fot
[Top] [All Lists]

[Fot] Battery size, was Re: Oversize alternator pulley source

Subject: [Fot] Battery size, was Re: Oversize alternator pulley source
From: duncan.charlton54 at gmail.com (Duncan Charlton)
Date: Sat, 1 Jul 2017 06:26:48 -0400
References: <15cf64cd177-1de3-6ece@webprd-a61.mail.aol.com> <2FE50B41-AD66-48C0-AD4B-D74AA6006806@ponostyle.com> <DM5PR1101MB23308E3884ECDFE0A66F582C9DD30@DM5PR1101MB2330.namprd11.prod.outlook.com> <AD3968B8-952F-479D-93D1-5520C1BD63B6@gmail.com>
Anybody know how much current a typical cool suit pump uses?

Duncan
(Texas)


> On 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
> 
> 
>> Elon? Is that you? Drove one of your cars the other day....nice.
>> 
>> Sent from my iPhone
>> 
>> 
>>> 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?
>>> 
>>> 
>>>> 
>>>> What is the size of the shaft on the Denso ??
>>>> 
>>>> Curious,
>>>> 
>>>> Bob T
>>>> stom make? Thanks
>>>> >_______________________________________
>>>> 
>>>> 
>>>> 
>>>> -----Original Message-----
>>>> 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/sum-g3969/overview/>
>>>> https://www.summitracing.com/parts/pwm-182/overview/ 
>>>> <https://www.summitracing.com/parts/pwm-182/overview/>
>>>> https://www.summitracing.com/parts/mor-64800/overview/ 
>>>> <https://www.summitracing.com/parts/mor-64800/overview/>
>>>> 
>>>> basically, search for "alternator pulleys" on www.summitracing.com 
>>>> <http://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
>>>> >_______________________________________________
>>>> >
>>>> >http://www.fot-racing.com <http://www.fot-racing.com/>
>>>> >
>>>> >Donate: http://www.team.net/donate.html <http://www.team.net/donate.html>
>>>> >Archive: http://www.team.net/archive <http://www.team.net/archive>
>>>> >Forums: http://www.team.net/forums <http://www.team.net/forums>
>>>> >Unsubscribe/Manage: 
>>>> >http://autox.team.net/mailman/options/fot/tony at tonydrews.com 
>>>> ><http://autox.team.net/mailman/options/fot/tony at tonydrews.com>
>>>> 
>>>> 
>>>> _______________________________________________
>>>> 
>>>> http://www.fot-racing.com <http://www.fot-racing.com/>
>>>> 
>>>> Donate: http://www.team.net/donate.html <http://www.team.net/donate.html>
>>>> Archive: http://www.team.net/archive <http://www.team.net/archive>
>>>> Forums: http://www.team.net/forums <http://www.team.net/forums>
>>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/robertten1 
>>>> at aol.com <http://autox.team.net/mailman/options/fot/robertten1 at 
>>>> aol.com>
>>>> 
>>>> 
>>>> _______________________________________________
>>>> 
>>>> http://www.fot-racing.com <http://www.fot-racing.com/>
>>>> 
>>>> Donate: http://www.team.net/donate.html <http://www.team.net/donate.html>
>>>> Archive: http://www.team.net/archive <http://www.team.net/archive>
>>>> Forums: http://www.team.net/forums <http://www.team.net/forums>
>>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/bill at 
>>>> ponostyle.com <http://autox.team.net/mailman/options/fot/bill at 
>>>> ponostyle.com>
>>>> 
>>>> 
>>> 
>>> _______________________________________________
>>> 
>>> http://www.fot-racing.com <http://www.fot-racing.com/>
>>> 
>>> Donate: http://www.team.net/donate.html <http://www.team.net/donate.html>
>>> Archive: http://www.team.net/archive <http://www.team.net/archive>
>>> Forums: http://www.team.net/forums <http://www.team.net/forums>
>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/explore8 at 
>>> outlook.com <http://autox.team.net/mailman/options/fot/explore8 at 
>>> outlook.com>
>>> 
>>> 
> _______________________________________________
> fot at autox.team.net
> 
> http://www.fot-racing.com
> 
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe/Manage: 
> http://autox.team.net/mailman/options/fot/duncan.charlton54 at gmail.com
> 
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: 
<http://autox.team.net/pipermail/fot/attachments/20170701/3316a86f/attachment.html>

<Prev in Thread] Current Thread [Next in Thread>
  • [Fot] Battery size, was Re: Oversize alternator pulley source, Duncan Charlton <=