Electric accessory power? - BMW Luxury Touring Community
 
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post #1 of 11 Old Oct 17th, 2006, 9:50 am Thread Starter
 
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Electric accessory power?

Can someone tell me why the LT and beemers in general can run multiple electrical accessories like a vest, heated grips, heated seat, GPS etc. and the Jap bikes, Harley's etc. don't have that capability?
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post #2 of 11 Old Oct 17th, 2006, 10:05 am
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Mostly because it has an 840 watt alternator to power all them goodies. Thats about 60 amps of available current (before bike system demands). Most of the others don't have this capacity.

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post #3 of 11 Old Oct 17th, 2006, 10:26 am
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Mostly because it has an 840 watt alternator to power all them goodies. Thats about 60 amps of available current (before bike system demands). Most of the others don't have this capacity.
Correct, and 70 AMP @ 12 vdc and also a nice 19 amp/hour battery vs. 12-15 a/h on others!

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post #4 of 11 Old Oct 17th, 2006, 12:49 pm Thread Starter
 
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Do you think BMW engineers that alternator coming from the automotive applications? Why wouldn't Honda do the same with the GL and ST's and more importantly any other manufacturer of "touring bikes"?
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post #5 of 11 Old Oct 17th, 2006, 1:09 pm
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Maybe because they don't expect people to ride them all year long??

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post #6 of 11 Old Oct 17th, 2006, 1:46 pm
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Quote:
Originally Posted by hoodoodrum
Do you think BMW engineers that alternator coming from the automotive applications? Why wouldn't Honda do the same with the GL and ST's and more importantly any other manufacturer of "touring bikes"?
Goldwings and ST's do have higher output alternators. The ST is a 40 amp if I remember.
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post #7 of 11 Old Oct 17th, 2006, 4:03 pm
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Originally Posted by hoodoodrum
Do you think BMW engineers that alternator coming from the automotive applications? Why wouldn't Honda do the same with the GL and ST's and more importantly any other manufacturer of "touring bikes"?
they needed to ramp up the watts because of the ABS brakes and associated components and the hydro-electric center stand, the other manufactures don't include these as standard yet.

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post #8 of 11 Old Oct 17th, 2006, 11:24 pm
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Quote:
Originally Posted by hoodoodrum
Can someone tell me why the LT and beemers in general can run multiple electrical accessories like a vest, heated grips, heated seat, GPS etc. and the Jap bikes, Harley's etc. don't have that capability?
The 2006 Goldwings had a 1300 watt alternator. Would you call that excessive (?) or useful? d.


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post #9 of 11 Old Oct 18th, 2006, 2:32 am
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BMW has realized over the years that many of its riders will use that extra power, and so they have designed it in from the beginning. The Long Distance and Adventure Touring lists often have threads regarding upgrading the alternators on FJRs, KTMs, etc., and there is a strong aftermarket for those who need it.

But an FJR or KTM is significantly cheaper than a BMW, so theoretically those owners have more loose cash to play with such upgrades.

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post #10 of 11 Old Oct 18th, 2006, 6:46 am
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Originally Posted by dwillie
The 2006 Goldwings had a 1300 watt alternator. Would you call that excessive (?) or useful? d.


http://www.gwta.org/2006_Wing.htm
D.
BMW uses a 3-PHASE alternator (1450 watt @ 3ph = 838 w/ph).
Couldnít tell if the 06 GW uses 3 ph. or single phase.
I don't think manufactures waste a dime including something they won't need as it will further tax the gas mileage from the extra load.
If I was intrested in a GW I would find out though.

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post #11 of 11 Old Oct 18th, 2006, 9:56 am
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Smile Electric Accessory Power

And, in anticipation of supplying electrical power to heated clothing, gloves, socks, etc., it is a common practice to up the Amperage availability from the two 12V BMW outlets. It is feasible to add a second, right outlet; use 14 or 12 gauge wiring for 15 and 20 Amp service, respectively, to the outlets and come directly off the battery, with, say a eight conductor, install a "y", put fuses in series with each "y" and run each respective lead to the positive/negative terminals of the output plugs.
At the passenger, left outlet, new power can be routed into the compartment by entering through the interior rubber grommet through which existing electrical wires have been routed...while one is at it, should a conventional 12V cigarette lighter outlet be desired, to the right of the existing BMW outlet is a convenient location for the new outlet. Naturally, 12V power of sufficient Amperage should be provided from a convenient source in your wiring scheme.

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