Electrical system capacity - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 20 Old 10-29-2003, 01:13 AM
rodan
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Electrical system capacity

OK, I know there has to be a few thoroghly farkled VStroms out there.

I'm wondering how much the charging system can take?

Currently (no pun intended) I've got heated grips and an Aerostich electric vest, I run a GPS and MP3 player while touring. I plan to add a radar detector, and replace the MP3 with a Delphi Sat radio this year. I'm also looking at adding auxiliary driving lights, and that brings up the question of what the charging system will handle. I think a pair of 55w lights will put it over the top and into discharge, but I think I can get away with a pair of 35w lights, which can be pretty effective with a good reflector/lens (PIAA/Hella) and good bulb (PIAA).

My primary concern is being able to run the grips (28w), vest (45w), GPS (?w), and lights (2x55w=110w or 2x35w=70w) all at the same time for cold, nighttime running when touring without discharging the battery. The music/ radar detector are secondary at night, but would be nice.

Any electrical engineers out there?
Anyone know what the stock charging system output is?
Anyone know the number of wingbeats/minute for an African Sparrow?
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post #2 of 20 Old 10-29-2003, 05:54 AM
 
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Re: Electrical system capacity

Quote:
Originally Posted by rodan
Anyone know the number of wingbeats/minute for an African Sparrow?
The brown or the black ??? :twisted:
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post #3 of 20 Old 10-29-2003, 09:25 PM
DirtyWurty
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Re: Electrical system capacity

Any electrical engineers out there?
Anyone know what the stock charging system output is?
Anyone know the number of wingbeats/minute for an African Sparrow? [/quote]

a great question.
I plan on an electric vest and heated gloves. add the V-1 radar and the autocom and the proposed driving lights will the 04 altenator output be able to handle it.??
 
post #4 of 20 Old 10-29-2003, 09:51 PM
Meatsac
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Re: Electrical system capacity

Quote:
Originally Posted by rodan

My primary concern is being able to run the grips (28w), vest (45w), GPS (?w), and lights (2x55w=110w or 2x35w=70w) all at the same time for cold, nighttime running when touring without discharging the battery. The music/ radar detector are secondary at night, but would be nice.

Any electrical engineers out there?
Anyone know what the stock charging system output is?
Anyone know the number of wingbeats/minute for an African Sparrow?
You should be able to run that alright. IIRC you have 400 watts to play with. That is a load of techno goodies (GPS, IPOD, Radar detectors). You can so much of that stuff that you won't have to worry. You run into probs when you want to run aux lights that light up the sky like a runway along with a full heated suit.

I run heated grips w/heat troller, jastek powerlett, IPOD, cell phone and GPS. I can easily add a heated vest and auxiliary lights (which I plan too). If I wanted to add heated gloves, pants and socks then I would look at aftermarket alternator options, if any.
post #5 of 20 Old 10-29-2003, 10:58 PM
cos
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RE

Allright, I keep seeing this "IIRC" all over web. What does it stand for?

Thanks,
Bruce
post #6 of 20 Old 10-30-2003, 12:44 AM
Meatsac
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IIRC= if I recall correctly
post #7 of 20 Old 10-30-2003, 10:33 AM
dbl_aitch
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The 400 watt output concerns me a bit, too. Grips and Gerbing are pushing 100 watts. I ordered one of these little LED indicator lights to keep me posted on battery "health."

http://www.electricalconnection.com/...icators/bm.htm

Light goes yellow, turn something off for a while...
post #8 of 20 Old 10-30-2003, 06:29 PM
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Quote:
Originally Posted by dbl_aitch
The 400 watt output concerns me a bit, too. Grips and Gerbing are pushing 100 watts. I ordered one of these little LED indicator lights to keep me posted on battery "health."

http://www.electricalconnection.com/...icators/bm.htm

Light goes yellow, turn something off for a while...
I have seen this on John Weldon's bike. It looks like it works pretty good.
I will be adding one in the near future.

steve

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post #9 of 20 Old 10-30-2003, 09:24 PM
rodan
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Quote:
Originally Posted by Meatsac
IIRC you have 400 watts to play with.
Anyone know a ballpark of what the bike needs just to run and keep the battery charged?

I have heard ~150-200W, but I don't know if this is correct. A 200W surplus would be plenty to run ECM devices, heated grips/vest and 2x35W auxiliary lights, but I'm thinking 2x55W would be pushing it. A full heated suit would get ugly...

Remember that peak alternator output comes at something like 5000 rpm, so you would need to be going ~85 mph, or gear down to achieve that....
post #10 of 20 Old 10-29-2004, 06:23 PM
wd6cmu
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Quote:
Anyone know a ballpark of what the bike needs just to run and keep the battery charged?
I made these current measurements of the various circuits on my DL650 last weekend:

Ignition: Depends on RPM, about 2A at cruising RPM.

Headlights: 9A high, 8.5A low. This measurement might be a bit low
because of resistance in my setup, but it agrees pretty well with the
lamp wattage rating.

Signal: 2.6A continuous, more while signaling turns, brakes, etc.
This number might be a little higher than normal since I have a couple
of running lights on my bike.

Fan: 0A unless the fan runs. Since we're mostly concerned with cold days,
I'm making the assumption that the engine won't be hot enough to need
the fan.

Fuel: Looks like about 4-5A depending on RPM, engine load, etc.

So it looks like, with high beams on and under average conditions,
there's at least 10A/120W of capacity left over from the 650's 380W
alternator.
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