Can a bike be jump started of a car

[lnewland]

Hi all, I started the bike the other morning, which it did fine however i put it into gear prior to removing it from the side stand and it cut the engine. as a result of keep trying to start it i think i have flattened the battery. The bike is currently stuck at work and i was wondering if it is possible to jump it of a car without causing any damage to the bike. in the past i have used a power pack but i seem to have lost the charger.
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Cg125 stolen and returned trashed
Cb500
Yamaha R6

[Nb]

Dont really see a problem with it.
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Colin1 wrote 'Im grateful for what i can get, which isnt all that much.'
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[Marci]

S'always worked for me... just tell em not to step on the gas while it's hooked up to the bike...

That said, I've never had the car running when I've done it - always got whoever to kill the ignition - car batteries are usually plenty strong enough to get you going without needing the engine running.
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FAB-Racing MiniMotoSidecars - Back with a vengeance - F1 Class 2011...
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[Finglonga]

It will be fine, don't worry. Why not bump start it though much less hassle.
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Andy Sez....
F.Y.Y.F.F.

[smegballs]

Yeah Ive heard that running the engine can cook your reg/rec as all of a sudden there is a massive power in your system and no load. So the reg/rec takes a massive loading an promptly expires.....

Ive used a car battery plenty of times before. We used to have a car battery on a little trolley for jump starts, power drill whatever. That always worked fine an started a bike within a second or two...

Just watch the polarity tho or you will cook your fuse....

[lnewland]

[Pete.]

Charging voltage is the same for bikes and cars, but there's no need to run the car because a fully charged car battery will crank a bike until the starter motor cooks itself before it goes flat.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[smegballs]

Thats a good point there!

Try not to use the starter motor for a long period, try to give it some time to cool between starting attempts.

Of course as long as the bike is behaving it should be ok if you have just ran down the battery.

[stinkwheel]

Fine, but don't do it with the engine running.

If the cars voltage regulator is set to charge at a slightly higher voltage than the bikes one, your bikes reg/rec will try to dump the excess voltage from the car alternator to earth. The car will be putting out a lot more amps than your bikes reg/rec was designed to cope with and you could cook it.

EDIT: And don't attach the positive directly to the cars battery positive. On modern cars there is usually a seperate "tag" to attach jump leads to. Once the bike fires up, it'll try to charge the car battery too. On some cars (peugeots for definate), charging directly onto the battery positive can kill the ECU. It'll say in the manual where to attach jump leads.
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[Pussy Magnet]

the car is 12v and most small bikes under 125's are run on 6v batterys this is where you hacve to be carefull becuase may overload the cicuit cuasing it to fry but it should be ok for a small amount of time. ive only jump started 1 bike it was a kle500 and it worked but i always bump start bikes so much easyer and less effort needed .

[Raffles]

[Kickstart]

[L-Jam]

Bump starting; you look like a dick in the middle of town, but it gives you a great sense of satisfaction when the engine kicks in.
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[konsoli]

my 70cc scooter was once jump started by a 2litre ford van. yer, they can be.

[G]

[el_oso]

try bumping a bmw r1100. not always possible. took three guys pushing and one 6'6" guy on the bike downhill at least three attempts to jump it.

i've started a bike with a car battery no problems. little xr125. (was a bit wet and didn't fancy going out in the rain
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Duke 390
Previous: '05 XR125L | '96 XJ600S Diversion |'05 Suzuki GSXR1000 | '05 Honda CBR125-R | '97 YZF 600R Thundercat | '11 Honda CBR250
Car: Jeep Wrangler 4.0L

[G]

Pah, try eight for a firestorm and a lot lot more than three attempts! Ok, we were hung over.. and this was after trying to jump it from another bike and it failing.

[CaPo]

Ive had success in the past jumping my gpz off of fords. Tried it recently with a pug 306 though and it killed the starter solenoid

[Finglonga]