[Fot] Oversize alternator pulley source

[John Styduhar]

Bill, could I use my Denso alternator setup to charge the LiPos or what
charging system is required?​


On Sat, Jul 1, 2017 at 1:32 AM, Bill Babcock via Fot <fot at autox.team.net>
wrote:

> More realistically:  Typical single cell lipo is 3.7V nominal, 4.3 V fully
> charged so four cells in series is nominally 14 to 16. Volts, which makes
> electronic ignition systems much happier than the 12.5 volts of lead acid
> batteries. A typical little battery for a RC model is 5000mah (or 5AH in
> more normal parlance) and it's a little smaller than a pound of butter.
> While one of them might actually crank your motor, five or six is a better
> bet. I had ten handy that I'm no longer using (new drone) so I put them
> together for peyote. 50AH, 1000Amps of cranking current. If I ever draw
> that my starter wire will probably vaporize, but the starter spins briskly.
> pertronix ignition at 6000 rpm draws five amps. So eight to ten hours of
> running flat out. That's the biggest load by far unless you're running an
> electric water pump.
>
> People's bad experience with total loss has to do mostly with lead acid
> batteries. Electronics are generally designed to run at alternator voltage
> of 14V. With typical voltage drop an LA battery might drop to 11V at full
> load. LiPos start with a higher voltage and don't droop as much, so
> everything works better.
>
> Sent from my iPad
>
> On Jun 30, 2017, at 8:00 AM, D V <explore8 at outlook.com> wrote:
>
> Elon? Is that you? Drove one of your cars the other day....nice.
>
> Sent from my iPhone
>
> On Jun 30, 2017, at 5:30 AM, Bill via Fot <fot at autox.team.net> wrote:
>
> You know, these days I could build a battery that would power any race car
> for a couple of weeks and weigh fifteen pounds. Why would I bother charging
> it?? It’s 2017. I made a battery recently that lets me weld aluminum. I can
> put it in a lunchbox. Alternator, really? Why?
>
>
> On Jun 29, 2017, at 5:00 PM, Bob Totten via Fot <fot at autox.team.net>
> wrote:
>
> What is the size of the shaft on the Denso ??
>
> Curious,
>
> Bob T
>
> stom make? Thanks
> >_______________________________________
>
>
>
>
> -----Original Message-----
> From: Tony Drews via Fot <fot at autox.team.net>
> To: John Styduhar <johnstydo at gmail.com>; Triumph 'Friends of Triumph <
> fot at autox.team.net>
> Sent: Thu, Jun 29, 2017 3:48 pm
> Subject: Re: [Fot] Oversize alternator pulley source
>
> I'm not sure of the shaft diameter on the Denso
> alternator, but here's a couple of
> possibilities. I think I'm running the first one.
> https://www.summitracing.com/parts/sum-g3969/overview/
> https://www.summitracing.com/parts/pwm-182/overview/
> https://www.summitracing.com/parts/mor-64800/overview/
>
> basically, search for "alternator pulleys" on www.summitracing.com
>
> Regards, Tony Drews
>
> At 09:20 AM 6/29/2017, John Styduhar via Fot wrote:
> >I'm running a single groove Denso 55A alternator
> >(Lester No. 14684) in my TR racer. Pulley OD
> >is 2 11/16". Does anyone know where to buy a
> >larger diameter pulley for this unit or will I have to custom make? Thanks
> >_______________________________________________
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> >
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