Alternator output GL1000

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tlbranth
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Alternator output GL1000

#1

Post by tlbranth »

Anyone know the wattage output of the alternator on a '75 GL1000? I've installed a new headlight with an H4 bulb that's 60/55watts which is a bit higher than the original 40/50watt arrangement. I've put LED's everywhere else but don't want to upset the alternator.
Terry
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flyin900
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Re: Alternator output GL1000

#2

Post by flyin900 »

Specs are in the FSM I just don't have access to one right at the moment. It is in the first sections of the FSM under specifications.
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tlbranth
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Re: Alternator output GL1000

#3

Post by tlbranth »

I have the shop manual and looked for quite a while but didn't find it
Terry
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jb2x
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Re: Alternator output GL1000

#4

Post by jb2x »

Hi, i have this:
page66.jpg
page66.jpg (162.66 KiB) Viewed 241 times
300w / 5000rpm

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Whiskerfish
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Re: Alternator output GL1000

#5

Post by Whiskerfish »

If that is the only thing you have done with a higher demand then you should not have any issues.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
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and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
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RB
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Re: Alternator output GL1000

#6

Post by RB »

Best is to check battery charging at various rpms while riding..real time test..voltmeter attached to battery..at idle should read close to 12v's at 3,500 13.5 or so..if you get that you should be good...so many variables in older bikes..wires,connections, regulator/rectifier, connectors, etc..running test the only sure way to know
Last edited by RB on Sun Jan 21, 2018 11:06 am, edited 1 time in total.
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salukispeed
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Re: Alternator output GL1000

#7

Post by salukispeed »

Last I looked said the alternator is rated at 360 watt. My 84 interstate has all original lighting and will keep up with a heated vest and heated glove liners if used on the highway most of the time. As already mentioned a quick check with a voltmeter at 3,000 rpm is a good idea. You will actually need 13.5 volts to actually be recharging the battery. I see 14 at 3,500 even if the fan is running. All with a good and fully charged battery to start.
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tlbranth
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Re: Alternator output GL1000

#8

Post by tlbranth »

Yes I will keep an eye on voltage. If it's true that the alternator always puts out full current and the unused part is dumped to the heat sink, then maybe overloading it wouldn't hurt it eh? Thanks Jean. I think 300 watts is it. I'll add up all my wattages and see where I stand.
Terry
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Don't work at Boeing
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1999 GL1500 SE
2002 Honda VT750 "ACE"
1975 GL1000
1970 CB750
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Re: Alternator output GL1000

#9

Post by Whiskerfish »

I have tried to do that a couple of times but the ignition circuit always seems to stump me due to the constant cycling. I know I got close once and on a stock bike working perfectly I came to the conclusion you could add dual 35 watt driving lights but not dual 55's. So upgrading the single existing should not be even a blip on the radar.
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
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