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Clutch or gearbox issue

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el__burro View Drop Down
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    Posted: 11 Jan 2020 at 12:30
Yes, me again..
This time is a mechanical issue.
I am aware of the (worst) clutch post on this forum but I am missing the diagnosis.
Over the last couple of rides I have experienced a few problems when shifting gears
- Gears not engaging or very difficult to engage.
- Dragging glutch in 3rd or at higher speed (mainly when hot)
- Jumpy clutch in 1st gear

+ when lever is pulled the clutch disengage normally

Are this the result of Clutch issues?

I had a similar experience with my BMW R80 with a broken pushrod.

Thanks
el__burro



Edited by el__burro - 11 Jan 2020 at 13:02
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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2020 at 15:18
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Dragging clutch . . . (mainly when hot)

Both my Tonti framed bikes were like this. Can be alleviated by careful adjustment of the clutch cable at BOTH ends, i.e. including the angle of the gearbox arm, but was never entirely eradicated. I found cable free play was critical, must not be too much or too little. You'd think tightening it up (e.g. knurled knob at handlbar lever) would make the clutch disengage more freely, but it doesn't, instead it makes it worse, harder to pull and more 'draggy'. My R80's clutch was always much superior, much lighter to pull and no dragging ever. However I latterly improved the Guzzi's clutch enormously by fitting a completely different handlebar lever, and a new cable. Nothing wrong with the 'old' cable but the difference was profound! Especially the lightness of the action (lever pull).

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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2020 at 15:21
PS: I should mention that initially, my second 850 when I got it had badly worn gearbox boss splines, this made the clutch very draggy indeed! In fact, in gear, engine off, clutch pulled, I couldn't push it backwards, clutch would lock up and stop it like a brake.


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George S View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote George S Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2020 at 16:02
I agree with Mike. Three months after fitting new clutch had trouble putting into neutral after clutch bedded in. Careful cable adjustment both ends cured problem. Free play critical.
George

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el__burro View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote el__burro Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2020 at 17:09
I' ll try adjusting free play at both end tomorrow.
If that fails Cry
Thanks
el__burro
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Brian UK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jan 2020 at 21:40
Start with checking the angle of the clutch arm at the gearbox. Should be at right angles to the cable.
Brian.

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Mike H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2020 at 13:48
Yes, there is an adjuster screw with locknut, that presses on the end of the clutch pushrod. I'm assuming same as the newer Tonti models. 

"Chicken nuggets don't dance on a Tuesday."
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