K11 Owners Group

Flying Duck · Posted: Sat Aug 18, 2007 11:28 am Post subject: Stupid idea or not?

OK, here's a little thought I had on getting more heat away from the rider on a K11RS. It's a brainstroming idea and I'm just throwing this out to see what people think.

Idea: Most PC fans are 12V DC and move about 32cfm(cubic feet/minute) of air. (And they're pretty cheap too. Very Happy

) My idea is to mount one or two of these on each side inside the side vents of the RS lowers - hoping to push more air/heat out of the side before it can toast the rider. I think it would have the most advantage at low speeds - like stuck in traffic on a hot day.

I'm just wondering if that much ariflow would be enough to make a difference.

Or maybe find a small car fan or fan from another type of bike that would fit in there? Question

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94 RS
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91 & 92 K75Ss
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DaveVoorhis · Posted: Sat Aug 18, 2007 12:06 pm Post subject: Re: Stupid idea or not?

Flying Duck · Posted: Sat Aug 18, 2007 12:14 pm Post subject:

AS/400? Boy, that takes me back. I used to work on those back in the late 80s. Shocked

Do you think an AS/400 fan would fit in there? I'll have to open things up and take some measurements to find what the max allowable dimensions are.

Yeah, I think the little PC fans might not push enough air. Maybe I'll do some more searching on ebay for a beefier 12V DC fan.
_________________
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

Scott_Anderson · Posted: Sat Aug 18, 2007 12:20 pm Post subject:

Sounds like it's worth a try. How about another bmw radiator fan? I don't know how much room your dealing with here, but I'm not to sure about the p.c. fan idea. If it's that hot to cook you you'll surely toast one of those little fans. I think Dave is on track about a larger mainframe fan, though some of them are 120vac. Check with some of your p.c. recycler's in your area they may have something.

edit, You could look at www.grainger.com at least to look at the specs of what you need. Then look to buy on e-bay.

Off the grid · Posted: Sat Aug 18, 2007 12:20 pm Post subject:

Where's the option for, "by all means try it and let us know how it turns out"

Very Happy

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desert661 · Joined: 23 Jul 2007 Posts: 11 Location: Rosamond, Ca

I was considering doing the same thing. At a traffic light, the RS1100 cooks the rider...at least in the Antelope Valley heat. On the road, it is not a problem. On the fourth of July it was about 105-110 when I road though Victorville, Lucerne Valley to the 29 Palms area. I held it at a bit faster than posted speeds for quite a while (40 miles) and no high speed heat problems. The problem is in the 0-5 mph range on mild to hot days.
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'96 K1100RS

HoosierStu · Posted: Tue Aug 21, 2007 7:16 am Post subject:

If you're going to do it, do it right.

Get a 120 mm case fan from Newegg.com. It will move much more air and run quieter.
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"Still can't find 6th gear" 94 K1100LT

will3hawks · Posted: Wed Nov 14, 2007 12:02 am Post subject: extra fans

great concept! Stay with automotive/motorcycle spec fans which can withstand the heat. Tried computer fans on an airhead oil cooler and they simply used electricity with no cooling improvement, but a Volkswagon cooling fan (if it fits) could move a significant amount of air if angled and ducted properly. Keep us posted!

Regards,

Will
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The truth is 100 miles east of Memphis
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94 K 1100RS (Speedwagon)
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