love your sound effects! ::013::EricV said:
I get the same whine around 55-60 mph and in all three upper gears and yes, pull in the clutch and it goes away. I think this is a completely normal sound and that it's coming from the drive shaft pinion gear. There are lots of gears in this engine and most of them are straight cut. Straight cut gears as a general rule are noisier in comparison to helical cut gears.kraigd said:
kraigd said:
I did not think about the synthetic idea, A friend of mine has the same bike but is running non syn and yes it does seem to have less of a whine. Being I ride long very fast days I feel syn will give me what I need and I change my oil every 5 k so let the whine be.~TABASCO~ said:
I'm running the Yamalube stuff (10W-40). Changing to synthetic at the next oil change.~TABASCO~ said:
I am running Yamalube full syn. But 12.00 a qt ouch. I have a friend who is a research junkie and MC Nut. He runs Rotela T6 full syn in all his bikes. It is 21 dollars for a Jug that is 4 plus qts at Walmart. It meets all req of Yamaha and all metric bikes, it is reported to be fantastic stuff. He has well over 200k miles running this oil and has never had a problem. So I am going to use it. Amzoil in the final drive.behindbars said:
Congrats on getting your bike fixed and being satisfied. It sounds like they did an outstanding job.Simon said:Today i got my bike back from the dealer, one week earlier than he predicted - i'm impressed. You couldn't tell they had taken her apart expect for the copper grease lube on the rear engine bolts - a really nice job.
What they did:
> Remove engine, remove lower crankcase halve, remove gearbox main and lay shafts
> Fit new fifth gear on main and lay shaft
> Rebuild and refit engine
What they found:
> Visual inspection only between old and new parts showed difference in machining marks on the old fifth gear part (only one of them but they could not tell me if it was the main or lay shaft gear - already sent back to Yamaha UK). Essentially they observed unexpected marks on one of the old fifth gears and confirmed the replacement part did not have the marks. (Sorry - i could not get any photos, i can understand their reluctance)
Result:
> Dealership owner rode my bike 'before', rode a 'Yamaha UK bike' and rode my bike 'after', he reports no noise now present in fith gear and bike sounds just like the 'Yamaha UK' bike he borrowed.
> I've ridden the bike only a few miles so far, again no sign of the whine, i'll put some more miles on tomorrow hopefully to check it out a bit more.
So in summary, i'm glad i had it checked out, it seems to be fixed, the dealer was excellent, and i'll keep you posted after a few more miles on the new gears.
Correct me if I'm wrong, but a 'difference in machining marks' is neither a faillure of the gear nor necessarily any sign of impending failure. If there was no scuffing, wear or surface fatigue on the gears, than maybe the only 'problem' you had was a whine. Glad to hear you won't have to worry about it anymore though.Simon said:Today i got my bike back from the dealer, one week earlier than he predicted - i'm impressed. You couldn't tell they had taken her apart expect for the copper grease lube on the rear engine bolts - a really nice job.
What they did:
> Remove engine, remove lower crankcase halve, remove gearbox main and lay shafts
> Fit new fifth gear on main and lay shaft
> Rebuild and refit engine
What they found:
> Visual inspection only between old and new parts showed difference in machining marks on the old fifth gear part (only one of them but they could not tell me if it was the main or lay shaft gear - already sent back to Yamaha UK). Essentially they observed unexpected marks on one of the old fifth gears and confirmed the replacement part did not have the marks. (Sorry - i could not get any photos, i can understand their reluctance)
Result:
> Dealership owner rode my bike 'before', rode a 'Yamaha UK bike' and rode my bike 'after', he reports no noise now present in fith gear and bike sounds just like the 'Yamaha UK' bike he borrowed.
> I've ridden the bike only a few miles so far, again no sign of the whine, i'll put some more miles on tomorrow hopefully to check it out a bit more.
So in summary, i'm glad i had it checked out, it seems to be fixed, the dealer was excellent, and i'll keep you posted after a few more miles on the new gears.
I don't believe there was a Yamaha Tech there as well, but the dealer has been communicating with Yamaha UK throughout and i too am expecting them to be interested in the issue - Japanese manufacturers have some tough laws in their home market regarding warranty rates and what they have to declare and do about issues. I know from first hand experience how much attention the big Japanese car makers put into analysis of warranty failures - anything that can be learnt will, i'm confident about that.japako said:
I think you are correct to say that my only problem was the audible noise, i couldn't even tell you with certainty that i expected any mechanical failure further down the line, i'm just a bit of a perfectionist and have an expectation from working with Japanese car makers that 'every one is EXACTLY the same' - it's my experience of the results they get from the mindset they apply during development.Tremor38 said:
