No.
We are specifically talking about the Lucas C42 as used on the BJ8
A Lucas C42 generates 30 amps at 4,500 rpm.
It's fine.
Sent from my iPhone
> On 2 May 2017, at 6:48 pm, Oudesluys <coudesluijs at chello.nl> wrote:
>
> There you are, 26A at full house.
> How much does the generator generate? 20-25A if you are lucky.
> Kees Oudesluijs
>
>
>
> Op 2-5-2017 om 7:34 schreef Roger Grace:
>> Given the endless discussions on this topic, thought it would be useful to
>> remind myself and any others who are interested in the major differences
>> between alternators and generators
>>
>> In a gen. the heat generated is in the rotating armature that is on the
>> inside of the enclosure and this is why cooling is important/difficult and
>> the fan on the pulley provides this through the
>> enclosure. The brushes on a gen work hard and switch full current several
>> times per rev. hence the wear and sparking. Gen usually has an oilite
>> bearing at the rear that also wears. This is a critical component as wear
>> (dry no oil) could eventually lead to scraping of the armature on the field
>> poles and throwing of lead at comm. Take care of your brushes, bronze bush
>> and bearings and you will have a reliable gen.
>>
>> An alt. is inverted with the main winding on the outside (easier to cool
>> hence more output) and the field on the inside; hence the shape - larger
>> diameter and shorter. No mechanical commutator switching needed as this is
>> done by diodes. Slip ring brushes feed low dc amps to the internal rotating
>> field - that last almost forever. Alt usually have more reliable front and
>> rear rotor bearings and less rotational weight as the main windings are on
>> the stator and thus more mechanically robust than a gen.
>>
>> The discussions here also confuse me about the amps needed for our cars. I
>> am with Chris on this one and wonder why you would need an 80 amp alt ?? !!
>> Unless you run an extra 2 spots for long periods you likely don?t need the
>> hi output of an alternator rather the mechanical reliability and the
>> improvement of eliminating the mechanical regulator.
>> Lets say headlights at 55W each; 5 amps for ignition and auxiliaries; 3 amps
>> for side lights (convert these plus brake lights to LED?s to lighten your
>> load); blower at 3 amps; wiper at 5 amps; OD 1 amp as worst case continuous.
>> This gives a total of around 26 amps full house driving at night in the
>> Winter and raining ! Intermittent loads are horn, brake lights, indicators.
>> etc.
>>
>> No doubt one day will convert to an alt but it would likely be to eliminate
>> the awful cheap non adjustable regulator that I had to purchase after my 50
>> year old Lucas one failed.
>> rg
>>
>>
>> From: Chris Dimmock
>> Sent: Monday, May 1, 2017 6:42 AM
>> To: Simon Lachlan
>> Cc: Healey List
>> Subject: Re: [Healeys] Dynalite or which alternator to C42 Generator
>>
>> The funniest thing I find about the "alternator inside a generator"
>> conversions is the bloody pulley. It might look like a generator body - but
>> you have to run a tiny pulley, because it needs a
>> bucket load of revs to generate didly squat, more than a generator.
>> Any good Lucas generator runs a Larger pulley - because it generates enough
>> amps and stuff at low revs. Seriously men. Who revs their car past 5,000 rpm
>> on the road?
>> I run a C42 with a bigger DWR Pulley.
>> That means I'm slowing down the old Lucas C42. Because it already generates
>> enough power.
>> Ok. I'm not running a 1,000 watt sound system or 4 IPods, and a grille full
>> of spotlights. FFS - it's a Healey!!
>> So if you run one of these alternator inside a generator silly things, it's
>> a joke. You've got a fake, compromised alternator. Immediately identified by
>> the pulley. An alternator needs air for cooling. A generator casing doesn't
>> provide that.
>> Run one or the other. Generator or alternator. I've got no issue if you run
>> an alternator. Run a good, sensible, reliable one.
>> Nearly as stupid as putting a disc brake inside a brake drum. Same issue.
>> Innovative- but it doesn't work unless all you do is drive to a coffee shop.
>> Simon. Just get a C42 and return the core when you get back.
>> Best Chris
>> Being Grumpy about modern shit.
>>
>>
>> Sent from my iPhone
>> On 1 May 2017, at 3:54 am, Simon Lachlan <simon.lachlan at homecall.co.uk>
>> wrote:
>>
>>> My nephew?s generator issues may resolve themselves soon. May??.
>>>
>>> We may look at replacing the C42 in his BJ8 with an alternator, one of the
>>> generator lookalikes.
>>>
>>> Dynalite is one of the names I?ve come across, as sold by Holden?s. The
>>> Usual Suspects don?t seem to give their lookalikes their brand names.
>>>
>>> Anyhow, I know this topic came up a few months back, but I wasn?t
>>> interested then! So:-
>>>
>>> Does anyone have experience of these things?
>>>
>>> Is any brand better than another??
>>>
>>> Etcetc.
>>>
>>> Holden?s claim 45amps for theirs. AHSpares claim 50amps. A BJ8?s C42
>>> generator kicks out 30amps max. It seems that one does need the BIG fuse in
>>> the Dummy Control Box. When I put in my alternator, a Lucas ACR, I put in
>>> an extra cable to carry the extra amps??.apparently if the alternator is
>>> really belting out the amps, the old wiring is a bit marginal.
>>>
>>>
>>>
>>> Any other thoughts?
>>>
>>> Kind advice to the effect that putting more modern electrics in our old
>>> bangers is streng verboten is unnecessary at this time.
>>>
>>>
>>>
>>> Thanks,
>>>
>>> Simon
>>>
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