Cummins Drift Truck a la Dum-Dum

[Chris306]

24v starter system seems the easier simpler cheaper version to me. Might be wrong but the amps drawn from a 12v starter to turn an engine that size are goin be high enough to start melting wiring and knackering starters an battery's. Don't some of the old merc diesel cars run a 24v starter relay system.

Easier, simpler and cheaper in what world?

Running complex wiring for the 12/24v switch and finding space to fit a second battery isnt easy
Again wiring in the 12/24v switch isn't the simplest thing on earth
And as for cheaper the 12/24v switch is £130 plus another battery for £100 and then all the extra length of battery cables will add up to as much if not more than rewinding of having a custom built starter at £200-£300 (I've already had quotes)

As for enough amps to melt wiring have you not seen my maths earlier in this thread. Feel free to check the formula yourself but essentially 4kw starter divided by 12v is 333amps of current draw. Most decent batteries will provide at least 500amps of starting power.

As for old Mercs I don't know and don't care, it's a wiring, financial and packaging complexity that I don't want or need as it will work on 12v as lets not forget some of these engines DO run a pure 12v system.

Bit over defensive but whatever, space isn't really an issue its a pickup, how is the wiring to complicated when Darren's already done it himself and has told you how to do it?, and cheaper yes 12v24v switch 130 plus battery 100 is 230, you've been quoted between 300 and 400.

Can't see why you'd be messing about getting one rewound when a LRB 381 Transit alternator fits with the vac pump on the back of it and 12v starter from a daf 45 non turbo fits with 10mm of spacing out.

And yes you've done your maths but if you think that 500 cca are goin to turn a cummin 6bt at a decent pace then obviously it isn't me that's not in reality