Join Date: May 2018
Location: I live in the UK in South Yorkshire in a town called Rotherham
Another elastic-trickery problem.
Having said that the wife sometimes has a sputtering problem when I ride her hard Boom Boom :+)
1/ I reckon when your fan kicks in, it is drawing too much power. Ist thing to do is get the power in watt that your alternator kicks out. Then add up alll the devices on your bike which use that power. If it comes close to your alternator output then your fan is the straw which breaks the camels back.
2/ bad earth on the fan, bad earth on the bike, check all earths and fan wiring, check battery terminals (nice and tight-no corrosion)
3/ charging system on the fritz not producing the output it should be check with multi-meter.
I am no electric guru but they are the starts that I would make. There is a lot more expertise on here and I am sure some of those guys will be along to help out shortly.
Last edited by Wavey Dave; 05-20-2019 at 10:47 AM.