690R Radiator Thermo Fan Mod

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This topic contains 6 replies, has 0 voices, and was last updated by  Dean 13 years, 7 months ago.

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  • #100717

    Dwayne O
    Member

    After my little bingle a while ago where I damaged the radiator slightly :whistle: I have decided to have it Silver Soldered to complete the repair (Quik Metal has done its job well so far)
    I removed the radiator this arvo and remembered a mod that MickP told me about when I first bought the bike (one of a few little mods actually) ;)

    The cowling on the Thermo is so tight to the back of the rad, it rubs and could rub through over time with the vibrations etc etc

    [attachment=2973]2011-11-1619.04.32.jpg[/attachment]

    So, off came the fan assembly, you can see the wear mark from 13,000k

    [attachment=2974]2011-11-1619.04.55.jpg[/attachment]

    Now mark the back of the cowling about 5mm with a white paint pen and carefullt grind or sand the plastic back till the mark is gone

    [attachment=2975]2011-11-1619.05.32.jpg[/attachment]

    Presto, a nice clearance gap between the two without affecting the flow too much

    [attachment=2976]2011-11-1619.06.29.jpg[/attachment]

    Thanx to MickP again for the advice (Smart fella he is) ;) ;) ;)

    #211868

    Greg
    Member

    Needs to be pretty close Eags to allow suction mate. If there is to much gap the fan will pull air through the gap not the radiator. A strip of soft rubber or foam will give it a perfect seal make the fan more efficient and not wear the radiator

    TB

    #211869

    Dwayne O
    Member

    I just happen to have just that here in the shed :)

    Thanx for the reminder ;)
    Will update the pics when I have the radiator back repaired

    #211872
    Trailboss wrote:
    Needs to be pretty close Eags to allow suction mate. If there is to much gap the fan will pull air through the gap not the radiator. A strip of soft rubber or foam will give it a perfect seal make the fan more efficient and not wear the radiator

    TB

    Absolutely TB! It is very important as the air will take the path of least resistance.

    #211870

    Dwayne O
    Member

    I have a couple of ideas on the rubber/foam seal actually :whistle:
    Need to check my stock tomorrow :laugh:

    Whatever I use, it will be cheaper to replace than a worn out radiator , even if the foam or rubber disintegrate over time (which they will eventually) :dry:

    Cheers for the tips guys

    #211876

    Dean
    Member
    EAGLE`02 wrote:
    I have a couple of ideas on the rubber/foam seal actually :whistle:
    Need to check my stock tomorrow :laugh:

    I found that a mouse pad was a perfect thickness when I did mine.

    (have you ever seen a menstruating mouse ? :blush:

    Ollie

    #211871

    Dwayne O
    Member

    Well :whistle:
    The radiator repair was a fizzer :pinch: Noone can get the repair done well enough, they say KTM have some silly alloy that nothing sticks too ????? :dry: :blink:
    They say they have had mixed results in the past and have even had KTM Reps in to discuss options etc etc

    Anyway, I decided to bring it home today & do the repair myself, but this time with some Devcon Aluminium Epoxy !!
    Was after that in the first place, but settled for a lesser product :silly:

    I also settled on the mouse pad foam between the thermo fan & the rad body. The pinchwels seal I have was a tad too thick I thought ,,,,

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