fallenmikethebike wrote: That was the fan i used for my initial stab at the project , however the 2nd generation project had the slightly larger 80mm fan fitted , and no problems thus far .

Thanks for that it's worked a treat
Even in this type of going

Thank you very much for all the advices. I managed to install 80mm computer fans on my MK2 2 weeks ago, and went out riding in 32 degree celcius condition twice, it worked perfectly. I disconnected the hi-beam light wire and hooked it to supply the power to the fans, ie when I need to turn on the fans I just press the Hi-Low switch from low to hi, the headlight goes out and the fans is activated. The fans costs me HK$45, which is less than 3 British pound, the guy who sold me the fans claimed it is capable of 10000rpm. I don't know it is true but I can feel the fans really work. To give you some ideas on what condition we are dealing with in HK when riding off road for fun in every Sunday, you can see this http://www.youtube.com/watch?v=F_enl5m90cw" onclick="window.open(this.href);return false;

That's a great result Kinlee . You need a bigger Island to play on though mate .
Presumably all the Brits you kicked out a while back have now come back to blighty to stop us having as much fun as your having
regards Mike

Nice one Kinlee Cracking vid too mate