Overheating KTM 640 Adventure

[ChrisC]

Originally Posted by Loadedagain

just for fun i'll put a couple sticky thermocouples on my nads and run them through to a data logger. lets see what happens.

.

[AusieRob]

Originally Posted by Velocibiker

I want to add a switch that will allow me to override the LH fan and turn it on whenever I want (FAN1). Additionally, I'd like the same switch to kick on the 2nd (RH) fan (FAN2) when necessary leaving the LH fan running. Default or off switch position would return everything to it's standard set-up (FAN1 comes on based on temp). Can this even be done with a single mechanical switch?

Yes,it is possible. But before we create a design why do you think this is a good way to do it?
I'm doing the same mod (dual fans) to mine. My take of this is - I'm adding the dual fans to increase cooling when hot. So if the temp sensor comes on I want max cooling... So, I'm putting the 2 fans parallel across the temp sensor circuits, with (maybe) a manual override switch across the circuit as well.
But what you ask can be done but just think about the additional wiring & complexity which equals more chance to F-up or to be F-uped...

[AusieRob]

Here's some ideas on how to wire as you asked. You can use relays instead etc.. The wiring shown is indicative.
Enjoy.....

[Velocibiker]

Originally Posted by AusieRob

Yes,it is possible. But before we create a design why do you think this is a good way to do it?
...

Simply because I don't want to double the current draw all at once. I want to be pre-emptive and want to be able to kick on FAN1 at will. Then, if I see that just the one isn't cutting it (which it often doesn't), I can kick on FAN2.

My fan normally only comes on when I'm stuck in traffic or riding slow & hard in the dirt. I can't do anything if I'm stuck in traffic, so I want the override and extra fan ability. If I'm running too hot in the dirt, there's always the option to just stop or find a less technical route to cool it back down.

Sure. Simplest way would just be to splice the new fan into the existing fan circuit - but what fun would that be?

and thanks for the diagram!!

[txrider]

Originally Posted by AusieRob

Here's some ideas on how to wire as you asked. You can use relays instead etc.. The wiring shown is indicative.
Enjoy.....

I know my bike is a '96 and all, but the '96 thermal switch doesn't ground, it's a switch with 2 terminals.

[Happe]

Originally Posted by rapiti

Went on a woods ride yesterday, and had some cooling issues. This has been brewing for a while, and I have some questions.

1) Do the "supercool" (I forget the names) liquids do more harm than good? Better than ionized water? Recommendations (that you have used!)

2) The idiot light comes on 62 seconds before the fan kicks in. What's up with that? The fan used to come on first by a good while. What deterioration is this a sign of?

3) After riding with the idjut light on for a while, the trail crossed the road, and I went for a cruise on the road to get some air flow. It took a lot longer than I had expected for the temp. light to go out. Later, I even had it come on while doing 55-60 on the road! Does this point to the water pump? Where else?

I plan on flushing the radiators, checking the thermostat, and maybe replacing the water pump impeller. This is all new to me. Any hints/suggestions? I apologize if this has been covered before. Search (and my memory) isn't what it once was...

Gracias,

Paolo

Hi Rapiti,

just a quick one,
the temperature gauge is where on your bike (should be near the cyl head in the small cool circuit before the thermostat.)
The tempswitch for the Fan is where? (should be near the bottom of the right radiator and in the big cooling circuit behind the thermostat)
Three guesses what makes trouble in your cooling system

cheers

Stefan

If you need more cooling rip out the thermostat like on the Rally bikes ;-)

[AusieRob]

Originally Posted by txrider

I know my bike is a '96 and all, but the '96 thermal switch doesn't ground, it's a switch with 2 terminals.

Well you maybe right, BUT you sure one of those terminals isn't wired back to a ground point, somewhere? I would be surprised if it was done much differently to what's shown... I didn't have a KTM wiring diagram in my pocket at the time and I did say "The wiring shown is indicative" ...