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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: canazei1200 on May 16, 2012, 04:32:10 AM
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I have a K75s already has an extra 12v socket wired to the battety. I would like to add front spots/ fog lights. I have heated inner gloves and sometimes a satnag. Satnag to 12v socket heated gloves into bmw socket. With extra spots on would this be too much for the poor old 75. Thanks all needed thanks tp uk summer and lots of night riding due to work.
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Shouldn`t be any problem, have used (w/o satnav, which draws close to nothing) this set up more than twenty years on a -86 K100RS, which got the same alternator.
Inge K.
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How much extra can we take from a 32A alternator? Can I hang on a pair of 55W Hellas and some heated grips?
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Volts * Amps == Watts (ignoring resistance, etc)
12 * 32 = 384
Once you exceed that (384), you start draining your battery.
If it were me and I was worried, I'd install a voltmeter. If it goes below 12.6, you're draining your battery. Realtime notification, better than an event (dead battery) driven system.
Tom
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Volts * Amps == Watts (ignoring resistance, etc)
12 * 32 = 384
Once you exceed that (384), you start draining your battery.
If it were me and I was worried, I'd install a voltmeter. If it goes below 12.6, you're draining your battery. Realtime notification, better than an event (dead battery) driven system.
Tom
Any recommendations for the type and emplacement of that voltmeter? Also, are you hooking it on the battery directly or is it fused on the existing box?
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How much extra can we take from a 32A alternator? Can I hang on a pair of 55W Hellas and some heated grips?
You might want to try using LED lights rather than the 55w Hellas. The ones I put on my K75RT draw only 10 watts each and seem pretty bright. Reasonably priced as well... $109/pair.
carlsbits.com/images/IMG_0419.JPG (http://carlsbits.com/images/IMG_0419.JPG)
carlsbits.com/images/IMG_0417.JPG (http://carlsbits.com/images/IMG_0417.JPG)
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Volts * Amps == Watts (ignoring resistance, etc)
12 * 32 = 384
Once you exceed that (384), you start draining your battery.
If it were me and I was worried, I'd install a voltmeter. If it goes below 12.6, you're draining your battery. Realtime notification, better than an event (dead battery) driven system.
Any recommendations for the type and emplacement of that voltmeter? Also, are you hooking it on the battery directly or is it fused on the existing box?
I must admit that I have not installed a voltmeter on a K-bike.
I did install one on my Triumph Tiger though. I installed, http://www.aerostich.com/prevent-or-repair/electrical/batteries-chargers-and-monitors/led-battery-gauge.html (http://www.aerostich.com/prevent-or-repair/electrical/batteries-chargers-and-monitors/led-battery-gauge.html) on the dash. There are cheaper ones, but I was not disapointed with that one. If I was to install one on my RT it would probably be on the dash-pad across from the powerlet socket. Where you connect it to the electrical system is not very important, I chose a switched source on the Tiger.
I would not get too hung up on what style/type of voltmeter you install or where you wire it into the bike. If you're sharp about this stuff (I'm not) you can do the math and not worry about it. Or, if you know you've installed too many gizmos and want to pick and choose (because you know you can't run them all at once) the voltmeter is a good solution. The voltmeter will also let you know if your alternator/regulator stop working.
In British Columbia in mid-May at 0030, with the PIAA 910's on, the high-beams on, my electric vest on and the heated grips on, I was instantly informed that I was draining the battery. Turning off the heated grips solved the problem. Apparently they draw a lot of current. The lights assisted in dodging the moose. :yow
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How much extra can we take from a 32A alternator? Can I hang on a pair of 55W Hellas and some heated grips?
You might want to try using LED lights rather than the 55w Hellas. The ones I put on my K75RT draw only 10 watts each and seem pretty bright. Reasonably priced as well... $109/pair.
carlsbits.com/images/IMG_0419.JPG (http://carlsbits.com/images/IMG_0419.JPG)
carlsbits.com/images/IMG_0417.JPG (http://carlsbits.com/images/IMG_0417.JPG)
Carl, what's the brand name of your LED lights ?
Are they Jamis ?
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[quote
Carl, what's the brand name of your LED lights ?
Are they Jamis ?
[/quote]
I actually don't know the brand name... they're Chinese and I got them from an ADVrider vendor...
http://www.mondomotos.com/product/MM12aux/ (http://www.mondomotos.com/product/MM12aux/)
Happy with them so far though they've only been on the bike for a month or so.
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i can say for certain that the 50a k1100 alternator was able to keep up with...
55w low beam...
pair catz 55w @ fog lamps...
pair catz 55w @ driving lamps...
pair heated grips...
pair heated gloves...
2 pair @ heated insoles...
2 @ heated jacket liners...
for about 50 miles... then my abs lights started flashing... thats when i realized all 4 catz lamps were on... i shut down the catz driving lamps and within a few minutes my abs lights stopped flashing and all was well...
so the 50a can run everything we gott... its an easy upgrade... i would seriously consider it...
j o