On Mon, 25 Feb 2008 09:34:39 -0000, "Julian" <[EMAIL PROTECTED]> wrote:
> >"Allan Cazaly" <[EMAIL PROTECTED]> wrote in >message news:[EMAIL PROTECTED] >> There is a third way, which is my installation spec\:- >> >> My engine is the standard Beta 43 (BV1903 Kubota) >> I have a 100 amp x 24 volt alternator with an extra large pulley on >> the engine main shaft. (and the usual 12 v x 45 amp alternator for the >> starter battery): I also have a 3-kw Powermaster combi-inverter. This >> seems to load the engine well. I am told (By Beta engineers) that when >> a 240 heavy demand is applied (I have several items) and the >> batteries need charging, the alternator uses aprox., one third of the >> power output from the engine. Whether this is factual or not, I cannot >> confirm but tend to believe what I have been told from Beta.. > >Sorry Beta are talking rubbish >just do the maths. > >100 amp alternator at 24v will give 2.4kw >1 kw = 1.3hp >2.4kw = 3.2hp >so unless you have a 10hp engine they are telling porkies. > >If you have a 40hp engine you would need somewhere in the region of a 500amp >alternator to take one third of the engine power! > > >don't you just love it when people believe what a salesman tells them ;-0 > >Julian Even if you add the efficiency of the alternator say 50% therefore doubling these numbers it still does not make sense! I totally agree -- Richard "Poundeater" will apparently have a name change at some point in the future. However it will live on as an email address!
