Bike update and 2 questions
I just picked my bike from the shop yesterday. To remind everyone the bike had a leaky oil seal (PITA) and some other smaller questions and issues.
So I took it to that little bike shop and told the guy to look into carbs and all the other maintenance items, possibly look into this oil leak, and overall just give the bike a full inspection and check what else it might need.
He adjusted the carbs, replaced air filters, lubed a few things, pulled and cleaned the petcock, and lubed the front and back splines. And charged me $200 for it which I thought was very cheap. The oil seal stopped leaking by itself so for now I'll just forget about it. He also said he took it for a few long rides and it was all good.
So this is good. And I took it out today for a more serious ride and have 2 questions. Hopefully someone can answer these.
1. When the engine is under load I can hear a whine/whistle. It doesn't happen in neutral or at the same speed with the clutch so it's definitely something drivetrain related. It happens at any gear and is related only to RPM and load. It doesn't sound too bad and at about 4k RPM you can't even hear it any more. What can this be? Should I just ignore this or something is going to explode on me?
2. Up to about 4k RPM the bike has no vibrations. Around 4k it starts vibrating and the peak seems to be around 4.5k. The vibration is not violent by any means but it's there. At around 6k I would say that it's reduced. Is this normal for these bikes?
Other than that it seems to run good, shifts good and I don't see any other issues with it.