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Old 09-21-2012, 02:01 PM   #31
Bill the Bong
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Joined: Dec 2006
Location: Kalahari South Africa
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[QUOTE=zxrider11;19647716]Here is my 2012, very happy with the bike so far.]
And very nice and new it is. Happy trails.
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Old 10-06-2012, 03:35 PM   #32
JK001
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Joined: Apr 2012
Location: VA
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2009 690 SMC Owner

My stock 690 SMC runs hot, no question about it. I am looking to switch the thermostat and pipe, but doing the 2nd/3rd gear mod did miracles for my bike. I was very skeptical and didn't expect anything of it. But my bike runs 1-2 bars cooler in traffic compared to before, only had the fan kick on twice going up on the same trails as last weekend when it was almost always on. Big plus also, not stalling at stop lights any more, not even once. Smoothed out the fueling as well. I am judging all this based on the same conditions and riding in two back to back weekend trips of 300-375 miles each. The only difference was that I did the mod. I actually like the bike now
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Old 10-28-2012, 09:17 AM   #33
Brown Dog
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Location: Calhoun, GA. USA
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Quote:
Originally Posted by Uller View Post
... I went with the switch above from KTM Twins...
+1
Keeps my 690 Mucho Cooler than Stock
(but no cooler than the ebay switch that burnt up)

Brown Dog screwed with this post 10-28-2012 at 09:32 AM
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Old 10-28-2012, 04:26 PM   #34
hotwheels
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Fooling the computer

Is it the sensor that switches the fan on and off, or doe's the sensor send a resistance message to the computer and the computer turn the fan on and off. I fooled the computer in my Nissan p/u to richen the mixture by putting a resistor in series with the temp sensor. I eventually put a variable resister (potentiometer) in series and it was tunable from the driver's seat. The resistance of the sensor loop can be eaisily changed by putting a resistor either in series or parallel. If you don't know what this means ask a Ham radio operator (KJ4AMH here) This might be a cheap and simple way to get the fan to come on at the temperature you want it to.
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Old 10-28-2012, 05:32 PM   #35
Brown Dog
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Location: Calhoun, GA. USA
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The fan temp sensor is located in the right backside of the radiator.

It simply completes the ground to the Electric Radiator Cooling Fan When it's temp is reached.

The computer does NOT turn the fan on
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Old 01-28-2013, 05:55 PM   #36
Cracked Speedo
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almost done with my digital adjustable fan switch using the stock thermo switch. works good working on mounting.
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Old 02-08-2013, 08:47 AM   #37
Honkey Cat
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Joined: May 2011
Location: SW Florida
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fan switch

Has anybody installed a manual switch for the fan, like I did on my old DRZ400. I do not have a big problem with my 690 getting hot, but since I live in Fl, i'm thinking on installing one.
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Old 07-23-2013, 04:42 AM   #38
pmsystem
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Joined: Sep 2007
Location: Bergamo, ITA
Oddometer: 53
Hi,

Almost ready to get to Tunisia,
just wanted to replace the stock sensor with the one frm RallyRaid
(88 deg.) but talking with my KTM dealer told me this could cause
a fan high workload , with the risk of breaks...

Now I'm confused....donno what to do... ;)

Cheers

Pablo
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Old 07-23-2013, 05:47 AM   #39
StepOnIt
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Joined: Jan 2010
Location: Huntsville ON.
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Fan switch

Quote:
Originally Posted by Honkey Cat View Post
Has anybody installed a manual switch for the fan, like I did on my old DRZ400. I do not have a big problem with my 690 getting hot, but since I live in Fl, i'm thinking on installing one.
I did a few years back when my bike over heated on a ride. I have had no problems with it overheating now, just turn it on when I am trail riding. At some point my thermostat did die but didn't replace it till a few weeks ago. Ran it for a year or more just turning the fan on manually.
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Old 07-25-2013, 02:03 PM   #40
burmbuster
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Joined: Oct 2007
Location: South East USA
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Quote:
Originally Posted by pmsystem View Post
Hi,

Almost ready to get to Tunisia,
just wanted to replace the stock sensor with the one frm RallyRaid
(88 deg.) but talking with my KTM dealer told me this could cause
a fan high workload , with the risk of breaks...

Now I'm confused....donno what to do... ;)

Cheers

Pablo
I have the Rally Raid switch. The fan comes on sooner and has the bike running one bar cooler. Would you rather work the fan more with the possibility of having to replace the fan at some point in the future or keep the stock switch and replace the motor at some point in the future? I live on the Gulf Coast so heat is definitely an issue. Also use Engine Ice or similar for coolant. It helps.
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Old 07-25-2013, 02:05 PM   #41
Albie
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Joined: Mar 2004
Location: NWA
Oddometer: 9,252
Quote:
Originally Posted by pmsystem View Post
Hi,

Almost ready to get to Tunisia,
just wanted to replace the stock sensor with the one frm RallyRaid
(88 deg.) but talking with my KTM dealer told me this could cause
a fan high workload , with the risk of breaks...

Now I'm confused....donno what to do... ;)

Cheers

Pablo
I run my bike all the time in 100+ degree weather with the stock sensor. Never had it over heat. Don't even worry about it.
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Old 07-25-2013, 06:25 PM   #42
davesupreme
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if you run the mix richer, all your heat problems will go away... just sayin'....
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Old 07-26-2013, 01:12 AM   #43
pmsystem
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Location: Bergamo, ITA
Oddometer: 53
Quote:
Originally Posted by Albie View Post
I run my bike all the time in 100+ degree weather with the stock sensor. Never had it over heat. Don't even worry about it.
Thanks to everybody. I spoke to a mech friend of mine expert about desert rallyes and ktm setup and confirmed not to change the stock sensor...instead of replacing the sensor , if really needed, add a manual switch for the fan...or add 1 more fan (I have a small one from a PC, 12V, will see if it fits... ;) )

Cheers

Pablo
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Old 07-26-2013, 01:32 AM   #44
palmstatecrawler
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Location: Columbia, SC
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The radiator is supposedly filled with motorex coolant. I have a few bottles of engine ice in the garage and have wondered if it would be better to run that. Seems like it shouldn't matter as every one will come up to temp and kick on the fan.
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Old 07-26-2013, 07:06 AM   #45
Albie
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Quote:
Originally Posted by palmstatecrawler View Post
The radiator is supposedly filled with motorex coolant. I have a few bottles of engine ice in the garage and have wondered if it would be better to run that. Seems like it shouldn't matter as every one will come up to temp and kick on the fan.
Engine Ice works well with MX bikes. I used to run it in my CRF 450 and KX 450, But like you said, our bikes have fans, so you really never take advantage of a much more costly product with a higher boiling temp.

Now if you want lower temps then there's always using straight water and Water Wetter. The down side obviously is you don't have any freeze protection. But if you live in place like I do where you get really hot summers, you probably don't get really cold winters.

Water Wetter and water does break down quicker then anti-freeze, but it's cheap as hell to run.
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