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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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 Posted: Tue Oct 28, 2008 2:44 pm Post subject: Alternator Power Output "N" MotoBoltOns Consumptio |
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sorry... couldnt find the info... and my search keeps going to debug the mode...
so...
can anyone tell me the general wattage consumption of the 94 k 1 1 r s motobrick running stock minus these motoboltons...
fogs...............70w x 2 = 140w
driving.......... 70w x 2 = 140w
run n lites..... 27w x 2 = 55w
jacket...........................100w
gloves............................20w
heated grips...................36w
total........................... 491w
so at 13v it would be 38a total plus the regular workings of the motobrick...
is this right...
also... if the 50a alternator is overloaded by boltons... will the battery just be go dead because it wasnt getting charged... or will the alternator melt down... or what...
thanks...
j o
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Tue Oct 28, 2008 2:55 pm Post subject: |
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It'll just kill the battery. When I put 55W instead of 35W bulbs in my fog lights it killed the battery after about 4 hours of running errands around town. Then I had to upgrade the LT alternator from 32A to 50A.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
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Last edited by Flying Duck on Tue Oct 28, 2008 5:30 pm; edited 1 time in total |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
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Location: Bumf***, WA
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| Posted: Tue Oct 28, 2008 2:56 pm Post subject: |
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When up above 3k rpms or so, the regulator limits the voltage at about 14.1 or 14.2 volts.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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fnord
Mad Brick Rider
Joined: 23 Oct 2008
Posts: 147
Location: Colebrook, CT
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| Posted: Tue Oct 28, 2008 4:43 pm Post subject: |
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| Flying Duck wrote: | | Then I had to upgraded the LT alternator from 32A to 50A. |
Was that a simple swap?
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1993 K1100RS
1999 Jeep Wrangler |
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jpberens1994K1100RS
Flying Brick Rider
Joined: 06 Apr 2008
Posts: 784
Location: Hales Corners, WI. / Relocating to central FL.
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| Posted: Tue Oct 28, 2008 5:07 pm Post subject: 93 K1100RS |
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I'm thinking your 93 has the 50 AMP alt. Mine does.
You can look right & and see on the side of the alternator.
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1993 K1100RS that I'd rather be riding FAST!
2014 Moto Guzzi Norge |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Tue Oct 28, 2008 5:31 pm Post subject: |
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All of the RS bikes have the 50A alternator. They started producing the LT before the RS which I suspect has something to do with the 93 LTs only having 32A alternators while the RS had 50A.
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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bmwmick
Flying Brick Rider
Joined: 07 Jun 2003
Posts: 907
Location: Tucson, AZ
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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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| Posted: Wed Oct 29, 2008 12:21 am Post subject: |
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bmwmick...
are you going on the death valley ride in january...
j o
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bmwmick
Flying Brick Rider
Joined: 07 Jun 2003
Posts: 907
Location: Tucson, AZ
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| Posted: Wed Oct 29, 2008 6:00 pm Post subject: |
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Johnny,
I'm not sure about DVD this year. I've been going since 1994 but with all the Park restrictions they are putting on us (The IBMWR), I'm not sure what we'll do.
Mick
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Mick McKinnon
KOG#175
'93 K1100LT, '96 R1100RT, '84 R100RS, 2010 Kawasaki C-14
Tucson, AZ |
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Estimated Prophet
Joined: 29 Oct 2008
Posts: 13
Location: Northern California
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| Posted: Mon Jan 12, 2009 5:06 pm Post subject: |
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I'm a newcomer to the world of K-bikes (airhead guy) and have the same question JO asked regarding base electrical load of a K bike (94 K1100LT in my case). As I've added extra lights (currently have MM50's and some kind of big 6" Hellas), rider and passenger heated jackets, I curious when I start to get into electrical supply issues. I will be installing a digital voltmeter/ambient temp gizmo to watch things, but I'm still curious how much electrical headroom I have above the base bike operating load. Anybody know? Thanks !
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94 K1100LT
78 R100RS
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Mon Jan 12, 2009 6:24 pm Post subject: |
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I did some rough math given what overtaxed the old 32A alternator on my LT. I'm guessing you've got in the neighborhood of 350-400W to play with. (Maybe a little more on an RS since I didn't include the radio.)
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93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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mnb
Flying Brick Rider
Joined: 20 Jun 2007
Posts: 660
Location: San Jose, CA
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| Posted: Mon Jan 12, 2009 7:00 pm Post subject: Re: Alternator Power Output "N" MotoBoltOns Consum |
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| owrstrich wrote: |
fogs...............70w x 2 = 140w
driving.......... 70w x 2 = 140w
run n lites..... 27w x 2 = 55w
jacket...........................100w
gloves............................20w
heated grips...................36w
total........................... 491w
so at 13v it would be 38a total plus the regular workings of the motobrick...
is this right...
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No.
First, my jacket sucks about the most juice of any on the market at 72 watts.
I think 36w for grips should be more like 25 and the same for gloves (mine are 24).
that makes for 355 watts. Amperage is determined by using 14volts (this was covered in a previous thread... I thought it was calc'd based on 12volts since it's 12 friggin volt circuitry... silly me)
So 25.35 Amps of a 50 amp alternator. Or 355 out of 700, leaving 345 for the bike.
You're close to the limit, but are you going to run the fog lights and driving lights simultaneously?  I wouldn't recommend it and it'll save you 140 watts put you in the comfort zone for power.
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1997 BMW K1100LT ABS Special Edition
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2011 Husqvarna TE310
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Mon Jan 12, 2009 7:16 pm Post subject: |
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By the way Johnny, your math for Run-n-Lites is off. The 1157 low filaments only draw 4W of power. The blinker filaments draw 27W but since those are a temporoary load I'd ignore them - unless you plan to run around with your hazards on - and even then they are only on half of the time. 
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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owrstrich
Flying Brick Rider
Joined: 29 Oct 2006
Posts: 2566
Location: CheezConsin
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| Posted: Mon Jan 12, 2009 10:29 pm Post subject: |
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rodger that...
i noticed yesterday that when i turned the fogs on... the bag of marbles made a noticeable different sound at idle with everything else off...
i went humm... sounded like it was stressing...
j o
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Mon Jan 12, 2009 10:39 pm Post subject: |
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| owrstrich wrote: | rodger that...
i noticed yesterday that when i turned the fogs on... the bag of marbles made a noticeable different sound at idle with everything else off...
i went humm... sounded like it was stressing...
j o |
Sounds like you need new marbles. Only official BMW OEM marbles will work however - after you've polished them with the BMW special marble polishing tool of course. 
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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