250-500cc 2011 wr 300 thermostat

It does regulate it like a automotive set up. There is a waterpump that circulates it, the thermostat regulates the circulation. Granted it is a smaller capacity. In normal woods riding tight stuff, with hill climbs it is going to be open all the time but I could see on the transfer sections in the winter where the wind is freezing your face you could see where it could shut down to keep your engine at a normal operating temp. I have seen guys cover one radiator with cardboard at the Winter Hare Scrambles.

it works like a car thermostat...it helps keep the water up to a normal temp but doesn not cool it down once it goes over that temp...

well my bike should be here this week. i ll put up pic when it gets here. 2011 wr 300 on the way

You will notice it is there when it hangs shut ... I always did on my car / truck ... then it was just removed and tossed ...

Kelly describes a thermostat that opens by a spring weakened from heat, the automotive thermostat works by heating a wax chamber which expands and opposes spring pressure to open a valve. So which is it? I have not seen the motorcycle one but the automotive style is very reliable and usually will last 10 plus years and over 100k miles with daily use.

most thermo's work on a bi-metalic spring controlled by temperature.If you have a cooling system that works too efficiently i.e too cool then place a thermo control to inhibit cooling or switch on a fan to aid it.

http://en.wikipedia.org/wiki/Thermostat#Bimetal

Bimetal is the type used for your central heat an air unit and not generally found submerged in water.

Do you guys think a Trials bike thermo fan with a switch will work to help with hill climbs? how would i go about wiring it up to a WR250 2010?
i am fairly competent with working on the bike myself but wiring gets me a little. Do i need to splice some wires to squeeze in the thermo fan? will it have any side affects from sucking power?

how easy will hill climbs be if i get a Rekluse clutch and a thermo fan.


Cheers
Dave