Jump start
- chris vtr virgin
- Posts: 294
- Joined: Wed Feb 23, 2011 8:23 pm
- Location: dunfermline
Jump start
As you will maybe already know I have a flat battery
New one comes next week
What's the thoughts on jump starting it of the car
New one comes next week
What's the thoughts on jump starting it of the car
Some twins have all the fun !!!!
-
- Posts: 710
- Joined: Sat Jan 16, 2016 12:07 pm
- Location: Slough, Berkshire
Re: Jump start
I have but they say you shouldn't.
If you decide to then DO NOT have the car running. If you do it could fry your ECU.
If you decide to then DO NOT have the car running. If you do it could fry your ECU.
If it aint broke, get your bloody hands off it!
Re: Jump start
Yes, it's fine as long as the vehicle isn't running. The vehicles charge voltage is too high for the motorcycles ECU and other components and could cause damage. In theory, you'd just be connecting a battery in parallel.
- Saintsman27
- Posts: 727
- Joined: Wed Nov 07, 2012 9:28 pm
- Location: St Helens , Merseyside
Re: Jump start
I agree... remember + to battery + lead peg .... - to ground say rear brake disc ,, not the -
terminal .. best way... or if you can just wait 7 x 24 hrs ... lock it up and walk away come back with
your new battery.... good time to check your wiring with your acme avometer
terminal .. best way... or if you can just wait 7 x 24 hrs ... lock it up and walk away come back with
your new battery.... good time to check your wiring with your acme avometer
Re: Jump start
If you are feeling energetic then bump start it
Re: Jump start
What?
Is a car battery's voltage higher than a bikes?
(answer- no...)
The reg/rec works in exactly the same way, the voltage going into a car battery is the same as a bike's.
Assuming that the car's reg/rec isn't faulty, there's no problem at all.
And any higher voltage going in th the bike should be shunted to heat by the bike's reg/rec, just the same as the 25+ volts that the bike's alternator produces at full revs.
You shouldn't need to have the car's engine running, but iI wouldn't have thought it would do any damage if it is.
Is a car battery's voltage higher than a bikes?
(answer- no...)
The reg/rec works in exactly the same way, the voltage going into a car battery is the same as a bike's.
Assuming that the car's reg/rec isn't faulty, there's no problem at all.
And any higher voltage going in th the bike should be shunted to heat by the bike's reg/rec, just the same as the 25+ volts that the bike's alternator produces at full revs.
You shouldn't need to have the car's engine running, but iI wouldn't have thought it would do any damage if it is.
It's not falling off, it's an upgrade opportunity.
Re: Jump start
Hi guys,
I wouldn't have the car running. Some vehicles (like mine) have a calcium battery which I believe does require a slightly higher voltage to charge. That isn't really the issue though. If the bikes RR attempts to shunt and the car is running, the car will see it as a load and compensate. Your poor bike's RR will be trying to dump all the current the car can produce which will likely be more than it can handle. In short (pardon the pun), don't take the risk having the vehicle running.
As for a good earth, choose a location on the engine preferably (like the bolt where the battery earth cable attaches). I'd avoid running current through bearings so not use the swingarm or brake rotor etc.)
Cheers
I wouldn't have the car running. Some vehicles (like mine) have a calcium battery which I believe does require a slightly higher voltage to charge. That isn't really the issue though. If the bikes RR attempts to shunt and the car is running, the car will see it as a load and compensate. Your poor bike's RR will be trying to dump all the current the car can produce which will likely be more than it can handle. In short (pardon the pun), don't take the risk having the vehicle running.
As for a good earth, choose a location on the engine preferably (like the bolt where the battery earth cable attaches). I'd avoid running current through bearings so not use the swingarm or brake rotor etc.)
Cheers
- agentpineapple
- Posts: 15124
- Joined: Sat Mar 26, 2011 9:16 pm
Re: Jump start
because I'm away from my bike for longish periods of time, I have to jump start it every 4 weeks or so, I always have s couple of spare fully charged car batteries indoors, I just use use of them, never had an issue, well that's not true, one time I used a metal table to put the car battery on whilst jump starting the bike, it started with no issues, other than a massive backfire lol. but when I removed the leads from the bike, I didn't realise that i'd put them on the metal table, it wasn't until I saw smoke, turned around to find the table was on fire...
quickly removed the leads and the fire went out, lesson learned doh!!!!
quickly removed the leads and the fire went out, lesson learned doh!!!!
HEY YOU GUYS!!!!!!
- Stormin Ben
- Posts: 1234
- Joined: Sun Dec 01, 2002 12:23 am
- Location: Birmingham
Re: Jump start
Am I being thicky here?
If the battery negative is attached to that bolt on the engine anyway, why wouldn't you just attach the negative to the battery negative?
Its not like the bike is actually earthed anyway as last time I checked two big rubber hoops dont conduct electricity that well!!
If the battery negative is attached to that bolt on the engine anyway, why wouldn't you just attach the negative to the battery negative?
Its not like the bike is actually earthed anyway as last time I checked two big rubber hoops dont conduct electricity that well!!
I've got an inferiority complex
But its not a very good one!
But its not a very good one!
Re: Jump start
I've used the car to jump the bike on occasions and have always had the car engine running and it's never caused a problem
Two bikes, still only four cylinders!
Re: Jump start
If you use the bolt or another point on the chassis, it adds resistance to the load. The higher the resistance, the lower the current that will flow. I'm only a trainee sparkie, so can't go more in depth than that, but I think that's why.
Re: Jump start
Ive jumped my old FS plenty of times due to a battery drain caused by a corroded connection to the starter.
Used a portable battery pack, didnt seem to be a problem
Used a portable battery pack, didnt seem to be a problem
ook
- turbo_billy
- Posts: 1192
- Joined: Mon Aug 29, 2011 3:01 pm
- Location: Churchdown, Glos
Re: Jump start
AMCQ46 wrote:You want a jump start..... Try moto2