Re: pic: Custom drivetrain
 

That robot breaching defenses might land on that cantilevered wheel, so the situation might be worse than what a normal drivetrain shaft would experience. Depends on if you're planning on going through tall defenses like the rock wall.

Re: pic: Custom drivetrain
 

Excuse me for getting of the topic..
Was the orange box printed? and how?

Re: pic: Custom drivetrain
 

Nope, it was definitely not printed. It was probably just a container they had lying around

Re: pic: Custom drivetrain
 

I'm guessing the orange box is a printer or typewriter cover.

I'm with Kevin on the traction. I had thought at first those were 2008 KoP wheels, but I see they're metal. You probably want to put some sort of rubbery coating like truck bed liner on those.

Unless I'm missing the scale (they look like 8" wheels) or the robot is too wide to get very far up the batter, scrub forces are going to be horrendous.

Re: pic: Custom drivetrain
 

I have serious doubts that this setup can actually move. Like literally, whether it will be able to translate motor power into forward motion.

I really, really hope you've tested this. Your interface between tread and pulley relying solely on friction (and not even having a V-belt interface or anything) is really, really bad as far as treads go. The suggestion to coat the pulleys in something with more friction honestly probably isn't even going to do the trick.

The moment someone T-bones you I don't see how your treads aren't immediately going to derail.

Not trying to be a jerk, just hoping you've already answered these questions so you don't show up to competition and have a season ending "OH SH**" moment.

Re: pic: Custom drivetrain
 

The good news is if this doesn't work out, you're using the AndyMark KOP frame and can make a 6WD pretty quickly... But I'd agree with everyone else here. Run this through its paces at full weight on carpet.

Re: pic: Custom drivetrain
 

Tippy

Re: pic: Custom drivetrain
 

Just curious, what is the pneumatic cylinder for? Also, it might be a good idea to put your compressor in your robot.

Re: pic: Custom drivetrain
 

I was the coach of my team in 2012 when we proudly posted our robot, and I remember the feeling when people started saying "what about the bumpers?". Fortunately for you, you have a week and a half more than we did to solve the problem. Also take seriously the advice about your tank tread design.

Re: pic: Custom drivetrain
 

Brilliant. Good luck with it.

Re: pic: Custom drivetrain
 

We do have a V-belt and the pulleys with the proper adjustment. Actually we obtained the belts and the pulleys out of an air-conditioning device. And we have the proper tensors also. IT has been working great so far. Friction with carpet is the only thing that we have not tested but we are looking forward to test it on carpet today.
Also, we will add our bumpers to show it to you.

We know you are not trying to be rude we understand your point. This is Gracious Professionalism. Thank you for that!!!

http://imgur.com/LyEvxeX

http://imgur.com/FSPYEwj

Re: pic: Custom drivetrain
 

Ahhh, nice.

Re: pic: Custom drivetrain
 

We are using planetary gearbox, and there is no reduction

Re: pic: Custom drivetrain
 

What is the ratio in the gearbox (and, also, from the gearbox to the driving point of the robot--this one is often by chain or belt)?

Re: pic: Custom drivetrain
 

Wait hang on a minute, so is the planetary gearbox reducing the output speed of the motor?

I sure hope so, otherwise you will have many many problems