, there's no telling what evil task it can do for your robot :P.

Ken:
This is our main drive transmison.

Drawing Board
 

Ken,
ITs all Scrap, best this trans would run was 3.5 sec
(it used just the two drill motors)
repeat was good (with in +/- 1.5")
new trans- 4 motors, and many long hours
See Ya
Geo.

Good luck with the robot. Hope to see a picture of the whole thing soon.

Oh yeah, by the way, I wouldn't mind getting a preview of the bot without the beautiful yellow paint all over it. Let me know if such thing can be arranged :P. Less than 2 weeks left, that means you guys have only a few days to finish it if you want a week of practice...

Sorry Ken, too late, its yellow, blue, & white as I wright
Lots of assembly pics, will bring to LA
Geo.
1 gear box, two days, no prob. no sleep, but on prob!

Ken,

I will post a couple on the gallery later tonight. I think I have some that will be interesting.

Shawn

I have put up some new pictures. I will have more in a day or two...including the NEW gear box

Looking good Shawn! I already see the red bars that lower onto the ground and lift the robot up, acting like a brake or some sort unless there's more attached on them. I bet its for the HDPE surface! Building a king of the hill robot huh? ;)

Pretty cool chain tensioner for the wheels. :)

The most interesting part is the 5th wheel... The pneumatic connected to it seems to be really really long to lower the wheels onto the ground... But even more intrestesting is the way the 5th wheel and 6th wheel (I assumed there will be one) are at an angle with the frame.

I also see some pivots on the side of your bot... For some sort of wings I suppose... ;P You guys are going to have a really huge robot!

Just a couple more things missing, like something that will mount to the plates on the frame opposite of the 5th wheel, as well as the bars pointing upward on each of the corner on the 5th wheel's side.

Hmm... Now this is just a guess of mine, but maybe you guys will be climbing over the side bars with the red bars and the 5th and 6th wheel? Well, that's just a wild guess...

Got to love the colors on your bot.

And to the topic, use the img tag. Makes it easier on all of us

you are right about some of it but they are not for the hdpe.

anyone else have a guess?

shawn

hey shawn!
 

maybe those arm are to put down at the end of the match pushing into the wiremech of the ramp on both sides while your robot is on the HDPE.

oh plus there are the wings that attach and drop down to hit the boxes in the begining.

i hope you made the hudge sturcture on your bot removable so in some matches you can go under the bar

Hey Dima!!

Niiiice Dima. Good guess.

Nope. It is on and it is there to stay. We won't be going under the bar.

Wrong!
The frame is removable, We can go under the bar.

I know George. But will we be going under the bar?