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Discussion Starter · #1 ·
I have a set of probably 10 or 12 guage small jumper cables that somebody has cut the ends off and crimped on lugs. Because of how small they are I'd like to make a set of jumper cables for my silverwing, but so far the strongest "small" clamps I can find that I think might work only handle 75 amps... Is that going to handle enough amperage? How much amperage do these batteries hold and how much does the charging system put out?
 

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Well, number 10 wire can safely carry 30 amps, number 12 carries 20 amps. So it isn't the terminal ends that may be a problem, it could be the wires themselves. These wires will carry significantly more for short time periods tho. As far as what the batteries "hold", a cycle battery like we use can probably punch out 200 amps or so. A car battery can do 500-600 amps. But it really doesn't matter how many amps the battery can deliver. What matters is how amps does the starting motor ask for when cranking.



I believe that our bikes use from 60-70 amps during normal cranking, a locked rotor would draw more, but that doesn't often happen. It also really doesn't matter what the charging system is putting out. That isn't enough to be a problem with either the wire or the clips. A CX's max output is 170 watts, which at 12 volts is slightly less than 15 amps. A GL produces 250 watts, a little over 20 amps.



Bottom line is that it should be OK. Just don't crank too long, if the bike's battery is completely dead and you are only using the jumper to power the cranking.
 

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I have made two sets of jumper cables for the cx and they both work fine. What I did was get a 9 foot el cheapo dollar store extension cord and cut the ends off. Then connected clamps on them making sure the right colors were hooked on the right side. Never had a problem so far.
 

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Discussion Starter · #4 ·
Well, I hope for emergency use only, but I just wanted to make sure I wouldn't fry anything in that case of emergency. I hope to never have to jump start the bike.
 

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Well you could push start it but 1 in 3 times doing it for another person and myself pushing I throw up. Especially when the exhaust kicks in and gasses me in the face.
 

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If you jump start your bike,don't ever turn on the ignition when the other vehicle running! You may get your whole electrical system replaced if you do.
 
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