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Honda ST1300 Section => Electrics & Electronics - Volts, Amps and Fuses ST1300 => Topic started by: edwardgoodwin on June 15, 2015, 01:12:55 AM

Title: Cooling Fans Overrun?
Post by: edwardgoodwin on June 15, 2015, 01:12:55 AM
Hi All, Can anyone advise if there is this facility on the ST1300 please? Thanks, Ed. :slvr13
Title: Re: Cooling Fans Overrun?
Post by: ST2UP on June 15, 2015, 06:29:06 AM
Do you mean Override ?? So the ability to add a switch to bring the fan/fans into play earlier ??


 :popcorn
Title: Re: Cooling Fans Overrun?
Post by: Brock on June 15, 2015, 08:26:43 AM
There is no facility to overide the fans thermo switch to bring the fan on early, that is fitted to the bike. However its relatively easy to fit a switch than can perform that function, though not normally needed.
Title: Re: Cooling Fans Overrun?
Post by: Biggles on June 15, 2015, 08:29:27 AM
There is no facility to overide the fans thermo switch to bring the fan on early, that is fitted tom the bike. However its relatively easy to fit a switch than can perform that function, though not normally needed.

The factory switch seems to be set pretty effectively, and they have proven quite reliable.
Title: Re: Cooling Fans Overrun?
Post by: edwardgoodwin on June 15, 2015, 04:00:34 PM
Hi ALL, many thanks for your responses. I should have made my question clearer I think.

I am thinking of an automatic cooling fans overrun such as occurs on some bikes so long as the stat dictates & whether the ignition is on or not. Apparently this was the arrangement on the 650 Deauville & the ST1100? Ed.  :slvr13
Title: Re: Cooling Fans Overrun?
Post by: saaz on June 15, 2015, 05:10:42 PM
The st1100 fans only work with ignition on. Not much point having the fans going when engine not running as the coolant is not circulating (it might a bit from convection currents but nowhere near like when running). Most cars are also like this. If the cooling system is operating properly should be no need.
Title: Re: Cooling Fans Overrun?
Post by: Biggles on June 15, 2015, 05:15:55 PM
I think it's only Buells that have that "run-on" feature.  And we know how weird they are!
Title: Re: Cooling Fans Overrun?
Post by: Brock on June 15, 2015, 05:52:16 PM
The wiring changes needed to perform this would be a bit of a challenge, and unless you are well versed in the dark arts of bike electrics, then trying to do it is fraught with danger.

The STs dont run hot, so having the fan come on to cool the radiator (thats all it would achieve) would be a waste of time and effort. Something else to consider, is the drain on the battery, as its a small battery you dont want it drained and be unable to restart when you most need it.
Title: Re: Cooling Fans Overrun?
Post by: edwardgoodwin on June 15, 2015, 06:24:09 PM
Many Thanks John ,Biggles & Brock. The recent overheating problem(failed cooling fans relay) has been cleared but left me a little wary of a repeat performance! This latest query was only the scoping of further information really.
Will probably settle for a," fans on" light until full confidence is restored.Ed.(Old Woman!) :-[
Title: Re: Cooling Fans Overrun?
Post by: pault on June 16, 2015, 08:00:07 PM
my 1100 switch died while trying to find the boat to Tassie. got a toggle switch from supercheap and bypassed it. done beside road, no choice.
Title: Re: Cooling Fans Overrun?
Post by: Pezzz on July 08, 2015, 02:58:47 AM
Mine failed in Norseman last year and fixed it by using a "Yorkie" ..... pretty certain that a Wombat, Turtle, and a Hoffy had some input as well :OldMan
Title: Re: Cooling Fans Overrun?
Post by: edwardgoodwin on July 08, 2015, 05:01:51 PM
Hi Pezz & thanks for your interesting post but can't find any of it in my 1957 phrasebook! Ed. :grin

Hi Again Pezz.Have eventually cracked the unusual names in your last post having now  seen them on the site.Only took me around four weeks! Ed. :grin