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GTS250 Electrical Load
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@wbdvt avatar
wbdvt
UTC
Molto Verboso
'16 Sprint S 150, 2 x '06 GTS 250, '12 GTS 300, '74 Vespa 150 Super
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Posts: 1728
Location: Vermont
 
wbdvt
Molto Verboso
@wbdvt avatar
'16 Sprint S 150, 2 x '06 GTS 250, '12 GTS 300, '74 Vespa 150 Super
Joined: UTC
Posts: 1728
Location: Vermont
UTC quote
Does anyone know the limitations on how much load can be added to a GTS250 electrical system?
@jimc avatar
jimc
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Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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Location: Pleasant Hill, CA
 
jimc
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 46117
Location: Pleasant Hill, CA
UTC quote
I've always gone by a rule of thumb of 4A for 125/150cc, 8A for 250/300, and 12A for 400/500cc as the spare capacity. How rooted in fact this is I don't know, but I haven't killed a battery by using those figures.

So ~100W for a 250.
OP
@wbdvt avatar
wbdvt
UTC
Molto Verboso
'16 Sprint S 150, 2 x '06 GTS 250, '12 GTS 300, '74 Vespa 150 Super
Joined: UTC
Posts: 1728
Location: Vermont
 
wbdvt
Molto Verboso
@wbdvt avatar
'16 Sprint S 150, 2 x '06 GTS 250, '12 GTS 300, '74 Vespa 150 Super
Joined: UTC
Posts: 1728
Location: Vermont
UTC quote
Thanks Jim. Plenty of room as I have only added a USB port to charge phone, gps, aux led light bar. Also lowered load by replacing headlight with led one
Positive
@adri avatar
adri
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Atypical Canadian
2009 Vespa S50(LX150 motor swap), 2006 Vespa GTS250ie
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Posts: 2319
Location: Toronto, Canada
 
adri
Atypical Canadian
@adri avatar
2009 Vespa S50(LX150 motor swap), 2006 Vespa GTS250ie
Joined: UTC
Posts: 2319
Location: Toronto, Canada
UTC quote
Replace the tail light and running light too and you'll save even more. I did all of the running light swaps on my s150 and the difference was enough I could run heating grips and only be loading roughly the same watts the bike would have originally required when stock.

Someone in a YouTube comment told me that removing too much load could prematurely fry my voltage regulator... Don't know electrical well enough to know if that's true.
@jimc avatar
jimc
UTC
Moderaptor
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 46117
Location: Pleasant Hill, CA
 
jimc
Moderaptor
@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
Joined: UTC
Posts: 46117
Location: Pleasant Hill, CA
UTC quote
adri wrote:
Someone in a YouTube comment told me that removing too much load could prematurely fry my voltage regulator... Don't know electrical well enough to know if that's true.
It's bollocks.
@adri avatar
adri
UTC
Atypical Canadian
2009 Vespa S50(LX150 motor swap), 2006 Vespa GTS250ie
Joined: UTC
Posts: 2319
Location: Toronto, Canada
 
adri
Atypical Canadian
@adri avatar
2009 Vespa S50(LX150 motor swap), 2006 Vespa GTS250ie
Joined: UTC
Posts: 2319
Location: Toronto, Canada
UTC quote
jimc wrote:
It's bollocks.
You're exactly who I was hoping would see that and chime in. Thanks JimC.
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