PaulYDP
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 posted on 18/8/09 at 10:36 AM |
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Vibration
Hi guys,
I'm hoping someone can help me here.
I have a Tiger B6 running a zx9r engine, with a 7" 3.62 diff.
Ever since I built my car I have had a vibration from the drivetrain. It sounded like it was coming from the diff itself - I didn't know the
history of it as I bought the car as a part build, so I picked up another one and fitted it last night. My problem is still there.
Basically if i'm going along at 55 - 60 and lift off the throttle there is a rattle, but if I touch the throttle again it goes away. Also if I
reach an up-hill it goes away without touching the throttle - it seems if there is any load at all the rattle goes away. The main problem however is
when the car reaches around 90mph (on track) the rattle becomes constant and the car actually vibrates.
The only thing I can think of now since I replaced the diff is the propshaft. I got the prop shortened and balanced when building the car.
As anyone experienced anything similar?
Thanks in advance,
Paul
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Davey D
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| posted on 18/8/09 at 11:13 AM |
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mine has started to develop this.
when the drivetrain is under load from acceleration, or engine braking it is silent, but when cruising at any speed over 65ish and im at neutral
throttle there is a strange vibration/rattle that sounds like its coming from the Diff. i havent had chance to look at it yet, so im affraid im no
help
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PaulYDP
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| posted on 18/8/09 at 11:23 AM |
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Cheers for the reply anyway Davey, if you discover what it is be sure to let me know as your problem sounds exactly like mine! At least i'm not
alone.
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Hellfire
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| posted on 18/8/09 at 12:16 PM |
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Not sure whether it is BEC related or not but as the bike's have a cush drive in the drivetrain do either of you have a TRT to replicate this
cushioning therefore reducing the rattle?
I'd also check your respective adapter flanges...
I suspect the vibration is the prop - as it is floating in the central bearing - any out of balance will be exacerbated and result in the harmonics
throwing it down the prop to the nearest sound board - that being the rear bulk head. That's maybe why it sounds like it is coming from the
Diff...
Is the diff LSD? Has it been checked/adjusted for reduced slip? Tho' this wouldn't/shouldn't produce vibration me thinks...
Steve
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