pic: 296's Tri-Star Wheel

[CD47-Bot]

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[JVN]

Pretty cool!
How much does it weigh?

JVN

[nuggetsyl]

Looks like someone has been watching too many epesodes of ducktales

[kjohnson]

Nice - using that to get on the platform?

[Ryan Albright]

we thought about doing something like that but we decided with something else. I would like to know the weight to cause with those gears kinda looks heavy

[Dan Richardson]

wow looks really cool, like ryan said we had considered doing something to that effect..

there are a lot of cool applications to a wheel like that later too...

like mayb being able to climb up a full flight of stairs

Dan

[blindguyinanorg]

well i sure wish our team had enough enginuity to do that. it would take us the whole 6 weeks just to do the wheel and theyd still look like crap. we just hope that the pnuematic wheels being 2wice as tall as the platform and 4 wheel drive will be enough.

[greencactus3]

Originally Posted by blindguyinanorg

well i sure wish our team had enough enginuity to do that. it would take us the whole 6 weeks just to do the wheel and theyd still look like crap. we just hope that the pnuematic wheels being 2wice as tall as the platform and 4 wheel drive will be enough.

us too. we got a bunch of sponsers in the last week. too late. cuz we made our design to be as cheap as possible. due to lack of funding at the designing stage. the money's kinda going into our stomachs now.
is it hard to turn with those? unless you have casters or transwheels on the back. i somehow doubt youll use casters tho.

[Joe J.]

How many Tri-Star wheels are you useing?

[pras870]

Not to be nit-picky or even discriminatory, but I'd imagine a team like your's would be able to machine that a lot better. Personally, to me, it looks like the edges could of been done a lot better, but I don't know if you intended it to be like that.

I'm sure a lot of teams thought about doing this at one point or another, I know my team did in particular. But we realized that you can get up the stairs perfectly fine with 6 12" pnuematic tires (each at a different height to compensate each other of course).

[tkwetzel]

But we realized that you can get up the stairs perfectly fine with 6 12" pnuematic tires

You don't even need 6 pnuematic wheels. You can get up the step with 4 12" pnuematics.

[pras870]

Yeah we realize that too, but we found that our configuration actually got up more easily with 6 12" tires. That, and we use 6 12" tires every year and didn't want to break tradition

I might be thinking of the 8" pneumatic tires that came with the kit, not the 12" ones. Because I remember us trying to larger tires that came in the kit and with our drive train it actually went up worse.

[Solace]

you can also get up with 6 6" pneumatic tires and a 9" piece of aluminum on a rubber band.

[Max Lobovsky]

Originally Posted by pras870

Not to be nit-picky or even discriminatory, but I'd imagine a team like your's would be able to machine that a lot better. Personally, to me, it looks like the edges could of been done a lot better, but I don't know if you intended it to be like that.

That's machined badly?!?! In that case, our robot is the embodiment of bad construction. Much of it is hacksawed lengths of various strips or pieces of bent sheet metal or aluminum extrusion. flat metal surfaces epoxied to plastic, motors mounted to diamond plate just because thats what we had lying around... That tri-star wheels is god-like compared to ours.

Seriously, your so called quality of machining isn't terribly important, in my opinion. Not every piece has to be CNC cut and then TIG welded. In many engineering jobs, there isn't the time or the need for good looks and custom made stuff.

[greencactus3]

Originally Posted by maxlobovsky

That's machined badly?!?! In that case, our robot is the embodiment of bad construction. Much of it is hacksawed lengths of various strips or pieces of bent sheet metal or aluminum extrusion. flat metal surfaces epoxied to plastic, motors mounted to diamond plate just because thats what we had lying around... That tri-star wheels is god-like compared to ours.

Seriously, looks your so called quality of machining isn't terribly important, in my opinion. Not every piece has to be CNC cut and then TIG welded. In many engineering jobs, there isn't the time or the need for good looks and custom made stuff.

agreed.
NOTHING on our robot is welded.. yet? maybe if we have time we might reinforce. cnc? um... yeah. we have one. we used it for one piece on our robot? maybe...
its all about how accurate your eye is on our robot.. and alot of washers