03-18-2017, 08:23 AM | #16 |
Join Date: Oct 2016
Posts: 347
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The smaller the engine the greater the effect when the fans kick in / out or when the thermostat opens / closes. A 250cc engine doesn't make all that much heat so external forces will influence it very quickly.
Combine that with an imprecise digital gauge (only 5 bars to indicate the relative heat) and it may look like its bouncing around at certain times. Imagine if a heat value of 1 = 1 bar on the display & 5 = 5 bars heat, if the value is fluctuating between 2.999 and 3.001 the display will be bouncing between 2 and 3 bars even though the change in heat would be unnoticeable with an old school analog gauge. This is a common problem with digital displays. |
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03-19-2017, 06:28 PM | #17 |
Join Date: Feb 2017
Location: Dannevirke, New Zealand
Posts: 47
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Thanks
I appreciate the responses. I hadn't thought through the digital gauge thing. I suppose that explains the rather pessimistic fuel gauge too.
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03-19-2017, 08:16 PM | #18 | |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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05-09-2017, 11:02 PM | #19 | |
Join Date: Mar 2017
Location: west Sacramento, ca
Posts: 36
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Low on coolant already? (600miles)
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I barely noticed at mile 600ish that my coolant overflow bottle is about an inch below the Low mark when cold, and after returning from a 15 minute ride. I guess this means I shouldn't be too worried about coolant loss and just top it off then? Should I top off the radiator or should I add enough antifreeze to reach the L mark? |
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05-09-2017, 11:45 PM | #20 | |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Quote:
The easiest way to top off the overflow bottle is to remove the overflow hose from the radiator, insert a small funnel in the hose, and pour coolant into the funnel.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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09-01-2017, 10:37 PM | #21 |
Join Date: Oct 2015
Location: Dixon, CA
Posts: 75
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Anyone have a quick way to test the fans? It's over 100 around here, and confirming their operation would make me happy. My BMW overheated once when the fan siezed up, and that was a drag.
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09-02-2017, 10:52 AM | #22 | |
Join Date: Feb 2016
Location: Portsmouth, Virginia, USA
Posts: 632
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Quote:
Peter Y. |
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09-02-2017, 02:43 PM | #23 | |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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Two testy bits. 1. Unplug the connector from the bottom of the left radiator and with ignition turned to On, jump the two connectors in the wiring harness. Fans should do the whirly-gig jug. 2. Just start the engine and let it idle while you sit idly by and watch the temperature hinting bit on the video display. When the fourth bar comes on or shortly thereafter (facetious big word thrown in there) the fans should both start spinulizing. Number 1 will not test the temperature switch function, just the fan operation. Good luck.
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09-03-2017, 01:10 PM | #25 | |
Join Date: Jul 2015
Location: Milpitas, CA. USA
Posts: 775
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Also on hot days, arriving home and leaving the engine running in the driveway while I go open the garage door, remove helmet & gloves, go back to bike to ride it in and just about then the fans kick in.
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