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Old Aug 14, 2012 | 09:27 AM
  #1  
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Default Jumpstarting...

I had a dead battery at East Coast Sturgis this weekend (don't ask...) and luckily someone had a jump box so I got my ride started no problem. But my question is, has anyone tried jumping one bike from another using the Battery Tender pigtail that most dealers are installing? Even with the standard 10 amp fuse, it should provide enough juice to start the dead bike.
 
Old Aug 14, 2012 | 09:38 AM
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I suspect the fuse would instantly blow as the starter draws much more than 10 amps.
 
Old Aug 14, 2012 | 11:25 AM
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Originally Posted by lo-rider
I suspect the fuse would instantly blow as the starter draws much more than 10 amps.
Indeed.
 
Old Aug 14, 2012 | 11:42 AM
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yep tried it no fuse didn't live
 
Old Aug 14, 2012 | 11:54 AM
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I made a set of bike jumper cables years ago. Recently I had to use my wife's van to jumpstart my bagger. It worked but the cables got too hot to touch. I think I'll redo them with a heavier gauge wire. I wouldn't trust any pigtail (batterytender, heated gear, etc.) running from the bikes battery. Like others have said, a 10amp fuse is way too wimpy...

I think I'll use a wire gauge similar to what the bikes battery cable is. Does anyone know what gauge the stocker is? Thanx.
 
Old Aug 14, 2012 | 12:42 PM
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Originally Posted by 2whlr4life
I made a set of bike jumper cables years ago. Recently I had to use my wife's van to jumpstart my bagger. It worked but the cables got too hot to touch. I think I'll redo them with a heavier gauge wire. I wouldn't trust any pigtail (batterytender, heated gear, etc.) running from the bikes battery. Like others have said, a 10amp fuse is way too wimpy...

I think I'll use a wire gauge similar to what the bikes battery cable is. Does anyone know what gauge the stocker is? Thanx.
The bike's cables are sized to carry power a couple feet, not the distance from your bike to a car's engine room.
 
Old Aug 14, 2012 | 12:42 PM
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10 amp fuse should blow and save you from yourself and your idea. Small wires---too much resistance. Creates heat and causes a voltage drop at the solenoid/starter. Not a good idea. Dead or weak battery is hard on your alternator. Sometimes jump starts are made necessary by people leaving things turned on and draining the battery by mistake.
 
Old Aug 14, 2012 | 12:54 PM
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Jumping off the pigtail is definitely not recommended. Plus, if you use the battery clips the come with most of the chargers, they are NOT intended to be used for that purpose, the + and - wires would be REVERSED, causing the fuse to blow or even worse melting the wiring. The pigtails that connect to a battery are only meant to be used with the charger, not to attach to the pigtail on the bike. I had thought of doing that, but looking at the pigtail shows that connecting them that way you will put 12V to GROUND!
The pigtails could be used to charge your bikes battery from another vehicle that is not running, but make sure to connect to the battery in reverse, or you WILL have problems!
There was a post last year, where a guy melted his wiring by trying this! BEWARE!
 
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Old Aug 14, 2012 | 01:11 PM
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The wires are NOT reversed.

+=+

-=-
 
Old Aug 14, 2012 | 01:14 PM
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I bought motorcycle jumper cables from a vendor and have used it direct battery to battery several times with no overheating or other issues.
 



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