Does anyone know at what temperature the thermostat opens? I have been assuming it must be around three bars, but now that doesn't seem right.
Printable View
Does anyone know at what temperature the thermostat opens? I have been assuming it must be around three bars, but now that doesn't seem right.
Does the service manual have a list of temperatures for the bars? Lamonster's new readings and others who have checked are showing four bars at 175 - 180 degrees and five bars at 190 - 200. Some of us have been assuming the post by Ken (Evoluzione) was correct. That has one bar = 153, two bars = 171, three bars = 163, four bars = 207, five bars = 223, six bars = 230 and seven bars = 237. As stated in the start of this thread, maybe the Spyder runs cooler than we thought. :dontknow:
It strikes me to wonder . . . I believe that the cooling system in a car engine has a central objective of keeping the car in a narrow range of temperatures to allow it to operate at high efficiency.
I know nothing about these type of engines -- but, the range of temperatures that this demonstrates is rather extreme in my mind's eye.
Is this type of engine designed to operate across a wider range of temperatures than car engines?
No list in the manual. These types of gauges are always approximate, so they will not read the same from bike to bike. I have always thought Ken's numbers were high, given that the thermostat obviously opens somewhere around 3 bars, and that temp is 167 degrees if the thermostat is up to snuff. On other bikes with this type of gauge I figure normal is about half the gauge, plus or minus a bar or two.
Motorcycle engines, even water-cooled versions do run at a wider range of temperatures than an automobile engine. These are not extreme, IMO.