HID vs. LED

[DANIEL T CONWAY PREMIUM-USA]

Hey guys,
Right now, converting to HID (High Intensity Discharge ) Lamp, is going to be easier
 to find, and will provide better illumination, and does use less energy per Lumen.
Since it is a mature technology.

These are fairly easy to find for most bulb types, and less than a pound in weight....
Ebay has many , but the quality varies greatly as does the technology used
and if they are Licensed and/or DOT approved.
One of our Chinese partners is working on a point source LED that is optically correct, its' a DOT thing,
 for the reflector used on your vehicle's headlight assembly.  We are getting close, but the price..  OOO..
The Problem with LEDs are two fold: the cooler the run, the more efficient they are; and voltage regulation is key..
We make all the bulbs on a vehicle, except High Intensity Headlights , like a CREE Module..
A std headlight uses an incandescent 55watt bulb, an efficient 6 watt LED if cooled would do it..
Currently 3 watts are getting reasonable, 5 watts are not however..



THX..
            Daniel T "Bubba" Conway

Premium-USA


Date: Sun, 18 Oct 2009 12:09:15 -0700
From: Ken Potter <ken@...>
Subject: [Oeva-list]  Looking to improve a 48V machine
To: oeva-list@...
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Looking for advice:

My project is on the road and doing fairly well:  48V Motorcycle using 4 AGM
batteries @ 50 AH each, and an identical 5th battery for the 12V needs (the
two systems are separate except for the 12V contactor).  The controller is
an Alltrax AXE, set to 70% maximum power.  The motor is a Mars ME0708
Brush-Type, Permanent Magnet DC motor, also known as the Etek-R.

*Here are the issues*:  As usual, extending the range a few more miles is a
priority.  At the same time, just a little more power would be welcome for
climbing hills at moderate speeds.

*Here are some options:*  I have one more identical battery, and I'm tempted
to go up to 60V, adding 50 AH at the same time (but exceeding the rating of
the motor).  Another possibility is just reprogramming the controller to 80%
of max and switching to larger batteries (groan).  A third, and less
expensive option, is to add a small DC-DC converter, eliminate the accessory
battery, and save about 30 lbs.  By law, the headlight must remain on at all
times.  A good LED headlight would improve matters, so the search is on.

Any thoughts?
Ken Potter
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