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Author [ES] [CA] [PL] [PT] [IT] [DE] [FR] [NL] [DK] [NO] [GR] [TR] Topic: Cooling Fan  (Read 1468 times)

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Offline ricochet

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Cooling Fan
« on: September 13, 2012, 05:05:06 PM »
This is my second water-cooled bike, the first was the Piaggio X9.  I noticed that with the X9, when the fan is working and I turn off the engine, it continues to stay on and only turns off when the desired temperature is reached.  With the CT, the fan turns off when the engine power is cut-off.  Is this normal?  What coukd be the rationale behind this?
« Last Edit: September 13, 2012, 05:35:15 PM by ricochet »
2003 Piaggio X9 (Sold), 2004 BMW R1200C Montauk (Sold), 2004 BMW R1150GS Adventure (Sold), 2007 BMW R1200GS Adventure (Sold)), 2012 Honda VFR1200X Crosstourer

Happiness Is Never Real Unless Shared

Offline Manno

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Re: Cooling Fan
« Reply #1 on: September 13, 2012, 06:15:45 PM »
Your piaggio has more of an enclosed engine so heat will dissipate less quickly, hence the fan stays on a bit to help out. This isn't a problem on the CT because the 'more' exposed engine cools itself naturally. Don't worry and have faith in the Honda engineers.  :028:
RD50LC GT185 FZR600R ZZR1100C3 CBR1100XXW XR650R VFR1200X

Offline thetrecker

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Re: Cooling Fan
« Reply #2 on: September 13, 2012, 06:21:03 PM »
Yea ricochet,its true what you say, and the manual states the fan can come on at any time so beware of fingers near it. Its odd and has happened to me several times when in town traffic, it comes on very regular and then when you get to your destination and want to switch the engine off its still running and you wonder will i switch it off or let it run its natural course. I have a Radgaurd fitted and wonder if it is making the fan run more often by restricting the airflow around  the water rad. Newer engines run hotter to burn off more harmful emissions so may'be this explains a little
Thetrecker. Sometimes your the bug and sometimes your the windshield.

Offline IanM

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Re: Cooling Fan
« Reply #3 on: September 13, 2012, 07:30:16 PM »
I tend to agree that the rad fan does run more often than I’d have expected.  My previous water cooed bike was a VFR 800, and the fan on that didn’t run until the temperature gauge got to 107, so maybe it is just that the 1200 engine is supposed to run hotter for more efficient combustion. 

As I found out when I went up to Beowulf for the radiator guard to be designed (https://www.crosstourer.com/index.php/topic,1206.0.html), the Crosstourer has a bigger radiator than the ordinary VFR1200 too, so Honda’s engineers presumably know what’s going on.


IanM

Offline ricochet

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Re: Cooling Fan
« Reply #4 on: September 14, 2012, 02:54:44 AM »
THANKS
2003 Piaggio X9 (Sold), 2004 BMW R1200C Montauk (Sold), 2004 BMW R1150GS Adventure (Sold), 2007 BMW R1200GS Adventure (Sold)), 2012 Honda VFR1200X Crosstourer

Happiness Is Never Real Unless Shared

 


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