Tethers

[Guest]

Any news abot the tether i.e what is the best thing to use how to fit em etc

[team_ireland]

Tethers

Am I correct in thinking that a teather is basically a bit of string keeping the flipper attached to the robot if it breaks away from the robot.

Now I Know string would not hold it (5-10mm wire rope would do the trick) but am I correct in what I am thinking a teather is?

Regards
Ian Mc Donald

[blazerbotics]

Tethers

yeah, its mainly due to an incident that happened during S7. Someones piston blew through the end of the cylinder, although nothing flew off, it could of! But it was a dam big bang when it went!

[stu]

Tethers

They shouldnt have used a 16bar RAM at Full pressure (50bar+) then should they.

Mr Stu

[maddox]

Tethers

Spawn Again, and it was a 10 bar cylinder with a LONG spring to cushion the endstroke. I warned them a half a year ago. They didnt listen.

Tethers.. a aramide rope will do the trick.

[woody]

Tethers

A possible alternative to Aramid / Aramide rope....

http://www.dsm.com/en_US/html/hpf/products.htmhttp://www.dsm.com/en_US/html/hpf/products.htm

http://www.englishbraids.com/products/marine/ya.htmlhttp://www.englishbraids.com/products/marine/ya.html

[teamchip]

Tethers

Spawn eh...pity it wasnt spotted earlier:sad:

Tom

[killercarrot]

Tethers

Ive been thinking about this and forgive me for being thick, but if the ram bursts on a flipper, the thing will simply continue to rotate around its hinged pivot. I cant see that tethering anything will stop this, unless the tethers reinforce the pivot point. If you try and stop the sepearting ram you are trying to stop a tremendous force, if you simply allow it to continue in its arc, its likely to flip the robot but not to send any shrapnel anywhere???
Please let me know if Im missing the point.

[teamceros]

Tethers

From what I gather the tether is in place to stop the flipper going further than it should past the rams stroke especially these new breed of robots that use static rams eg gravity where the flipper is not connected to the ram, this way if the cylinder end did blow off the tether would be designed to stop the movement of the arm to say just above its highest point rather than all the way over and possibly hitting someone behind if they are loading the robot into the arena or powering up. Apologies if I have the wrong end of the stick would not be the first time :P

Francis

http://www.ceros.org.ukwww.ceros.org.uk

[killercarrot]

Tethers

ahhhhhh
now i see

[Mouldy]

Tethers

Does a bungie cord in a single acting system count as a teather? I pressume it will, but better safe then sorry!

regards
Dave moulds
Team Turbine/PLF

[jamesb]

Tethers

dont know, but hearing the latest discussion at fra meeting, I think it maybe not.

Id not worry too much for now though, if you enter the robot early and explain the mechanism to the evnt orgainiser they can advise you what they will need for that event.

[killercarrot]

Tethers

Is there any more information on tethers particularly with the FRA event coming up.

[jeremy_cuss]

Tethers

Rob,

My understanding is that you cant have a new rule without specifying what is required. It hasnt been done yet. If you volunteered to produce a draft rule, Im sure that the executive committee would bite your arm off.

The current suggestion, as I understand it, is that individuals are urged to come up with their own solutions to the problem. From that a rule change will emerge.

There would need to be some time to fit a tether before the rule became operational. In my opinion I dont think that we will have a new mandatory rule for tethers on flippers in 2004 - but I may be wrong!

Jeremy

[blazerbotics]

Tethers

i believe there is testing being carried out on different materials, including seatbelts. I havent seen any robot with them in yet.