I found the single thermostat was of little use. During casual riding there is enough flow through one rad to keep the bike cool, so the thermostat doesn't do much. If you were riding hard and abusing the clutch, then it would get hot enough to open up. I removed my thermostat.
I have the Trail Tech Voyager and set the amber warning light for 160*F. I set the red warning light to 180*F. I got stuck on a hill on a very hot day and that was the only time I've ever had the amber light come on.
If you really want your bike to maintain temperature, you would need a thermostat on both sides. The temperature recording function shows that my engine stays at 130*F for most of my riding. I mounted a large Clarke tank and don't use shrouds. I do however have the Checkpoint alloy impeller.
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2011 EC250E
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