Shovelhead charging question!
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Cruiser
Joined: Dec 2015
Posts: 134
Likes: 2
From: ct
Shovelhead charging question!
I have an 83 harley fxr. I had a little problem I think. My batter at idle is reading 12.7 volts even when i rev it. I thought the battery volts will go up when you rev the bike. I tested the stator it self and was getting 22 volts, did an ohm test no breaks in the wires or any shorts. Is my battery charging and I'm over looking it?
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
Likes: 3,360
From: Cental, MI
Not that difficult really...
record/note
1] Battery Voltage, at rest [Not fresh off the Charger]
2] Battery Voltage, Key On...
3] Battery Voltage, Starter Engaged
4]Battery Voltage, at [High] Idle.
22VAC from the Stator seems Low... with a Half Wave rectifier that is Not even 12v!!!
record/note
1] Battery Voltage, at rest [Not fresh off the Charger]
2] Battery Voltage, Key On...
3] Battery Voltage, Starter Engaged
4]Battery Voltage, at [High] Idle.
22VAC from the Stator seems Low... with a Half Wave rectifier that is Not even 12v!!!
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
Likes: 3,360
From: Cental, MI
I stand Corrected [Again] I guess they must use a better rectifier!!
Makes it easy tho... If the Battery goes Down with use... ya need a regulator I Think...
Makes it easy tho... If the Battery goes Down with use... ya need a regulator I Think...
Road Master
Joined: Sep 2008
Posts: 811
Likes: 99
From: Hopewell Twp, PA
My 73 FL just had the same problem. It was not charging at all. It was the stator. As long as I was in there, I just got a kit for an Evo system, which consisted of the stator, rotor and regulator. Works fine now.
Thread Starter
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Cruiser
Joined: Dec 2015
Posts: 134
Likes: 2
From: ct
I bought a brand new voltage regulator $140. I made sure it was grounding, clean the bracket and everything. Im still getting 12.7 volts. Even when reving and idle. I tested the stator every way till sunday and it passed.
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Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
Likes: 3,360
From: Cental, MI
If it don't ever get lower... Who Cares??
I feel as long as the Charging system can "keep up" all is good...
Admittedly Odd Scenario... but, again, I would Not sweat it till it really is a Problem!!!
I'm curious what the battery sits at when bike is Off!!!!
I feel as long as the Charging system can "keep up" all is good...
Admittedly Odd Scenario... but, again, I would Not sweat it till it really is a Problem!!!
I'm curious what the battery sits at when bike is Off!!!!
Last edited by Racepres; Jun 15, 2018 at 08:15 AM.
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Seasoned HDF Member
Joined: Nov 2009
Posts: 15,705
Likes: 22,718
From: Farmington ,MS
Have you tested the battery? Some faulty batteries will not take a charge...therefore the regulator will not put out.
Have you tested your meter on another battery...like you car?
Have you tested your meter on another battery...like you car?
Seasoned HDF Member
Joined: Jul 2014
Posts: 8,590
Likes: 3,360
From: Cental, MI
and