The KTM300 Thread

Discussion in 'Thumpers' started by GasGas300, Jan 11, 2010.

  1. Gordy

    Gordy SUPPORTER

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    :thumb
    I’m mostly just messin with you. I’m fairly certain that a fan can help but my belief in conspiracy theories is un-stoppable. :lol2
    Why doesn’t KTM sell the bikes with one? They have to be concerned about all these bikes out there melting down, right?
    I think that a fan restricts air flow more than it creates at most speeds. Mostly slow crawling speeds could obviously use something more than “moving along”.

    I’m going to put some heat indicator tape around mine to get some real world high temps. If it’s hot, I’ll try one. See???? I’m willing to listen and (maybe) change!
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  2. retroone

    retroone Long timer

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    My new 300 TPI fan comes on maybe once a ride if that... I average 14 mph on a good day...
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  3. adv_sacrifice

    adv_sacrifice Adventurer

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    i just put one on to prevent overheating. i was riding my yz450f in the woods and it would boil over with my skill/terrain. i put a fan on and didnt have the issue again (along with some other non-cooling related bike changes/added skill). so it works for me. just being proactive in keeping the bike happy since its my first 2 stroke/woods bike
  4. Nowwhat

    Nowwhat I'll Go Second... Super Supporter

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    I am shocked how little the fan comes on.....2020 300tpi xc....
  5. Gordy

    Gordy SUPPORTER

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    A 450 4T is a different animal and needs one to survive any ride.


    Ahhh.....retroone stays moving, like maybe one stop all day! :rofl
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  6. RideFreak

    RideFreak Torque Junky

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    Do you use a lower pressure cap with the catch bottle? If not anytime there's coolant transfer into the catch tank you've subjected the system to the max pressure the factory deems safe. Catching the coolant is definately a benifit but I would prefer not reach point that exceeds the pressure relief which is basically the boil over temp. I may be wrong but I thought the catch system uses the OEM rad cap.
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  7. RideFreak

    RideFreak Torque Junky

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    I don't think KTM pritoitizes a fan over weight on the 2T, look what happened to the subframes. These days it's all about how light they can make it and of course they expect you to rebuild pretty frequently. Also like you said there's plenty of riders that don't use one, especially guys racing. If you put tape on, place it on the bottom edge of the radiator, that will give you comparable values, placing it on the cyl will be a bit higher. You ride well enough where I doubt it would be an issue.
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  8. guns_equal_freedom

    guns_equal_freedom Long timer

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    For the same reasons why they don't sell them with spark arrestors or radiator guards or aluminum hand guards or....
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  9. Gordy

    Gordy SUPPORTER

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    That's funny, I've never ran radiator guards either and haven't got around to aluminum hand guards on the new bike either. Not sure if I will, I kinda like not having them up there. My friend messed up his wrist pretty bad when he got it caught in one so I'm deliberating the pros and cons right now. My old bush whacking bike wil keep em though.

    Btw, none of the armour things mentioned could cause an engine to overheat so that's not a valid argument. If these bikes were overheating riding like they are meant to be ridden, KTM would be forced to sell them with fans, much like they do with most of their 4Ts.

    I suspect that quite a few overheating issues are 1) jetting related and 2) clutch abuse. :dunno

    I also think that a fan on a 2T is not a bad idea but not necessarily a good one either. :scratch

    Remember, it's Ready to Race, not Ready to Idle! :rofl
  10. timeOday

    timeOday Long timer

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    Their stuff is beautiful and also effective in my experience. However I went with cheaper (DeVol) guards on my 300 because they have an additional backplate (behind the radiator) to protect against folding and which I hope will make them stronger. The bulletproof guard on my 500 bowed out a bit when I dropped it on its side on a rock and the guard took the brunt. I am not complaining, given the choice at equal cost I would probably still choose them, but I am not sure the extra cost of milling the whole guard from a block results in additional strength.

    Now that I think about it, mounting a radiator fan with the Devol guards is going to be difficult because they cover the back of the radiator too.
  11. IanInCalgary

    IanInCalgary Been here awhile

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    Will a "standard" sealed chain such as a DID VX2 fit on the '19+ bikes? The stock chain is narrower than typical so that its dimensions are close to a non-sealed (old-style) chain.

    Ian
  12. N8

    N8 I prefer my pumpkin with a blue & white mask. Supporter

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    Yes, but my experience with the non-VT2 chains is excessive masterlink clip & pin wear.
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  13. Bitingdog

    Bitingdog That's not my dog

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    I've never overheated my 300 when riding desert and flowing trails in 100°F+ heat.
    On the other hand, I have boiled over in tight and technical slow terrain, muddy hillclimbs, and situations where plenty of crawling & clutch slipping is necessary; even at below 32°F.

    I don't have a fan, but I need one sometimes photo0.jpeg 20190322_153321.jpg
  14. ChasM

    ChasM Been here awhile

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    The OEM rad cap is perfectly fine although I prefer the Tusk 2.0 thermo cap. I have successfully used the Tusk rad cap on two previous KTM's and my current Beta.
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  15. Nowwhat

    Nowwhat I'll Go Second... Super Supporter

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    Just buy a 2020 tpi.... they run cooler...... think of all the money you will save on a fan....
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  16. Gordy

    Gordy SUPPORTER

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    Does Slavens have an ECU tuner/fan bundle for that bike? :lol2
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  17. Nowwhat

    Nowwhat I'll Go Second... Super Supporter

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    Oct 15th hahaha
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  18. Dan950ser

    Dan950ser Two Wheeled Addict

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    What do you need a tuner for? I did put a fan on mine but I ride a lot of slow technical ST that goes from 1500-6500 feet during the prime trial riding of the year. In winter it’s low land riding or snow biking so the fan could be taken off but I’m to lazy to do that.
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  19. Spino

    Spino Adventurer

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    Another fan question: Does Trail Tech’s “universal” kit work on a bike that doesn’t have a battery? Can it run off a 9v or something?
  20. timeOday

    timeOday Long timer

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    Does the bike in question have a DC electrical system?