Will my system really cause charging issues?
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Stellar HDF Member
Joined: Jul 2016
Posts: 2,216
Likes: 672
From: Andover, MN
Will my system really cause charging issues?
I've had some conversations with a car audio builder, who builds some crazy car and boat systems. But we disagree on bikes. He gets very technical with his points and thus, installs very small amps for bike systems. I'm not very knowledgeable with the technical aspects of voltage and watts and draw and blah blah.
My question: will my 800 watt amp, 250 watt amp and DSP cause my issues with my voltage regulator and stator? If so, what point are you considered at risk for issues?
My question: will my 800 watt amp, 250 watt amp and DSP cause my issues with my voltage regulator and stator? If so, what point are you considered at risk for issues?
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,593
Likes: 6,435
From: Honah Lee
I think this is correct....At 2000 RPM. the AC output should be 32-46 volts AC ....approximately 16-23 AC per 1000 RPM. Your total output is from 35 at 2000 to 50 AMP at 3000. 14.3-14.7 DC at 3600 RPM
You should put a DC amp reader across the battery cable and see what the bike is drawing sitting still running at say 2500 RPM or so. Any leftover from above is your reserve. And there is not a lot of it.
It may keep up but it is probably going to work the regulator and stator to a short death.
Be sure to post back your initial reading and then your adds on. People go round and round on this and nobody seems to truly know or understand it. Sure not in the service manual. And when I read your spec, I am not sure I understand is that the low voltage output for a speaker or the device amp draw. You want to know what it draws. That dog with two dick output means little.
You should put a DC amp reader across the battery cable and see what the bike is drawing sitting still running at say 2500 RPM or so. Any leftover from above is your reserve. And there is not a lot of it.
It may keep up but it is probably going to work the regulator and stator to a short death.
Be sure to post back your initial reading and then your adds on. People go round and round on this and nobody seems to truly know or understand it. Sure not in the service manual. And when I read your spec, I am not sure I understand is that the low voltage output for a speaker or the device amp draw. You want to know what it draws. That dog with two dick output means little.
Last edited by Jackie Paper; Jul 17, 2019 at 04:13 PM.
Road Captain
Joined: Aug 2005
Posts: 510
Likes: 78
Interesting question! With one amp, even a rather large amp that fits, I think the stock charging system is good unless we are talking about something extreme. However, when you start adding secondary amps and other add-ons, things start getting gray quick. I think the other half of the question then becomes, what else are you using as your headroom begins to be diminished? I purposely went from halogen to LED for all lighting to help with the overhead of using headed jackets in the late fall/early spring. Those kinds of things have to be accounted too, as applicable.
Looking forward to the more informed feedback from some of the senior members!
Looking forward to the more informed feedback from some of the senior members!
Banned
Joined: May 2018
Posts: 655
Likes: 88
From: US
I think this is correct....At 2000 RPM. the AC output should be 32-46 volts AC ....approximately 16-23 AC per 1000 RPM. Your total output is from 35 at 2000 to 50 AMP at 3000. 14.3-14.7 DC at 3600 RPM
You should put a DC amp reader across the battery cable and see what the bike is drawing sitting still running at say 2500 RPM or so. Any leftover from above is your reserve. And there is not a lot of it.
It may keep up but it is probably going to work the regulator and stator to a short death.
Be sure to post back your initial reading and then your adds on. People go round and round on this and nobody seems to truly know or understand it. Sure not in the service manual. And when I read your spec, I am not sure I understand is that the low voltage output for a speaker or the device amp draw. You want to know what it draws. That dog with two dick output means little.
https://www.youtube.com/watch?v=4Dc8VH0eXcs
You should put a DC amp reader across the battery cable and see what the bike is drawing sitting still running at say 2500 RPM or so. Any leftover from above is your reserve. And there is not a lot of it.
It may keep up but it is probably going to work the regulator and stator to a short death.
Be sure to post back your initial reading and then your adds on. People go round and round on this and nobody seems to truly know or understand it. Sure not in the service manual. And when I read your spec, I am not sure I understand is that the low voltage output for a speaker or the device amp draw. You want to know what it draws. That dog with two dick output means little.
https://www.youtube.com/watch?v=4Dc8VH0eXcs
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,593
Likes: 6,435
From: Honah Lee
No. Battery voltage is 12.7 DC. Its size is determined by starting load. Once running, alternator is the power source.
Road Captain
Joined: Jul 2019
Posts: 720
Likes: 48
From: Fort Worth
Excuse my lack of mechanical knowlwdge,but does that mean a larger or more efficient stator?
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Road Warrior
Joined: Sep 2017
Posts: 1,401
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From: Sussex, WI
I never heard of an alternator on a harley before. Interesting
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Outstanding HDF Member
Joined: Oct 2012
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From: Mi
There are plenty of people running well over 3000 watts including myself, that never had any issues. Most will not max out their volume and current draw while bike is running as distortion is harder to detect.
Juice
Juice
Seasoned HDF Member
Joined: Mar 2010
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From: Honah Lee
The wire wound stator is mounted on the front left of the crankshaft. The wire out is near the end of the oil filter on on the block half.
The armature rotor is splined to the crank behind compensator and is permanent magnet. Alternator feeds AC volts to regulator thru diodes changing it to DC. Regulator then takes this DC and regulates it to run bike and keep battery charged.
The armature rotor is splined to the crank behind compensator and is permanent magnet. Alternator feeds AC volts to regulator thru diodes changing it to DC. Regulator then takes this DC and regulates it to run bike and keep battery charged.