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So I was on a benefit moto rally last weekend and all went well, but at the end I parked the bike and turned the key one notch too far - and left the "parking" light on. Came back over an hour later and bike battery was dead only "click click click." Now the geniuses at the rally (the HD "rescue truck") had no jumper cables or start box (gosh why would we need that with 2,500 bikes around?). The police cruisers (20+) none had jumper cables either. So add me to the list of guys that have killed bike with the damned parking light.

So here are a few questions:

1. can a MV be push started? Not that it would have helped, was at bottom of a hill.

2. Can an MV be jumped from a car (i.e., 12V)?

3. Has anyone ever been to a bike rally where no one had jumpers or a start box!? I thought that was insane!! I asked all the goldwing dudes with more cargo space than a Suburban, they had everything BUT cables.

4. Has any motorcyclist in history ever actually ever used the dang rear "parking" light? Why is this function not deleted or placed at another stop on the ignition!?

Well after sitting for an hour or so, some guy rolled up on a crappy 80s honda 750 and asked if I needed a jump. He rode home, got his cables, came back, and jumped me in about a nanosecond, huge snaps to him. He then jumped another guy (harley owner) who also had dead battery, and who was also utterly stunned that the "rescue truck" had no cables or start box (the Harley rescue people actually asked me what a start box was!!).

In the end a great ride, just annoyed at the organizers and at the dang "parking" light ignition postion that is all too easy to hit, and unnoticeable that the back light is on whilst parked in the sunshine.

PS: some lady walked by my bike before the ride started, and said "hey look, a chinese bike!" :wtf: :wtf:
 

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Should be able to be jumped from a car, had to jump a friends Ninja 250 a couple times from her car :)
 

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You can definately jump start a bike with a car. Just connect the cables & DO NOT start the car. I just purchased a used 910S a few weeks ago & had to do this. Bought a battery tender immediately following. I saw this group ride coming on Rte 9N, as I was coming south. I wasn't happy about having to stop & wait thru their police escort.
 

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Geerod said:
You can definately jump start a bike with a car. Just connect the cables & DO NOT start the car.
Very Important point. :jsm:
 

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Obmot said:
So I was on a benefit moto rally last weekend and all went well, but at the end I parked the bike and turned the key one notch too far - and left the "parking" light on. Came back over an hour later and bike battery was dead only "click click click." Now the geniuses at the rally (the HD "rescue truck") had no jumper cables or start box (gosh why would we need that with 2,500 bikes around?). The police cruisers (20+) none had jumper cables either. So add me to the list of guys that have killed bike with the damned parking light.

So here are a few questions:

1. can a MV be push started? Not that it would have helped, was at bottom of a hill.

2. Can an MV be jumped from a car (i.e., 12V)?

3. Has anyone ever been to a bike rally where no one had jumpers or a start box!? I thought that was insane!! I asked all the goldwing dudes with more cargo space than a Suburban, they had everything BUT cables.

4. Has any motorcyclist in history ever actually ever used the dang rear "parking" light? Why is this function not deleted or placed at another stop on the ignition!?

Well after sitting for an hour or so, some guy rolled up on a crappy 80s honda 750 and asked if I needed a jump. He rode home, got his cables, came back, and jumped me in about a nanosecond, huge snaps to him. He then jumped another guy (harley owner) who also had dead battery, and who was also utterly stunned that the "rescue truck" had no cables or start box (the Harley rescue people actually asked me what a start box was!!).

In the end a great ride, just annoyed at the organizers and at the dang "parking" light ignition postion that is all too easy to hit, and unnoticeable that the back light is on whilst parked in the sunshine.

PS: some lady walked by my bike before the ride started, and said "hey look, a chinese bike!" :wtf: :wtf:
1. Yes, and with relative ease. You can invariably 'bump' start these bikes on your own with as little as a 15-20ft push, I'm surprised you didn't try it.

2. Yes, but there is a risk of permanently damaging your battery leading to premature battery failure.

3. I wouldn't know, I've as yet to find myself at an event with a dead/drained battery.

4. It's not something I've used myself and I don't know anyone else who uses this feature. I suspect it's maintained for hysterical raisins.

As for the HD guys not knowing what a 'starter box' was, that's probably down to nothing more than a terminology clash. In all honesty 'starter box' seems a rather vague term, up until reading your post if someone had walked into my shop asking if I had a starter box I would've definately asked them for clarification on what they were reffering to as it's not a term I'm familiar with.
 

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Sorry to hear of your battery problems. My MV is the first bike I've owned where the "park" function is a concern. My dealer emphasized the point during the delivery process and I've caught myself with the key in the wrong position 3 or 4 times. I've gotta tell ya though, I'm pretty impressed that, after using "damned" you were able to express you're frustration using "dang"...twice, no less! Gotta go; buncha Chinese guys wanna take my bike for a spin. Weird.
 

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Man Obmot, I saw this post and thought you were going to say you went down or layed over the bike! I'm relieved.
 

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I am one of the stupid people with stupid questions, but... why must the car be stopped before you jump it?
 

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The car's alternator will put too much amperage into your motorcycle's electrical system. You may get away with it, or you may be buying a new voltage regulator/rectifier.
 

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esq'z me said:
The car's alternator will put too much amperage into your motorcycle's electrical system. You may get away with it, or you may be buying a new voltage regulator/rectifier.
That's not true. You cannot push current into an electrical circuit. An electrical circuit/system will draw only the current it requires regardless of the current capacity of the source.
 

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Yes....but none-the-less you may find your rectifier toast after starting an automoble while attached to your bike with jumper cables...and I have also seen some meter assemblies go down for same reason. Perhaps it is the sudden voltage or current spike? I don't know, but I do know the results.
 

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I often wonder if it's not more of a case of the particular component(s) that are being reported to blow/pop/fry while being jump started from a car were actually faulty anyway and the root cause of the initial drained battery.

Alternators, regulators, rectifiers etc... on cars and bikes are pretty much the same thing with the only real notable difference being the forward current carrying capabilities with bikes being normally less. Despite that, I'd expect that they both have similar levels of surge/spike protection. So I personally am not convinced that there is any increased risk of damaging these types of components when jump starting from a car.

My opinion is that the only real risk of damage is to the battery itself. The gel/AGM batteries used on bikes have very specific voltage and current charging characteristics and typically have very low tolerance to being subjected to voltages and current which exceed those characteristics. The available current from the booster source will generally be much greater than the bike's battery requires but as the battery itself has no inbuilt charge current limiting, the battery ends up consumming/drawing far greater currents than it's designed/expected to.

Of course these are all just my own personal opinions and theories and not based on any real world testing.
 

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Some folks call it a start box, we call it a jump box.......mmhmmm, mmhmmm.
 

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esq'z me is thinking along the right line but it is not the amperage that is the concern when runing your car when jump starting your bike. It is the voltage. When your car is running the alternator develops 14.6 volts or so, maybe a bit more, and that is the voltage you will jump to your bike. This voltage could be detrimental to any of the bikes electrics, electronics. When your car is NOT running the battery voltage is 12 volts or maybe a bit less. Plenty safe for jump starting your bike.
 

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Hartley hare,
Everything you said makes very good sense, and perhaps it is the battery capacity at the root of the situation, but I do have documented cases (not on MVs, mind you, but other products) where digital instrument meters and voltage reg/recs have been damaged by jump start from car when the car was started. The voltage reg/recs were not the auto type as found on the MV alternators, and were of much lower design limits. The damaged meters, on the other hand, are current high range products with FI.

Bottom line here, if you have to get a jump and can't push start, is don't uneccesarily risk potential damage. I strongly recommend using the battery power from the car WITHOUT starting the car.
 

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Indeed I'd agree and recommend that 'bump' starting is preferential over jump starting. I'd also agree and recommend that while jump starting from car you don't start the car for the simple reason being there is no need/benefit in doing so and it's one less thing to concern yourself with.

Although I've heard various claims and stroies about things going pop, I personally have never encountered a problem while jump starting a bike from other vehicles (engines running or not) so it hasn't affected me to the point that I've needed to look into it. I do suspect however, that if indeed failing components are a direct result of being jump started from a car then it could possibly be more down to bad contacts on the actual jump lead connection and potential arcing at the contacts rather than actually physically starting the car. On many bikes it can be difficult to access a suitable grounding point to attach the jump lead which probably doesn't help.

Schlep said:
esq'z me is thinking along the right line but it is not the amperage that is the concern when runing your car when jump starting your bike. It is the voltage. When your car is running the alternator develops 14.6 volts or so, maybe a bit more, and that is the voltage you will jump to your bike. This voltage could be detrimental to any of the bikes electrics, electronics. When your car is NOT running the battery voltage is 12 volts or maybe a bit less. Plenty safe for jump starting your bike.
The bike's own electrical system typically operates at a voltage of 13.1-14.6VDC when the alternator is spinning. So 14.6VDC from a car supply is of no concern.
 
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