[Healeys] Alternator Pulleys

[Michael Salter]

Real Healeys don't have alternators 🤣🤣🤣

On Tue, Aug 13, 2019, 1:45 PM Roger Grace, <roggrace at telus.net> wrote:

> In any event, unless you are doing significantly more idling than driving
> this drawdown duning idling is not really significant. This is what the
> battery is for. If you had an ammeter you would see the amps pick up after
> idling to bring the batt back up to full volts.
> Of couse you need a good batt, and alternator.
> rg
>
> ----- Original Message -----
> From: R. Lindsay <050.rpl at gmail.com>
> To: Tom McCay <Tom.McCay at ccw-tools.com>
> Cc: pbrauen at gmail.com, Healey List <healeys at autox.team.net>
> Sent: Mon, 12 Aug 2019 16:59:08 -0600 (MDT)
> Subject: Re: [Healeys] Alternator Pulleys
>
> Thank you!
>
> Price Lindsay
>
> Cell: 630-841-6300
> Email: 050.rpl at gmail.com
>
> Sent from my iPhone
>
> > On Aug 12, 2019, at 6:39 PM, Tom McCay <Tom.McCay at ccw-tools.com> wrote:
> >
> > Hi Price, alternators do not kick in until they are rotating at about
> 1200 alternator RPM. The pulley ratio is approximately 3:1 when comparing
> the bottom crank pulley to the alternator pulley. At idle of 800 RPM the
> alternator would be rotating at 2400 RPM so you should have a good output
> at idle. The smaller the alternator pulley the faster it will spin.
> >
> > Kindest regards
> >
> > Tom McCay
> > Director
> > www.ccw-tools.com
> > Tel: 01522 888178
> > ________________________________________
> > From: Healeys [healeys-bounces at autox.team.net] On Behalf Of R. Lindsay [
> 050.rpl at gmail.com]
> > Sent: 12 August 2019 23:19
> > To: warthodson at aol.com; pbrauen at gmail.com; Healey List
> > Subject: [Healeys] Alternator Pulleys
> >
> > I have installed an alternator in my BJ8 to support ac with mixed
> success. Since our cars use a v-belt system I had to replace the pulley
> that came with the alternator(serpentine) with a v-belt pulley.  I have
> checked the power the alternator and at idle, it is below the amperage
> needed to run the equipment I have installed.
> >
> > When I look at the circumference of the v-belt pulley and the serpentine
> pulley, the v-belt is definitely smaller. Should I use a v-belt pulley of
> similar size?  Increasing the circumference of the pulley will make the
> alternator spin faster and maybe solve my issue of slow engine speed/low
> amp output, I think.
> >
> > If my thinking is correct, how big of a pulley should I use?  I presume
> that if the pulley is too large, it may make the alternator produce too
> many amps and damage it.  Should I match the size of the serpentine pulley
> or buy a pulley based on a calculation?  (FWIW, I have no
> knowledge/experience to do this).
> >
> > The pulleys on the crank and water pump are standard Healey. There is ac
> installed and the pulley on the compressor is larger than the old
> generator. I have a two belt system so the alternator is belted to the
> compressor which if what I said above about larger pulleys spin their
> equipment faster, how should this be accounted for?
> >
> > I may be over thinking this but I would like to run the ac at a
> reasonable idle. Has anyone approached this and came up with a resolution?
> >
> > Thank you so much for any light that can be shed on this.
> >
> > Price Lindsay
> >
> > Cell: 630-841-6300
> > Email: 050.rpl at gmail.com
> >
> > Sent from my iPhone
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> >
> >
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