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honda 919 elec system power, battery


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oldspark 
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Posted: November 10, 2010 at 12:15 AM / IP Logged  
My 1972 Yamahahaha RD350 & later RD400 had an alternator.
My 1972/3 Ducati twin has a permanent magnet rotor - but what would you expect for Italian electrics - it even had those old ceramic fuses - for a V-twin motorbike!
And I'm certain my 1984 kumandsuckme GPz900s have alternators, though all I recall was their "complex and flawed" cooling fan relay system, and great headlights....
I had no idea that stator system were so common (except for marine and recreational etc). But for large or road bikes...??!!
garrettmarvel 
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Posted: November 10, 2010 at 11:46 AM / IP Logged  
hmmmm... i'm not coming up with a solution here, much less an elegant one, to solve my power woes for my stereo.
can anyone assist with maybe finding alternator and battery specs for my bike and circuit schematic design to solve this bugger? extra battery: are any specific battery types unacceptable? can the alternator/regulator be tweaked to charge better or more efficiently? can i install a 2nd power system to run the stereo only? other ideas or outside the box thinking?
riding sans tunes is not as cool as with... =(
oldspark 
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Posted: November 10, 2010 at 5:32 PM / IP Logged  
I though most of that had already been answered.
As to battery, I'd suggest sealed - not a wet cell.
garrettmarvel 
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Posted: November 19, 2010 at 3:23 PM / IP Logged  
oldspark wrote:
I though most of that had already been answered.
As to battery, I'd suggest sealed - not a wet cell.
most had been answered, but not all...
on a motorcycle forum someone suggested the following for a 2nd battery setup:
"Get a diode from your local electronic shop, must be at least 15 amp reverse rated. Then connect your second battery via the diode in the positive rail to the bikes battery +. ( Connect with the white stripe pointing towrads the positive of the secondary battery). The secondary battery will also need an earth lead run to a good metal part of the frame. This will power the amplifier, but not allow the amplifier to drain the main battery. It will charge up via the bikes alternator when off load."
would this 10Ah battery work: http://www.amazon.com/Replacement-Battery-VOLT-250-FASTON/dp/B000RP5HHY
how can i calculate/estimate how long the 2nd battery will last? where can i get a diode?
oldspark 
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Posted: November 19, 2010 at 4:27 PM / IP Logged  
That has been answered.
You are not getting any extra power from your alternator.
Forget the diode etc - there is no point...
Just get a second independent battery to power your sound.
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