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Offline AvgBear

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Re: Noisy clutch basket
« Reply #10 on: July 15, 2020, 05:52:29 PM »
The T800's Primary gear drive (from crankshaft to clutch) is a, normally somewhat noisey, straight-cut gear drive -- but, it is "spring-loaded" in order to keep it quiet.
The clutch basket, when engaged (h/bar lever released), is quiet b/c the clutch springs press everything together. The clutch plates can, however, rattle in the basket's grooves - if sufficiently worn? - when the clutch is released (h/bar lever pulled-in).
When the engine is running in neutral with clutch engaged the transmission's input shaft is turning. First gear's pinion is cut (affixed) to the input shaft and, so, is also turning. That 1st gear pinion is driving the 1st gear on the output shaft which is running free (since not engaged by a shift-fork) on a bushing on the output shaft. If that bushing is worn?, some noise may be produced.
Other gears may be turning - some on bushings - as well?
Another source (from the gearbox) could be due to the shifting drum not being fully "detented" and allowing shift-forks to be sliding components into improper locations? Fairly easy to check the shift-drum detent location.
There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.
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Offline AvgBear

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Re: Noisy clutch basket
« Reply #11 on: July 15, 2020, 11:03:05 PM »
n.b. From the above ^^^: "when the clutch is released (h/bar lever pulled-in)" = clutch disengaged.
There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.
WSC

Online Alan215

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Re: Noisy clutch basket
« Reply #12 on: July 16, 2020, 07:36:18 AM »
Ok when in neutral clutch leaver not pulled on the h/bar IT is noisy noticed low revs 2-3000 it seems gravely vibrations if u know what I mean

Offline AvgBear

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Re: Noisy clutch basket
« Reply #13 on: July 16, 2020, 11:00:15 PM »
Okay, clutch lever not pulled in (clutch engaged) means that the transmission's input shaft in the gearbox is turning along with a gear (or two? and a bushing or two?). The transmission's output shaft is not turning b/c neutral is selected (and it has the sprocket & chain).
The clutch is removed as a noise source b/c it is "engaged" (springs pushing all the parts together) and has no free, moving, parts inside.
This leaves transmission parts as the probable source of any noise? 
There are a terrible lot of lies going about the world, and the worst of it is that half of them are true.
WSC

Online Alan215

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Re: Noisy clutch basket
« Reply #14 on: August 06, 2020, 05:52:51 PM »
Hello again Ive had a garage check this out and he says its normal he started it up and revel it to about 3000 so was happy but now Im finding when riding it at about the 3000 in 1st 2nd it sounds like a straight cut gear box u would have on a car so does this shed any light on what it could be or again am I paranoid
Thanks

 


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