Jump starting an 04 k1200rs ? - K-Bikes.com - Excellence in Motion
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post #1 of 18 (permalink) Old Jan 17th, 2006, 5:43 pm Thread Starter
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Jump starting an 04 k1200rs ?

The K bike with a dead battery is NG. I take care of the gell cell battery that came with the bike. But always wanting to be prepared caused me to wonder how to jump start a K f the battery didn't have enough juice. What would be the best way to make this happen. I do recall seeing small jumper cables. I could even make a pair, beng handy with a soldering gun. But more importantly whats best way to do this if cables were used. Info on a bike to bike jump as well as a car to bike jump. I recall the procedure for car to car. Good battery gets clips on each post, dead battery gets hot on post and neutral on ground other than battery. I would imagine this would hold true on the K. But the last thing I want to do is fry anything on the ever so expensive k bikes electrics. Whatever info is as always greatly appreciated. Thanks in advance

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post #2 of 18 (permalink) Old Jan 17th, 2006, 6:13 pm
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It would probably work OK. I am sure that you would not want to have the car or starting vehicle running when you tried this. The inrush into the dead battery might fry the electronics.
Bruce C
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post #3 of 18 (permalink) Old Jan 17th, 2006, 7:08 pm
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Like Brucecha said, that will work fine, however if you use a car battery, do not have the car running, and let the batteries sit hooked together for a few minutes before you try to start the bike. Easy to make a set with some 8 or 10 ga. wire that will wind up pretty small and store in a side or tankbag.
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post #4 of 18 (permalink) Old Jan 17th, 2006, 8:02 pm
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...what ever happened to engage second gear...push bike running as hard as you can...jump on board...dump clutch....
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post #5 of 18 (permalink) Old Jan 17th, 2006, 8:55 pm
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push start the bike?

Are you kidding..pushing a 600 lb bike..you want to get a hernia? Maybe rolling it downhill is OK, but jump start is much easier
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post #6 of 18 (permalink) Old Jan 17th, 2006, 9:03 pm
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yeah, you'd only do it once!
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post #7 of 18 (permalink) Old Jan 17th, 2006, 9:15 pm
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Originally Posted by Re5guy
...what ever happened to engage second gear...push bike running as hard as you can...jump on board...dump clutch....
If the battery is indeed flat, you have no juice to run the fuel pump or the CPU.
And I think you would get tired real quick. I can hardly push my KRS onto the lift, let alone bump start it.
Bruce C
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post #8 of 18 (permalink) Old Jan 17th, 2006, 9:27 pm
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Hmmm, that's a point. If the battery was stone dead flat I would agree with you, but if it was not quite dead, i.e. it couldn't turn over the starter motor (which has a high drain) but say still worked the horn, it may still have enough power available to run the fuel pump etc.

I have jumped started a K100RS with the run and dump clutch method in the past, although I had a pusher to help.

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post #9 of 18 (permalink) Old Jan 18th, 2006, 10:41 am
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Back to the original question. The easiest way to to pre-install a jump connection but you have to do that right or you risk burning down your bike. Run a battery lead (yes, the 8-10mm diameter type) from the hot lead to your underseat area so you can get to the hot lead w/o having to disassemble the bike. However you must do the following:

1. Make sure it is routed away from any sharp corners that could frey the insulation.
2. Make sure the end of it has a removable insulated cap that won't come off by accident. I've heard you can buy these but I haven't found one. I want to install one myself.

The reason this is so important is because the current in the battery during a short or during cold starting is very similar the current put out by an arc welder. It will melt steel and set anything flammable in the area on fire. Ever wonder why there are so many RVs on fire beside the road? Usually it is the long battery cable that has been re-routed by an amateur. It eventually chaffs and arcs and sets the RV on fire.

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post #10 of 18 (permalink) Old Jan 18th, 2006, 11:07 am
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Smile It's not that hard to do

Last week when it hit almost 50 degrees here in Chicago I was able to put on a quick 100 miles. Even though I had been using a BMW battery charger connected through the accessories port, the battery was weak. I was able to get the bike started by sort of using that hookup as my "jump". I was hoping that a spirited highway ride would perk up the battery. No such luck. As I was topping off the tank on the return, about a mile from home, I had a problem. As you all know, one needs a key to open up the tank. Well I don't carry a second key, so off went the ignition..... And, much to my dismay I found that the battery needs to be replaced. Not enough juice to start her up. As I was alone I really had no choice. A single person bump start in the gas station lot. I too was worried about the feasibility of getting this 600 pound piece of Bavarian iron moving fast enough to catch, etc, etc. Well it turns out it's not so bad. I was lucky. She caught on the first attempt. In fact as I was worried about this exact scenario unfolding before I headed out, I had removed the BMW cases to facilitate the " push/run, jump on, pop the clutch" scenario. I am glad I did. I would recommend that anyone who is forced to do this procedure first remove any and all luggage... Hmm. I guess that would present the same problem as one needs the key to re-attach the bags. OK, I recommend that everybody carry a second key on or about the bike, and remove the cases/tail bags before attempting. I also believe that a bump start is something that everybody should be prepared to do. It is way more fun to be self sufficient (especially if on tour and out in the wilds of wherever), as opposed to waiting for the tow truck to help one out. Even with this big bike-K1200RS- it is no big deal. If you can get her up on the center stand, you should be able to give yourself a bump start. However, if you are one who struggles with a simple center stand, well don't try a bump start. My 2cents
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