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Mcgee
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Port Townsend Wa.
Joined: 12/07/2014
Posts: 14

Hi guys!
I have just acquired a 1992 R100RT and so far love it! I live in the Pacific NW and with the air getting cooler I was wondering if the charging system will handle my heated gear? I have a First Gear heated jacket and Gerbings gloves that I use on my 09 GSA. No, I do not know how much power they use, but I suppose its pretty standard for the different gear. There is a controller for it also. I assume the charging system is stock and it has heated grips. Thanks for your responses!

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6327
Say Hi to my cousins in Pt.

Say Hi to my cousins in Pt. Townsend!

Does it look like this? http://www.revzilla.com/product/firstgear-heated-jacket-liner

At 90 watts, that's a pretty big load on the system. If you're running both the grips and liner, I don't think the bike's charging system could keep up with that, even at highway speeds. Maybe using the jacket controller and reducing the time with both on, the system might be able to do it. I'm sure you'd need to use a battery charger after each ride. Watch the fairing voltmeter to get an idea of how much voltage is getting to the battery...less than 13v wouldn't be good.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

Twocams
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VBMWMO #8750
Joined: 03/16/2014
Posts: 631
I just bought a 92 R100RT

I just bought a 92 R100RT also. I wouldn't put my charging system thru that much work just to keep me warm. All these systems are getting older now. My volt meter jumps around to much for a good accurate reading. But you could use your ohm meter, put it on volts, hook it up to the battery, start your bike up. Turn on each Item at a very high idle and see where the voltage reads. Like Kurt says when it gets down below 13V it ain't looking good. just my .02

twocams

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Twocams
69 R69S 03 K1200GT
92 R100RT

Mcgee
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Port Townsend Wa.
Joined: 12/07/2014
Posts: 14
90 watts on the jacket not

90 watts on the jacket not counting the gloves, that is a much. I think the alternator is 250 watt so guess I will put more layers on, lol. Thanks guys for the advice. I will say hi to everybody for you schrader7032!

Darryl.Richman
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VBMWMO #6285
Surf City, USA (Santa Cruz, CA)
Joined: 10/27/2006
Posts: 2183
As a counterpoint, I don't

As a counterpoint, I don't think you should have a problem, as long as you're not running a bunch of high powered lights, too.

The charging system does nominally make about 280 watts, and running the bike doesn't take that much, even with the 60 watt high beam running. I have run my R90S (which has only a 240 watt alternator) on long trips while wearing a Gerbing jacket liner on full, and the battery stayed charged.

Try temporarily hooking up a voltmeter at the battery and riding the bike around with the heated gear and see what the voltage is at the battery with it on and off. If the battery continues to charge above 13.2V, even with all the electrical loads on, you should be ok.

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Mcgee
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Port Townsend Wa.
Joined: 12/07/2014
Posts: 14
Sure wouldn’t hurt to try it.

Sure wouldn’t hurt to try it. Thanks for the info!

Mcgee
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Port Townsend Wa.
Joined: 12/07/2014
Posts: 14
The bike has an accessory

The bike has an accessory plug behind the seat. Haven’t investigated it yet. Maybe good enough for a phone charger or? Will probably hook directly to the Battery with a fused plug to try the heated gear.
Again, thank you for all of the responses! Great web site!

khittner
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VBMWMO #8223
Joined: 02/15/2012
Posts: 364
If you're used to packaging

If you're used to packaging yourself up in heated gear for a ride on an essentially unfaired GS, your new-to-you R100RT will be different. While I do operate with a substantial load of sub-cutaneous insulation (uh, fat), my RT's fairing shunts enough air aside that I've never needed more than my old Widder electric vest (40-50 watts at full draw; less if I use my rheostat switch), with my Darien jacket (usually without its liner), down to ambient temps in the high 30s, for rides of up to two hours. A couple of times in rain (then I used the Darien's fleece liner and the electric vest). I don't have electric grips, but I do have a pair of Widder electric gloves and a connecting harness---and I've never used them in the nearly 20 years I've owned them, and my hands have been fine. I bought them back when I had an R90S, and haven't needed them since I traded it off for the RT 18 years ago.

Sometimes that long-ago bike-trade decision seems regrettable (like whenever someone actually gets 5-figures for a 90S these days)---but then it rains, and gets dark and cold when I'm out on the RT, and that's when the RT is in its element. Mine has its original 280W charging system, with a replacement diode board and higher output regulator from Motorrad Elektrik. I won't need more juice until someone comes up with a watt-hungry COOLING suit for summertime RT riding. You can probably pare down your electric hot gear a notch, and go forth comfortably into the dark and cold aboard your trusty new steed without fear.

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Konrad

Mcgee
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Port Townsend Wa.
Joined: 12/07/2014
Posts: 14
Thanks for your comments! I

Thanks for your comments! I have noticed the fairing doing a good job keeping me warm compared to my GS. The temps were 40’s this morning when I headed out. I do have heated grips and they work well. I really do like this bike!

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