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Author Topic: Bars vibrate.. A LOT.  (Read 2445 times)

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Offline Dimitri13

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Bars vibrate.. A LOT.
« on: March 21, 2012, 01:13:24 AM »
When I had my clubman bars, they vibrated a bit, mainly on the right side. Now that I switched to clip-ons, the vibration was amplified tenfold. I can't go 10 minutes without it being extremely uncomfortable, again in the right side. I can feel it in the left side too, but not nearly as bad. The vibration increases with RPMs, and starts getting bad at around 5-6k.

Bike is a 550k0. Valves and ignition seem to be adjusted properly, carbs are synced.
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Offline dave500

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Re: Bars vibrate.. A LOT.
« Reply #1 on: March 21, 2012, 01:25:59 AM »
you might just need to go over ignition and sync again?
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Offline OldSchool_IsCool

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Bars vibrate.. A LOT.
« Reply #2 on: March 21, 2012, 04:16:44 AM »
So it's an engine RPM thing and not a speed thing? 

Is your front fender in place or a fork brace at least?  Check your triples for any cracks. On Goldwings, a fork weight is used to dampen bar vibration. Just a thought.
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Offline Dimitri13

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Re: Bars vibrate.. A LOT.
« Reply #3 on: March 21, 2012, 05:29:44 AM »
Yeah, it's RPM, not speed, dependent. My triple tree looked okay the last time I had my forks off (couple months ago). I have a set of anti-vibration bar ends that were decently expensive, I'll probably try putting those on and see how it goes.

I'll check all my specs again this weekend.
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Offline OldSchool_IsCool

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Bars vibrate.. A LOT.
« Reply #4 on: March 21, 2012, 06:43:17 AM »
Check to make sure all 4 pipes are evenly hot. Check also that your motor mount bolts are present & tight. These engines should run pretty smooth even out of tune.
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Can I have a motorcycle when I get old enough?
If you take care of it.
What do you have to do?
Lot’s of things. You’ve been watching me.
Will you show me all of them?
Sure.
Is it hard?
Not if you have the right attitudes. It’s having the right attitudes that’s hard.

Offline Davidov

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Re: Bars vibrate.. A LOT.
« Reply #5 on: March 21, 2012, 06:51:16 AM »
Sounds normal to me.
Your hands are directly on the frame with clip-ons, and the engine is rigidly mounted in the frame.

The vibration is that "feel" vintage bikes give you.
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Offline flybox1

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Re: Bars vibrate.. A LOT.
« Reply #6 on: March 21, 2012, 07:26:09 AM »
does not sound normal.
+1 on engine mounts.  re-torque all of them.
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

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Offline Dimitri13

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Re: Bars vibrate.. A LOT.
« Reply #7 on: March 21, 2012, 10:31:25 AM »
Oh, I just remembered I haven't adjusted my cam chain, could that be a factor?
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Offline flybox1

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Re: Bars vibrate.. A LOT.
« Reply #8 on: March 21, 2012, 10:50:17 AM »
Quote from: Dimitri13 on March 21, 2012, 10:31:25 AM
Oh, I just remembered I haven't adjusted my cam chain, could that be a factor?
uuhhh, yeah!  ::)
silly me.  i assumed you'd done ALL the standard maintenance type things that need to be done ;D
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline Dimitri13

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Re: Bars vibrate.. A LOT.
« Reply #9 on: March 21, 2012, 10:55:27 AM »
I don't know how I forgot to do so, but I was browsing facebook and one of the sites I follow had a thread about cam chain stretching, and it hit me :P
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Offline CB500_k2

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Re: Bars vibrate.. A LOT.
« Reply #10 on: March 21, 2012, 05:36:57 PM »
I had a Sportster with a handlebar vibration problem.  I filled the ends of the handlebar with lead shot to increase the mass and dampen the vibration.  This may work for you.
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Offline lone*X

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Re: Bars vibrate.. A LOT.
« Reply #11 on: March 21, 2012, 06:23:33 PM »
I also had a Sportster that vibrated at any speed or rpm.  Easy fix.  Sold it to a Harley nut.  He liked the vibration. ;D
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Lone*X  ( Don )

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Offline BobbyR

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Re: Bars vibrate.. A LOT.
« Reply #12 on: March 21, 2012, 06:41:49 PM »
Once you have eliminated the engine causes there ate several things you can do. The bars basically act as a bell, so they ring. One thing that works is filling the bars with a cheap butyl caulking. People just buy several tubes. They slip some tubing on the spout, and just pump it in. It does not add the weight that lead shot does and it absorbs vibration.
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