pic: A little more standard
 

Re: pic: A little more standard
 

I like your design.
However, a few questions;

How much does the entire robot base as pictured weigh?
How much does each wheel module with motor weigh?

keep up the good work

Re: pic: A little more standard
 

thanks, the entire robot weighs 52 pounds with arm and modules, however, this does not include elctronics and chains which I bet adds to at least 20 pounds and could be more, so i think it would weigh between 70-90 pounds.

Each module with motor is 5.05 lbs.

thanks

Re: pic: A little more standard
 

I'm having a hard time seeing what the benefits are with this design, all I can tell and assume is your going to have an issue with keeping those gearboxes safe. I also can tell that if you are rotating your wheels those gearboxes are going to rotate outside of the robot too, and thats just asking for trouble.

If I was designing this, I would mount 2 andymark or a custom shifter (or not) gearbox vertically inside the robot, and then run chains to each corner. Each module would have a shaft that ran down the tube, and mated bevel gears to the wheel shaft, then have just the wheels exposed

Other than that, the chassis and arm design looks good!

Re: pic: A little more standard
 

looks great,

the gearboxes look a little wobbly to me. maybe they need better support?
and better protection too?

but on the whole, very nice.

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I love the design, but I still don't know if the floor to robot strength is going to be enough..... You have to think about the possibilities of.... Is that going to be strong enough to have something that weighs around 130 hitting you consecutive times, and is anything going to break. I do like the swivel steer ideas, but I am more of a person who builds my robots like a tank. That way, it is durable, easy to fix, and I don’t have to worry about it after every round. Other then that great design.

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Without speaking about this design, particularly, I think it's worth mentioning that plenty of teams have had many, many successful seasons without building robots "like tanks." There's a thing or two to be said about graceful design and engineering and intelligently discerning which parts, assemblies and systems need to be more or less robust than others.

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While this is true, that "intelligent decerning" tends to turn into "it's not fair that you play defense that hard".

I don't want to turn this into a "tanks vs miracle machine" debate. I just want to point out that you have to understand the strengths and weaknesses (yes they all have weaknesses) of your robot, and prepare to deal with those.

//back on topic

I'd love to see that drivetrain in action.