@Calum cheers... I know there are plenty of full sets including the stator generator but I was looking for just a new pick-up part due to the metal face being warn down by the tab on the flywheel when it came loose.
Once I can get the flywheel off I'll see how the current one fends - I might be able to manipulate it to still get the correct spacing for it to work.
This is what I was looking at
https://www.hpi.be/pickup.php
@Calum everything seems to be right. Ypvs works. I pulled out the plug yesterday, on the end of the ground electrode there were a small bit of carbon, i thought that was causing the problem. I swapped the plug, and same thing happens when the bike gets hot. Could it be pre ignition? I've read that carbon deposits on the piston could cause pre ignition when the bike heats up.
My thoughts are the standard airbox is quite sufficient if you remove the snorkel. you would only benefit from making that hole another few centimetres bigger and thats if you were fitting a larger carb which wouldn't really have much benefit unless you had atleast mild porting or head work zeeltronic ect ..
@Glynn123 You said in my other post about me porting your cylinder, I advise you to send me the head aswell to get it machined to spec and derestrict it, as for rings, can't beat yamaha original ones for stock yamaha piston.