cjatwell Posted August 6, 2010 Report Share Posted August 6, 2010 Hi. I have a 2008 Beta rev 3. Lately she has been boiling up due to the fan speed not running high enough. Thermostat ok Regulator ok (New). Checked the fan unit on a 12v Battery out of the bike , and it spins like hell. So why is my fan not spinning fast enough on the bike? ( i can stop it with my little finger) This is wrecking my heed. All help greatly appreciated. Quote Link to comment Share on other sites More sharing options...
paul w Posted August 6, 2010 Report Share Posted August 6, 2010 Start the bike and check the voltage coming from the stator, if the fan is spining on a battery the problem is supplied current. Quote Link to comment Share on other sites More sharing options...
cjatwell Posted August 6, 2010 Author Report Share Posted August 6, 2010 Does anyone know what the current from the stator should be ? Quote Link to comment Share on other sites More sharing options...
houseape1000 Posted August 6, 2010 Report Share Posted August 6, 2010 Is the fan secure on the shaft ? Quote Link to comment Share on other sites More sharing options...
tt5th Posted August 6, 2010 Report Share Posted August 6, 2010 Shaft Quote Link to comment Share on other sites More sharing options...
ripa Posted August 6, 2010 Report Share Posted August 6, 2010 Hi Problems with electrics is always a pain in the ass. I had same problem with my evo 4T. The fan was spinning very slowly. The other symptom was that the engine stopped when the fan started. With high revs the engine did not stop but the fan was not spinning like it should. http://www.trialscentral.com/forums/index....showtopic=31686 You can find the capacitor on top of the carb in 4t, don Quote Link to comment Share on other sites More sharing options...
pete_scorpa3 Posted August 7, 2010 Report Share Posted August 7, 2010 Only a 'shot in the dark' idea.... If you still have the wiring for the headlight, you could try running a wire from it's supply to the fan, turn the headlight switch on and the fan would work. This won't cure your voltage supply issues to the fan but it might just provide a temporary cure. If the fan still turns slowly, then the supply to the headlight is compramised too. Quote Link to comment Share on other sites More sharing options...
cjatwell Posted August 14, 2010 Author Report Share Posted August 14, 2010 So.... Narrowed it after a long time to a faulty thermo switch on the radiator. Fitting one next week so will know for sure then Quote Link to comment Share on other sites More sharing options...
cjatwell Posted August 19, 2010 Author Report Share Posted August 19, 2010 The problem was cured with the new Thermostat fitting at the bottom of the radiator. All good now .. i hope. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.