Wat the Hook Gon Be?

[Dick Linn]

Originally Posted by Roland

Our hook is made out of carbon fiber. ...

Is carbon fiber allowed this year? Best check.

Our hook was just a piece of 1/4 x 5/8 steel bent with a hammer. It was mounted somewhat oddly - sort of horizontally with the hook part down. It would rub the bar and flip up into position. The cable and tube spring tension was all that held it in place. Crude but effective. We got all 4 robots on the bar in one match.

[Jay H 237]

Carbon Fiber is allowed this year since there's no ban on exotic materials like previous years. As long as you can account for it in your $3500 limit you can us it.

Our hook is more than just a hook. For those of you who were at the New Jersey regional you know what I'm talking about. It is aluminum tube (1"x1") cut and tig welded together with four 90 degree bends (two per side) that actually make two points to hook on to. Inside these hooks are two rollers, one on each side, connected by a timing belt to each other. This belt and the pulleys ride on the bar. Connected to one of the pulleys is a sprocket and a chain going to another sprocket and a motor on top of the hook. Once the arm is extended with two pneumatic cylinders the hook reaches over the bar and the cylinders are then retracted pulling us up. Now here's the fun part, when another robot goes for the bar, we just activate the motor and our robot still hooked and hanging can move sideways back and forth across the bar to block the opponents chance of hanging. There's a photo of our hook in the "Pics from NJ", the first column second photo down. www.pbase.com/sscamatt/robot...ew jersey day 1

[EDIT] I'm having problems getting the link to work. "jersey day 1" is also part of the link but I can't get it included. If you go to the "General Forum" then to "Pics from NJ" click the link in the first post our robot hook is shown in the first column second pic down. And if anyone knows how to make the link work please let me know.[EDIT]

[phrontist]

We definately had the most obvious hook, a CANE! See http://1418.org

(Incedentally, we were complemented on it when we won rookie all-star)

[Mark McLeod]

Originally Posted by Jay H 237

[EDIT] I'm having problems getting the link to work. "jersey day 1" is also part of the link but I can't get it included. If you go to the "General Forum" then to "Pics from NJ" click the link in the first post our robot hook is shown in the first column second pic down. And if anyone knows how to make the link work please let me know.[EDIT]

http://www.pbase.com/sscamatt/robot....rsey%20day%201

you can insert "%20" in place of any blanks.

www.pbase.com/sscamatt/robot...ew jersey day 1

I visited J&J on Saturday and saw your rolling hook in action. It was very impressive. One match you kept an opponent from scoring by making them place their hook on top of yours. Not supported by the bar= no score.

[team222badbrad]

Here is our hook. It is made out of 1/2 aluminum round stock. IT is just like a body clip.

The diameter of the opening in the hook is smaller than that of the bar therefore it snaps back around the bar attaching us to the bar.

(the only way to get us of the bar is upwards....)

here is the link:

http://www.tahsroboticsteam.org/Pict...n/100_0712.JPG

[Alavinus]

Since we had the weight luxury, we went ahead and made our hooks from 1/4 inch thick 1 & 1/4 wide steel barstock. The hooks probably weigh in, at most, about a pound a piece and have 1/8 thick sheet latex glued on to improve grip. They are mounted at the mid-section of our plow/ball grabber with two or three 1/4-20 bolts

We made it by cutting the steel with a reciprocating saw, cold forging it with a hammer, and then radiused it around a pipe. (Yes it was hard to do)

[Elgin Clock]

Originally Posted by Mark McLeod

I visited J&J on Saturday and saw your rolling hook in action. It was very impressive. One match you kept an opponent from scoring by making them place their hook on top of yours. Not supported by the bar= no score.

Here is a direct link to the picture of our robot with the hook/Shimmy on the left.

http://www.pbase.com/image/26627878

And look, in the background!! Itsa ME!! Before I shaved my beard, and still with hair (which may change by next week cause of a bet I made with the team...)


Edit: A link would be nice to include! :-D
Edit 2: A working link, that is...

[tenfour]

We made ours outta steel 3/8" bar stock. We then bent it on the 'ol brake. Looks like it was made by Jesse James himself. It is kinda the shape of the top of a pimp cane.

[jacob_dilles]

our 2 hooks ( 6" apart ) are 1/8" alluminum plate. they were originaly 2 1/4" plates, but we reduced it to save weight. we cut them on the band saw i cant believe it actualy holds the weight of the robot, but it does....