Quick rundown. (I am NOT an electronic guru, keep this in mind)
.
2003 TTR250. Mag output is 14V, 13.5 amps @ 5000 RPM. = 189 Watts. (Baja Designs website says 150W for the TTR) Granted thats wringing the engines neck a bit, but anway...
.
Comes stock with a 35W / 36.5W headlight and a 5W/12W tail light (or something close). Thats it as far as electronics sapping the charging system on these things.
.
I upgraded the electronics as follows:
.
Garmin Nuvi GPS as a Speedo / Odo / Nav aid...maybe a few watts??
Dual PIAA 6" 55W Driving lights as head lights
.
.
Thats it. Wired the lights with a relay....Stock switch activates relay, 12AWG running from the battery + to the relay, from relay to lights, and from lights to battery -.
.
55W x 2 = 110 plus the small draws from the tail and GPS. I figured I'd be under my limit, especially riding down the road.
.
Rode it for the first time today post dual light upgrade. Rode about 2 miles to a gas station to fill up, turned bike / lights off, filled up and the bike hesitated to turn over for a split second then fired off. But it was warm so that helped.
.
Got me a bit worried so MM'd it when I got home.
.
12.1 ish volts DC at battery with bike off.
12.7-13 ish volts DC at battery with bike running, lights off.
11.4 ish volts DC at battery wth bike running, lights switched on...and I believe it was slowly going down. This was a quicker test, but I will be a bit more thorough and documentary tomorrow.
.
.
Am I miscalculating Wattage draw?
.
Is it possible to wire directly to the R/R output for the headlights? And if so would there be an advantage or disadvantage to this?
.
I have read some stuff on R/R upgrades and that helping people with voltage drops when accessories run. After some searching here and elsewhere (there is a good thread on ADVrider on a BMW GS model killing stators) it seems a R/R upgrade would just be more efficient at regulating voltage produced by the stator (i.e., keeping cooler really), but not necessarily helping with actual output? (Although more efficiency would seem to allow a little better output...but I could be way wrong here.)
.
Bottom line, do the stator and R/R just need to be upgraded?
.
I just really didnt think I was going to place an unacceptable load on the charging system since I'm not running a plethora of electronic equipment, but I seem to be mistaken...If I am WAY off base in some of my logic please let me know.
.
If I have forgotten a vital piece of needed info, let me know that too....Thanks.
.
2003 TTR250. Mag output is 14V, 13.5 amps @ 5000 RPM. = 189 Watts. (Baja Designs website says 150W for the TTR) Granted thats wringing the engines neck a bit, but anway...
.
Comes stock with a 35W / 36.5W headlight and a 5W/12W tail light (or something close). Thats it as far as electronics sapping the charging system on these things.
.
I upgraded the electronics as follows:
.
Garmin Nuvi GPS as a Speedo / Odo / Nav aid...maybe a few watts??
Dual PIAA 6" 55W Driving lights as head lights
.
.
Thats it. Wired the lights with a relay....Stock switch activates relay, 12AWG running from the battery + to the relay, from relay to lights, and from lights to battery -.
.
55W x 2 = 110 plus the small draws from the tail and GPS. I figured I'd be under my limit, especially riding down the road.
.
Rode it for the first time today post dual light upgrade. Rode about 2 miles to a gas station to fill up, turned bike / lights off, filled up and the bike hesitated to turn over for a split second then fired off. But it was warm so that helped.
.
Got me a bit worried so MM'd it when I got home.
.
12.1 ish volts DC at battery with bike off.
12.7-13 ish volts DC at battery with bike running, lights off.
11.4 ish volts DC at battery wth bike running, lights switched on...and I believe it was slowly going down. This was a quicker test, but I will be a bit more thorough and documentary tomorrow.
.
.
Am I miscalculating Wattage draw?
.
Is it possible to wire directly to the R/R output for the headlights? And if so would there be an advantage or disadvantage to this?
.
I have read some stuff on R/R upgrades and that helping people with voltage drops when accessories run. After some searching here and elsewhere (there is a good thread on ADVrider on a BMW GS model killing stators) it seems a R/R upgrade would just be more efficient at regulating voltage produced by the stator (i.e., keeping cooler really), but not necessarily helping with actual output? (Although more efficiency would seem to allow a little better output...but I could be way wrong here.)
.
Bottom line, do the stator and R/R just need to be upgraded?
.
I just really didnt think I was going to place an unacceptable load on the charging system since I'm not running a plethora of electronic equipment, but I seem to be mistaken...If I am WAY off base in some of my logic please let me know.
.
If I have forgotten a vital piece of needed info, let me know that too....Thanks.
