Been riding my bike on a long commute since January (700 miles a week) and I've noticed my carbs have been getting progressively worse. The normal grumble between 6 -7k rpm now starts at 5k and starts to clear at 8 with a strong vibration through the frame.
Finally got round to a balance. Connected up the manometer started the bike and at idle no1 is sitting about right and the other 3 are all reading max on the gauges. Trying to adjust 1 increases rpm off idle; trying to adjust the other three stalls the engine due to low rpm.
Normally I'd say there was a leak on no1 but we've sprayed everywhere and there's no sign of any leaks at all. All the carb rubbers are less than a year old and were changed when the carbs were stripped, ultrasonically cleaned and rebuilt. Balancer hoses are a good fit with no leaks.
Anyone come across this before and offer any hints/clues at how to go on?
Only thing not standard on the bike that could affect this is possibly the exhaust. I've got a stainless exhaust from Sandyparts which doesn't have the balance pipes on the off-takes.
Finally got round to a balance. Connected up the manometer started the bike and at idle no1 is sitting about right and the other 3 are all reading max on the gauges. Trying to adjust 1 increases rpm off idle; trying to adjust the other three stalls the engine due to low rpm.
Normally I'd say there was a leak on no1 but we've sprayed everywhere and there's no sign of any leaks at all. All the carb rubbers are less than a year old and were changed when the carbs were stripped, ultrasonically cleaned and rebuilt. Balancer hoses are a good fit with no leaks.
Anyone come across this before and offer any hints/clues at how to go on?
Only thing not standard on the bike that could affect this is possibly the exhaust. I've got a stainless exhaust from Sandyparts which doesn't have the balance pipes on the off-takes.