mick750 Posted February 27, 2011 Report Share Posted February 27, 2011 my brothers girlfriend has a newish sv650 with a flat battery shes been told it cant be bumped started why not ? Link to comment Share on other sites More sharing options...
lorenzo Posted February 27, 2011 Report Share Posted February 27, 2011 Bacause twins are a nightmare to bump start. A couple of hefty blokes, one to push it and one to jump onto the seat as he lets the clutch out could sort it, but the chances are you'll just lock the back wheel up unless you're good at it. Link to comment Share on other sites More sharing options...
gregtrx Posted February 27, 2011 Report Share Posted February 27, 2011 I tried bump starting a big trailie with an automatic decompressor once. It didn't go well. Link to comment Share on other sites More sharing options...
Kayla Posted February 27, 2011 Report Share Posted February 27, 2011 I once, and once only, tried to bump start my TRX :lol: :lol: :lol: :lol: Link to comment Share on other sites More sharing options...
Evilchicken0 Posted February 27, 2011 Report Share Posted February 27, 2011 MDS batteries deliver Link to comment Share on other sites More sharing options...
thefatman Posted February 27, 2011 Report Share Posted February 27, 2011 Its a bit harder bump starting a fuel injected bike as you need to prime the fuel pump and injectors first of all which means pushing for that bit longer. If you've got two people one to sit on the bike, one to push then you might manage it. Try second gear first, third if that keeps locking up and sit well back on the seat. Link to comment Share on other sites More sharing options...
Marb Posted February 27, 2011 Report Share Posted February 27, 2011 Or jump start it with a car. Link to comment Share on other sites More sharing options...
lorenzo Posted February 27, 2011 Report Share Posted February 27, 2011 To be honest, I'd save your money on the yuasa and get a gel battery instead, they survive being left for long periods better than a traditional lead acid battery and they will always provide better cold cranking power too. The only disadvantage is that a lead acid battery survives being over-charged a little better, plus gel tends to be a bit pricier. If you're thinking about a yuasa gel battery then you've got more money than sense. Link to comment Share on other sites More sharing options...
mick750 Posted February 27, 2011 Author Report Share Posted February 27, 2011 the battery was taken off the bike before she put it away so its ok when she bought the bike the salesman told here to not bump start it and i dont understand why ? is it just because its a twin ? Link to comment Share on other sites More sharing options...
lorenzo Posted February 27, 2011 Report Share Posted February 27, 2011 The battery will still lose charge if it's on the bike or off, it just loses charge. Link to comment Share on other sites More sharing options...
mick750 Posted February 27, 2011 Author Report Share Posted February 27, 2011 The battery will still lose charge if it's on the bike or off, it just loses charge. ye me and brother told her that but she wouldnt listen ! Link to comment Share on other sites More sharing options...
Kayla Posted February 28, 2011 Report Share Posted February 28, 2011 the battery was taken off the bike before she put it away so its ok when she bought the bike the salesman told here to not bump start it and i dont understand why ? is it just because its a twin ? Must be true then... You can jump start a bike off a car, we've done it loads of times, just don't have the car running as has already been mentioned. If the bike battery is good, put it back in the bike and jump start it (positive on the battery, negative on the engine or somewhere else that's earthed). If all is well with the charging system on the bike a good run out should recharge it Link to comment Share on other sites More sharing options...
Kermit Posted February 28, 2011 Report Share Posted February 28, 2011 ^^^^^+1 My ZXR750 was a bugger to start unless the battery was 100%. I used to start it like Kayla said and never had any problems. I bump started my Laverda 750 twin once on my own (that's fuel injected) out of about 20 attempts. With someone else pushing as well it'd go no problem. Link to comment Share on other sites More sharing options...
bignige Posted February 28, 2011 Report Share Posted February 28, 2011 you need a hill and a fat man* * i'm busy today. Link to comment Share on other sites More sharing options...
gurninman Posted February 28, 2011 Report Share Posted February 28, 2011 To be honest, I'd save your money on the yuasa and get a gel battery instead, they survive being left for long periods better than a traditional lead acid battery and they will always provide better cold cranking power too. The only disadvantage is that a lead acid battery survives being over-charged a little better, plus gel tends to be a bit pricier. If you're thinking about a yuasa gel battery then you've got more money than sense. I thought Yuasa were expensive, then I bought one for my ZX9 (bought a Varta AGM one last year , and it's buggered) - £35 delivered for a Yuasa AGM battery They do keep their charge for longer, but I've found that once they're completely discharged, they're fucked - no recovering like a traditional lead acid battery Link to comment Share on other sites More sharing options...
Stewbie Posted March 2, 2011 Report Share Posted March 2, 2011 Mine's always been okay to do it with. Although I haven't bump started it in a traditional sense, I used my slave starter to do it. So much easier. Link to comment Share on other sites More sharing options...
ronenige Posted March 2, 2011 Report Share Posted March 2, 2011 Back in the day , as the kids say , I borrowed a BSA B50 with a speedway tune on the motor , was a right hoot till the bastard stopped on me , took about 8 years off my life starting it Anyhoo , if your gonna try bump starting it , it sometimes help to press the starter button at the same time as some bikes run a different ignition / injection cycle when cranking ( the bike that is ) Link to comment Share on other sites More sharing options...
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