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Clunk when letting out quickly

PostAuthor: donthedec » Tue Jul 30, 2019 4:31 pm

Hi all
I have a clunk when letting clutch out quickly I can't feel any play in driveshaft.
Been told it's normal due to some damping rod reaching its end !!
Is that correct

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Re: Clunk when letting out quickly

PostAuthor: Arjay » Tue Jul 30, 2019 4:58 pm

Someone else more qualified than me will have good info, but mine clunks sometimes when shifting into gear. Hearing a clunk at clutch release sounds like clutch plate issues, maybe, just guessing.

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Re: Clunk when letting out quickly

PostAuthor: bstig60 » Tue Jul 30, 2019 5:27 pm

Have you greased the splines on the driveshaft and checked the U-joint(s)?
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Re: Clunk when letting out quickly

PostAuthor: donthedec » Tue Jul 30, 2019 6:06 pm

Thanks lads I will check out clutch and grease splines
Will keep you posted

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Re: Clunk when letting out quickly

PostAuthor: Arjay » Tue Jul 30, 2019 8:09 pm

Just thinking about this, if you have too much wear in differential spline, the whole differential is cheap these days on ebay. I bought one for $8 us off ebay.

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Re: Clunk when letting out quickly

PostAuthor: donthedec » Wed Jul 31, 2019 12:46 pm

Thanks will keep you posted

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Re: Clunk when letting out quickly

PostAuthor: donthedec » Wed Jul 31, 2019 1:29 pm

Hi if I need a drive shaft there is a lot for sale but all in the usa.
I've been told a 750 is the same as a Xv1100 uk
And someone has put me onto one for sale in the uk .
Was just double checking if that's correct?

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Re: Clunk when letting out quickly

PostAuthor: Jake » Wed Jul 31, 2019 2:43 pm

donthedec wrote:I've been told a 750 is the same as a Xv1100 uk
And someone has put me onto one for sale in the uk .
Was just double checking if that's correct?


That is correct. All 700/750 through 1100 from 1984 to 1999 have the same drive shaft.
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Re: Clunk when letting out quickly

PostAuthor: Flyingdog » Thu Aug 01, 2019 5:43 pm

Before you get to knee deep in tearing things apart, you may wanna try spraying some white lithium grease on the 6 dampeners in the hub. And make sure there is grease (axle/wheel bearing..no moly) on the hubs' splines that mate with the pumpkin's inner gear. Then have at it with the driveshaft if that doesn't work. How much freeplay do you have in the clutch lever at the grips. Sometimes if you only have a very some amount of freeplay, some have a tendency to over rev, letting out the clutch and it actually become a harsh dump'n action at the very last 1/8" of throw or so..instead of a smooth slip/take off. Cuz ya have to release the clutch lever sooo far before any friction point is made. This can give ya an odd lash/semi-clunk. May or maynot be anything related, but you saying you have "no" lash in the drive, kinda points to other than driveshaft connection. Specially if you can't hear/feel any clunk'n rotating the wheel, back & forth..in gear.
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Re: Clunk when letting out quickly

PostAuthor: donthedec » Fri Aug 09, 2019 7:46 am

Hi lads
I've just checked again the drive shaft while bike Is on stand and it seems to have a lot of play while moving wheel backwards and forwards is that normal on these bikes ?

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Re: Clunk when letting out quickly

PostAuthor: EightySeven700 » Fri Aug 09, 2019 5:15 pm

donthedec wrote:Hi lads
I've just checked again the drive shaft while bike Is on stand and it seems to have a lot of play while moving wheel backwards and forwards is that normal on these bikes ?



I just walked out in the garage and spun my back wheel back and forth and I felt ZERO play if that helps.
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Re: Clunk when letting out quickly

PostAuthor: Cusstout 1100 » Fri Aug 09, 2019 8:19 pm

I just checked both my '97 1100 and '85 1000 in first gear on centre stand and they both have considerable forward/backward rotational slack at the back wheel. So I'm guessing that's normal; the 1100 has close to 90,000 kms on it and the 1000 only about 60,000. So with both having about the same amount of slack, I'm guessing that's normal for these bikes. And neither one goes "clunk" when taking off or how hard or fast i shift between gears.
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Re: Clunk when letting out quickly

PostAuthor: donthedec » Sat Aug 10, 2019 2:14 am

Thanks
I've just seen a youtube on play at back wheel while on stand and in gear looks the same as mine.
Think my clunk needs investigating.
Will keep you posted
Regards
Don

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Re: Clunk when letting out quickly

PostAuthor: donthedec » Sat Aug 10, 2019 6:16 am

I've been told the clunk Is coming from a spring loaded damper on the jackshaft driving the driveshaft when shock loading the drivetrain with a sudden start the damper will clunk when it reaches the end of its travel !!

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Re: Clunk when letting out quickly

PostAuthor: mark75 » Sat Aug 10, 2019 2:19 pm

:huh?: don't remember an issue exactly like this before. :ider:

JMO: obviously some lash has developed, but the question is where it's from and is it fatal?

the XV drive-train historically is very tough (almost 'bullet-proof') with few complaints in that area. [I only remember a couple (<5) while I've been here]
>>> https://www.mrcycles.com/oemparts/a/yam ... drive-gear
>>> https://www.mrcycles.com/oemparts/a/yam ... rive-shaft

I would (at next oil change) pull the right-side cover and have a look at the clutch, paying special attention to the C. spring #31 (JMO: single spring is < good), also check the push-rod
(from #18 to #9) for burrs and proper, easy movement. >>> https://www.mrcycles.com/oemparts/a/yam ... e5c/clutch
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Re: Clunk when letting out quickly

PostAuthor: donthedec » Sun Aug 11, 2019 3:07 am

thanks Mark I will keep you posted

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Re: Clunk when letting out quickly

PostAuthor: donthedec » Sun Aug 11, 2019 6:37 am

I've just checked again and it only clunks when you drop the clutch ! It's fine on normal pull away.
So I'm taking it to a trusted good mechanic I know tomorrow. a big thank you for everybody's advice and will keep you posted

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Re: Clunk when letting out quickly

PostAuthor: mark75 » Sun Aug 11, 2019 3:18 pm

a FWIW post, but nearly all bikes I ever rode will "clunk" to some degree when 1st gear is engaged the first-time from start-up. [not sure if that relates to the issue you are experiencing]
"Over the Mountains of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride" ... E.A. Poe


Time flies >>> whether you're having fun __ :bike: or not :fan: ---

Any day above ground is a good day.
so Laissez les bon temps roulez ... just roll safely
Semper Vigilans...always watchful

"I hear and I forget, I see and I remember, I do and I understand." ... Confucius*

If you don't read the news you are not informed.
If you read the news you are misinformed.
... Mark Twain


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*The views, opinions, and experiences expressed in this post are mine and may not necessarily represent views and opinions of other VTF members, so feel free to agree, disagree, or ignore them.*
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Re: Clunk when letting out quickly

PostAuthor: donthedec » Mon Aug 12, 2019 9:14 am

Hi all
I took bike to mechanic I know today and he has come to the same conclusion as mark it's coming from the clutch and the backlash at the back wheel is normal for a shaft drive. so happy days once again thanks everyone for the import.
Regards
Don

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