Who is hanging and how?

[Lil' Lavery]

Originally Posted by Bruceb

I still find myself wondering what the advantage of hanging by yourself is? It's only 2 points and I think it is likely that if you keep playing offense you will score at least 2 points and if you were playing defense you would probably be giving up at least 2 points given an undefended goal. If you can reliably hang and suspend another robot then I can see where 5 points is worth getting. The difficulty in doing so with a teammate that has never seen your robot or practiced with you or has properly anticipated how to hang from you seems quite high and is likely to limit the success of this operation. Thoughts??
Bruce

What if your mechanism only takes, say, 5-10 seconds to hang? Can you score 2 goals in 5-10 seconds consistently? I'd be impressed.

[waialua359]

Bruceb,
I agree on the hanging by yourself part.
Its only 2 points.
I suspect that the superior robot is one that can hang and "lift" or "carry" another robot for the 5 pointers.
The lack of rampbots discussed in CD is surprising to me for possible 4 pointers. If robots are being built to climb 45 degree angles, isnt it very possible to climb a 30 degree one?

[Techgirl675]

Originally Posted by waialua359

Bruceb,
I agree on the hanging by yourself part.
Its only 2 points.
I suspect that the superior robot is one that can hang and "lift" or "carry" another robot for the 5 pointers.
The lack of rampbots discussed in CD is surprising to me for possible 4 pointers. If robots are being built to climb 45 degree angles, isnt it very possible to climb a 30 degree one?

very very true

[IndySam]

Originally Posted by waialua359

Bruceb,
I agree on the hanging by yourself part.
Its only 2 points.
I suspect that the superior robot is one that can hang and "lift" or "carry" another robot for the 5 pointers.
The lack of rampbots discussed in CD is surprising to me for possible 4 pointers. If robots are being built to climb 45 degree angles, isnt it very possible to climb a 30 degree one?

but how do you fit a 30 degree ramp in a 84 in circle?

[ratdude747]

we are doing it this way:

1- raise hook via screw driven scissor lift
2- disconnect hook from lift
3- use the uber-winch to pull us up (and anybody hanging from us)

we are using both of the 2 "taboo devices"- scissor lifts and vaccums. but as long as it works and is clearly legal, we'll do it.

[Chris is me]

Originally Posted by ratdude747

we are using both of the 2 "taboo devices"- scissor lifts and vaccums. but as long as it works and is clearly legal, we'll do it.

What pushed you toward a scissor lift for your hook delivery system versus other kinds of lifts?

[BradMello]

Something along the lines of this

[RRLedford]

Lifting is best solved by a TENSION solution. Ramps are compression based.
Compression is high mass and produces TORQUE.
Tension is self aligning and LOW MASS.
Think cables and synthetic fiber lines.
-Dick Ledford 3135 Robbotic Colonels

[waialua359]

Originally Posted by IndySam

but how do you fit a 30 degree ramp in a 84 in circle?

A combination of pneumatics and a ramp deploying mechanism.
Technically 27.xx degrees.

[IndySam]

Originally Posted by waialua359

A combination of pneumatics and a ramp deploying mechanism.
Technically 27.xx degrees.

To lift a robot onto your robot that is on the platform?

[Salbert]

Originally Posted by IndySam

To lift a robot onto your robot that is on the platform?

If the robot is on top of you, and the top of you is the height of the platform or more, the robot on top of you has to touch the platform to get 2 points. Get two bots up, one on the platform, one on you, and you have 4 points.

MARS created a rampbot. The ramp is about 37 degrees, but we have skateboard grip tape to help robots up. Even Swamp's (179) heavy robot was able to get up. Deploying it is easy. Ours is spring loaded, you just pull the pin holding it in with pneumatics and it unfolds by itself.

Building rampbots was heavily implied in the rules and video, I'm surprised there aren't more.

[Salbert]

Originally Posted by waialua359

Bruceb,
I agree on the hanging by yourself part.
Its only 2 points.
I suspect that the superior robot is one that can hang and "lift" or "carry" another robot for the 5 pointers.
The lack of rampbots discussed in CD is surprising to me for possible 4 pointers. If robots are being built to climb 45 degree angles, isnt it very possible to climb a 30 degree one?

How are rampbots 4 pointers?

[GaryVoshol]

Originally Posted by Salbert

How are rampbots 4 pointers?

If the other two bots climb your rampbot to become ELEVATED, they get 2 points each.

[Nickel5]

Originally Posted by waialua359

Bruceb,
I agree on the hanging by yourself part.
Its only 2 points.
I suspect that the superior robot is one that can hang and "lift" or "carry" another robot for the 5 pointers.
The lack of rampbots discussed in CD is surprising to me for possible 4 pointers. If robots are being built to climb 45 degree angles, isnt it very possible to climb a 30 degree one?

Good luck achieving any rampbot. From the near part of the tower (from the driver's station) to the far part, the distance is less than the length of the robot. While the wheels won't be on the edge of the bot, it is still a very small room for the robot to fit on, and any error could be catostrophic. Plus, if one robot getting 2 points is questionable, then 2 robots getting 2 points should be out of the question. It is almost impossilbe for 2 robots to fit on the platform side by side, and in any eleimination round at least 1 of your alliance partners should be able to hang by themselves.

The only way I could see a ramp bot being worthwhile would be if the ramp bot could hang from the elevated bot, but this would most likely just result from the elevated bot being pulled down and landing on the rampbot.

My team is going with a telescoping rod with a grappling hook on the end. The hook detaches and the bot is winched up. Incase that somehow fails, we have a side hanger being made too as a back-up.

[Chris is me]

Originally Posted by Nickel5

Good luck achieving any rampbot. From the near part of the tower (from the driver's station) to the far part, the distance is less than the length of the robot. While the wheels won't be on the edge of the bot, it is still a very small room for the robot to fit on, and any error could be catostrophic. Plus, if one robot getting 2 points is questionable, then 2 robots getting 2 points should be out of the question. It is almost impossilbe for 2 robots to fit on the platform side by side, and in any eleimination round at least 1 of your alliance partners should be able to hang by themselves.

Never say never. As long as the whole robot is above the plane of the platform it is ELEVATED. The ramp's "top" could be longer than the platform in theory.