Brace tat spans frame which holds shock mount .
I doubt it will be an issue but I'll keep an eye on it. You might wanna take a look at your bike, let me know if you find the same .
Potential frame issue.
Dalex
Brace tat spans frame which holds shock mount .
I doubt it will be an issue but I'll keep an eye on it. You might wanna take a look at your bike, let me know if you find the same .
81 - 100 of 144 Posts
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I think the point was to determine if it was isolated to later build dates, which this information has almost confirmed is the case.
They don't build them like they used to.
They don't build them like they used to.
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658 Posts
I would expect that Yamaha do all their own castings.After all,it was casting alloy piano frames that got them into vehicle manufacture.
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4,498 Posts
Yep, for one year they built them like they used to...
Well, probably for 6 months...
Well, probably for 6 months...
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658 Posts
Yamaha use controlled filling vacuum diecasting ,a technology they developed themselves.
A new die-cast method for manufacturing innovation "Yamaha CF Aluminum Die Casting Technology" Developed Making possible the mass production of large but thin aluminum die-cast parts - News Releases | YAMAHA MOTOR CO., LTD.
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marks in all the same spots as mentioned, can't see the manufacture date now but bought in March
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Those definitely look like casting flaws, not fractures. Probably just luck of the draw whether your parts were molded in a casting that has built up residual debris. That's my guess. Dirty castings in areas which have a higher chance of leaving behind material.
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Agreed. A shame that they've gotten so ugly.
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Yeah, I used to praise yamaha for their fit and finish, hiding welds, minimal bolts to hold body work etc. this is very disappointing to see. Yamaha still makes amazing machine though so oh well.
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766 Posts
I went out last night and looked at my 14's frame and it's nice and smooth. I suspect, like others, that later frames are just suffering from dirty-casting-itis.
I owned a 1991 and later a 1993 Honda CB750. I remember the wheel castings on the 93' were not as clean as the 1st year bike's.
I owned a 1991 and later a 1993 Honda CB750. I remember the wheel castings on the 93' were not as clean as the 1st year bike's.
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1,575 Posts
I have some here n there on my bike.
Same areas as others here.
A bit on the swingarm.
Casting issues.
Oh Well! Bike Rides Like A Champ!!!
BRAAP!!!
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1,806 Posts
it's not just later production runs.
here's mine, build date 10/13:
![Image]()
when i first noticed this early last year, i took a look at a few other fresh out of the crate 09's. they all had identical imperfections in the same place.
i don't worry about it and in fact i'd forgotten completely about it until this thread.
p.s. the flaws can be hard to spot unless the light hits it just right. so those of you with 'perfect' castings, don't go looking too hard for them, you're bound to find some somewhere. that's just the nature of mass production.
here's mine, build date 10/13:
when i first noticed this early last year, i took a look at a few other fresh out of the crate 09's. they all had identical imperfections in the same place.
i don't worry about it and in fact i'd forgotten completely about it until this thread.
p.s. the flaws can be hard to spot unless the light hits it just right. so those of you with 'perfect' castings, don't go looking too hard for them, you're bound to find some somewhere. that's just the nature of mass production.
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Yeah, but your steering head is a helluva lot cleaner than the later runs. I'm not saying the early ones are completely flawless, but they have gotten a lot uglier.
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