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Nick
Experienced Roboteer
Joined: 16 Jun 2004
Posts: 11802
Location: Sydney, NSW
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Thanks Brett, really no hurry at all since the next comp and Robowars is some way off yet.
While the subject of pack construction is hot (pun not intended), has anyone seen "high temperature" glue guns for sale? The stuff that is used in the original Battlepacks is way better than the standard hot melt glue and is still fairly easy to remove for repairs.
I had an idea about estimating the current capacity of copper braid, please feel free to flame me if the reasoning is off:
Everything else being equal, current capacity of a wire is linear to its cross section area. For a given lengh, the cross section and weight relation is also linear. SO, if you weigh a lengh of a known wire gauge (without insulation) and the same length of braid you will get a ratio of their weight and therefore cross section area. You don't need to work out the exact area, although it can be looked up fairly easily. Once you have the ratio, you can look up a supplier's data on the web, get the current capacity of the known wire and multiply that by the weight ratio to get an estimate for the braid.
I am just guessing here, but the capacity of the braid will probably be higher than a similar round wire due to its greater surface area and better heat dissipation. this is all rather rough but hopefully good enough for our needs as long as the rating is higher than the continuous current rating of the cells. _________________ Australian 2015 Featherweight champion
UK 2016 Gladiator champion
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Wed Oct 06, 2004 3:14 pm |
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