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Cooling Systems Cooling Systems - Radiators, Water Pumps, Fans, Coolant, etc.


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August 13th, 2012, 08:04 PM   #1
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From: Baulkham Hills NSW

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I Ride: 2011 Fe390 2010 Fe570 motard
Radiator fan switch

Hi does anyone know where I can get a 90'C thermo plug for the radiator fan in Australia?
I looked at the ones in the states but they want around $25 just for postage pfffft.
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August 13th, 2012, 09:00 PM   #2
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Re: Radiator fan switch

What is wrong with the factory 100 / 95 unit?

I have read on here there is a 95 / 90 unit available:
Accessory fan switch from an '84 BMW 318i

Here are the specs of the factory Husaberg unit if you need to compare to one at the shop:
14mm x 1.5mm thread
The thread part is 11.4mm long

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August 13th, 2012, 10:04 PM   #3
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Re: Radiator fan switch

Thanks Davo,
I'm just a bit worried of hearing stories on here that it's not kicking in until it gets real hot.
I'm not sure how its going to hold up in the 34-38'C temp in OZ when summer comes around?
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August 13th, 2012, 11:17 PM   #4
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Re: Radiator fan switch

I try not to go riding when it is that hot but have been on a few hot days at Louee chasing the kids real slow up the rocky tracks out there.
The stock Thermo Switch is perfect.

You're more likely to have a problem with the exhaust heating the fuel up in the tank and boiling the fuel. I only noticed this after I switched to the little stubby anodised fuel breather vent which has a one way valve that stops the air getting out. I will be running the reflective shields people have been using on the bottom of their tanks when I get time and maybe I will wrap the mid exhaust pipe, not sure on that one yet.

I run the Trailtech Thermometer and it never goes over 104C and it never boils. You will be OK with the stock Thermo Switch and Factory Fan:
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August 13th, 2012, 11:31 PM   #5
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Re: Radiator fan switch

Ok thanks, thats a bit reassuring, I already wrapped the bottom of the tank with 3M reflective tape, I was waiting for a replacement fuel pump so tried to kill 2 birds, Think its working good so far but will find out when the weather warms up and i wring the bike neck.
How do you find the bike in traffic sitting at lights (if you use the road?) does it get warm?
I also have a trailtech Vapor that is on my way in transit with a dash board so I'm hoping the temp read out will be a good idea as well.
thanks for your feedback
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August 14th, 2012, 03:05 AM   #6
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Re: Radiator fan switch

Guys, my 570 vapor locked weekend before last, and I had previously installed DEI Reflect-A-Cool tape on the underside of the tank and wrapped the midpipe with DEI titanium exhaust wrap. The fuel in the tank was outgassing aggressively - a condition I can readily detect because I've replaced the black rubber factory hose with clear fuel line. After a 30 minute cool-down in the shade, the bike still wouldn't start. I have replaced the 100/95 radiator fan switch with the 95/90 NAPA replacement, but I don't yet know if the problem is solved. Suffice it to say that there is a design flaw on these bikes, and that a compound solution is nessary to address it.
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August 15th, 2012, 04:34 PM   #7
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Re: Radiator fan switch

Originally Posted by B3RG
How do you find the bike in traffic sitting at lights (if you use the road?) does it get warm?
Not sure I have never ridden my FE570 in traffic, especially around Drummoyne. Victoria Rd is bad enough in a car
I was assuming you were out in the dirt ridding and was wondering why you were riding on a 38C day

Originally Posted by B3RG
I also have a trailtech Vapor that is on my way in transit with a dash board so I'm hoping the temp read out will be a good idea as well.
I would run the stock Thermo Switch and keep an eye on the temp with the Trailtech. Mine runs at 104C max, so if you don't go any higher than that in traffic you will be OK.

Originally Posted by B3RG
thanks for your feedback
No worries
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