Cooling the Duke 690 - KTM Forums: KTM Motorcycle Forum
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post #1 of 31 (permalink) Old 10-29-2016, 10:14 PM Thread Starter
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Cooling the Duke 690

Hi All,

I am about to experience my first Melbourne (Oz) summer with my 2015 Duke 690R. My riding will include (unfortunately) a fair bit of heavy duty city commuting.

I have noticed that the temp gauge on my Duke rockets up toward max when I am in the thick of the peak hour commute.
My Duke has just had the first service and I requested a change to Engine Ice coolant, as I had heard good things about it. It's early days, but I think the Engine Ice may have helped drop the temp by a bar or two when things get really hot. But the worst of the Melbourne heat is still ahead (think 35 degrees C plus) so I am wondering how the Duke will cope.

So my queries are:

-What is an acceptable maximum for the temp gauge and does a warning light come on in addition to the bars maxing out?
-Are the Duke 690 fans generally up to the task in HOT weather? Anything aftermarket out there as far as fans go?
-My Duke 390 riding son has heard of 'Helix' competition radiator caps which are meant to reduce air in the system and increase the effectiveness of the coolant. Might this be an option for the 690?

Any other tips for surviving hot weather on the Duke?

Thanks for this,

Andy
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post #2 of 31 (permalink) Old 10-29-2016, 10:20 PM
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Ktm makes a fan switch that triggers about 30 degrees Fahrenheit cooler than the stock one. In my opinion it is mandatory for these bikes if you live in hot climates.
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post #3 of 31 (permalink) Old 10-30-2016, 04:54 AM Thread Starter
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Hey Thanks for the response newjerseyduke,

I've had a look in my 2015 Powerparts catalogue and can't see any sign of a KTM fan switch.
If you have any info or a link to the product that would be appreciated, otherwise I'll ask at the dealer.
Sounds like a good option if I can source one here in Oz.
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post #4 of 31 (permalink) Old 10-30-2016, 05:27 AM
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I'm guessing this : https://ktmtwins.com/collections/690...switch-upgrade
is what you're looking for, not done it myself, waiting to see how the 16 model handles summer first.
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post #5 of 31 (permalink) Old 10-30-2016, 05:30 AM
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I installed one of these http://smartmoto-electronics.com/catalog.php?cid=22
It allows manual over ride of thermo fan.
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post #6 of 31 (permalink) Old 10-30-2016, 09:34 AM
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Way cheaper than the KTM twins, direct plug and play, lowers fan start up to 80-85 from 100. I just ordered mine a few days ago after reading across the forums for this same thing. Eventually found this one on advrider.

http://www.ktm-parts.com/83035045000.html
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post #7 of 31 (permalink) Old 10-30-2016, 10:00 AM
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The 80-85 is the one I used.
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post #8 of 31 (permalink) Old 10-30-2016, 03:40 PM Thread Starter
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Thanks Guys for the links,
Much appreciated!
Summer traffic should be a lot less stressful...
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post #9 of 31 (permalink) Old 10-30-2016, 05:03 PM
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Hey Andy,

May I politely suggest to go with the Aussie solution (Garry's). I have fitted both the thermostat switch with a lower "kick-in" temp and the Garry over-ride switch, I have tried both options. The over-ride switch is cheaper and in the middle of Summer you can just leave the fan on permanently.

Quote:
Originally Posted by 690arrr View Post
It's literally hard to explain how good they are
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post #10 of 31 (permalink) Old 10-30-2016, 10:57 PM
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Hey guys some useful info, now I'm living in "Paradise" lol I've yet to experience too much hot traffic riding, just doing a block around the nightclubs and beach gets the temp bars right up top!!

Does it actually do anything wrong running that hot,apart from cooking your legs lol??

Once it starts getting high summer here i usually woos out and take my Italian job out with air con blasting my partners nips nice and firm, but that's not sticking to the subject i know, however a good visual I'm sure
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