05-02-2005 19:05

Kyle

Re: pic: Wheels and gearing

Wow that looks really really cool, looks like 25 has done it again.

05-02-2005 19:30

Arefin Bari

Re: pic: Wheels and gearing

What I like about team 25 is, they are using same (almost) chassis again. They perfect their chassis each year, and each year I get more curious to see their robot dominate at the competition. If you guys can I would like to know, how do you guys using this with what I see in the picture on this thread.

-Arefin.

05-02-2005 19:34

Wayne C.

Re: pic: Wheels and gearing

Look at the other picture Arefin- the hole the module is entering is the hole you see in the wheels picture in the plate near the end. The gears intermesh.

Actually- the chassi design is similar but this is the first year we are using the extruded aluminum product. We want to see whether it will survive the banging we tend to give it.

WC

05-02-2005 19:38

Max Lobovsky

Re: pic: Wheels and gearing

Why did you choose an extrusion this year? Your chassis seemed succesful last year and it does not look like you guys are short on the resources it takes for a custom cut chassis.

05-02-2005 19:42

Bharat Nain

Re: pic: Wheels and gearing

Every year we try to make our chasis as simple as possible.

05-02-2005 19:42

Wayne C.

Re: pic: Wheels and gearing

Actually we try new things each year and we ARE a bit short on shop power this year. We saw 1089 successfully use the material last year and we thought it would be something to try out. Personally I like the tubular aluminum with nylon connectors we used in 2002 best but it wasn't my call. Lets face it- any kids with a hack saw can cut and connect the extruded stuff.

WC

05-02-2005 19:45

Max Lobovsky

Re: pic: Wheels and gearing

I like how you isolated the precision components (side plates for gears) from the less precision stuff (the main structure). I thought it was kind of a bad idea how your gearbox was esstentially the side of your robot last year (at least thats what I remember.)

05-02-2005 19:47

tiffany34990

Re: pic: Wheels and gearing

looking really good.. keep up with the good work in perfecting a component, that's always fun to do and it's a real accomplishment. good job!! i hope everything else works out great too..just be careful who you let use a hack saw...some are better than others as i've learned.

05-02-2005 22:23

Bharat Nain

Re: pic: Wheels and gearing

We had a similar setup last year. Very similar, just different gear ratios and no extruded aluminum.

05-02-2005 23:12

Kyle

Re: pic: Wheels and gearing

I agree on that one to, 25 has been a great bot when it comes to pushing and forcing. I love to watch them be able to handle them selves on the field. except for when they are handling them selves against my team.
I cant wait to see you guys in action again this year, its always fun to be around 25 and there evil machines,
is it going to be another evil machine name? i was just wondering

05-02-2005 23:21

Bharat Nain

Re: pic: Wheels and gearing

haha.. We are extremely sorry for PARC. I guess a rookie drive team with such a powerful bot is not a good combination. We did learn as the season went on, ofcourse with those mistakes.

Another evil machine name - no. I think we'll leave this new bot upto you guys to name once you see it.

05-02-2005 23:26

Max Lobovsky

Re: pic: Wheels and gearing

So when do we get to see whats on top? We all know your drivetrain is gonna have the awesomeness it has always had, but your arms are the interesting part. Like maybe that enormous ~20 foot arm you had a few years ago....

05-02-2005 23:58

Wayne C.

Re: pic: Wheels and gearing

here's another teaser then..... but it is far from the monster it will be by next week....

06-02-2005 00:03

sanddrag

Re: pic: Wheels and gearing

Looks good. Is torsional stress a concern at all with so many close holes? Also, how much does that arm weigh (and what does this weight include).

06-02-2005 00:09

Wayne C.

Re: pic: Wheels and gearing

it will not twist- we've done these before. And the holes are an art.

the whole arm weight is 10 lbs without motors. We are looking at 20-30 lbs for the manipulation device that will accompany it. The weight distribution will heavily be located in the base within 4 inches of the floor.

WC

06-02-2005 00:14

Ianworld

Re: pic: Wheels and gearing

now thats quite the impressive tower you've got there. How are you lifting it, and how are you connecting your manipulator to the top tower?

06-02-2005 00:20

sanddrag

Re: pic: Wheels and gearing

What material (size and thickness/wall) are the arm "segments" made from?

06-02-2005 01:06

Madison

Re: pic: Wheels and gearing

Am I reading this correctly when I interpret it to say that your manipulator alone will weigh between 20 and 30 lbs.? That's amazing.

I'm trying to make our arms weigh less than that in their entirety, manipulators included.

06-02-2005 01:28

Wayne C.

Re: pic: Wheels and gearing

you misread- we still have 20-30 lbs to meet limit without the manipulator mechanisms. The bulk of that will be in motors in the lower section no doubt. But this will be a very simple design that will do the job.

The material is aluminum- heavily cheesholed for weight. We are very fortunate to have some great help from our guys at Bristol Myers and they know how to get these things done.

BTW- if you search out our 2000 robot you will see similarities on how this is done. Note the uprights on that machine. Making a tower like this is no secret but making one well is the tough part.

WC

06-02-2005 17:54

Mike Schroeder

Re: pic: Wheels and gearing

I disagree it wasn't a bad idea seeing as it was designed as a Modular Gearbox to be quickly removed and replaced incase of a catastrophic failure (we had one spare complete with tires and side plates)