LiPo

[razerdave]

I had planned for a full metal box for both my feathers anyway just for security and ease of removal.

Dave mentioned above the connectors should handle the max discharge of the lipo. In my case, thats 150A. Its a given than conventional Andersons will not handle that, since they were already melting the housing with the NiMH's in there :P. Deans are, from what I understand, also insufficient, but EC5 connectors may suit purpose.

Can I get some insight from lipo users what they use ? My concern is mounting a new link in Satanix is going to be problematic and it uses Andersons.

[jonny]

ec5 connectors =

[Mouldy]

Mario- that magnesium comment was funny... Well done?... :|

Dave- deans will be more then fine for satanix... I've tested deans to be reliable at 180amps... They start to weld together at 200a... You won't be pulling that much.

The 2mm metal base rule was agreed to prevent lipo fires causing an arena with a wooden floor to ignite (should a lipo fire happen in the arena) ... So moan all you like, but if you set fire to an arena I doubt you'd be very popular. This rule could do with clarification by Kane... But it's something I'd advise.

[harry hills]

who builds a robot with a less than 2mm base anyway?

[razerdave]

Not many, but people can build robots with a thick PLASTIC base that could be melted away in the event of a lipo fire.

[chompalot]

I was thinking of using kevlar / carbon fibre

[jonny]

Can we avoid the metal base requirement if we have our lipos in lipo bags in the robot?

[chompalot]

I would think that it would satisfy the requirement, but since it seems to be an event organiser requirement then we would need to seek the advice of the event organiser.
Also it needs to be specified in the rules so that we can design robots which can compete if built to the rules.
Who do we approach?

[maddox10]

Mario- that magnesium comment was funny... Well done?...
The 2mm metal base rule was agreed to prevent lipo fires causing an arena with a wooden floor to ignite (should a lipo fire happen in the arena) ... So moan all you like, but if you set fire to an arena I doubt you'd be very popular.

It does what you asked for, being 2mm thick metal. Also, compressed steelwool meets that criteria. Both are utterly daft idea's, as both types burn easely enough with the right kind of stimulation. If I want to pull it to utterly idiotic level, what about 2mm pure sodium. Also metal...

And to prevent a LiPo fire burning down an arena, a 0.3 mm thin fully enclosed steel box will do a better job than a 2mm thick ali plate under the LiPo. As if orientation is unchangable in a robot.
And of course. We could try a Mythbuster alike test. Can a burning LiPo pack ignite a standard arena floor?

BTW, ali can burn quite nicely if the circumstances are right. HMS Sheffield as point in case.

This rule could do with clarification by Kane... But it's something I'd advise.

It's not a rule, as it isn't in the build rules. It's an guideline, yours.

[leorcc]

I remember talking with Grant about this in the past, basically if the lipos are contained in something to prevent fire from spreading to the arena floor, and having a fuse in place to catch massive power draws, lipos are perfectly fine to use. Something like a non-flammable metal or fiber weave like lipo sacks have comes to mind.