December 12, 201411 yr Hi, this had probably been talked about to death but I am fairly new to trials and was just wondering people's thoughts on bi passing the thermostat and running a fan continuosly ? Other than wearing a fan out now and again is anything else likely to go wrong ? Good or bad idea ? Any advice would be much appreciated Thanks for looking
December 12, 201411 yr The thermostat is there for a reason. Your engine might not reach its optimum working temperature. Also: Why would you want to do it?
December 12, 201411 yr Author Yeah totally agree with te engine not making the best running temp . Was just thinking at it from a fail safe point I view really . Just goin through the whole " does my fan kick in " thing on my sherco I have rescently bought . Fan works but after running it up idle for 8 mins it doesn't kick in ...!? Been out on it a few times with no overheating issues . Gonna test the stat this wk end
December 12, 201411 yr Fan will wear out quicker if run continuously, so might not be a good failsafe move.
December 12, 201411 yr When the 1995 Fantic section came out, they had a crap thermostat. We always wired the fan on. Never saw one need to be replaced.
December 12, 201411 yr If you run the bike just at idle at this time of year the fan wont cut it and thats normal. When doing the ssdt i always did two mods related to this issue. 1 put a switch into the circuit to the stat so you can easily bypass it should it fail. 2 if the bike has a pressure cap fit a longer hose and route it so that if coolant leaks it will drop onto the front pipe and you will notice. Since watercooled bikes came in i have only ever had one stat fail, that was on a scorpa sy250. Edited December 12, 201411 yr by baldilocks
December 12, 201411 yr Ps check coolant, you haven't mentioned the year of your bike ? Recent model shercos have the stat at the top of the rad so if coolant is really low it may not heat the stat enough
December 12, 201411 yr Author Yeah I was wondering wether or not it would click in just being ran up idle ( in winter time ) It's a 2003 sherco 290 .
December 12, 201411 yr It wont get hot enough on tickover you need to be riding the bike for a start. Take it up some hills or along a track. Listen to the engine if it starts pinking more then it's getting hot. You can use a longer breather hose on that model
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