LED Headlight Bulbs

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Matt Kirsch
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Re: LED Headlight Bulbs

Postby Matt Kirsch » Wed Jan 06, 2016 3:30 pm

Where have you seen PAR36 LED units in 6 Volt?

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Urbish
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Re: LED Headlight Bulbs

Postby Urbish » Wed Jan 06, 2016 5:44 pm

Matt Kirsch wrote:Where have you seen PAR36 LED units in 6 Volt?


Per my earlier post in this thread; these are PAR36 LED assemblies in 6 VDC: http://www.ledtronics.com/Products/prod%20...%20ED%20Bulbs

However, they are narrow beam spotlights. So I think I'll keep looking.

Jim

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Re: LED Headlight Bulbs

Postby bob in CT » Wed Jan 06, 2016 5:44 pm

Matt Kirsch wrote:Where have you seen PAR36 LED units in 6 Volt?


Only 4 watts. Can't beat that!

skwimjim wrote:I found these: http://www.ledtronics.com/Products/prod ... ED%20Bulbs They're 25º throw spotlights though. Hmmm.

Right above the specs, it says "Indoor Applications only like Downlights, Spotlights." Might not be what we need for a Cub.

Bill

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Re: LED Headlight Bulbs

Postby bob in CT » Thu Jan 07, 2016 9:42 am

skwimjim wrote:
Matt Kirsch wrote:Where have you seen PAR36 LED units in 6 Volt?

Per my earlier post in this thread; these are PAR36 LED assemblies in 6 VDC: http://www.ledtronics.com/Products/prod%20...%20ED%20Bulbs
However, they are narrow beam spotlights. So I think I'll keep looking.Jim


12 volt has better options, including flood and trapezoid. Glad I had no generator at all with my 1950. Made it an easy decision to put in a modern 12 volt system right from the start, which will include a couple of PAR36 trapezoidal beams and probably red and daylight LED bulbs for the rear worklight.

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Re: LED Headlight Bulbs

Postby inairam » Wed Jan 04, 2017 8:53 pm

I was not sure this would work at 6 volts but I purchased 1 of the https://www.larsenlights.com/par-36-45- ... lood-light flood light for $30
stated specs use 1.19 amp @ 12V – 14 watt life 30000 hours color 6000 for a test. I needed to replace lights in a 12 volt cub anyway.

Here is my patent pending Cub light test chamber
testchamber.gif


Since we are all friends and I will give you a look inside at the sensor for the light meter
insidetextchambe.gif
Do not share until my patent gets approved!

I took 3 readings of the LED light and a used GE 4411 light at 6v 6 Amp, 12 v 2 amp, & 12 V 6 amp using the battery charger I from my electrolysis tank
settings.gif


I recorded the reading in foot candles and not lux because I was having trouble reading the change in scales between the lights while trying to make the connections on the light. If you are metrically inclined multiple the numbers by 10.7639 to get LUX. (The difference between the units lumen and lux is that the lux takes into account the area over which the lumen are spread. Same with candle power and foot candles)

Results

LED GE4411 Difference per light
6v6 A 1035 300 345%
12v2 A 1536 670 230%
12v6A 1852 1500 123%
color 6000K 3000 a little brighter than daylight
cost $30 $5-7 4-6 x times
life 30000 300 100 x times
amps* .5-.75 ~ 2 25%-40% (3 x times the current saving per Cub)

*From meter on charger


reference
LED 18Watt CREE LED 6 x 3W/PC Operating Volt: 10-30Volt DC. Lumen :1260 Effective . Power use: 1.19 amp @ 12V – 14 watt . Color 6000K
GE 4411 12 v 35 Watt 3 amps $5-7Â 300 hours 3000 candle power color 3000K
GE 4511, 6 v 30 watt, 6 volt, 5 amps 2300 candle power .0 5 amp

lights.gif

Conclusions:
1) The Larsen lights are the cheapest LED par 36 I could find rated for outside tractor use
2) 5 times the cost for 2 times the light 100 x the life and 1/3 the current draw
3) They do work at 6 volts :{_}: but they are sensitive to polarity :( I did not test the light levels against a proper 6 volt bulb but it still should be 2-3 times as brights with the advantage on the current draw being even better. I emailed Larsen asking it there are any issues operating the light at 6 volts but they just said it would not work. So no idea if it will impact the life of the unit
4) The LED uses a blade connector. You could add a screw and nut to make the Y connector in the light fixture work but I chose to replace the connector in the fixture.

next step is to try it in a pancake fixture and see if it fits and live test on a cub at 6 volt. It should fit given that the the LED is not as deep as the GE 4411
When you only have 9 horsepower you need to know the names of all of the ponies!

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Re: LED Headlight Bulbs

Postby Urbish » Thu Jan 05, 2017 6:04 am

Excellent DIY Compar-o-meter! https://blog.hemmings.com/index.php/2016/05/06/from-the-toolbox-episode-five/

Thanks for doing this experiment and write-up. I too am curious to see how they hold up at 6V.

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Re: LED Headlight Bulbs

Postby inairam » Fri Jan 06, 2017 11:12 am

UPDAtE/ Correction.

I have been having an email conversation with Kenny Larson of Larson Lights. He said the factory did a test and they could not get it to light at 6 volts.

I put a meter on the battery charger and with no load I was getting just under 8V with load ( the light) is went to just under 9 volts on the 6v 6 amp setting. I should have thought of this when I did the test

We have a variable control power supply ( 120 V/ 230 in 0-230 out) at work. I lowered the input voltage to the battery charger and the light cut out when the battery charger was reading just under 8 volts which I think is above the voltage of the Cub 6v charging system.

I got a little ahead of myself about it working at 6 volts. The rest of the info is still good since both lights received the same voltage.

Like my signature says "when you only have 9 hp you have to know the names of all of the ponies". If you only have 6 volts you have to keep track of all of the watts ( volts and amps)
When you only have 9 horsepower you need to know the names of all of the ponies!

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Re: LED Headlight Bulbs

Postby Urbish » Fri Jan 06, 2017 12:22 pm

Thanks for the update. How do they work at 230V? Can you see what's happening on Jupiter? :-D

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Re: LED Headlight Bulbs

Postby UK-Cub » Fri Jan 06, 2017 1:37 pm

Like me, a friend has a Land Rover and recently gave me a demonstration of his new LED headlights.

They were impressive, as lights, but he said, as they run cool they don't burn off snow and so any build up calls for a stop and clean off.

Just a thought as it's clearing snow you're doing with your Cub.
David

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Re: LED Headlight Bulbs

Postby LRiddle » Fri Jan 06, 2017 11:51 pm

I bought the ones inairam suggested in the link and I love them. Not much brighter, but they are whiter and draw next to nothing on the battery.

viewtopic.php?f=1&t=93914
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Re: LED Headlight Bulbs

Postby LRiddle » Fri Jan 06, 2017 11:56 pm

A picture of the LEDs I bought from the link in the post above.
Attachments
20170106_235335-1280x720.jpg
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Re: LED Headlight Bulbs

Postby inairam » Sat Jan 07, 2017 9:27 am

LRiddle

Thank you for the comment.

This is not the same light as the last post. That light was ones with replaceable push and turn light bulbs in the 6 volts tear drop lights.

This application is sealed bean which is the pancake and round back lights ~ the mid 50s froward which were 6 and 12 volts.
When you only have 9 horsepower you need to know the names of all of the ponies!

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Re: LED Headlight Bulbs

Postby LRiddle » Sun Jan 08, 2017 12:25 am

inairam wrote:LRiddle

Thank you for the comment.

This is not the same light as the last post. That light was ones with replaceable push and turn light bulbs in the 6 volts tear drop lights.

This application is sealed bean which is the pancake and round back lights ~ the mid 50s froward which were 6 and 12 volts.


And thank you for the correction. I guess I didn't read the thread enough to realize. Or maybe I was too excited to finally be able to pass some knowledge on to someone. :lol: :lol:
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Re: LED Headlight Bulbs

Postby coppersmythe » Sun Jan 08, 2017 7:32 am

hello from the freezing deep south . does anyone know if the "hi-lo" par36 led ( 12v) shown on the larson link would work with the high and low light switch on the 12v cubs. thanks , coppersmythe.........................................

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1965 lo-boy with c-3 mower
1975 with homemade mower
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide
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Re: LED Headlight Bulbs

Postby inairam » Sun Jan 08, 2017 10:39 am

The flood light was tested the light level changed with the change in voltage and with the change in current ( 12v 2 am 12v 6 amp) but you may not see a big difference. They do offer a PAR-36 Hi-Lo look a little further down the page. I did not test that one.
When you only have 9 horsepower you need to know the names of all of the ponies!


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