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Old 12-14-2009, 07:22 PM   #1 (permalink)
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Default My 2007 500R seems to vibrate a little

like between 3000 RPM's and 7000 RPMS when I'm in second and third gear, doesn't seem to vibrate as much in 4th, 5th and 6th gear and of course when over 7000 RPM's the vibration goes almost away completely.

I've had th ebike for a few months and can't remember if it was always like this, I believe it was but not sure.

Do the 500's all vibrate a little or do I need to look for something that may be going wrong?

It's not in the fram or suspension, it seems like it's the motor that's vibrating, the motor runs fine or so it seems.

Any thoughts, comments would be appreciated!
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Old 12-22-2009, 07:03 AM   #2 (permalink)
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It's a parallel twin. They vibrate. If it vibrates enough so that things start to fall off, make sure that it isn't a Harley in disguise.

Rob
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Old 12-23-2009, 01:40 PM   #3 (permalink)
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my 07 vibrates a lot too
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Old 12-23-2009, 09:53 PM   #4 (permalink)
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as mentioned, the twin will shake some as will any inline 4 cylinder. I do not catch the buzz on the EX as much as the inline though.
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Old 12-23-2009, 10:07 PM   #5 (permalink)
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Nature of the beast !
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Old 12-24-2009, 06:47 AM   #6 (permalink)
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Quote:
Originally Posted by Dragone19 View Post
as mentioned, the twin will shake some as will any inline 4 cylinder. I do not catch the buzz on the EX as much as the inline though.
I4s have balanced primaries and out of balance secondaries, plus they rev higher. That makes the nature of the vibration very different. Should be nothing more than a slight tingling from an I4 unless it isn't set up properly. A crossplane I4 balances the secondaries but gives uneven power distribution. I've no idea at all what that feels like 'til I get the chance to ride one.

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Old 12-25-2009, 02:08 AM   #7 (permalink)
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Had a problem with my computer, took almost 2 days to get everything back working properly, caught a worm, don't worry, it's been eliminated.

I've tried out several bikes lately, a zx-6r, a coupe of r-6's and a couple of r-1's, none of them vibrarte like mine. Mine vibrates almost as much as a Harley, quite a bit.

I also notice what I would call slack when I decelerate and accelerate, if I move the throttle back and forth just a little, It feels like theres slack in the chain and it takes just a little either way when the thrust is reversed to make up the slack.

Chain is okay so I believe it's in the gearbox. I took it back where I bought it and the service department drove it and told me I was feeling the slides in the carburetor's. I know what the slides feel like when you decelerate and accelerate, I don't think he understood what I was telling him.

I'm starting to think maybe the clutch or something to do with the clutch may be going bad. Anyone ever have a clutch problem with one of these bikes.

Thanks for the rplies........
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Old 12-25-2009, 02:17 AM   #8 (permalink)
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I checked a diagram of the clutch and transmission, the only parts that look like they could create that slack is the primary chain being loose and then in the trnasmission there is an input and output gear, I uess either could cause a little slack.

The slack is like , the clutch is engaged and your cruising let's say 30 mph, let off slowly just enough to feel the thrust reverse in the motor, slowly accelerate so you can feel the thrust change, just before the thrust changes, there is slack, I can feel it bang a little, just a little.

Maybe it's normal and I'm just to cautious but I don't think so. If I accelerate slowly, from 2000 RPM's to say 7000 RPM's in each gear, my tank will vibrate or humm when the motor isin the 4-5k RPM range! Is that normal???

Thanks...........
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Old 12-30-2009, 01:00 PM   #9 (permalink)
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It's worth checking the cush drive in the rear wheel for wear.

Another common problem with these bikes is distortion of the rear brake drum, making it a little oval. You'd really expect to feel this on braking though.

Rob
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Old 01-04-2010, 10:19 PM   #10 (permalink)
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Thanks William, the vibration I'm feeling is from the motor but I do have another rather funny feel, not really noticeable but there. It almost feels like a tire is out of round which would correlate with the out of round brake drum that you mentioned, I'll check it!
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