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SOTrident 900 drive noise

  
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A.Clews

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Since: Dec 24, 2005
Posts: 85



(Msg. 1) Posted: Fri Aug 24, 2007 3:25 pm
Post subject: SOTrident 900 drive noise
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Austin Shackles

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Since: Jan 13, 2007
Posts: 51



(Msg. 2) Posted: Fri Aug 24, 2007 5:17 pm
Post subject: Re: SOTrident 900 drive noise [Login to view extended thread Info.]
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On or around Fri, 24 Aug 2007 15:25:44 +0000 (UTC),
A.Clews.TakeThisOut@DENTURESsussex.ac.uk enlightened us thusly:

>My 1993 Trident 900 has done about 36,000 miles (that's right, it's not
>been heavily used in its 14 years...)
>
>I notice a certain amount of drivetrain noise, especially in top gear, but
>I'm not sure what part of the drivetrain is making this noise. It's a
>gentle but slightly graunchy-under-load whining sound, usually I would
>have thought indicative of worn gears, but wondered if it might be wheel
>bearings. The noise lessens if I de-clutch and coast, but it does
>markedly increase if I apply throttle under load. The noise is evident in
>4th and 5th gear too, but less easy to make out in lower gears because the
>engine noise drowns other sounds out. All of this is why I'm not sure
>if it's wheel bearings or a worn gearbox.
>

chain drive, ain't they...

does the 'box share the engine oil or have its own?
--
Austin Shackles. www.ddol-las.net my opinions are just that
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JB

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Since: May 30, 2005
Posts: 177



(Msg. 3) Posted: Fri Aug 24, 2007 9:12 pm
Post subject: Re: SOTrident 900 drive noise [Login to view extended thread Info.]
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wrote in message

> My 1993 Trident 900 has done about 36,000 miles (that's right, it's not
> been heavily used in its 14 years...)
>
> I notice a certain amount of drivetrain noise, especially in top gear, but
> I'm not sure what part of the drivetrain is making this noise. It's a
> gentle but slightly graunchy-under-load whining sound, usually I would
> have thought indicative of worn gears, but wondered if it might be wheel
> bearings. The noise lessens if I de-clutch and coast, but it does
> markedly increase if I apply throttle under load. The noise is evident in
> 4th and 5th gear too, but less easy to make out in lower gears because the
> engine noise drowns other sounds out. All of this is why I'm not sure
> if it's wheel bearings or a worn gearbox.
>
> Any thoughts, gentlemen? (I use the term loosely Smile
>
Sprocket carrier bearing?

JB
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Grimly Curmudgeon

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Since: Jan 04, 2007
Posts: 847



(Msg. 4) Posted: Fri Aug 24, 2007 9:27 pm
Post subject: Re: SOTrident 900 drive noise [Login to view extended thread Info.]
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A.Clews

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Since: Dec 24, 2005
Posts: 85



(Msg. 5) Posted: Sat Aug 25, 2007 7:24 am
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A.Clews

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Since: Dec 24, 2005
Posts: 85



(Msg. 6) Posted: Sat Aug 25, 2007 7:27 am
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JB

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Since: May 30, 2005
Posts: 177



(Msg. 7) Posted: Sat Aug 25, 2007 9:14 am
Post subject: Re: SOTrident 900 drive noise [Login to view extended thread Info.]
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wrote in message

> Thus spake JB (JB@nospam.co.uk) unto the assembled multitudes:
>
>> Sprocket carrier bearing?
>
> I did wonder whether it might be the gearbox sprocket.
>
> I did run it with a higher-ratio sprocket set for a few years (two extra
> teeth on rear sprocket I think). I wonder if the increased load might not
> have been so good for the 'box.
>
That's putting less load on the gearbox sprocket. You won't kill a box loke
that, unless you overtighten the chain to extremes.
No point guessing. Have the wheel out and check all 3 bearings. Then work
your way forward form there.


JB
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