pic: 25 Base Bot Climbs 1089
 

Re: pic: 25 Base Bot Climbs 1089
 

Intersting wheels on 1089... what are they?

Also, can we get more pics of 25's practice base?

Re: pic: 25 Base Bot Climbs 1089
 

You want more pictures of their practice base? Go take photos of their robot...
It's the same base (obviously rebuilt in the spirit of the FIRST competition).

And we use 7" lawnmower wheels from Home Depot on each side (I think). We filed down the tread that came with them and glued & fastened on our own strip of tread. I'm not sure of the details, but come check it out in the pits! Someone there will be able to explain it better!

Re: pic: 25 Base Bot Climbs 1089
 

Yeah you can buy those wheels at any home depot/lowes store....i used them on a little robot i made back in high school with the tread that comes on them...they work great

Re: pic: 25 Base Bot Climbs 1089
 

We used 4 wheels last year on each side (2 groups of two) with the tread that came with them. They did work wonderfully!

Re: pic: 25 Base Bot Climbs 1089
 

The wheels are 6 or 7 inch plastic lawnmower wheels found in Home Depot.

We machined off the plastic lawnmower tire tread and placed on it raised/ridged conveyor belting, which is glued with a silicone based adhesive(don't quote me on that, but they are indeed glued) and screwed to the wheels so they will not slip or slide. They are for certain now 7inch wheels.

This provides excellent traction, and greatly increased resistance and friction when in a pushing shoving match.

Re: pic: 25 Base Bot Climbs 1089
 

Are those AndyMark two speeds? If so, I have a hard time believing that's all the reduction you need for those large wheels. Does it turn in high gear? What is the diameter of the wheels and how many teeth do the sprockets have?

EDIT: I guess I mistook the wheels as being larger. Now that I think about it, that does seem right. Nice work, and good luck!

Re: pic: 25 Base Bot Climbs 1089
 

Adam- visit our pits in Galileo- we have 1/2 of that practice base sitting on a table for all to look at

WC

Re: pic: 25 Base Bot Climbs 1089
 

If you want to check out our drive train, we will actually have one of the drive modules from the practice base on display in our pits in Atlanta (as we did at NJ and UTC). Feel free to stop by and look at it. We'd be happy to answer any questions you have about it!

Re: pic: 25 Base Bot Climbs 1089
 

Yes, they are Andy Mark 2-speeds servo shifter gear boxes.
The wheels are 7 inch in diameter after our modifications to them.
Yes, it turns in high gear.
I do not recall what the gear ratio on the chain and sprocket to the wheels is, but it is less than 3:1. I remember the discussion about the ratio, but I don't remember the final number.

Re: pic: 25 Base Bot Climbs 1089
 

Is 1089's chassis made from 80/20 Quickframe or similar? If so, how has that held up? I've been looking at it for 2008, but I've been a little unsure of its durability if subjected to multiple competitions. (Wierd, this is my 1089th post)

Re: pic: 25 Base Bot Climbs 1089
 

We haven't had any major dents in it this year. The addition of the bumpers has significantly reduced the impact of other robots smashing into us. Comparatively, we used a frame almost identical to this in 2003 (Quicksilver), and that one got bent and bruised a LOT more.

Re: pic: 25 Base Bot Climbs 1089
 

How much are you guys selling it for? :)

... I will definitely stop by, I have been a fan of the evil machines since I joined FIRST.

Re: pic: 25 Base Bot Climbs 1089
 

Thanks, that's good to hear.

Re: pic: 25 Base Bot Climbs 1089
 

Arefin-

there is no need to sell it. The plans are in the new book- for the most part.

With a little luck we will be helping a lot of teams make them over the coming summer.........

WC :cool: