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i have recentley aquierd one of these kits for free
http://www.woollyhatshop.com/view_product.php?id=1589
its not that bad a light but the battrey pack/carrier is so damb ugly and heavy is there any way of geting shot of this and replacing with something along the lines of these?
http://www.anticsonline.co.uk/1618_1.html
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Should be fine
is the crucial thing so get a nicad that matches it. remeber 6 v lead acid is is higher when fully charge - 6,8 v IIRC I think the ni cad are similarRechargeable Sealed Lead Acid 6V-4.5AH Battery Pack
will the run time be greatly reduced/increaced ?
as u can tell this is abit further than my knowlege reaches so any help would be great i just need somthing to see in the woods lol
also would upgrading the bulbs to a 10w over the current 5 and 2.5 bulbs greatley reduce the run time im not woried about the low beam just full beam for as long as possible
Right - basic electrics voltage = watts divided by amps or amps = watts divided by volts. The capacity of the battery is measured in amp hours 0 you have a 4,5 amp hour battery - replace it with a 4.5 amp hour battery you get the same run time.
Increase the wattage of the bulb and decrease your runtime. double the wattage and half your run time.
At the moment both bulbs together are 7.5 watts at 6 volts = 1.25 amps - you battery is 4.5 amp / hours so can sustain 1.25 amps for 3.6 hrs.
change to 2 x 10 watt ie 20 watt = 3.3 amps so 1,3 hours.
You could of course get a bigger battery than the 4.5 amp hour you have if going to a ni cad battery
The best way of improving light output will be to convert to LEDs are they are twice as efficient - so for the same wattage you get more light. Cutter electronics do conversion kits but needs some elctronics adding into the mix - available off the shelf.
Teh third option is to get a 7,2 volt batter - this is known as overvolting and makes the halogens brighter but then the lamp units will burn out more quickly I [i] think[/i] that a 6 volt halogen will cope with 7.2 volts just.
If you use a 7.2v pack, be sure not to switch on straight after charging, Ni-Cd cells have a very high voltage when just off charge, certainly enough to have blown my bulbs when I was using them.Also, if you're going to change bulbs then you might consider going down the 12v route, but be aware of overheating issues such as melted plastic housings if you put too powerful a lamp in there, they're usually only for small wattage lamps for this reson.
picked up a uber cheep(£5) stick pack 7.2v to test on the lights and it seemed to work really well im yet to see how long it lasts as its only a 700mha time predicted about 20 mins but atlest its a start.
thanks for the help so far guys.