pudrev3 Posted December 13, 2015 Report Share Posted December 13, 2015 Hey guys I've had a problem with my fan coming on . It's a 2014 beta Evo 4t , I took the waterpump off to find the impeller wasn't there , anyway I've ordered a new one and I've just heard that somebody updated the fan speed by installing a maplin rectifier with higher voltage that makes the fan run at a higher speed , does anybody know anything about this and if so what is the part I need to order ? Cheers folks Quote Link to comment Share on other sites More sharing options...
moleman Posted December 13, 2015 Report Share Posted December 13, 2015 4700 uF 35v 105c radial electrolytic capacitor £1.15 Maplins Not a rectifier... , uprated ? original is 25v but I have used this and noticed no difference at all in fan speed, I picked it as it was slightly physically larger and has a high temp rating which affects working life (in my opinion more important than the voltage, try not to get one rated below 105c) , I tried a 25v smaller cheaper one and found it ran hot (the capacitor) so tried this one and it runs a lot cooler , also I moved it out of the sleeving and repositioned above carb top with connectors . symptoms included : intermittent fuel shutting off and varying fan speed , finally, misfire and bogging under heavy throttle Quote Link to comment Share on other sites More sharing options...
pudrev3 Posted December 13, 2015 Author Report Share Posted December 13, 2015 Cheers for reply matey , what do you mean symptoms? Does it affect the performance and does it replace the rectifier ? Sorry I'm new to this Quote Link to comment Share on other sites More sharing options...
moleman Posted December 13, 2015 Report Share Posted December 13, 2015 Symptoms of failure of capacitor Performance will be the same It doesn't replace reg/ rectifier , it is a component of the electrical system that you already have fitted , it can fail and if it does it can bè replaced with the maplins item "If" it fails and you replace it with the higher rated one it "may" cause the fan to run faster , though I don't see how it could , it certainly doesn't on mine The regulater rectifier unit would control max voltage and therefore fan speed The capacitor is well in the harness and although not hard to replace it's not something I would suggest should be attempted unless you are confident in your own ability If it is an attempt to get the fan running faster then don't waste your time Fix the root cause first Quote Link to comment Share on other sites More sharing options...
pudrev3 Posted December 13, 2015 Author Report Share Posted December 13, 2015 Ok mate I understand now thanks very much for the advise much appreciated Quote Link to comment Share on other sites More sharing options...
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