Strange vibration on my R1100S

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GerryB
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Strange vibration on my R1100S

Postby GerryB » Sun Feb 27, 2022 1:27 pm

My bike , now over 60 thousand miles seems to have developed more than a tingle when riding , mid rev range.

Before I pop the wheels off, new tyres last year, to re-check balance, any other suggestions ?

I think the prop shaft needs synchro, because since the day I bought it, its had a weird feel in the gears up to 6th where its smooth.
Almost like a Vrrr Vrrr , so after seeing a few you choob experts saying BMW often send the bikes out of the factory with the UJs not properly aligned , I'd imagine that's that cause .

However, this vibration I've become aware of over time. Even my GF said she is aware of it now !! :shock: :cyclopsani: :cyclopsani:

During the week, I'll get it up on the table, and start looking .
Old man ... now .
Ex Off Road & Enduro Rider...

SP250
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Re: Strange vibration on my R1100S

Postby SP250 » Sun Feb 27, 2022 6:24 pm

Maybe unbalanced throttle bodies - an easy fix before stripping down other stuff.
Worth a check.
John M

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GerryB
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Re: Strange vibration on my R1100S

Postby GerryB » Mon Feb 28, 2022 9:19 am

SP250 wrote:Maybe unbalanced throttle bodies - an easy fix before stripping down other stuff.
Worth a check.


Thanks, I was kind of wondering if that could cause an unknown vibration !!
Old man ... now .

Ex Off Road & Enduro Rider...

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jeznewsome
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Re: Strange vibration on my R1100S

Postby jeznewsome » Mon Feb 28, 2022 8:57 pm

Oh no...I hope you find the problem Gerry

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GerryB
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Re: Strange vibration on my R1100S

Postby GerryB » Tue Mar 01, 2022 6:18 am

jeznewsome wrote:Oh no...I hope you find the problem Gerry


Thanks Jez .
Old man ... now .

Ex Off Road & Enduro Rider...

Mitch1100
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Re: Strange vibration on my R1100S

Postby Mitch1100 » Tue Mar 01, 2022 11:52 pm

Carpal tunnel syndrome :wink:
2009 HP2 Sport...sold
2006 R1200s with yellow rim tape
2008 Ducati Monster S4RS Tricolore..sold
2004 R1100s BoxerCup Replika..sold
2006 Subaru WRX STI S204 #318/600

SP250
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Re: Strange vibration on my R1100S

Postby SP250 » Wed Mar 02, 2022 9:41 am

Didn't know the boxer engine had a carpal tunnel - is that where the cam chains run?
John M

dave the german
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Re: Strange vibration on my R1100S

Postby dave the german » Wed Mar 02, 2022 10:02 pm

SP250 wrote:Didn't know the boxer engine had a carpal tunnel - is that where the cam chains run?


:lol:
'15 R1200GS TE
'06 R1200S
'04 BCR
Yam SR 500 long term restoration
wanna win the lottery and ride my bike

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GerryB
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Re: Strange vibration on my R1100S

Postby GerryB » Thu Mar 03, 2022 9:25 am

Saggy Tits (2).jpg
Saggy Tits (2).jpg (136.13 KiB) Viewed 9386 times
Old man ... now .

Ex Off Road & Enduro Rider...

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GerryB
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Re: Strange vibration on my R1100S

Postby GerryB » Thu Mar 03, 2022 4:05 pm

jeznewsome wrote:Oh no...I hope you find the problem Gerry


Well, I decided to set the throttles up manually as I can't get to Justin till tuesday

Did all the usual , idle screws , then remove the intake tubes.

Put a thin bicycle spoke under each slide, then slowly opened throttle until one moved.
Adjusted cables until they both moved same time .

Put everything back.

Started , easily ??? Idles smooth, pick up smooth so took it for a ride !!!

What a difference , absolutely great, slight vibration in the bars over 100 mph, otherwise absolutely great to ride again !!

Idle screws, one less the 1& half, one just over 1& half . Now both 1& half out .

One throttle opening about 1.5mm before other one . So, when it goes on the gauges, I'll be interested to see how much adjustment will be needed .
Old man ... now .

Ex Off Road & Enduro Rider...

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jeznewsome
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Re: Strange vibration on my R1100S

Postby jeznewsome » Thu Mar 03, 2022 9:30 pm

Great work Gerry :D. I did balance the TBs with a carbtune but that was a long time ago!

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GerryB
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Re: Strange vibration on my R1100S

Postby GerryB » Fri Mar 04, 2022 8:11 am

jeznewsome wrote:Great work Gerry :D. I did balance the TBs with a carbtune but that was a long time ago!


It was something I never touched , but as I said, slowly over time you become aware of a vibration !

Just goes to show just how resilient these bikes are, so many years , over 60 thousand miles .

Mind you, I've never thrashed it, other than a few brief spells of "the devil made me do it your honour"
its been ridden with care and mechanical sympathy .
Old man ... now .

Ex Off Road & Enduro Rider...

Mitch1100
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Re: Strange vibration on my R1100S

Postby Mitch1100 » Fri Mar 04, 2022 10:47 pm

Well sorted :wink:
2009 HP2 Sport...sold
2006 R1200s with yellow rim tape
2008 Ducati Monster S4RS Tricolore..sold
2004 R1100s BoxerCup Replika..sold
2006 Subaru WRX STI S204 #318/600

Humbug
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Re: Strange vibration on my R1100S

Postby Humbug » Sat Mar 05, 2022 9:16 am

Had mine checked at 90,000 miles and the mechanic said that they were bob on. I have never touched them or fiddled before so it seems to have managed all on its own. Its been thrashed within an inch of its life on trackdays, toured the Pyrenees a couple of times and performed in all weathers. Yes I have had a new oil cooler, front wheel, shaft etc but overall considering the life its had I'm not going to complain.
10 KTM RC8


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