bumblebeemer

By way of an update, I have fitted a new water pump seal as well as a new thermostat. I changed the oil three times. Bike was ridden today in total for approximately 4 hours. The fan comes on . There is no overheating despite the high temperatures we are having today. There is no water in the oil. Thanks all.

Thanks for your advice guys. I have ordered a water pump repair kit.

Bike overheated whilst using it yesterday riding very slow obstacles. I share the bike with another rider so it is running continuously for an hour or so at a time. Coolant overflowed. Noticed fan was not coming on so I revved the engine and the fan came on. I let the bike cool down and then rode the bike again for about an hour and the coolant overflowed again. I went on a fast run and the fan came on. I increased the idle speed and there were no further issues with the fan although the obstacles were ridden a bit faster with more breaks in between bike running. When I got home I notice the oil had turned a milky colour (I had changed the oil the day before) and condensation could be seen through the oil sight glass . So, I have a few questions. (1) Is the fan or thermostat or rectifier on the way out or has by simply increasing the idle speed, fixed the fan issue ? i.e. was the engine not running fast enough to give enough power to the fan ? or is it that they are not designed to be ridden slowly for such long periods? (2) Although I have a volt meter I am not electrically minded to know how to check whether it is the thermostat or not so which should I buy first , the thermostat or rectifier? (3) should I replace the water pump seal and shaft ? was the seal damaged by the over heating ? or is it a coincidence that the shaft/seal have gone at the same time as the rectifier/thermostat ? Any help would be appreciated.

That is great advice guys. The message is loud and clear ... I need to practice. But where can I practice in teh Essex / Hertfordshire area ?

As title states I am new here and very keen to get into the sport. I have a road bike and have been riding for some years now , including commuting and touring. I also do a bit of green laning and now wish to move into the trials scene in order to improve my bike control, get out on a bike more, learn how to do a few tricks and possible compete in trials. I am after some advice. Firstly, I have not as yet chosen a bike yet. It would probably be a secondhand one and I have about