4th gear?

[MrFeldman]

Slight oscillating vibration in 4th gear between 40 and 60 mph, it’s not my new Metzler’s, wheels are balanced. Am I shopping for a transmission soon? ‘03 R1100s with slightly over 23,xxx miles. Extremely well maintained, I’ve owned it since the odometer read 2100 miles.
btw, if I was merely a highway warrior, this wouldn’t be much of an issue. But I’m more of a “twisty negotiator” and gears 3-4 are my go too cogs.

[wswartzwel]

4th at 30mph?

[Chris Canning]

Only ever had two issues sounding like the above the first was trying to running a 318mm Supersport shock with a stock front and the second was not balancing the TB’s as in every time I ride it,although in recent years with a Twinmax I can get it down too every other ride or not bother and put up with the resonance/Oscillation.

[va011101]

I have not experienced this first hand, but I have heard that assembling the crankshaft out of phase can cause a vibration like that. Has your final drive been been removed and reinstalled recently?

[JimMoore]

Both my S bikes did that. Sort of a "thrummm, thrummm, thrummm" feeling / noise . None of my other oilheads have that feature.

[MrFeldman]

Originally Posted by va011101

I have not experienced this first hand, but I have heard that assembling the crankshaft out of phase can cause a vibration like that. Has your final drive been been removed and reinstalled recently?

Final drive has never been taken apart, when I bought the 11s in ‘06 it still had the original air in the tires.

[MrFeldman]

Originally Posted by JimMoore

Both my S bikes did that. Sort of a "thrummm, thrummm, thrummm" feeling / noise . None of my other oilheads have that feature.

Did you figure out what the vibration was from. I can say that it’s not an audible , but I can feel it . I did install a set of Wilber’s on both front and rear couple years ago. Didn’t notice it initially, may be I should have the sag & rebound rechecked.

[va011101]

Originally Posted by MrFeldman

Final drive has never been taken apart, when I bought the 11s in ‘06 it still had the original air in the tires.

Then it’s probably not the driveshaft phasing.

[JimMoore]

Originally Posted by MrFeldman

Did you figure out what the vibration was from. I can say that it’s not an audible , but I can feel it . I did install a set of Wilber’s on both front and rear couple years ago. Didn’t notice it initially, may be I should have the sag & rebound rechecked.

I asked here and was told some version of "they all do that." I never worried about it after that.

[sgoodwin]

Change gears & go faster, cured.

[ckcarr]

Originally Posted by wswartzwel

4th at 30mph?

Originally Posted by sgoodwin

Change gears & go faster, cured.

Agree.

[tomvv11]

Originally Posted by wswartzwel

4th at 30mph?

Did you mean, "How does it behave at 30mph in 4th?" or, "Why the heck are you driving at 30mph in 4th?"
OP said between 40 and 60mph, which is in a healthy rpm range for 4th gear.

[Alfa145V6]

OP edited the post. Possibly changed the numbers judging from the reply.

[wswartzwel]

Yes he changed the numbers.