What's the best rope?

[cpapplefamily]

Originally Posted by engunneer

yes, the manual shows a strap as a legal possible rope, and even shows examples of ropes with knots and loops.

I honestly think they suggested it to reduce the Q&A on the topic about whether ropes need to be round in cross section (they do not).

grabbing and climbing any dangling flexible object seems tricky. I like the way they designed this.

I'm surprised. Now with this discovery a team can make a drum winch. Original presentation made us feel we are climbing more like a human would. As you climb you pass the rope through not coil it up.

Yes grabbing the line could still be tricky

[ToddF]

Originally Posted by engunneer

you'll have a hard time getting the rope off the davit if the robot is actively against the touchpad and the section of rope between the robot and the davit is under tension.

Design your winch so it unreels (slowly) when the match is over.

[Levi Madden]

Originally Posted by carpedav000

So according to the rules, velcro may be considered a rope as it's flexible and non metallic. Is this correct?

Just remember that G15-C states you can not attach to the field using hook and loop (AKA velcro). When you add your own rope, it becomes part of the field, therefor, you could use velcro as a rope, but you can not attach to it.

[icomella]

Yes, but the loops can only be 10" in diameter.

[Maxwellfire]

I was thinking about something like this for our team. There's no minimum diameter listed, and I think that coiling a smaller rope would be easier. (Wrapping the field rope around a pulley seemed impossible). The only question is whether you can tie a large enough knot in the end to satisfy the > 1" requirement at the top.

[engunneer]

Originally Posted by Maxwellfire

I was thinking about something like this for our team. There's no minimum diameter listed, and I think that coiling a smaller rope would be easier. (Wrapping the field rope around a pulley seemed impossible). The only question is whether you can tie a large enough knot in the end to satisfy the > 1" requirement at the top.

getting a 1" know is just a matter of a bigger more complicated knot (I suggest a monkey fist in the extreme case).

I'm not sure i would trust a robot to just a 325 lb tensile strength. a robot will be a pretty dynamic load, and the rating goes down quickly if there is any damage. Test test test!

[Riri700]

Originally Posted by Moonsault

Does this mean it can be looped also?

The rule book states that you can use a loop. But it cant be rigid? it needs to be loose. So if pulled on it tightens. And it cannot be any larger than 10" in diameter.

This can be found on page 100 for specifics.

[COL Woodchuck]

Just remember that G15-C states you can not attach to the field using hook and loop (AKA velcro). When you add your own rope, it becomes part of the field, therefor, you could use velcro as a rope, but you can not attach to it.

I believe the rules in G15 make an exception on the rope so a velcro rope of "loop" and a winch drum with "hooks" would be allowed.

From G15:
Items A-G exclude ROPES installed on an ALLIANCE’S AIRSHIP.
A. Grabbing
B. Grasping
C. Attaching to (including the use of hook-and-loop tape against the FIELD carpet)
D. Grappling
E. Hanging
F. Deforming
G. Becoming entangled

[carpedav000]

Originally Posted by Levi Madden

Just remember that G15-C states you can not attach to the field using hook and loop (AKA velcro). When you add your own rope, it becomes part of the field, therefor, you could use velcro as a rope, but you can not attach to it.

I believe this only applies if you use the velcro to strategically hold the rope in place by attatching it to the carpet.

[Kevin Sevcik]

Originally Posted by Riri700

The rule book states that you can use a loop. But it cant be rigid? it needs to be loose. So if pulled on it tightens. And it cannot be any larger than 10" in diameter.

This can be found on page 100 for specifics.

The field drawing doesn't show anything nice about the 90 degree turn the rope makes in the davit. It's shown as a square tube butted against sheet steel bent into a channel, with some weld. I wouldn't expect it to be sharp, but it's not going to be nicely rounded either. And a smaller rope is much more likely to swing and scrape across the edge than a larger one.

[saintblaze4639]

how about velcro, as according to the Ri3d 1.0 video?

[Steph342]

Is there anything preventing you from using a nylon strap and a drum with barb wire to suck in the rope and winch yourself up?

[AndyBare]

Amsteel blue is another really good option that I've worked with in the past. Very strong, and super easy to work with, and manipulate.
Check out specs: http://www.samsonrope.com/Pages/Prod...?ProductID=872
And a tutorial on fixing an eye in your rope: https://www.youtube.com/watch?v=Q22wgYZL9f0

[Kevin Sevcik]

Originally Posted by Steph342

Is there anything preventing you from using a nylon strap and a drum with barb wire to suck in the rope and winch yourself up?

Offhand, I'd say the inspectors that will take one look at your drum of barb wire, facepalm, and start patiently explaining the safety rules.

[cpapplefamily]

There is going to be a long Q and A on this one stand by. So many different ropes and straps. I'm supersized they only gave one example and did not spec minim diameters of weights.