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Old 02-08-2014, 04:41 AM   #1
sstewart OP
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Location: Boaz,Alabama
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Aux Fan Kit

Has anyone used the aux fan that BlackDog sells? I purchased the kit,I already have the lower thermostat switch installed. I don't know if this is overkill or not. Just trying to keep her as cool as possible.
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Old 02-08-2014, 05:27 AM   #2
gearheadE30
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If you've already bought it, why are you asking?

Unless it's really hot out or you do a lot of slow riding, typically the stock setup is fine. It is, however, extremely sensitive to bleeding. I'm of the opinion that if you're going to run a lower temp switch, you should probably run a second fan too, otherwise the stock fan is going to run all the time, and it's not unheard-of for the fan to die. 2 fans should noticeably decrease how long the fans run to bring it back to temp.
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Old 02-08-2014, 05:37 AM   #3
Grayjet
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Put it in (that's what she said)

My 990 would overheat when I exited the highway into stop and go traffic. I burped the bejesus out of it, but it still overheated. The second fan changed all that. I also purchased the lower temp switch, but have not installed it. I wanted to see what the second fan would do on its own before adding the switch. That was a year ago. Not one overheat since then. Do it!
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Old 02-08-2014, 05:46 AM   #4
Jaimoto
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I have the AdvMachines second fan and I think is one of the best things I added to the 990. During slow off roading and city traffic it cools the bike really fast, I only see 5 bars for a few seconds now and then both fans turn off. Before this mod I could be riding with 5 bars and the fan running forever
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Old 02-08-2014, 08:35 AM   #5
bikyto
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Quote:
Originally Posted by Jaimoto View Post
I have the AdvMachines second fan and I think is one of the best things I added to the 990. During slow off roading and city traffic it cools the bike really fast, I only see 5 bars for a few seconds now and then both fans turn off. Before this mod I could be riding with 5 bars and the fan running forever
+1 they were also the first to offer it to inmates.
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Old 02-08-2014, 04:47 PM   #6
The Doc
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Quote:
Originally Posted by Jaimoto View Post
I have the AdvMachines second fan and I think is one of the best things I added to the 990. During slow off roading and city traffic it cools the bike really fast, I only see 5 bars for a few seconds now and then both fans turn off. Before this mod I could be riding with 5 bars and the fan running forever
This is exactly what I found.
Ive had one fan die (original main) and two ktm thermo switches die, hence its probably a good idea to have a manual fan switch.
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Old 02-12-2014, 01:48 PM   #7
TCal
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Got it, love it. Easy install (setting aside the f&$/*ing tank removal/ replacement. Kurt is always awesome about Tim's and support for the install. She's a hot mama, and needs all the chilling effect she can get.
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Old 02-13-2014, 06:39 AM   #8
crushing
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Before adding the BD 2nd fan (and lower temp switch at the same time), I'd run into 5 bars pretty frequently. Now it's always running at 4 bars. The second fan probably cools quicker for the slow stuff, but a mechanic out here said he wouldn't bother adding the second fan. I think the reason is more air flow restriction when cruising?

I'd say if the lower temp switch keeps your bike at 4 bars, I'd keep the $150 in your pocket and keep the weight off your bike. Otherwise install the 2nd fan.
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Old 02-13-2014, 06:52 AM   #9
Jaimoto
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I think the air restriction is minimal and outweighed by the cooling ability of the second fan.
However, I agree that isn't necessary for everyone; if someone doesn't ride in heavy traffic at high temps, or off road on slow trails, and rides the 9X0 at speeds that allows a good flow it may be not needed.

To me, it's a must !
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Old 02-13-2014, 01:30 PM   #10
KtmPedro220
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Why not get Engine Ice?? Does help.
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Old 02-13-2014, 04:50 PM   #11
armourbl
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In my case, even on a cool day, like 60-70 degrees, my bike will run 4 bars from the top and sometimes see 2 bars from the top with the fan trying to cool things off in stop and go traffic. Summer isn't even here yet, where I'll see 110 degrees or more.

Tried burping the coolant myself several times, then took it to dealer. It was better after the dealer but something tells me my bike is still running on average more hot than it should given the conditions. I've never had a bike that runs on the fan so freaking much. A second fan it definitely in my future.

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Old 02-14-2014, 01:45 PM   #12
BigTony
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IMO the second fan is one of those things that should have come from the factory. Before adding it my 07 bike got hot on a ride out in the black rock desert and once it got on the high side of 5 bars or onto 6 bars the fan was running full bore and at idle or riding below 30mph the bike wouldn't get back to 4 bars.

It never overheated technically but probably would have if I hadn't bailed on the trickiest part of the ride

(My body's cooling system DID fail and I got heat stroke)

Since adding the 2nd fan it stays on 4 bars and when it gets warm the fans turn on, cool it down, and turn back off like it should
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Old 02-14-2014, 05:12 PM   #13
sstewart OP
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Aux fan

I run a lower thermo switch,engine ice,and now an aux fan. It cools down very quickly now. I can't believe how quickly it does.
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Old 02-15-2014, 01:22 AM   #14
up2nogood
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I'm running second fan and lower temp switch. Keeps cooler on the tight stuff, so works as intended.
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Old 02-15-2014, 06:35 AM   #15
556baller
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I run a 2nd fan kit and temp sensor kit and I live in North County San Diego. Engine temp was only an issue when stuck in traffic.
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