Bongo Fury

can anyone tell me the output of the alternator

Wasn't this already answered for you by Mr. Munkey in this thread - http://www.igmaynard.co.uk/bongo/forum/ ... or#p300423

That was more about leisure batteries Kirsty. The alternator is rated at 90 AH.

Indeed Kirsty.

From memory its around 2.1kw, well up to the job.

I think the winter pack alternators pump out 2.2kw, the regular ones are 2.0.

what is this winter pack thing

When I bought my replacement alternator it was rated at 90Ah, I'm a little confused as to the mention of 2 or 2.2Kw, surely 90 x 14.4v = 1296w?

Steve

Battery capacity is measured in AmpHours (AH) and is typically 95AH for the Bongo starter battery, alternators are normally rated by KW or Amps. The Bongos alternator has a 90Amps rating.

So, does that mean, just shy of an hours running would charge a starter battery from flat? and if you had, say, an 85AH leisure battery, 2 hours to charge both that and starter batt from scratch?

peanutcrusher wrote:what is this winter pack thing

The winter pack is for the bongos from the north of japan where its minus double figures, so the bongos have a diaphram in the exhaust, 2 batteries as standard working in parallel, and a switch near your right knee with a picture of an engine with squigly lines on.

You turn on the switch the diaphram shuts causing the engine to work harder and warm up quicker, but because they have 2 batteries running in parallel to give it more cranks and amps it has a more powerfull starter motor and alternator to deal with it.

Its not needed in this country and can cause more problems than its worth, i have just pulled the conector block out of the back of the switch so not to turn it on by mistake as it has a tendancy to stick shut so most of us have used it to do a leisure battery set up using the willinton split charge set up.

Not quite, the 90 Amp is the Max current the alternator can provide, that's not to say it will be the charging current.

The current is determined by the difference between the output voltage of the alternator and the voltage of the battery divided by the total resistance in the circuit, the total resistance is not fixed and has three separate components the fixed internal resistance of the alternator, the fixed resistance of the wiring, fuses and connectors (pretty small) and the internal resistance of the battery - this is the bit that varies along with the voltage of the battery. Typically for a fully charged battery then you would expect maybe 0.1 to 2 Amps as the charging current, after starting the engine, once, you can expect a peak current of maybe 60 Amps but it varies a lot, but this will reduce rapidly back down to less than about 1 Amp after about 20 minutes. Any other load you have on the supplies will come from the alternator whilst its generating, so it might be supplying another couple of amps to the vehicle to about 12-15 amps with the headlights on.

Do the winter packs have in tank heaters?

If so couls you get one to fit a non cold pack bongo?

jez

mister munkey wrote:

From memory its around 2.1kw, well up to the job.

I think the winter pack alternators pump out 2.2kw, the regular ones are 2.0.

These figures are for the starter motor, standard and winter pack.