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Unread 03-14-2018, 08:43 AM
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JamesCH95 JamesCH95 is offline
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FRC #0095 (The Grasshoppers)
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Re: paper: FRC Battery Upgrade

Quote:
Originally Posted by cbale2000 View Post
So, two questions:
  1. Are SB120s actually legal to use on FRC robots? My impression was that only the SB50 was allowed. Did I miss something in the rules this year?
  2. What is the actual observed benefit for using larger gauge wire for FRC battery connections? I get that there's less resistance, but does this result in longer runtimes or more efficient discharges, or something else? How significant is this benefit, has anyone measured it, or are the results mostly anecdotal?
1) Yes, the rules simply specify an "SB" connector.
2) Larger margin on brown-outs was the single biggest reason we switched to 2AWG main wiring last year, which improved ~0.4-0.7V under peak loading vs 6awg wiring.

Operating at higher voltages improves available power, run time, reduces motor heating, and results in generally more consistent performance over a match. Being worth it is up to your team to decide based on your priorities. We're not going back to 6awg any time soon though.
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