New link design

[m2xt]

Mark, not so sure thats correct. The rating is also based on the temperature rise. They have a max operating temp of 105 deg C. For example, a 50A connector can officially handle 100A for 16 seconds if you use 10mm2 cable (the bigger the cable the better as it acts as a heatsink) whereas the 175A connector can handle 400A for the same period.

[big_nipper]

Looking at thier datasheet:

http://www.andersonpower.com/products/pdf/DS-SB50REV01.pdfhttp://www.andersonpower.com/product...-SB50REV01.pdf

It does state that there max continous current is 50Amp for a 20C Temperature rise with 6AWG (13mm sq) wire, but their figures dont seem to add up.

At the full 50A it states a voltage drop of 10mV, hence 0.5W of power lost in heat. For this to be true then the connector + wire must act like a heatsink of 40C/W and that seems too high with such thick wire.

[jim]

I did a bit of work in the garage last night and managed to cut down one of the 175A connectors so that it would fit in. This still leaves the issue of multiple links, however.

[big_nipper]

Jim, as I understood it, if you have 2 seperate electrical circuits then 2 seperate links are OK (with 2 seperate power lights) but weather they have to be together (or just near to each other) is a little unclear, and I suspect that if the robot design does not allow them to be together then it should be accepted by the event Organiser anyway. After all to make a Co2 robot safe you have to both pull the link and turn off the Gas and they are not always together so I dont see much difference.

[babeth]

I think it should be indicated clearly to the arena crew that there are multiple links because in case of emergency they are the ones who must pull the links out.

[stu]

At Roaming Robots Events our arena man Pete always watches how machines are turned on so he knows what to turn off.

Mr Stu

[robjones]

Tie all your links together with cable tie or string so that the crew will always pull all the links out, no error possible in the heat of the moment.

[jim]

Unfortunately, the only way I could do that with my robot would be have the string going round the outside of the robot - it would be very easy to catch during a battle.

[leorcc]

we have a feather in holland wich could be interpreted as 2 robots bolted into 1. so, 2 receivers, 2 batterypacks, 2 removable links, 2 power leds. The links are not in the same place so you do have to de-link one side first and then the other. No way around that. I have allowed this robot in the competitions. If other Tech checkers have a problem with it i would appreciate another solution, but i honestly dont see how else to do it.