Something to think about...

Toyko is Japan's largest city, and probably (my speculation) has the highest concentration of bikes of all types. Average yearly temperature (bit of web research) is around 16°C (61°F), with a winter low of -1° (31°) and max recorded summer high of 42° (107°) in 2004.

The manufactures design the systems to at least cope with this variation in temperature... they have to! They can't say "here's the keys to your new 250/400/lemming-mobile, but you can only ride it between when the temperature is between 15°~30° in because our cooling system is crap!"...
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Andy.
NSR-WORLD.COM

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