2012 ktm 500 exc?

Discussion in 'Thumpers' started by Visigothic, Apr 27, 2011.

  1. Foot dragger

    Foot dragger singletracker

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    chico,just below rag dump(nor-cal)
    I like the video,the 2 stroke playfully zips and zaps down the trail while the 500 lumbers and grunts along.
    Much like a diesel.:rofl
  2. guns_equal_freedom

    guns_equal_freedom Long timer

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    5,625
    If I were to put it to music I would have used Concerto No. 2 in G minor, Op. 8, RV 315, "L'estate" (Summer) by Antonio Vivaldi.

    That's from the late baroque music of music.

    But what do I know about music. :lol3
  3. Nomad

    Nomad High Speed Low Drag

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    glad you liked it. but yeah it didn't help that the guy on the kdx is pretty fast! hell I even struggled to keep up with him on my 450.
  4. crankshaft

    crankshaft Guns are for pussies

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    Screw him anyway:lol3
  5. crankshaft

    crankshaft Guns are for pussies

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    Not sure if you guys have covered the rad fan switch or not but I made some discoveries today and thought I would share. The switch on my XCW failed after the first week, so I called the dealer and was told I was SOL but I could get a new one for $54:rofl As fate would have it, my 390 Berg switch was also bad and they happen to be the same. An 84 BMW 318i switch will work and they're offered in 91c and 99c but nobody local has them....of course.

    I decided to paw through a friends parts bin at a rally shop and see what I could come up with but found nothing that would work. We decided to chuck the switch into the lathe and pop the cap off and have a look inside. The reason why the switch failed was burned out terminals, the bi-metal disc and popper was fine. My theory is that the switch isn't rugged enough to pass the current for the fan and burns out prematurely. I think the solution is to add a simple relay to the circuit and run a pair of leeds to the fan from the battery directly, with a fuse of course.

    The cars that use this style of fan switch all have a relay, so it's obvious to me that it's a start. Probably better for the fan also, since it's not pulling so much amperage through the fan switch. Anyway, there it is:lol3
  6. mxbundy

    mxbundy Been here awhile

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    Man! looks like I gotta plan a trip to Virginny!! Awesome trails! Is this on private or public land?

    Bundy
  7. harcus

    harcus Long timer

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    The switch on my '12 EXC failed as well but at more like 3000 miles. I, too, looked into the relay idea as well as another source.

    BTW - The dealer price should be closer to $25 as is shown in the fische ...

    http://partsfinder.onlinemicrofiche.com/ktmtwins/KTM_OEM/KTMDB.asp?Type=13&A=555&B=37

    And, most auto switches were priced similarly so no cost savings.

    I noticed that my '07 990 with 32,xxx miles had a similar switch but with wire vs blade connections that has never failed. So it stayed with the OEM switch as being the most simple / cheapest solution & the failure an anomaly. Also, most car fans have larger motors pulling more current hence the relay.

    If it fails again soon, it will be revisited. :D
  8. avconnect

    avconnect Been here awhile

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    Must admit I know nothing of the fan switch. When installed does it allow you to override auto operation of the fan? How does it work and why would I want one on my EXC? Does the fan stay in auto mode if the switch is off?
  9. crankshaft

    crankshaft Guns are for pussies

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    I've had two fail this year, so I'm probably going to install a relay.
    I ride a lot of single track, so I'm pretty sure my switches get a work out:lol3
  10. Nomad

    Nomad High Speed Low Drag

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    well make the trip! the video is at my friend Bricky's place. I've been able to make a few deals on some private land around here since the public riding spots are few and far between. the ones that are around my area are poorly maintained anyway.
  11. Honkey Cat

    Honkey Cat Tailights Fade!

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    Mad because i live in florida and wish i could ride out my house to that
  12. mxbundy

    mxbundy Been here awhile

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    I have ridden Hatfield McCoy before, but this looks much better!!

    Bundy
  13. StevenD

    StevenD Hmmmm, dirt!

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    Would a simple capacitor over the switch not work? I think it's just sparks that would burn it out, not so much current as the switch is def. big enough for the fan's power requirement.
    Many on the 950's run 2 fans over the 1 switch without issues for years.
  14. crankshaft

    crankshaft Guns are for pussies

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    Not sure but I've had two switches burnout in 6 months time on two different bikes that use the same switch. The one I tore into had burned contacts, and the other switch is probably the same burned contacts. The switches in the 950's are different anyway, apples to oranges. The local auto parts guy said the catalog said the part was made by Fiat:lol3 Fiat- The Italian Lucas:lol3
  15. team ftb

    team ftb Befuddled Adventurer

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    Can I get confirmation or contrary opinion from people on the last sentance in the above quote? Is it not possible to mail my ECU to get programed? Swatdoc if you are reading this can you let us know how you came about this information? Thanks.
  16. StevenD

    StevenD Hmmmm, dirt!

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    As long as the dealer has a similar bike that he could temporarily connect your ecu to it should be no problem to mail it to them.

    I know of no other software but dealer software that works with the .blz's
  17. StevenD

    StevenD Hmmmm, dirt!

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    Hey Crank,

    I thought they were the same.. My bad. Are they burned, like melted out? Or just blackened from sparking? If its just sparks that soil the connection (so a clean would have fixed it if you could service it) than a cap should really do the trick!

    ah well.. italian electronics, we all know what to expect from that! :lol3
  18. spsduc

    spsduc spsduc

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    :D Yeah we're pretty lucky here in New Zealand.

    Have a great Christmas.
  19. Ronin ADV

    Ronin ADV Gear addict

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    So that's it. I just finished all 200 pages and 3000 replies in this thread.
    And yes I went and put a deposit on a 2013 500 exc. :lol3
    Thanks to this thread I went in to my dealer with 3 pages of notes / parts I wanted. I got a blanket 10% off so I ordered most of the initial parts I plan to add.
    I still need to sort out my HDB order, steering damper, powerlet stuff, and a few other minor odds and ends.
    My Renazco seat build date is in March.
    I plan to pick up the bike in January.
    I think my WR250R is already getting jealous.
  20. dirt missile

    dirt missile Been here awhile

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    Arcing and contact chatter (on-off, on-off, etc.) are what really kills contact switches like these. Bi-metal switches don’t usually slam closed (reducing arcing), they’ll arc and erode the contacts quickly as they close slowly (500ms vs 100ms). The addition of a relay may not help much, because the same conditions will still exist at the switch. The switch and contact material are likely shite. A more robust switch may work out better. Do we know of one? But good luck! Let us know how it works out.
    Or, I could be completely off base... it's happened before!