Tiercel 6,986 Posted October 17, 2016 Report Share Posted October 17, 2016 ? TC Quote Link to post Share on other sites
socks 32,253 Posted October 17, 2016 Report Share Posted October 17, 2016 I can't see how that can work ... if he has put the car in gear and started it and that wheel is turning why doesn't the other remaining drive wheel push the car off the jack ...... Quote Link to post Share on other sites
Tiercel 6,986 Posted October 17, 2016 Author Report Share Posted October 17, 2016 I can't see how that can work ... if he has put the car in gear and started it and that wheel is turning why doesn't the other remaining drive wheel push the car off the jack ...... The dif it puts the drive to the wheel with least resistance. TC 1 Quote Link to post Share on other sites
stealthy1 3,964 Posted October 17, 2016 Report Share Posted October 17, 2016 No, how did he start it with one wheel on the ground when it's front wheel drive? Quote Link to post Share on other sites
socks 32,253 Posted October 17, 2016 Report Share Posted October 17, 2016 No, how did he start it with one wheel on the ground when it's front wheel drive? That's what I was trying to get at ....... Quote Link to post Share on other sites
Tiercel 6,986 Posted October 17, 2016 Author Report Share Posted October 17, 2016 What he is saying is he bump starts it with the rope, because the wheel is off the floor it is the wheel that the diff transfers the drive to. If you go off the edge of the road and one wheel is in soft stuff, then all the drive is in that wheel and thats why the wheel spins and you get stuck. TC Quote Link to post Share on other sites
stealthy1 3,964 Posted October 17, 2016 Report Share Posted October 17, 2016 Don't think I've driven a car with a split diff on the front only, had 4x4's that have diffs in the middle, or maybe I just drive shite motors. Quote Link to post Share on other sites
king 11,972 Posted October 17, 2016 Report Share Posted October 17, 2016 Yea cant see why that wouldnt work. And as tiercel said about the diff is spot on. I remember a lad showing me a trick before how to charge a flat car battery. He had a diesel car. Started the car.removed the battery and put a flat battery on the car wbile running.letting the alternator charge the flat battery. The car didnt stop running with no battery as it was a diesel. Obviously wouldnt work with a petrol engine as that needs a spark to keep running. 1 Quote Link to post Share on other sites
Tiercel 6,986 Posted October 17, 2016 Author Report Share Posted October 17, 2016 Don't think I've driven a car with a split diff on the front only, had 4x4's that have diffs in the middle, or maybe I just drive shite motors. If your cars do not have a diff how do you turn corners in them without ripping your tyres to shreds. (Outside wheel is travelling further than the inside wheel.) All cars have diffs they have to, 4x4's have more than one. TC 1 Quote Link to post Share on other sites
rob284 1,682 Posted October 17, 2016 Report Share Posted October 17, 2016 It wouldn't start a car that has abs though, because traction control would kick in wouldn't it? Quote Link to post Share on other sites
Tiercel 6,986 Posted October 17, 2016 Author Report Share Posted October 17, 2016 (edited) It wouldn't start a car that has abs though, because traction control would kick in wouldn't it? My understanding of ABS is that under braking when one wheel stops a set of valves releases pressure allowing the wheel to turn so that you are able to steer. Traction control is a electric type of limited slip differential, today's T C uses the same sensors as the ABS but in a different way. The ABS uses the sensors for stopping but the T C uses them to give you grip when travelling. What the outcome of trying that on a car with T C would be is beyond my knowledge. Edited too add: Just having a think about it and your right, the T C would send a message to the brain that all is not right and the brain would send drive to the other wheel. TC Edited October 17, 2016 by Tiercel Quote Link to post Share on other sites
jacknife 2,005 Posted October 17, 2016 Report Share Posted October 17, 2016 Yea cant see why that wouldnt work. And as tiercel said about the diff is spot on. I remember a lad showing me a trick before how to charge a flat car battery. He had a diesel car. Started the car.removed the battery and put a flat battery on the car wbile running.letting the alternator charge the flat battery. The car didnt stop running with no battery as it was a diesel. Obviously wouldnt work with a petrol engine as that needs a spark to keep running. It does work with petrol engines.....the revs normally drop when the battery is disconnected Quote Link to post Share on other sites
king 11,972 Posted October 17, 2016 Report Share Posted October 17, 2016 Yea cant see why that wouldnt work. And as tiercel said about the diff is spot on. I remember a lad showing me a trick before how to charge a flat car battery. He had a diesel car. Started the car.removed the battery and put a flat battery on the car wbile running.letting the alternator charge the flat battery. The car didnt stop running with no battery as it was a diesel. Obviously wouldnt work with a petrol engine as that needs a spark to keep running. It does work with petrol engines.....the revs normally drop when the battery is disconnected Ah right it was yrs ago.The petrol engines had rotor arms and distributor caps then. Dont know if that made a difference to todays cars. Quote Link to post Share on other sites
Greyman 28,236 Posted October 17, 2016 Report Share Posted October 17, 2016 Feck all that nonsense I just get my starting handle out, 4 Quote Link to post Share on other sites
neil82 1,075 Posted October 17, 2016 Report Share Posted October 17, 2016 It wouldn't start a car that has abs though, because traction control would kick in wouldn't it? they are two separate systems, but any car new enough to have them fitted would not start this way if it had a dead battery, there would not be enough power to fire the fuel injectors let alone generate a spark Quote Link to post Share on other sites
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