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Is it safe to jump start a motorbike from a car ?

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marco 125
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PostPosted: 11:32 - 09 Feb 2012    Post subject: Is it safe to jump start a motorbike from a car ? Reply with quote

how would you go about doing this ? the battery on my bike is dead , but iv heard this is a good way to charge the battery??

Last edited by marco 125 on 11:45 - 09 Feb 2012; edited 1 time in total
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G
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PostPosted: 11:36 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

Bump starting a bike is where you push it along and release the clutch to force the engine to turn over from you pushing it.
Unless you're a reasonably skilled stuntman, I expect this is quite a dangerous method! Smile

It should be fine to jump start a bike from a car battery without the car running. This is where you connect electric cables between the too.
It's possible it could cause damage if the car is running. However, as bike's need a good chunk less starting current, you shouldn't need the car running to keep the battery topped up/give it a bit of extra kick as you might for a car.
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marco 125
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PostPosted: 11:42 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

G wrote:
Bump starting a bike is where you push it along and release the clutch to force the engine to turn over from you pushing it.
Unless you're a reasonably skilled stuntman, I expect this is quite a dangerous method! Smile

It should be fine to jump start a bike from a car battery without the car running. This is where you connect electric cables between the too.
It's possible it could cause damage if the car is running. However, as bike's need a good chunk less starting current, you shouldn't need the car running to keep the battery topped up/give it a bit of extra kick as you might for a car.


jump start thats what i ment ahah
how would i do this ?
would my bike have to be in gear or so on ..............
im not sure how to go about doing this as i havnt done this before
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Ericck
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PostPosted: 11:49 - 09 Feb 2012    Post subject: Reply with quote

You'll need a set of jump leads.

Attach leads to the car battery and to your bike battery.

Then start the bike as normal (not in gear), bike will use
power from car battery to turn bike over.
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Polarbear
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PostPosted: 11:50 - 09 Feb 2012    Post subject: Reply with quote

connect car battery +ve to bike battery +ve with the red lead (don't let it touch the frame anywhere)

connect car battery -ve to bike battery -ve with the black lead.

Press starter button.

When running, take off the leads (do NOT let them touch the vehicle wile dissconnecting)
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G
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PostPosted: 11:52 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

Get some jump leads.

Make sure the ignition is off.
Attach the positive lead to both batteries. Then the negative. (Doing it this way around means less sparks etc.)

Start the bike as normal (so, in neutral etc).

Remove the negative lead, then the positive.
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marco 125
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PostPosted: 11:56 - 09 Feb 2012    Post subject: Reply with quote

thanks for the help , much appreciated Smile
thanks
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Polarbear
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PostPosted: 11:58 - 09 Feb 2012    Post subject: Reply with quote

theres a million videos out there, google it. The principles the same for any vehicle.
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marco 125
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PostPosted: 12:11 - 09 Feb 2012    Post subject: Reply with quote

Polarbear wrote:
theres a million videos out there, google it. The principles the same for any vehicle.


would you turn the car on then connect the wires from the car to the bike ??

or would you connect the wires ( positive to positive - negative to negative)

then start the car ? (also heard that you should not rev the car) ?

just as i was looking on youtube there was a discusion about wether or not to have the car battery on?

i would think so Confused

correct me if im wrong
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whitedevil
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PostPosted: 12:12 - 09 Feb 2012    Post subject: Reply with quote

Or just go to aldi or lidl and buy their £14 battery charger.
Good bit of kit for the price.
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whitedevil
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PostPosted: 12:13 - 09 Feb 2012    Post subject: Reply with quote

You dont need to start the car, the battery will have power in it regardless.
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Dilyan
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PostPosted: 12:15 - 09 Feb 2012    Post subject: Reply with quote

This might help after:
https://www.bikechatforums.com/viewtopic.php?t=238197
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G
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PostPosted: 12:33 - 09 Feb 2012    Post subject: Reply with quote

Don't start the car - you shouldn't need to and it's possible it will damage the bike, though I've never seen it happen myself.
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wilz1234
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PostPosted: 12:44 - 09 Feb 2012    Post subject: Reply with quote

If you try starting it with the car running, you run the risk of burning out the alternator of the car.
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Tarmacsurfer
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PostPosted: 12:46 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

G wrote:
Unless you're a reasonably skilled stuntman, I expect this is quite a dangerous method! Smile


Huzzah, G thinks I'm a reasonably skilled stuntman Very Happy
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G
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PostPosted: 12:58 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

I should add that doing it with a tow rope is cheating Wink - done that enough times myself (and with other bikes etc).

I was thinking standing in the door/window/rear/bonnet of a car while holding the bike, getting a good lick up, then jumping from the 4 wheeler to the 2, landing on it and kicking it in to gear Smile.
To be fair, there is, on consideration, a lot of easier and less dangerous ways for the same situation - however less spectacular too Smile.

Have attempted it holding on by hand to another bike/rider, but not a car. However all have been from an already seated position.
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Marcbrown46
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PostPosted: 14:05 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

G wrote:
Bump starting a bike is where you push it along and release the clutch to force the engine to turn over from you pushing it.
Unless you're a reasonably skilled stuntman, I expect this is quite a dangerous method! Smile


?????????????????????

Done this about 50 times at least, piece of cake to be honest unless were talking a busa or something !!
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G
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PostPosted: 14:11 - 09 Feb 2012    Post subject: Re: Is it safe to bump start a motorbike from a car ? Reply with quote

Marcbrown46 wrote:

Done this about 50 times at least, piece of cake to be honest unless were talking a busa or something !!


Quote:
Is it safe to bump start a motorbike from a car ?

Have you done it 'from a car', however?

Smile

Busa's not a problem to bump start in my experience. Firestorm with a dead battery was a total nightmare. My tuned zx9r in a similar situation the same - but easier to get it turn over, still.
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Rogerborg
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PostPosted: 14:23 - 09 Feb 2012    Post subject: Reply with quote

marco 125 wrote:
then start the car ? (also heard that you should not rev the car) ?


Just to clarify, when you're starting a car from a car, then you generally want the engine running.

However, when starting a bike from a car, don't run the car engine. There's a small (but why risk it?) chance of shagging the bike reg/rec.

If you have to buy jump leads anyway, then why not buy a basic charger instead? You'll want to get your battery fully charged, and taking it for a ride might not do that.

Also, if you're in any doubt about why your battery is discharged, spend £5 or so on a cheap multimeter and learn how to use it, you'll save yourself a load of time and money in guessing where the problem(s) are.
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pinkyfloyd
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PostPosted: 15:01 - 09 Feb 2012    Post subject: Reply with quote

I erm. Um. Started my bike from one of these once.

https://farm4.static.flickr.com/3543/3781112389_1387f6868d.jpg

Bike fired up instantly. Laughing
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weasley
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PostPosted: 15:03 - 09 Feb 2012    Post subject: Reply with quote

Rogerborg wrote:
Just to clarify, when you're starting a car from a car, then you generally want the engine running.


Still not convinced on this one. If the donor car's battery is healthy enough to start its own engine, then it ought to be able to start the victim car's engine too, without having its own alternator running (assuming it is a similar type of engine, ie not jumping a Land Rover diesel from a Fiat 500).
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Polarbear
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PostPosted: 15:03 - 09 Feb 2012    Post subject: Reply with quote

pinkyfloyd wrote:
I erm. Um. Started my bike from one of these once.

https://farm4.static.flickr.com/3543/3781112389_1387f6868d.jpg

Bike fired up instantly. Laughing


That was probably because of the fumes Sick
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Edgar Jessop
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PostPosted: 15:18 - 09 Feb 2012    Post subject: Reply with quote

I've jump started quite a few cars and vans over the years. The hardest are diesels, because it requires a good few amps going through the starter motor to turn them over. If you try and do that from a stationary car you probably won't get enough current to turn it over. With the engine at idle it may just stall as the load comes on. That's why they say rev the engine up to a fast idle.

To start a little engine like a bike from a big battery like you'd find on a car or van I'm sure you could just do it on static battery, ie no need to run the other engine.

Like the man says the most important thing is to connect +ve to +ve and -ve to -ve NOT the other way round, unless you like trying to pull red-hot copper wires off the terminals before the battery catches fire Shocked
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G
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PostPosted: 15:22 - 09 Feb 2012    Post subject: Reply with quote

weasley wrote:


Still not convinced on this one. If the donor car's battery is healthy enough to start its own engine, then it ought to be able to start the victim car's engine too, without having its own alternator running (assuming it is a similar type of engine, ie not jumping a Land Rover diesel from a Fiat 500).

It does seem to help - maybe because the original battery is sucking some of the power out, if that can happen?

Oh and pound stretcher or something has thin - but should be ok for bike - jump leads for £3.
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Capt Castle
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PostPosted: 21:08 - 09 Feb 2012    Post subject: Reply with quote

pinkyfloyd wrote:
I erm. Um. Started my bike from one of these once.

https://farm4.static.flickr.com/3543/3781112389_1387f6868d.jpg

Bike fired up instantly. Laughing


I have been to that very kebab van after a night in the Gloc in Oxford. Wink
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