Re: [EVDL] LED Taillights - a money saver in gas cars? - rangeextenderin EV's? - an a - DIY Electric Car Forums
Go Back  

DIY Electric Car Forums > External Information > EVDL List

Register Blogs FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 09-25-2007, 04:10 AM
EVDL List EVDL List is offline
EVDL List Bot
 
Join Date: Jul 2007
Posts: 70
EVDL List is on a distinguished road
Default Re: [EVDL] LED Taillights - a money saver in gas cars? - rangeextenderin EV's? - an a

Or LED:
http://fourtitude.rely.net/cgi-bin/artman/exec/view.cgi/6/1113/printer

-Phil
----- Original Message -----
From: "(-Phil-)" <xxx@xxx.xxx>
To: "Electric Vehicle Discussion List" <xxx@xxx.xxx.edu>
Sent: Monday, September 24, 2007 10:15 PM
Subject: Re: [EVDL] LED Taillights - a money saver in gas cars? -
rangeextenderin EV's? - an analysis


> Another interesting one is to switch to Xenon HID for the headlights. A
> HID
> bulb is 35w versus 55 or 65w, so that's a savings of a minimum of 40w!
>
> As an aside, they are brighter and if you won't see brightness fluctuate
> because of 12v voltage fluctuation or sag.
>
> -Phil
> ----- Original Message -----
> From: <xxx@xxx.xxx>
> To: <xxx@xxx.xxx.edu>
> Sent: Monday, September 24, 2007 9:40 PM
> Subject: [EVDL] LED Taillights - a money saver in gas cars? - range
> extenderin EV's? - an analysis
>
>
>> This file is saved at www.herringshaw.com/led.xls Let me know what you
>> think.
>> In building my Electric Car (88 Mazda getting the Solectria treatment) I
>> came across some LED taillight bulbs at Sherco-auto.com. You should
>> check them out - connectors and other stuff for good prices. ANYWAY, So
>> I wanted to see if there's a financial payback on these lights in a ICE
>> vehicle, assuming of course that these could extend the range on an EV at
>> night, which of course there is no price on!
>>
>> My car has 4 taillights, so I bought 4 @ $5 each (combo tail/Brake Light)
>> Check out the file to change numbers and see if you come up with
>> something
>> different - with my analysis, if you drive more than 12.5K miles/year
>> with
>> your taillights on, you'll have a 20% payback. Put that into Gasoline
>> instead of Diesel, it'll do even better. What do you think on the
>> efficiency #'s?
>>
>> If you have to change a bulb anyway, then this is a no-brainer, but fun
>> to
>> analyze anyway. Make sure your Lens color matches the LED color - Make
>> sure your bulb mount faces the bub toward the lens (not always the case,
>> as in my car, so the LEDs are going into the Golf)
>>
>> Assumptions - All in Green can be changed (download the file for
>> changeables)
>>
>> Conventional Taillight Bulbs 100 Watts 4@ 27W (maybe 27 is the brake
>> light, not the running light....)
>>
>> BTU/KWH 3414
>> BTU/Gallon 130000 Diesel
>>
>> Alternator Efficiency 70.00% [Turning Motion into Electricity]
>> Engine Efficiency 50.00% [Turning BTU's into Motive energy]
>>
>> $/Gallon 3
>> Cost of Bulbs $20.00 4 - 27W Equivalent Bulbs
>>
>>
>>
>> Taillights Used Per Hour
>> Watts used/hour 100
>> Efficiency Reduced Watts 285.71
>> BTU used /hour 975.43
>> Fuel used/hour 0.007503
>> $$/hour 0.022510
>>
>> Overall Vehicle
>> $/hour @ 48MPG (TDI Golf) 3.75
>> % of cost going to Taillights 0.60%
>>
>>
>> Hours needed to drive in 1 yr to reach 20% Rate of Return 177.70
>> Miles Driven @ 75 MPH 12438.98
>>
>>
>> _______________________________________________
>> For subscription options, see
>> http://lists.sjsu.edu/mailman/listinfo/ev
>>
>
> _______________________________________________
> For subscription options, see
> http://lists.sjsu.edu/mailman/listinfo/ev
>

_______________________________________________
For subscription options, see
http://lists.sjsu.edu/mailman/listinfo/ev
Reply With Quote
 

Share or Bookmark this

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

 
Support DIY Electric Car
Sponsors

All times are GMT -6. The time now is 10:42 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Ad Management by RedTyger