Wheel Size?

[davidthefat]

Originally Posted by Apeace

So it sounds like you could use larger wheels to get over the barrier much easier?

Other than design constraints, nothing is stopping you from doing it.

[Flimsor]

I think we should use a custom sized tank drive system that is the exact maximum dimensions allowed. That way, if the robot gets flipped over it can still drive, and we can get over the bump.

You should totally make adaptive-geometry wheels to get over the bump in the middle.

[Ernst]

Originally Posted by ThaineP

You should totally make adaptive-geometry wheels to get over the bump in the middle.

How about a Tweel?
They might be used in future lunar rovers, so they should be good enough for FIRST.

[couvillion]

Along the lines of cool and not really helpful.



I have not been able to come up with a engineering reason as to why tri-star wheel is better than a regular wheel of the same over all size. But like the design all the same. For those that aren't sure what is going on here it is the same setup as a planetary gear system with the ground acting as the ring gear.

[ratdude747]

Originally Posted by couvillion

Along the lines of cool and not really helpful.



I have not been able to come up with a engineering reason as to why tri-star wheel is better than a regular wheel of the same over all size. But like the design all the same. For those that aren't sure what is going on here it is the same setup as a planetary gear system with the ground acting as the ring gear.

I remember seeing an old 2004 clip on youtube with a bot that used them to climb the stairs...

[The Lucas]

Originally Posted by ratdude747

I remember seeing an old 2004 clip on youtube with a bot that used them to climb the stairs...

That was 1218 The ChaBots. They made it all the way to the Einstein Final that year. They were pretty hard to stop, even if you dropped a robot on them.

[the man]

Slightly irrelevant, but I remember a team that had a large gear dropped on their robot during shipping. That would suck.

[Alex Cormier]

Originally Posted by The Lucas

That was 1218 The ChaBots. They made it all the way to the Einstein Final that year. They were pretty hard to stop, even if you dropped a robot on them.

340 also had them on Einstein in 2004.